US3801115A — Quick change tool holder

Claim 1

Independent Claim 251 words

In combination, a socket member having a bore at one end thereof; a tool holder having tool gripping means at one end and having a shank at the other end nonrotatably and axially slidably telescoped in said bore; a lock nut axially adjustably threaded on said shank for abutting engagement with said one end of said socket member to constitute a positive stop for axial thrust load imposed on said tool holder by a tool in said gripping means and to predeterminedly axially locate said gripping means with reference to said one end of said socket member; lock means comprising a rotary lock actuator on said socket member having a circumferentiAlly extending cam surface, and a lock member radially movable in said socket member by said cam surface into radially overlapping relation to said shank upon rotation of said lock actuator thus to lock said tool holder and socket member against axial separation from a position whereat said lock nut is in abutting engagement with said one end of said socket member; said socket member having a tubular extension radially movably carrying other locking members for movement into and out of engagement with a peripheral groove in said lock nut; and a cam ring secured to said lock actuator for rotation therewith operative to actuate said other locking members into locking engagement with said groove to retain said tool holder coaxially in said bore and to retain said lock nut in abutting engagement with said one end of said socket member.

Claim 2

Dependent Claim 251 words

In combination, a socket member having a bore at one end thereof; a tool holder having tool gripping means at one end and having a shank at the other end nonrotatably and axially slidably telescoped in said bore; a lock nut axially adjustably threaded on said shank for abutting engagement with said one end of said socket member to constitute a positive stop for axial thrust load imposed on said tool holder by a tool in said gripping means and to predeterminedly axially locate said gripping means with reference to said one end of said socket member; lock means comprising a rotary lock actuator on said socket member having a circumferentiAlly extending cam surface, and a lock member radially movable in said socket member by said cam surface into radially overlapping relation to said shank upon rotation of said lock actuator thus to lock said tool holder and socket member against axial separation from a position whereat said lock nut is in abutting engagement with said one end of said socket member; said socket member having a tubular extension radially movably carrying other locking members for movement into and out of engagement with a peripheral groove in said lock nut; and a cam ring secured to said lock actuator for rotation therewith operative to actuate said other locking members into locking engagement with said groove to retain said tool holder coaxially in said bore and to retain said lock nut in abutting engagement with said one end of said socket member.

Claim 3

Dependent Claim 75 words

The combination of claim 1 wherein spring means biases said lock actuator and said cam ring in a direction to effect locking together of said tool holder and said socket member; and wherein latch means operated by said lock nut retains said lock actuator and said cam ring in a position permitting axial insertion or withdrawal of said shank until said shank is inserted to effect tripping of said latch means by said lock nut.

Claim 4

Dependent Claim 73 words

The combination of claim 1 wherein said shank and lock member have interengaged inclined portions which are radially overlapped when said lock member is radially moved by said cam surface; and wherein said groove and other locking members are engaged at a steeper angle to provide added resistance to movement of said lock nut out of engagement with said one end of said socket member by severe pullout forces on said tool holder.

Claim 5

Dependent Claim 53 words

The combination of claim 1 wherein said shank has an inclined flat on its surface with which said lock member is engaged when radially moved by said cam surface; and wherein said other locking members comprise at least three equally spaced balls whose centers lie in a plane parallel to said one end.

Claim 6

Dependent Claim 107 words

The combination of claim 1 wherein spring means biases said lock actuator and cam ring in a direction to lock said tool holder and socket member against axial separation, said lock actuator being manually movable against said spring means in the opposite direction to permit axial separation of said tool holder and socket member; and wherein latch means on said socket member actuated by said lock nut retains said lock actuator in the last-mentioned position until actuated by said lock nut upon axial insertion of said shank into said bore as said lock nut is moved into abutting engagement with said one end of said socket member.

Claim 7

Dependent Claim 251 words

In combination, a socket member having a bore; a tool holder having a shank nonrotatably received in said bore; a lock member movable in said socket member to engage said shank to retain said tool holder and socket member axially together; spring biased cam means operative to so move said lock member; and latch means operated by said tool holder upon axial insertion of said shank into said bore to release said cam means for actuating said lock member to engage said shank; said shank having shoulder means thereon adapted to engage the axially outer end face of said socket member, said shoulder means being operative upon insertion of said shank into said bore to operate said latch means to release said cam means for movement to engage said locking member with said shank; said latch means comprising an axial pin having an end engageable with said shoulder means, said axial pin having a transverse groove which retains a latch member in engagement with said cam means until said shoulder means moves said axial pin, at which time, said latch member is movable into a deeper portion of said transverse groove thus to release said cam means for movement to engage said locking member with said shank; said shoulder means having a peripheral groove; and other lock members movable in said socket member to engage said groove; said cam means being operative to so move said other locK members when said cam means is released by operation of said latch means.

Claim 8

Dependent Claim 251 words

In combination, a socket member having a bore; a tool holder having a shank nonrotatably received in said bore; a lock member movable in said socket member to engage said shank to retain said tool holder and socket member axially together; spring biased cam means operative to so move said lock member; and latch means operated by said tool holder upon axial insertion of said shank into said bore to release said cam means for actuating said lock member to engage said shank; said shank having shoulder means thereon adapted to engage the axially outer end face of said socket member, said shoulder means being operative upon insertion of said shank into said bore to operate said latch means to release said cam means for movement to engage said locking member with said shank; said latch means comprising an axial pin having an end engageable with said shoulder means, said axial pin having a transverse groove which retains a latch member in engagement with said cam means until said shoulder means moves said axial pin, at which time, said latch member is movable into a deeper portion of said transverse groove thus to release said cam means for movement to engage said locking member with said shank; said shoulder means having a peripheral groove; and other lock members movable in said socket member to engage said groove; said cam means being operative to so move said other locK members when said cam means is released by operation of said latch means.

Claim 9

Dependent Claim 98 words

The combination of claim 6 wherein said cam means is rotationally spring biased on said socket member and has circumferentially extending cam surfaces engageable with said lock member and with said other lock members; wherein said lock member comprises a radially movable pin in said socket member moved radially inward to engage said shank when said cam means is released by operation of said latch means; and wherein said other lock members comprise balls in said socket member moved radially inward to engage in said groove when said cam means is released by operation of said latch means.

Claim 10

Dependent Claim 93 words

The combination of claim 7 wherein said cam surface engaging said lock member is inclined with respect to the axis of said shank; and wherein said shank has an inclined face engaged by said pin to prevent axial withdrawal of said shank when said cam means has been released by said latch means; and wherein said groove and other lock members are engaged at a steeper angle to provide added resistance to movement of said shoulder means out of engagement with said outer end face by severe pullout forces on said tool holder.

Claim 11

Dependent Claim 101 words

The combination of claim 1 wherein spring means biases said lock actuator and cam ring in a direction to effect locking together of said tool holder and said socket member; and wherein latch means including an operating member projecting axially from said one end of said socket member retains said lock actuator and cam ring in a position permitting axial insertion or withdrawal of said shank until said shank is inserted to engage said lock nut with said operating member to trip said latch means as said lock nut moves into abutting engagement with said one end of said socket member.

Claim 12

Dependent Claim 68 words

The combination of claim 1 wherein said socket member has shoulder means on which ball bearings are supported in axially spaced apart relation; wherein said lock actuator comprises a tubular member journaled on said bearings and having said cam surface on its interior surface between said bearings engageable with said lock member; and wherein said cam ring is disposed axially outwardly adjacent to one of said ball bearings.

Claim 13

Dependent Claim 113 words

The combination of claim 10 wherein a coiled torsion spring means between said tubular member and one of said shoulder means biases said tubular member cam ring in a direction to effect locking together of said tool holder and said socket member; and wherein latch means including an operating member projecting axially from said one end of said socket member retains said tubular member and cam ring in a position permitting axial insertion or withdrawal of said shank until said shank is inserted to engage said lock nut with said operating member to trip said latch means as said lock nut moves into abutting engagement with said one end of said socket member.

Claim 14

Dependent Claim 83 words

The combination of claim 1 wherein said socket member has a rectangular opening with axially spaced apart end walls and circumferentially spaced apart side walls; wherein said lock member comprises a cylindrical pin in said opening which is compressed across a diametral plane between said cam surface and an inclined flat on said shank; and wherein said other lock members comprise at least three equally spaced apart balls whose centers lie in a plane parallel to said one end of said socket member.

Claim 15

Dependent Claim 78 words

The combination of claim 1 wherein said lock nut has an internal circumferential groove; wherein an arcuate bearing member of axial width exceeding the pitch of the shank and lock nut threads is disposed in said internal groove; and wherein a radial set screw in said lock nut presses said bearing member into frictional engagement with the shank threads to retain said lock nut in any desired axially adjusted position on said shank without damaging said shank threads.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1977-04-01	1977-10-01	1978-04-02	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1981-04-01	1981-10-01	1982-04-02	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1985-04-01	1985-10-01	1986-04-02	$7700.00	Window Closed / Lapsed

Quick change tool holder

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