US5414213A — Shielded electric cable

Claim 1

Independent Claim 127 words

A shielded electric cable of predetermined diameter for assembly with a standard connector comprising a core comprising an insulated conductor, a first shielding member comprising an elongated ribbon of insulating material and a pair of elongated metallic foil strips arranged in a parallel relationship with the ribbon and bonded to opposite sides of the ribbon, the first shielding member being applied longitudinally to the core and wrapped circumferentially around the core in a generally parallel relationship forming two concentric, substantially closed shielding layers, a layer of plastic material of predetermined thickness surrounding said first shielding member, and a second shielding member surround said layer of plastic material, said second shielding member being formed of non-braided metallic material to facilitate assembly of the cable with a standard connector.

Claim 2

Dependent Claim 127 words

A shielded electric cable of predetermined diameter for assembly with a standard connector comprising a core comprising an insulated conductor, a first shielding member comprising an elongated ribbon of insulating material and a pair of elongated metallic foil strips arranged in a parallel relationship with the ribbon and bonded to opposite sides of the ribbon, the first shielding member being applied longitudinally to the core and wrapped circumferentially around the core in a generally parallel relationship forming two concentric, substantially closed shielding layers, a layer of plastic material of predetermined thickness surrounding said first shielding member, and a second shielding member surround said layer of plastic material, said second shielding member being formed of non-braided metallic material to facilitate assembly of the cable with a standard connector.

Claim 3

Dependent Claim 60 words

A shielded electric cable according to claim 1, wherein each of said shielding layers is formed by a respective one of the foil strips with the longitudinal edge of one of the foil strips forming the inner shielding layer overlapping the opposite longitudinal edge of the foil strip forming the outer shielding layer to provide direct contact with each other.

Claim 4

Dependent Claim 62 words

A shielded electric cable according to claim 1, wherein each of said shielding layers is formed by a respective one of the foil strips with the longitudinal edges of the foil strip forming the inner shielding layer meeting to form a butt joint and the longitudinal edges of the foil strip forming the outer shielding layer meeting to form a butt joint.

Claim 5

Dependent Claim 15 words

A shielded electric cable according to claim 1 including an outer jacket of non-conductive material.

Claim 6

Dependent Claim 23 words

A shielded electric cable according to claim 1 wherein said layer of plastic material is bonded to said first and second shielding members.

Claim 7

Dependent Claim 34 words

A shielded electric cable according to claim 1 wherein said layer of plastic material is bonded to said first and second shielding members and said second shielding member is bonded to said outer jacket.

Claim 8

Dependent Claim 58 words

A shielded electric cable according to claim 1 wherein said second shielding member comprises at least one layer of an elongated metallic foil strip applied longitudinally to the core and wrapper circumferentially around the layer of plastic material with one of the longitudinal edges of the metallic strip engaging the opposite longitudinal edge to form a longitudinal joint.

Claim 9

Dependent Claim 106 words

A shielded electric cable according to claim 1 wherein said second shielding member comprises a tape comprising an elongated ribbon of insulating material, and a pair of elongated metal foil strips arranged in parallel relationship with the ribbon and bonded to opposite sides of the ribbon, said tape being applied longitudinally to the core and wrapped circumferentially around the layer of plastic material with one of the longitudinal edges of the tape bent back on itself and the opposite longitudinal edge bent inwardly on itself to form opposing longitudinal grooves with the opposing edges being received respectively in the opposing grooves to form a longitudinal joint.

Claim 10

Dependent Claim 17 words

A shielded electric cable according to claim 1 wherein said second shielding member comprises a metal tube.

Claim 11

Dependent Claim 16 words

A shielded electric cable according to claim 1 wherein said layer of plastic is foam material.

Claim 12

Dependent Claim 15 words

A shielded electric cable according to claim 1 wherein said layer of plastic is conductive.

Claim 13

Dependent Claim 15 words

A shielded electric cable according to claim 1 wherein said layer of plastic is semi-conductive.

Claim 14

Dependent Claim 15 words

A shielded electric cable according to claim 1 wherein said layer of plastic is non-conductive.

Claim 15

Dependent Claim 16 words

A shielded electric cable according to claim 1 wherein said layer of plastic comprises polyvinyl chloride.

Claim 16

Dependent Claim 15 words

A shielded electric cable according to claim 1 wherein said layer of plastic comprises polyethylene.

Claim 17

Dependent Claim 16 words

A shielded electric cable according to claim 1 wherein said layer of plastic comprises thermoplastic rubber.

Claim 18

Dependent Claim 18 words

A shielded electric cable according to claim 1 wherein said layer of plastic includes a heat activated adhesive.

Claim 19

Independent Claim 165 words

A method of making a shielded electric cable of predetermined diameter for assembly with a standard connector said cable having a core comprising an insulated conductor including the steps of applying a first shielding member to the core, the first shielding member comprising an elongated ribbon of insulating material and a pair of elongated metal foil strips arranged in a parallel relationship with the ribbon and bonded to the opposite sides of the ribbon, the first shielding member being applied longitudinally to the core and wrapped circumferentially around the core in a generally parallel relationship forming two concentric substantially closed shielding layers, applying a layer of plastic material of predetermined thickness surrounding the first shielding member, applying a second shielding member surrounding the layer of plastic, the second shielding member being formed of non-braided metallic material to facilitate assembly of the cable with a standard connector, and applying an outer jacket of non-conductive material to the second shielded member to complete the shielded electric cable.

Claim 20

Independent Claim 165 words

A method of making a shielded electric cable of predetermined diameter for assembly with a standard connector said cable having a core comprising an insulated conductor including the steps of applying a first shielding member to the core, the first shielding member comprising an elongated ribbon of insulating material and a pair of elongated metal foil strips arranged in a parallel relationship with the ribbon and bonded to the opposite sides of the ribbon, the first shielding member being applied longitudinally to the core and wrapped circumferentially around the core in a generally parallel relationship forming two concentric substantially closed shielding layers, applying a layer of plastic material of predetermined thickness surrounding the first shielding member, applying a second shielding member surrounding the layer of plastic, the second shielding member being formed of non-braided metallic material to facilitate assembly of the cable with a standard connector, and applying an outer jacket of non-conductive material to the second shielded member to complete the shielded electric cable.

Claim 21

Dependent Claim 20 words

The method of claim 18 wherein the layer of plastic material is applied to the first shielding member by extrusion.

Claim 22

Dependent Claim 30 words

The method of claim 18 wherein the layer of plastic material is applied to the first shielding member by wrapping a tape of plastic material around the first shielding member.

Claim 23

Dependent Claim 24 words

The method of claim 18 wherein the outer jacket of insulating material is applied by extruding the outer jacket on the second shielding member.

Claim 24

Dependent Claim 31 words

The method of claim 18 wherein said second shielding member is formed from metal tubing which has been drawn down to fit the outside diameter of the layer of plastic material.

Claim 25

Dependent Claim 38 words

The method of claim 18 wherein the layer of plastic material is in the form of a tape of foam material pulled longitudinally of the cable and applied to the first shielding member by wrapping the tape therearound.

Claim 26

Dependent Claim 15 words

The method of claim 18 wherein said layer of plastic material is a foam material.

Claim 27

Dependent Claim 13 words

The method of claim 18 wherein said layer of plastic material is non-conductive.

Claim 28

Dependent Claim 12 words

The method of claim 18 wherein said layer of plastic is semi-conductive.

Claim 29

Dependent Claim 12 words

The method of claim 18 wherein said layer of plastic is conductive.

Claim 30

Dependent Claim 20 words

The method of claim 18 wherein said layer of plastic material is bonded to said first and second shielding members.

Claim 31

Dependent Claim 15 words

The method of claim 28 wherein said layer of plastic includes a heat activated adhesive.

Claim 32

Dependent Claim 16 words

The method of claim 29 wherein said outer jacket is bonded to said second shielding member.

Claim 33

Independent Claim 182 words

A method of assembling a shielded electric cable with a connector wherein the connector comprises a central connector post surrounded by a crimp ting and a connector nut and the shielded electric cable comprises a core having an insulated conductor, a first shielding member extending longitudinally of the core and wrapped circumferentially around the core, a layer of plastic material surrounding the first shielding member and a second shielding member surrounding the layer of plastic material, the second shielding member being formed of non-braided metallic material, said method comprising the steps of: aligning the longitudinal axis of the connector with the longitudinal axis of the shielded electric cable, placing the end of the connector post in abutting relation with the adjacent end of the plastic layer of material in the shielded electric cable, applying a longitudinal force to the cable and connector to cause the plastic layer to be pushed back beneath the second shielding member so that the connector post will make metal-to-metal contact between the first shielding member and the second shielding member after the installation of the electrical connector.

Claim 34

Independent Claim 182 words

A method of assembling a shielded electric cable with a connector wherein the connector comprises a central connector post surrounded by a crimp ting and a connector nut and the shielded electric cable comprises a core having an insulated conductor, a first shielding member extending longitudinally of the core and wrapped circumferentially around the core, a layer of plastic material surrounding the first shielding member and a second shielding member surrounding the layer of plastic material, the second shielding member being formed of non-braided metallic material, said method comprising the steps of: aligning the longitudinal axis of the connector with the longitudinal axis of the shielded electric cable, placing the end of the connector post in abutting relation with the adjacent end of the plastic layer of material in the shielded electric cable, applying a longitudinal force to the cable and connector to cause the plastic layer to be pushed back beneath the second shielding member so that the connector post will make metal-to-metal contact between the first shielding member and the second shielding member after the installation of the electrical connector.

Claim 35

Dependent Claim 72 words

The method according to claim 31 wherein the outer surface of the first shielding member is bonded to the inner surface of the plastic layer and the outer surface of the plastic layer is bonded to the inner surface of the second shielding member whereby these bonds are broken when the plastic layer is pushed back beneath the second shielding member by the connector post during assembly with the shielded electric cable.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1998-05-08	1998-11-07	1999-05-09	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	2002-05-08	2002-11-07	2003-05-09	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2006-05-08	2006-11-07	2007-05-09	$7700.00	Window Closed / Lapsed

Shielded electric cable

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