Patent US4911418A successfully refreshed from Google Patents.
US4911418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Work holder
Assignee: Individual
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Filing: 1988-11-25
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Granted: 1990-03-27
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Expires: 2008-11-25
Abstract
Abstract A work holder having substantially universal workpiece positioning capability having a base, a turret having first and second members pivotally connected and pivotally mounted on the base by a cooperating bearing on the base and first member, the turret being pivotal 360° with respect to said base means in a first plane, the second member being pivotal in other planes normal to the first plane, a worktable on the second member for contacting a workpiece in a supporting position, and a first clamp mechanism on the second member for exerting retaining force in a direction substantially parallel to the first plane on a workpiece supported on the worktable.
Inventors
- 👤 Donald B. Dennis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:15
CPC Classifications
B; B25; B25H; B25H1/00
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
162 words
A work holder having substantially universal workpiece positioning capability comprising base means, turret means comprising first and second members pivotally connected and pivotally mounted on said base means by cooperating bearing means on said base means and first member, said turret means being pivotal 360° in a first plane with respect to said base means, said second member being pivotal in other planes normal to said first plane, worktable means on said second member for contacting a workpiece in a supporting position, said worktable means having spaced segment means between, through and by which the lower portions of a curved workpiece can extend and be supported, and first clamp means on said second member for exerting retaining force in a direction substantially parallel to said first plane on a workpiece supported on said worktable means, wherein said first clamp means is adjustable in both horizontal and vertical directions with respect to said worktable means for accommodating varying sizes and configurations of workpieces.
Claim 2
Dependent Claim
162 words
A work holder having substantially universal workpiece positioning capability comprising base means, turret means comprising first and second members pivotally connected and pivotally mounted on said base means by cooperating bearing means on said base means and first member, said turret means being pivotal 360° in a first plane with respect to said base means, said second member being pivotal in other planes normal to said first plane, worktable means on said second member for contacting a workpiece in a supporting position, said worktable means having spaced segment means between, through and by which the lower portions of a curved workpiece can extend and be supported, and first clamp means on said second member for exerting retaining force in a direction substantially parallel to said first plane on a workpiece supported on said worktable means, wherein said first clamp means is adjustable in both horizontal and vertical directions with respect to said worktable means for accommodating varying sizes and configurations of workpieces.
Claim 3
Dependent Claim
58 words
The work holder of claim 1 wherein said worktable means is in the form of an elongated angle iron member having, in its non-tilted position, one of its interior surface lying in a plane substantially parallel to said first plane, and having the other of its interior surfaces lying in a plane substantially normal to said first plane.
Claim 4
Dependent Claim
31 words
The work holder of claim 2 wherein said worktable means comprises spaced segment means between, through and by which the lower portions of a curved workpiece can extend and be supported.
Claim 5
Dependent Claim
31 words
The work holder of claim 3 wherein said first clamp means is adjustable in both horizontal and vertical directions with respect to said one interior surface of said angle iron member.
Claim 6
Dependent Claim
28 words
The work holder of claim 4 wherein said first clamp means is adjustable toward and away from the other of said interior surfaces of said angle iron member.
Claim 7
Dependent Claim
58 words
The work holder of claim 1 wherein upright means is provided on said second member of said turret means extending upwardly substantially normal to said base means, and second clamp means is mounted on said upright means for exerting retaining force in a direction substantially parallel to said first plane on a workpiece supported on said worktable means.
Claim 8
Dependent Claim
25 words
The work holder of claim 6 wherein said second clamp means is linearly adjustable on said upright means and positionable 360° about the axis thereof.
Claim 9
Dependent Claim
26 words
The work holder of claim 7 wherein said second clamp means is also positionable 360° in planes substantially parallel to the axis of said upright means.
Claim 10
Dependent Claim
110 words
The work holder of claim 5 wherein said first clamp means comprises rod means extending outwardly from said angle iron member in a plane substantially parallel to the plane of said one interior surface of said angle iron member and substantially normal to the other interior surface of said angle iron member, bar means pivotally and linearly slidably mounted at one end on said rod means, screw means threadably mounted in the other end of said bar means and adjustable toward and away from said other interior surface, and locking means on said bar means for locking the same in an adjusted rotational and linear position on said rod means.
Claim 11
Dependent Claim
116 words
The work holder of claim 8 wherein said first clamp means comprises rod means extending outwardly from said angle iron member in a plane substantially parallel to the plane of said one interior surface of said angle iron member and substantially normal to the other interior surface of said angle iron member, bar means pivotally and linearly slidably mounted at one end on said rod means, screw means threadably mounted in the other end of said bar means and adjustable toward and away from said other interior surface, and locking means cooperating with said rod means and bar means for releasable locking said bar means in an adjusted rotational and linear position on said rod means.
Claim 12
Dependent Claim
106 words
The work holder of claim 10 wherein said second clamp means comprises second rod means pivotally and slidably mounted on and extending outwardly from said upright means in a plane substantially normal to the axis thereof, second bar means pivotally and linearly slidablee mounted at one end on said second rod means, screw means threadedly mounted in the other end of said second bar means and adjustable toward and away from said upright means, and locking mens cooperating with said second rod means and second bar means for releasably locking said second bar means in an adjusted rotational and linear position on said second rod means.
Claim 13
Dependent Claim
25 words
The work holder of claim 5 wherein lock means is provided for releasable locking said turret means in a rotational position on said base means.
Claim 14
Dependent Claim
25 words
The work holder of claim 11 wherein lock means is provided for releasably locking said turret means in a rotational position on said base means.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-03-26 | 1993-09-25 | 1994-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-03-26 | 1997-09-25 | 1998-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-03-26 | 2001-09-25 | 2002-03-27 | $7700.00 | Window Closed / Lapsed |