Patent US3727929A successfully refreshed from Google Patents.
US3727929A
Expired / Lapsed
US
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Precision air chuck
Assignee: Metrology Systems Corp
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Filing: 1971-06-14
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Granted: 1973-04-17
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Expires: 1991-06-14
Abstract
Abstract An air actuated multi-jaw chuck. The jaws are actuated by a piston coupled to the jaws by means of an angularly deployed key which mates with a keyway connected to the jaw. Means are provided for adjusting the relationship between the jaw and the actuating mechanism. This permits the achievement of extreme concentricity. A radially acting collet accepts workpieces whose diameters might vary by as much as 0.040 inches and still maintain concentricity.
Inventors
- 👤 A Fink
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:38
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/10; B23B31/12; B23B31/16; B23B31/16045; B23B31/16066; B23B31/16233; B23B31/16254; B23B31/20; B23B31/201; B23B31/204; B23B2231/00; B23B2231/20; B23B2231/2086; B23B2260/00; B23B2260/004; Y; Y10; Y10T; Y10T279/00; Y10T279/12; Y10T279/1224; Y10T279/1274; Y10T279/1291; Y10T279/19; Y10T279/1986
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
146 words
An air actuated chuck which includes: a. a chuck body for rotation about an axis; b. a plurality of master jaw means supported in channels within said chuck body and radially movable therein relating to the axis from a retracted position to a clamping position and vice versa, said master jaws having keyway means, said keyway means being inclined with respect to the direction of movement of said master jaw means; c. a cylinder within said chuck body; d. a piston within said cylinder arranged to move axially along the axis; e. actuator means carried by said piston for coaxial movement therewith; f. key means carried by the actuator means slidably engaging said keyway means to radially move said master jaw means when said piston is moved axially; and g. means to vary the radial position of the keyway means relative to the master jaw means.
Claim 2
Dependent Claim
146 words
An air actuated chuck which includes: a. a chuck body for rotation about an axis; b. a plurality of master jaw means supported in channels within said chuck body and radially movable therein relating to the axis from a retracted position to a clamping position and vice versa, said master jaws having keyway means, said keyway means being inclined with respect to the direction of movement of said master jaw means; c. a cylinder within said chuck body; d. a piston within said cylinder arranged to move axially along the axis; e. actuator means carried by said piston for coaxial movement therewith; f. key means carried by the actuator means slidably engaging said keyway means to radially move said master jaw means when said piston is moved axially; and g. means to vary the radial position of the keyway means relative to the master jaw means.
Claim 3
Dependent Claim
59 words
The chuck of claim 1 wherein said keyway means comprises: a. a body portion carrying a keyway; b. a pair of extending colinear arms slidable in a channel in a said master jaw; c. spring means acting on said body portion at right angles to the direction of movement of said arms in the channel of said master jaw.
Claim 4
Dependent Claim
46 words
The chuck of claim 1 wherein said keyway means comprises: a. a body portion carrying a keyway; b. means securing said body portion in the said master jaw for limited movement colinear with said master jaw; and c. means for locking said body portion against movement.
Claim 5
Dependent Claim
31 words
The chuck of claim 3 including spring means acting on said body portion at right angles to the direction of movement of said arms in the channel of said master jaw.
Claim 6
Dependent Claim
91 words
The chuck of Claim 3 wherein said locking means includes: a. a first set screw carried by said body portion and oriented colinearly with the master jaw; b. a seat carried by said master jaw for engagement by said first set screw to limit movement of the said body portion in a first direction; c. a second set screw coaxial with said first set screw carried by said master jaw for engagement with said body portion to limit movement of said body portion in a second direction opposite said first direction.
Claim 7
Dependent Claim
48 words
The chuck of claim 5 including spring means acting on said body portion at right angles to the direction of movement of said arms in the channel of said master jaw, and in a direction tending to maintain the said arms pressed against the bottom of the channel.
Claim 8
Dependent Claim
24 words
The chuck of claim 5 wherein said second set screw is tubular whereby means for adjusting said first set screw may be inserted therethrough.
Claim 9
Dependent Claim
52 words
The chuck of claim 1 including a collet for insertion in a central bore in said chuck body, said collet comprising a plurality of radially movable segments, said segments being joined to each other by resiliently deformable members, each of said segments being joined to a said master jaw for actuation therewith.
Claim 10
Dependent Claim
19 words
The chuck of claim 1 including a conduit for cooling fluid extending into the center of said chuck body.
Claim 11
Dependent Claim
11 words
The chuck of claim 1 including means for mounting auxiliary jaws.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-16 | 1976-10-16 | 1977-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-16 | 1980-10-16 | 1981-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-16 | 1984-10-16 | 1985-04-17 | $7700.00 | Window Closed / Lapsed |