Connector assembly for anode ring of cathode ray tube

Claim 2

An anode connector assembly for electrically connecting a bared wire end of an insulated anode supply conductor to a standard anode button disposed in the glass envelope wall of a cathode ray tube, said assembly comprising a resilient cap having a center axis and a head portion with a flexible, axially extending, circular skirt portion protruding laterally outwardly therefrom, a U-shaped sheet metal connector clip firmly supported interiorly of said cap within the said head portion thereof and having spaced mounting legs extending from said head portion into and exposed within the spatial confines of said skirt portion for engaging the said anode button, and an anode supply conductor having a bared wire end extending into the said head portion of said cap, said clip being directly pinch clamped in situ to said bared wire end interiorly of said cap by a pinch pad portion of said clip to electrically connect it to said bared wire end.

Claim 3

An assembly according to claim 1, wherein the said mounting legs of the clip include inner leg portions extending in spaced parallel relation to one another within an open end axial cavity in the said head portion of said cap, intermediate leg portions offset laterally outward from said inner leg portions, and outer leg portions extending from said intermediate leg portions in generally parallel relation both to one another and to said inner leg portions and exposed within the spatial confines of the said skirt portion of said cap, said outer leg portions being provided at their outer ends with laterally outwardly protruding tab means to engage with said anode button.

Claim 4

An assembly according to claim 1, wherein the said head portion of said cap is provided with an axially extending cavity having a closed inner end and an open outer end facing axially outward of the open outer end of said circular skirt portion, said clip including inner leg portions extending in spaced parallel relation to one another and anchored in place in and extending outwardly of the open outer end of said cavity and intermediate leg portions extending outwardly from said inner leg portions and offset laterally outward therefrom, and an apertured metal shielding plate means surrounding said inner leg portions of said clip and interposed between the said intermediate leg portions and the end of said head portion bordering the said open end of the said cavity therein.

Claim 5

An anode connector assembly for electrically connecting a bared wire end of an insulated anode supply conductor to a standard anode button disposed in the glass envelope wall of a cathode ray tube, said assembly comprising a resilient cap having a center axis and a head portion with a flexible, axially extending, circular skirt portion protruding laterally outwardly therefrom, a U-shaped sheet metal connector clip firmly supported interiorly of said cap within the said head portion thereof and having spaced mounting legs extending from said head portion into and exposed within the spatial confines of said skirt portion for engaging the said anode button, and an anode supply conductor having a bared wire end extending into the said head portion of said cap, said clip being directly pinch clamped in situ to said bared wire end interiorly of said cap to electrically connect it thereto, said conductor wire end being pinch clamped between a grip tab portion and a pinch pad portion of said clip.

Claim 6

An anode connector assembly for electrically connecting a bared wire end of an insulated anode supply conductor to a standard anode button disposed in the glass envelope wall of a cathode ray tube, said assembly comprising a resilient cap having a center axis and a head portion with a flexible, axially extending, circular skirt portion protruding laterally outwardly therefrom, a U-shaped sheet metal connector clip firmly supported interiorly of said cap within the said head portion thereof and having spaced mounting legs extending from said head portion into and exposed within the spatial confines of said skirt portion for engaging the said anode button, and an anode supply conductor having a bared wire end extending into the said head portion of said cap, said clip being directly pinch clamped in situ to said bared wire end interiorly of said cap to electrically connect it thereto, said conductor wire end being pinch clamped between a grip tab portion and a pinch pad portion of said clip.

Claim 7

An assembly according to claim 4, wherein the said mounting legs of the clip include inner leg portions extending in spaced parallel relation to one another and supported in place in the said head portion of said cap, and the said grip tab and pinch pad portions each extend across substantially the entire spatial distance between the said parallel inner leg portions.

Claim 8

An assembly according to claim 4, wherein the said clip is provided with retaining means engaged with said pinch pad to retain it in wire clamping position.

Claim 9

An assembly according to claim 6, wherein the said retaining means comprises yieldable spring locking tang and snap-locked behind the said pinch pad portion to lock it in place in the said wire clamping position.

Claim 10

An assembly according to claim 7, wherein the said clip is anchored in a cavity in the said head portion of said cap and the said mounting legs of the clip include inner leg portions of flat shape extending in flatwise opposed spaced parallel relation to one another within said cavity, and the said locking tang means are located on the said inner leg portions of said mounting legs.

Claim 11

An assembly according to claim 8, wherein the said clip includes a base strip portion joined at its opposite ends to respective ones of said inner leg portions by doubled-back end loop extensions of said base strip portion constituting endwise projecting lock-in mounting ear portions on the clip fitted in and resiliently clamped by the walls of groove-shaped recesses in the side walls of said cavity to hold the clip in axial alignment with said cap and lock the clip in place in said cavity against movement outwardly therefrom.

Claim 12

An anode connector assembly for electrically connecting a bared wire end of an insulated anode supply conductor to a standard anode button disposed in the glass envelope wall of a cathode ray tube, said assembly comprising a resilient cap having a center axis and a head portion with a flexible, axially extending, circular skirt portion protruding laterally outwardly therefrom, a U-shaped sheet metal connector clip firmly support interiorly of said cap within the said head portion thereof and having spaced mounting legs extending from said head portion into and exposed within the spatial confines of said skirt portion for engaging the said anode button, and an anode supply conductor having a bared wire and extending into the said head portion of said cap, said clip being directly pinch clamped in situ to said bared wire end interiorly of said cap to electrically connect it thereto, the said head portion of said resilient cap being provided with an axial cavity within which the said clip is anchored in place, and the portion of the said clip anchored in said cavity being provided with laterally outwardly projecting mounting ear portions fitted in and resiliently clamped by the walls of recesses in the side walls of said cavity to hold the said clip in axial alignment with said cap and lock the clip in place in said cavity against movement outwardly therefrom.

Claim 13

An anode connector assembly for electrically connecting a bared wire end of an insulated anode supply conductor to a standard anode button disposed in the glass envelope wall of a cathode ray tube, said assembly comprising a resilient cap having a center axis and a head portion with a flexible, axially extending, circular skirt portion protruding laterally outwardly therefrom, a U-shaped sheet metal connector clip firmly support interiorly of said cap within the said head portion thereof and having spaced mounting legs extending from said head portion into and exposed within the spatial confines of said skirt portion for engaging the said anode button, and an anode supply conductor having a bared wire and extending into the said head portion of said cap, said clip being directly pinch clamped in situ to said bared wire end interiorly of said cap to electrically connect it thereto, the said head portion of said resilient cap being provided with an axial cavity within which the said clip is anchored in place, and the portion of the said clip anchored in said cavity being provided with laterally outwardly projecting mounting ear portions fitted in and resiliently clamped by the walls of recesses in the side walls of said cavity to hold the said clip in axial alignment with said cap and lock the clip in place in said cavity against movement outwardly therefrom.

Claim 14

An assembly according to claim 10, wherein the said clip includes a base strip portion and the said mounting legs of said clip are joined to said base strip portion by doubled-back end loop extensions thereof constituting the said mounting ear portions of the clip.

Claim 15

An anode connector assembly for electrically connecting a bared wire end of an insulated anode supply conductor to a standard anode button disposed in the glass envelope wall of a cathode ray tube, said assembly comprising a resilient cap having a head portion with a circular skirt portion protruding laterally outwardly therefrom, and a U-shaped sheet metal connector clip firmly supported in a cavity in the said head portion of said cap and having spaced mounting legs extending outwardly of an open end of said cavity and exposed within the confines of said skirt portion for engaging the said anode button, said clip including a base strip portion provided with grip tab and pinch pad portions extending angularly therefrom between the said mounting legs and in spaced overlapping relation with one another with the grip pad portion located between the base strip and pinch pad portions of the clip, and said cap having a laterally extending passageway communicating with said cavity for insertion of a said bared wire end of a said conductor through the said passageway and into said cavity in a position between the said mounting legs of the clip and between the said pinch pad and grip tab portions of the clip for clamping of the bared wire end between the said pinch pad and grip tab portions of the clip by bending of the pinch pad portion in a direction toward said grip tab portion into wire clamping position.

Claim 16

An anode connector assembly for electrically connecting a bared wire end of an insulated anode supply conductor to a standard anode button disposed in the glass envelope wall of a cathode ray tube, said assembly comprising a resilient cap having a head portion with a circular skirt portion protruding laterally outwardly therefrom, and a U-shaped sheet metal connector clip firmly supported in a cavity in the said head portion of said cap and having spaced mounting legs extending outwardly of an open end of said cavity and exposed within the confines of said skirt portion for engaging the said anode button, said clip including a base strip portion provided with grip tab and pinch pad portions extending angularly therefrom between the said mounting legs and in spaced overlapping relation with one another with the grip pad portion located between the base strip and pinch pad portions of the clip, and said cap having a laterally extending passageway communicating with said cavity for insertion of a said bared wire end of a said conductor through the said passageway and into said cavity in a position between the said mounting legs of the clip and between the said pinch pad and grip tab portions of the clip for clamping of the bared wire end between the said pinch pad and grip tab portions of the clip by bending of the pinch pad portion in a direction toward said grip tab portion into wire clamping position.

Claim 17

An assembly according to claim 12, wherein the said clip is provided with retaining means engageable with said pinch pad to retain the said pad in said wire clamping position.

Claim 18

An assembly according to claim 13, wherein the said mounting legs of the clip include inner leg portions extending in spaced parallel relation to one another and anchored in place in the said cavity in the said head portion of said cap, and the said grip tab and pinch pad portions each extend across substantially the entire spatial distance between the said parallel inner leg portions.

Claim 19

An assembly according to claim 13, wherein the said retaining means comprises yieldable spring locking tang means on at least one of said mounting legs and adapted to engage with and snap-lock behind the said pinch pad portion to lock it in place in the said wire clamping position thereof.

Claim 20

An assembly according to claim 15, wherein the said mounting legs of the clip include inner leg portions extending in spaced generally parallel relation to one another and anchored in place in the said cavity in the said head portion of said cap, and the said locking tang means are located on the said inner leg portions of said mounting legs.

Claim 21

An assembly according to claim 16, wherein the said base strip portion of the clip is joined at its opposite ends to respective ones of said inner leg portions by doubled-back end loop extensions of said base strip portion constituting endwise projecting lock-in mounting ear portions on the clip fitted in and resiliently clamped by the walls of groove-shaped recesses in the side walls of said cavity to hold the said clip in axial alignment with said cap and lock the clip in place in said cavity against movement outwardly therefrom.

Claim 22

An assembly according to claim 16, wherein the said locking tang means on the said inner leg portions of the mounting legs of said clip are comprised of tongue portions pressed out of the said inner leg portions and extending angularly inwardly therefrom in a direction toward the said base strip portion of the clip.

Claim 23

An assembly according to claim 12, wherein the portion of said clip supported in said cavity is provided with laterally outwardly projecting mounting ear portions fitted in and resiliently clamped by the walls of recesses in the side walls of said cavity to hold the said clip in axial alignment with said cap and lock the clip in place in said cavity against movement outwardly therefrom.

Claim 24

An assembly according to claim 19, wherein the said mounting legs of said clip are joined to the said base strip portion thereof by doubled-back end loop extensions of the base strip portion constituting the said mounting ear portions of the clip.

Claim 25

An assembly according to claim 12, wherein the said grip tab and pinch pad portions of said clip extend angularly from the said base strip portion thereof in generally opposite directions, and the said clip is axially oriented in the said cavity in said cap with the mouth opening between the said base strip portion and the free end of said pinch pad portion facing toward and communicating with the said laterally extending passageway in said cap.

Claim 26

An assembly according to claim 21, wherein the said clip is provided with retaining means engageable with said pinch pad portion on bending thereof into said wire clamping position, to thereby retain the said pinch pad portion in said wire clamping position.

Claim 27

An assembly according to claim 22, wherein the said retaining means comprises yieldable spring locking tang means on at least one of said mounting legs and adapted to engage with and snap-lock behind the said pinch pad portion to lock it in place in said wire clamping position.

Claim 28

An assembly according to claim 23, wherein the said mounting legs of the clip include inner leg portions extending in spaced generally parallel relation to one another and anchored in place in the said cavity in the said head portion of said cap, and the said locking tang means are located on the said inner leg portions of said mounting legs.

Claim 29

An assembly according to claim 24, wherein the said base strip portion of the clip is joined at its opposite ends to respective ones of said inner leg portions by doubled-back end loop extensions of said base strip portion constituting endwise projecting lock-in mounting ear portions on the clip fitted in and resiliently clamped by the walls of groove-shaped recesses in the side walls of said cavity to hold the said clip firmly in axial alignment with said cap and lock the clip in place in said cavity against movement outwardly therefrom.

Claim 30

An assembly according to claim 24, wherein the said locking tang means on the said inner leg portions of the mounting legs of said clip are comprised of tongue portions pressed out of the said inner leg portions and extending angularly inwardly therefrom in a direction toward the said base strip portion of the clip.

Claim 31

An assembly according to claim 21, wherein the portion of said clip supported in the said cavity in said head portion of said cap is provided with laterally outwardly projecting mounting ear portions fitted in and resiliently clamped by the walls of recesses in the side walls of said cavity to hold the said clip firmly in axial alignment with said cap and lock the clip in place in said cavity against movement outwardly thereof.

Claim 32

An assembly according to claim 27, wherein the said mounting legs of said clip are joined to the said base strip portion thereof by doubled-back end loop extensions of the base strip portion constituting the said mounting ear portions of the clip.

Claim 33

An assembly according to claim 12, wherein the said grip tab and pinch pad portions of said clip extend angularly from the said base strip portion thereof in generally the same direction but with the pinch pad portion extending at a shallower angle than said grip tab portion, and wherein the said clip is axially oriented in the said cavity in said cap with the mouth opening between the said base strip portion and the free end of said pinch pad portion facing away from the said conductor receiving passageway in said cap and with the U-bend bight portion of the pinch pad portion that joins the latter to said base strip portion disposed opposite and adjacent the open inner end of said passageway opening into said cavity, and with an aperture through the said U-bend bight portion of the pinch pad portion disposed opposite and in aligned communication with the said open inner end of said passageway for insertion of the said bared wire end of said conductor through said aperture and into clamping position between the grip tab and pinch pad portions of said clip.

Claim 34

An assembly according to claim 29, wherein the said clip is provided with retaining means engageable with said pinch pad portion on bending thereof into said wire clamping position, to thereby retain the said pinch pad portion in said wire clamping position.

Claim 35

An assembly according to claim 30, wherein the said retaining means comprises yieldable spring locking tang means on at least one of said mounting legs and adapted to engage with and snap-lock behind the said pinch pad portion to lock it in place in said wire clamping position.

Claim 36

An assembly according to claim 31, wherein the said mounting legs of the clip include inner leg portions extending in spaced generally parallel relation to one another and anchored in place in the said cavity in the said head portion of said cap, and the said locking tang means are located on the said inner leg portions of said mounting legs.

Claim 37

An assembly according to claim 32, wherein the said base strip portion of the clip is joined at its opposite ends to respective ones of said inner leg portions by doubled-back end loop extensions of said base strip portion constituting endwise projecting lock-in mounting ear portions on the clip fitted in and resiliently clamped by the walls of groove-shaped recesses in the side walls of said cavity to hold the said clip firmly in axial alignment with said cap and lock the clip in place in said cavity against movement outwardly thereof.

Claim 38

An assembly according to claim 32, wherein the said locking tang means on the said inner leg portions of the mounting legs of said clip are comprised of tongue portions pressed out of the said inner leg portions and extending angularly inwardly therefrom in a direction toward the said base strip portion of the clip.

Claim 39

An assembly according to claim 29, wherein the portion of said clip supported in the said cavity in said head portion of said cap is provided with laterally outwardly projecting mounting ear portions fitted in and resiliently clamped by the walls of recesses in the side walls of said cavity to hold the said clip firmly in axial alignment with said cap and lock the clip in place in said cavity against movement outwardly thereof.

Claim 40

An assembly according to claim 35, wherein the said mounting legs of said clip are joined to the said base strip portion thereof by doubled-back end loop extensions of said base strip portion constituting the said mounting ear portions of the clip.

Claim 41

A metal connector device for mounting in a resilient cap member of an anode connector assembly to electrically connect a bared wire end of an insulated anode supply conductor to a standard anode button disposed in the side of a cathode ray tube, said connector device comprising a generally U-shaped one piece sheet metal clip including a flat base strip portion formed at its opposite ends with a pair of mounting legs extending in spaced side-by-side flatwise opposed relation on opposite sides of the transverse medial plane of and generally perpendicular to said base strip portion and adapted for engagement with said anode button, said base strip portion having a conductor grip tab pressed out and bent inwardly therefrom to extend at an acute angle relative thereto toward one of the side edges of the base strip portion and with its free end edge extending longitudinally of the base strip portion, and said base strip portion also having a conductor pinch pad portion extending from one of the side edges of said base strip portion and bent back to extend transversely inward of said clip between the said mounting legs and at an acute angle to said base strip portion, and toward and overlapping but in spaced relation to the free end edge of said grip tab, for deformation of the pinch pad portion toward said grip tab to tightly clamp a said bared conductor wire end between the pinch pad portion and the grip tab and electrically connect it to the clip.

Claim 42

A metal connector device for mounting in a resilient cap member of an anode connector assembly to electrically connect a bared wire end of an insulated anode supply conductor to a standard anode button disposed in the side of a cathode ray tube, said connector device comprising a generally U-shaped one piece sheet metal clip including a flat base strip portion formed at its opposite ends with a pair of mounting legs extending in spaced side-by-side flatwise opposed relation on opposite sides of the transverse medial plane of and generally perpendicular to said base strip portion and adapted for engagement with said anode button, said base strip portion having a conductor grip tab pressed out and bent inwardly therefrom to extend at an acute angle relative thereto toward one of the side edges of the base strip portion and with its free end edge extending longitudinally of the base strip portion, and said base strip portion also having a conductor pinch pad portion extending from one of the side edges of said base strip portion and bent back to extend transversely inward of said clip between the said mounting legs and at an acute angle to said base strip portion, and toward and overlapping but in spaced relation to the free end edge of said grip tab, for deformation of the pinch pad portion toward said grip tab to tightly clamp a said bared conductor wire end between the pinch pad portion and the grip tab and electrically connect it to the clip.

Claim 43

A connector device according to claim 37, wherein the said mounting legs of the clip include inner leg portions extending generally parallel to one another and generally perpendicular to said base strip portion from inner ends immediately adjacent said base strip portion, and the said grip tab and pinch pad portions each extend across substantially the entire spatial distance between the said inner leg portions.

Claim 44

A connector device according to claim 37, wherein the said mounting legs are joined to the opposite ends of the said base strip portion by doubled back end loop extensions thereof constituting endwise projecting lock in mounting ears for the clip.

Claim 45

A connector device according to claim 37, wherein the said mounting legs are provided with retaining means engageable with the said deformed pinch pad to retain it in wire clamping position.

Claim 46

A connector device according to claim 40, wherein the said retaining means comprises yieldable spring locking tang means on at least one of said mounting legs and extending inwardly thereof at a shallow angle toward said base strip portion for engaging with and snap locking behind the said pinch pad portion to lock it in place in the said wire clamping position.

Claim 47

A connector device according to claim 41, wherein each one of the said pair of mounting legs is provided with a said spring locking tang means.

Claim 48

A connector device according to claim 41, wherein the said mounting legs of the clip include inner leg portions extending generally parallel to one another and generally perpendicular to said base strip portion from inner ends immediately adjacent said base strip portion, said inner leg portions being provided with said spring locking tang means, and the said grip tab and pinch pad portions each extending across substantially the entire spatial distance between the said inner leg portions.

Claim 49

A connector device according to claim 43, wherein the said locking tang means are comprised of tongue portions pressed out of the said inner leg portions of said clip.

Claim 50

A connector device according to claim 43, wherein the said inner leg portions of the mounting legs of said clip are joined to respective ends of the said base strip portion by doubled- back end loop extensions thereof constituting endwise projecting lock-in mounting ears for the clip.

Claim 51

A connector device according to claim 44, wherein the said mounting legs of the clip include inner leg portions extending generally parallel to one another and generally perpendicular to said base strip portion and joined to the opposite ends thereof by said doubled-back end loop extensions of the base strip portion.

Claim 52

A connector device according to claim 46, wherein the said end loop extensions are angularly bent down toward the adjacent mounting legs.

Claim 53

A connector device according to claim 46, wherein the said mounting legs further include intermediate leg portions offset laterally outward from said inner leg portions, and outer leg portions extending from said intermediate leg portions in generally parallel relation both to one another and to said inner leg portions and provided at their outer ends with laterally outwardly protruding tab means to engage with said anode button.

Claim 54

A connector device according to claim 37, wherein the said grip tab and pinch pad portions of said clip extend angularly from the said base strip portion thereof in generally opposite directions.

Claim 55

A connector device according to claim 49, wherein the said mounting legs of the clip include inner leg portions extending in generally parallel flatwise relation to one another and generally perpendicular to said base strip portion, and the said grip tab and pinch pad portions each extend across substantially the entire spatial distance between the said inner leg portions.

Claim 56

A connector device according to claim 49, wherein the said mounting legs are provided with retaining means engageable with the said deformed pinch pad to retain it in wire clamping position.

Claim 57

A connector device according to claim 51, wherein the said retaining means comprises yieldable spring locking tang means on at least one of said mounting legs and extending inwardly thereof at a shallow angle toward said base strip portion for engaging with and snap locking behind the said pinch pad portion to lock it in place in the said wire clamping position.

Claim 58

A connector device according to claim 52, wherein each one of the said pair of mounting legs is provided with a said spring locking tang means.

Claim 59

A connector device according to claim 52, wherein the said mounting legs of the clip include inner leg portions extending in generally parallel flatwise relation to one another and generally perpendicular to said base strip portion from inner ends immediately adjacent said base strip portion, said locking tang means being comprised of tongue portions pressed out of the said inner leg portions of the clip, and the said grip tab and pinch pad portions each extending across substantially the entire spatial distance between the said inner leg portions.

Claim 60

A connector device according to claim 54, wherein the said inner leg portions of the mounting legs of said clip are joined to respective ends of the said base strip portion by doubled-back end loop extensions thereof constituting endwise projecting lock-in mounting ears for the clip.

Claim 61

A connector device according to claim 49, wherein the said mounting legs are joined to the opposite ends of the said base strip portion by doubled back end loop extensions thereof constituting endwise projecting lock-in mounting ears for the clip.

Claim 62

A connector device according to claim 56, wherein the said mounting legs of the clip include inner leg portions extending generally parallel to one another and generally perpendicular to said base strip portion and joined to the opposite ends thereof by said doubled-back end loop extensions of the base strip portion.

Claim 63

A connector device according to claim 37, wherein the said grip tab and pinch pad portions of said clip extend angularly from the said base strip portion thereof in generally the same direction but with the pinch pad portion extending at a shallower angle than said grip tab portion and the grip tab portion being located between the base strip and pinch pad portions of the clip, and said pinch pad portion being joined to the said base strip portion by a U-bend bight portion provided with an aperture therethrough for passage of a said bared wire end of a conductor through said aperture into clamping position between the grip tab and pinch pad portions of the clip.

Claim 64

A connector device according to claim 58, wherein the said mounting legs of the clip include inner leg portions extending in generally parallel flatwise relation to one another and generally perpendicular to said base strip portion, and the said grip tab and pinch pad portions each extend across substantially the entire spatial distance between the said inner leg portions.

Claim 65

A connector device according to claim 58, wherein the said mounting legs are provided with retaining means engageable with the said deformed pinch pad to retain it in wire clamping position.

Claim 66

A connector device according to claim 60, wherein the said retaining means comprises yieldable spring locking tang means on at least one of said mounting legs and extending inwardly thereof at a shallow angle toward said base strip portion for engaging with and snap locking behind the said pinch pad portion to lock it in place in the said wire clamping position.

Claim 67

A connector device according to claim 61, wherein each one of the said pair of mounting legs is provided with a said spring locking tang means.

Claim 68

A connector device according to claim 61, wherein the said mounting legs of the clip include inner leg portions extending in generally parallel flatwise relation to one another and generally perpendicular to said base strip portion from inner ends immediately adjacent said base strip portion, said locking tang means being comprised of tongue portions pressed out of the said inner leg portions of the clip, and the said grip tab and pinch pad portions each extending across substantially the entire spatial distance between the said inner leg portions.

Claim 69

A connector device according to claim 63, wherein the said inner leg portions of the mounting legs of said clip are joined to respective ends of the said base strip Portion by doubled-back end loop extensions thereof constituting endwise projecting lock-in mounting ears for the clip.

Claim 70

A connector device according to claim 58, wherein the said mounting legs are joined to the opposite ends of the said base strip portion by doubled back end loop extensions thereof constituting endwise projecting lock-in mounting ears for the clip.

Claim 71

A connector device according to claim 65, the said mounting legs of the clip include inner leg portions extending generally parallel to one another and generally perpendicular to said base strip portion and joined to the opposite ends thereof by said doubled back end loop extensions of the base strip portion.