US3708165A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Charging device for automatic punchpresses
Assignee: Individual
•
Filing: 1971-07-01
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Granted: 1973-01-02
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Expires: 1991-07-01
Abstract
Abstract A charging device for automatic punch presses comprises an immovable platform, a lifting table accommodating thereon a cassette with sheet material, said cassette being lifted while the sheets are fed to the zone of stamping, and a bracket-shaped frame displaceable along an arc in a vertical plane and serving to displace the emptied cassette downwards onto the immovable platform. Arranged from the inside on the sides of the frame are retainers intended for holding the lifted cassette after lowering the lifting table.
Inventors
- 👤 R Sarkisov
- 👤 E Stephanian
- 👤 V Gilev
- 👤 V Opov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:49
CPC Classifications
B; B21; B21D; B21D43/00; B21D43/20; B21D43/24
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
149 words
A charging device for automatic punch presses, comprising: a bedplate; an immovable platform mounted on said bedplate; a lifting table mounted on said bedplate close to said immovable platform; a cassette for sheet material, mounted on said lifting table and adapted to be lifted by the latter while the sheets are removed from the cassette and fed to the zone of stamping; a bracket-shaped frame arranged above said lifting table and intended to displace said cassette, when emptied, downwards onto said immovable platform; retainers provided from the inside on the sides of said bracket-shaped frame and adapted to hold said cassette after the lowering of said lifting table; a mechanism intended to displace said bracket-shaped frame along an arc in a vertical plane and mounted on said bedplate; and a mechanism adapted to separate the sheets and feed them into the zone of stamping, mounted above said lifting table.
Claim 2
Dependent Claim
149 words
A charging device for automatic punch presses, comprising: a bedplate; an immovable platform mounted on said bedplate; a lifting table mounted on said bedplate close to said immovable platform; a cassette for sheet material, mounted on said lifting table and adapted to be lifted by the latter while the sheets are removed from the cassette and fed to the zone of stamping; a bracket-shaped frame arranged above said lifting table and intended to displace said cassette, when emptied, downwards onto said immovable platform; retainers provided from the inside on the sides of said bracket-shaped frame and adapted to hold said cassette after the lowering of said lifting table; a mechanism intended to displace said bracket-shaped frame along an arc in a vertical plane and mounted on said bedplate; and a mechanism adapted to separate the sheets and feed them into the zone of stamping, mounted above said lifting table.
Claim 3
Dependent Claim
76 words
A cHarging device of claim 1, wherein the mechanism adapted to displace the bracket-shaped frame along an arc in a vertical plane is essentially a rack-and-pinion mechanism connected via articulated parallelograms with opposite sides of the frame, two neighboring apexes of each parallelogram being articulated on said frame while the other two apexes are connected with toothed wheels of said rack-and-pinion mechanism whose rack is connected with a drive adapted to impart reciprocation to said rack.
Claim 4
Dependent Claim
40 words
A charging device of claim 1, wherein the catches are fashioned as sinking spring-biased pins, each provided on the side facing the lifting table with a chamfer instrumental in sinking the pin under the effect of a cassette being lifted.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-02 | 1976-07-03 | 1977-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-02 | 1980-07-03 | 1981-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-02 | 1984-07-03 | 1985-01-02 | $7700.00 | Window Closed / Lapsed |