Patent US4013281A successfully refreshed from Google Patents.
US4013281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Jig driving apparatus
Assignee: Citizen Watch Co Ltd
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Filing: 1975-09-26
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Granted: 1977-03-22
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Expires: 1995-09-26
Abstract
Abstract A jig driving apparatus for moving a jig plate and workpiece mounted thereon relative to a jig body. The jig driving apparatus comprises a driven shaft rotatably mounted in the center of the jig body and underneath the jig plate and a converter for converting rotation of said driven shaft into motion of the jig plate relative to the jig body.
Inventors
- 👤 Yoshio Tokunaga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:42
CPC Classifications
B; B23; B23Q; B23Q35/00; B23Q35/02; B23Q1/00; B23Q1/25; B23Q1/44; B23Q1/48
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
110 words
A jig of the type comprising a jig body, a jig operating plate movably coupled to said jig body, a jig plate for holding a workpiece mounted on the upper surface of said jig operating plate, and a jig driving means, the improvement comprising: a driven shaft, said shaft being hollow and rotatably mounted in the central part of said jig body; a means for converting rotation of said driven shaft to movement of said jig operating plate; and an operating shaft, said operating shaft being slidably mounted in said driven shaft thereby allowing up and down movement of said operating shaft for separating a workpiece from said jig plate.
Claim 2
Dependent Claim
110 words
A jig of the type comprising a jig body, a jig operating plate movably coupled to said jig body, a jig plate for holding a workpiece mounted on the upper surface of said jig operating plate, and a jig driving means, the improvement comprising: a driven shaft, said shaft being hollow and rotatably mounted in the central part of said jig body; a means for converting rotation of said driven shaft to movement of said jig operating plate; and an operating shaft, said operating shaft being slidably mounted in said driven shaft thereby allowing up and down movement of said operating shaft for separating a workpiece from said jig plate.
Claim 3
Dependent Claim
70 words
The jig according to claim 1 further comprising: first gear portions cut into the outer periphery of said jig body; and an adjusting rod having second gear portions formed on one end, said adjusting rod being rotatably and removably mounted on a base which holds said jig body rotatably thereon, and said second gear portions engaging with said first gear portions whereby rotating said adjusting rod rotates said jig body.
Claim 4
Dependent Claim
19 words
The jig according to claim 1 further comprising adjustable stops for setting the travel of said jig operating plate.
Claim 5
Dependent Claim
52 words
The jig according to claim 1 wherein the means for converting rotation of said driven shaft to movement of said jig operating plate comprises: an off-axis notched groove in the top of said driven shaft; and a pin projecting from the bottom of said operating plate and engaging with said notched groove.
Claim 6
Dependent Claim
47 words
The jig according to claim 1 wherein said operating shaft comprises: a disc coupled to the top of said driven shaft; and a vertically movable knockout pin, said pin extending through said jig plate, said jig operating plate, and said support plate and resting on said disc.
Claim 7
Dependent Claim
52 words
The jig according to claim 2 wherein said means for converting rotation of said driven shaft comprises: gear portions formed about the upper end of said driven shaft; and a rack of gear portions formed in said jig operating plate, said rack being engaged with said gear portions on said driven shaft.
Claim 8
Dependent Claim
23 words
The jig according to claim 2 further comprising at least one return spring for restoring said jig operating plate to a predetermined position.
Claim 9
Dependent Claim
35 words
The jig according to claim 6 further comprising: adjustable stops for setting the travel of said jig operating plate; and at least one return spring for restoring said jig operating plate to a predetermined position.
References Cited (Backward Citations)
US3083594A
Cited
US3829978A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-03-21 | 1980-09-20 | 1981-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-21 | 1984-09-20 | 1985-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-21 | 1988-09-20 | 1989-03-22 | $7700.00 | Window Closed / Lapsed |