US3863397A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Woodworking jig
Assignee: Individual
•
Filing: 1974-01-18
•
Granted: 1975-02-04
•
Expires: 1994-01-18
Abstract
Abstract A woodworking jig for producing round workpieces employs a floating casting which is moveably mounted between two fixed position end castings, said floating casting rotatably supporting in a detachable attachable manner a workpiece so that the edge of the workpiece may be brought into contact with a rotatable planar member having a sanding disk attached thereto.
Inventors
- 👤 Arnold B Reitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:16
CPC Classifications
B; B24; B24B; B24B5/00; B24B5/36; B24B5/02; B24B5/04; B24B5/045
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
167 words
A woodworking jig for producing a smoothly round wooden workpiece, comprising: a pair of end castings for mounting in a fixed position on a stable surface, said end castings having at least one unthreaded guide rod and a threaded drag rod attached therebetween; a floating casting having a threaded internal bore for receiving said threaded drag rod and at least one unthreaded internal bore for receiving said at least one unthreaded internal guide rod, said floating casting having a male drive shaft affixed thereto on the upper side thereof; a chuck for detachable attachment to the center region of a workpiece, said chuck having a female extension for rotatably fitting over said male drive shaft; and a planar member rotatably attached to said stable surface, said planar member having a sanding disk attached thereto for contacting and abrading the edge of said wooden workpiece so that movement of said floating casting will force said wooden workpiece against said sanding disk and cause said wooden workpiece to rotate.
Claim 2
Dependent Claim
167 words
A woodworking jig for producing a smoothly round wooden workpiece, comprising: a pair of end castings for mounting in a fixed position on a stable surface, said end castings having at least one unthreaded guide rod and a threaded drag rod attached therebetween; a floating casting having a threaded internal bore for receiving said threaded drag rod and at least one unthreaded internal bore for receiving said at least one unthreaded internal guide rod, said floating casting having a male drive shaft affixed thereto on the upper side thereof; a chuck for detachable attachment to the center region of a workpiece, said chuck having a female extension for rotatably fitting over said male drive shaft; and a planar member rotatably attached to said stable surface, said planar member having a sanding disk attached thereto for contacting and abrading the edge of said wooden workpiece so that movement of said floating casting will force said wooden workpiece against said sanding disk and cause said wooden workpiece to rotate.
Claim 3
Dependent Claim
31 words
A woodworking jig in accordance with claim 1 wherein the point of contact between said edge of said workpiece and said sanding disk lies in the lower hemisphere of said disk.
Claim 4
Dependent Claim
49 words
A woodworking jig in accordance with claim 2 wherein two unthreaded guide rods are employed, said unthreaded guide rods pass through unthreaded internal bores in the vicinity of the ends of each of said end castings, and said threaded drag rod is positioned midway between said unthreaded guide rods.
References Cited (Backward Citations)
US2325826A
Cited
US2642758A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |