# US 4,378,714 A · Adjustable socket including apertured sleeve

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- Number: US 4,378,714 A
- Document ID: US4378714A
- Status: Granted
- Kind: A
- Application number: 06/247,672
- Filed: 1981-03-26
- Granted: 1983-04-05
- Earliest claimed: 1981-03-26
- Inventors: David S. Colvin
- Web page: https://patentgrep.com/patent/US4378714A

## CPC

- B25B 13/44: of the chuck type
- Y10T 279/17658: Reciprocating jaw advancing sleeve
- Y10T 279/17743: Reciprocating cam sleeve
- B25B: TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING, OR HOLDING
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

An adjustable socket (10) for rotatively driving bolts and nuts is disclosed as including a plurality of jaws (18) mounted on a rotatable driver (16) for quick action adjustment between fully opened and fully closed positions upon rotation of an adjuster (22) no more than one revolution. Each jaw has an inclined camming surface (28) that is slidably engaged by a jaw positioner (20) upon axial movement thereof in response to rotation of the adjuster so as to provide radial adjustment of the jaw positions. A spring (30) biases the jaws in an outward radial direction into engagement with the positioner. The jaw positioner comprises a sleeve (20) which has apertures (62) that receive the jaws upon outward movement. Camming surfaces (64) on the sleeve respectively adjacent the apertures (62) engage the jaws (18) to prevent outward jaw movement.

## Claims

### Claim 1

An adjustable socket comprising: a driver adapted to be rotatively driven about an axis of rotation thereof; a plurality of jaws each of which has a mounting lug including an enlarged end mounted on the driver for radial movement with respect to the axis of rotation thereof; each jaw also having camming and slide surfaces that are oriented in opposite axial directions; said camming and slide surfaces having a junction with each other which defines the outer radial extremity of the jaw; the driver having a jaw support end that engages the slide surfaces on the jaws; spring means for biasing the jaws radially outward; a sleeve that receives the driver and the jaws and is axially movable with respect thereto; said sleeve having camming surfaces that respectively engage the camming surfaces of the jaws to position the jaws against outward radial movement under the bias of the spring means; the sleeve having apertures respectively associated with the camming surfaces thereof; said apertures receiving the jaws at the junctions of the camming and slide surfaces thereof upon outward jaw movement under the bias of the spring means; and means for axially positioning the sleeve with respect to the driver.

### Claim 2 (depends on 1)

An adjustable socket as in claim 1 wherein the camming surfaces on the sleeve are positioned adjacent the apertures in the sleeve.

### Claim 3 (depends on 2)

An adjustable socket as in claim 2 wherein the driver has a wrench end and wherein the apertures in the sleeve are located axially between the camming surfaces on the sleeve and the wrench end of the driver.