Patent US3792855A successfully refreshed from Google Patents.
US3792855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Workpiece support apparatus
Assignee: Ex-Cell-O Corp
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Filing: 1972-08-30
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Granted: 1974-02-19
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Expires: 1992-08-30
Abstract
Abstract A workpiece support apparatus for mounting in position adjacent a workpiece to provide positive back-up support and prevent deflection of the workpiece during a machining operation thereon. The workpiece support apparatus includes a housing having a first bore formed therein and a second bore formed perpendicularly to said first bore and communicating therewith. A workpiece support pin is adjustably mounted in the second bore and it has one end extended outwardly of the housing for operative engagement with a workpiece. A collet member and a collet operating bushing are operatively mounted in the second bore around the support pin for releasably locking the pin in an adjusted position. A manually operable wedge is movably mounted in the first bore, and it is adapted to operatively engage the collet operating bushing for moving the collet member from an inoperative position to a support pin locking position.
Inventors
- 👤 D Bondie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:40
CPC Classifications
B; B23; B23Q; B23Q3/00; B23Q3/02; B23Q3/10; B23Q3/103; B23Q3/106; B23Q3/108; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17666; Y10T279/17692; Y10T279/17743
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
199 words
A workpiece support apparatus comprising: a. a housing adapted to be disposed adjacent a workpiece on a workpiece supporting means; b. a workpiece support pin adjustably mounted in said housing and having one end extended outwardly of said housing for supporting engagement with a workpiece to provide back-up support to the workpiece during a machining operation; c. means for normally biasing said workpiece support pin outwardly of said housing; d. locking means operatively mounted in said housing for releasably locking said workpiece support pin in an adjusted position in said housing; said locking means includes: 1. a collet member operatively mounted around said support pin mounted in said housing for releasably gripping said workpiece support pin to lock it in an adjusted position; 2. a collet operating bushing movably mounted in said housing; 3. a wedge member movably mounted in said housing and operatively engaging said collet bushing for moving said bushing between an inoperative position and an operative position, whereby when said bushing is in the operative position it forces the collet member into a gripping engagement with said support pin to lock the support pin in an adjusted position; and, 4. means for moving said wedge member.
Claim 2
Dependent Claim
199 words
A workpiece support apparatus comprising: a. a housing adapted to be disposed adjacent a workpiece on a workpiece supporting means; b. a workpiece support pin adjustably mounted in said housing and having one end extended outwardly of said housing for supporting engagement with a workpiece to provide back-up support to the workpiece during a machining operation; c. means for normally biasing said workpiece support pin outwardly of said housing; d. locking means operatively mounted in said housing for releasably locking said workpiece support pin in an adjusted position in said housing; said locking means includes: 1. a collet member operatively mounted around said support pin mounted in said housing for releasably gripping said workpiece support pin to lock it in an adjusted position; 2. a collet operating bushing movably mounted in said housing; 3. a wedge member movably mounted in said housing and operatively engaging said collet bushing for moving said bushing between an inoperative position and an operative position, whereby when said bushing is in the operative position it forces the collet member into a gripping engagement with said support pin to lock the support pin in an adjusted position; and, 4. means for moving said wedge member.
Claim 3
Dependent Claim
9 words
a collet operating bushing movably mounted in said housing;
Claim 4
Dependent Claim
9 words
a collet operating bushing movably mounted in said housing;
Claim 5
Dependent Claim
86 words
A workpiece support apparatus as defined in claim 1, wherein: a. said collet member comprises a conically shaped body including a plurality of circumferentially spaced apart gripping members which are secured together by a plurality of interconnecting resilient and flexible members; and, b. said collet bushing comprises a cylindrical member having an internally coned recess in one end thereof in which is operatively received said conically shaped collet body, and a cam means formed on the other end thereof for operative engagement by said wedge member.
Claim 6
Dependent Claim
77 words
A workpiece support apparatus as Defined in claim 1, wherein: a. said wedge member is movably mounted in a first bore in said housing; b. said workpiece support pin, collet member, and collet operating bushing are movably mounted in a second bore in said housing which is disposed perpendicular to said first bore and in communication therewith; and, c. said housing is provided with means operatively mounted over said second bore for retaining said collet member therein.
Claim 7
Dependent Claim
58 words
a wedge member movably mounted in said housing and operatively engaging said collet bushing for moving said bushing between an inoperative position and an operative position, whereby when said bushing is in the operative position it forces the collet member into a gripping engagement with said support pin to lock the support pin in an adjusted position; and,
Claim 8
Dependent Claim
58 words
a wedge member movably mounted in said housing and operatively engaging said collet bushing for moving said bushing between an inoperative position and an operative position, whereby when said bushing is in the operative position it forces the collet member into a gripping engagement with said support pin to lock the support pin in an adjusted position; and,
Claim 9
Dependent Claim
6 words
means for moving said wedge member.
Claim 10
Dependent Claim
6 words
means for moving said wedge member.
Claim 11
Dependent Claim
33 words
A workpiece support apparatus as defined in claim 1, wherein: a. said collet member is provided with a convergently inward taper; and, b. the outer diameter of the support pin tapers convergently inward.
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) | 1977-02-18 | 1977-08-20 | 1978-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-18 | 1981-08-20 | 1982-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-18 | 1985-08-20 | 1986-02-19 | $7700.00 | Window Closed / Lapsed |