US4056207A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Die changer
Assignee: Individual
•
Filing: 1976-07-15
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Granted: 1977-11-01
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Expires: 1996-07-15
Abstract
Abstract This device consists primarily of a portable frame, having a manually operated winch, which will elevate formed die clamps.
Inventors
- 👤 James W. Spilker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:08
CPC Classifications
B; B66; B66F; B66F9/00; B66F9/02; B21; B21J; B21J13/00; B21J13/08; B21J13/085; B30; B30B; B30B15/00; B30B15/02; B30B15/028; B66F9/06; B66F9/075; B66F9/12; B66F9/18; Y; Y10; Y10S; Y10S425/00; Y10S425/23
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
171 words
A die changing device, comprising, in combination, a frame, a pair of posts secured to said frame for supporting a pair of guide channels, a winch secured to said frame for raising and lowering support clamp plate, a die lifting fixture freely received upon shaft means extending from said support clamp plate, and die clamp finger means secured to said lifting fixture; said posts being parallel spaced apart and fixedly secured to parallel spaced apart and horizontal leg members of said frame, and said guide channels being parallel spaced apart and fixedly secured, one each in said posts, said guide channels freely receiving a pair of rollers secured to shaft means extending from the side edges of said support clamp plate, and said support clamp plate having a wire rope secured to it at its upper center, said wire rope extending from said winch and being carried upon upper pulley means secured within an upper portion of said posts, said winch being fixedly secured to said frame at its upper extremity.
Claim 2
Dependent Claim
171 words
A die changing device, comprising, in combination, a frame, a pair of posts secured to said frame for supporting a pair of guide channels, a winch secured to said frame for raising and lowering support clamp plate, a die lifting fixture freely received upon shaft means extending from said support clamp plate, and die clamp finger means secured to said lifting fixture; said posts being parallel spaced apart and fixedly secured to parallel spaced apart and horizontal leg members of said frame, and said guide channels being parallel spaced apart and fixedly secured, one each in said posts, said guide channels freely receiving a pair of rollers secured to shaft means extending from the side edges of said support clamp plate, and said support clamp plate having a wire rope secured to it at its upper center, said wire rope extending from said winch and being carried upon upper pulley means secured within an upper portion of said posts, said winch being fixedly secured to said frame at its upper extremity.
Claim 3
Dependent Claim
63 words
The combination, according to claim 1, wherein a sleeve extends through said clamp plate, said sleeve receiving an end of a shaft rotatably received within one end of said die lifting fixture, said die lifting fixture having spaced apart arm means which freely receives a second shaft having spring means at each end, and nut fastener means for tightening said die clamp fingers.
Claim 4
Dependent Claim
46 words
The combination according to claim 2, wherein said die clamp fingers are fixedly secured at right angles to said arms of said die lifting fixture, and groove means on the inside faces of said die clamp fingers, removably receive the outer peripheral rim of a die.
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) | 1980-10-31 | 1981-05-02 | 1981-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-31 | 1985-05-02 | 1985-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-31 | 1989-05-02 | 1989-11-01 | $7700.00 | Window Closed / Lapsed |