US3936983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sanding fixture for producing circular parts
Assignee: Individual
•
Filing: 1975-03-19
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Granted: 1976-02-10
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Expires: 1995-03-19
Abstract
Abstract This invention relates to a device useful in making circular shapes of predetermined size on power sanding machines and the like. The device is essentially a fixture which enables a workpiece to be located on an adjustable center so that it can be rotated with respect to a driven sanding disc, polishing wheel, or similar abrasive tools. The device also permits an oversize workpiece to be fed into the sanding disc until the predetermined radius is reached.
Inventors
- 👤 Donald M. Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:34
CPC Classifications
B; B23; B23Q; B23Q1/00; B23Q1/25; B23Q1/44; B23Q1/48; B23Q1/4804; B24; B24B; B24B41/00; B24B41/06; B24B41/068
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
95 words
A fixture for producing circular parts for use in conjunction with an abrasive wheel or the like; said fixture consisting essentially of; a base including means for positioning said fixture a fixed distance from said abrasive wheel, a pivot pin joining said base and a platen for pivotal movement, said platen having a plurality of work-mounting pin locations with a work-mounting pin positioned in one of said locations for mounting a workpiece center for rotation thereupon, and positive stop means which limits the degree of pivotal movement of the platen with respect to the base.
Claim 2
Dependent Claim
95 words
A fixture for producing circular parts for use in conjunction with an abrasive wheel or the like; said fixture consisting essentially of; a base including means for positioning said fixture a fixed distance from said abrasive wheel, a pivot pin joining said base and a platen for pivotal movement, said platen having a plurality of work-mounting pin locations with a work-mounting pin positioned in one of said locations for mounting a workpiece center for rotation thereupon, and positive stop means which limits the degree of pivotal movement of the platen with respect to the base.
Claim 3
Dependent Claim
23 words
The fixture of claim 1 wherein said positioning means is a raised rib on the base adapted to engage a worktable miter slot.
Claim 4
Dependent Claim
128 words
A work holding fixture to facilitate the production of circular parts on the worktable of a disc sander or the like, said fixture including: a. a base having means to position said fixture on said worktable, b. a platen, having a plurality of work-mounting pin locations, pivotally mounted to said base for pivotal movement in a plane parallel to said worktable, c. a work-mounting pin in one of said locations on said platen and d. positive stop means to limit the degree of pivotal movement between said base and platen whereby a workpiece may be mounted on said work-mounting pin, said platen pivoted to the degree permitted by the positive stop means and the workpiece rotated on said work-mounting pin against a tool to produce a circular part.
Claim 5
Dependent Claim
128 words
A work holding fixture to facilitate the production of circular parts on the worktable of a disc sander or the like, said fixture including: a. a base having means to position said fixture on said worktable, b. a platen, having a plurality of work-mounting pin locations, pivotally mounted to said base for pivotal movement in a plane parallel to said worktable, c. a work-mounting pin in one of said locations on said platen and d. positive stop means to limit the degree of pivotal movement between said base and platen whereby a workpiece may be mounted on said work-mounting pin, said platen pivoted to the degree permitted by the positive stop means and the workpiece rotated on said work-mounting pin against a tool to produce a circular part.
Claim 6
Dependent Claim
30 words
The work holding fixture of claim 3 wherein said means to position said fixture on said worktable comprises a rib proportioned to engage and slide in a worktable miter slot.
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) | 1979-02-09 | 1979-08-11 | 1980-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-09 | 1983-08-11 | 1984-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-09 | 1987-08-11 | 1988-02-10 | $7700.00 | Window Closed / Lapsed |