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US3844156A
Expired / Lapsed
US
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Bending apparatus
Assignee: Haemmerle AG Maschinenfabrik
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Filing: 1973-04-02
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Granted: 1974-10-29
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Expires: 1993-04-02
Abstract
Abstract A bending apparatus for bending sheets consists of a punch and a cooperating die provided with a longitudinally extending recess in its surface turned towards the punch; at the bottom of the recess a stop bar is provided with which the spacing between the bottom and the top of the die recess is adjustable.
Inventors
- 👤 E Hanni
- 👤 W Gygli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:59
CPC Classifications
B; B21; B21D; B21D5/00; B21D5/02; B21D5/0272; B01; B01J; B01J37/00; B01J37/0009; B21D5/0209
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
80 words
Bending apparatus for bending sheets, comprising a punch and a cooperating die, a longitudinally extending recess in the surface of the die turned toward the punch, a stop member disposed in the bottom of the recess and having bottom and top surfaces, and means for changing said stop member to provide a different spacing between said bottom and top surfaces in the die recess, whereby, the degree of bending can be varied by changing said spacing of the stop member.
Claim 2
Dependent Claim
80 words
Bending apparatus for bending sheets, comprising a punch and a cooperating die, a longitudinally extending recess in the surface of the die turned toward the punch, a stop member disposed in the bottom of the recess and having bottom and top surfaces, and means for changing said stop member to provide a different spacing between said bottom and top surfaces in the die recess, whereby, the degree of bending can be varied by changing said spacing of the stop member.
Claim 3
Dependent Claim
34 words
Bending apparatus according to claim 1 wherein the stop member has predetermined dimensions, is formed as a readily removable and replaceable insert, and forms part of a set of similar but differently dimensioned inserts.
Claim 4
Dependent Claim
18 words
Bending apparatus according to claim 1 wherein means are provided for adjusting the height of said stop member.
Claim 5
Dependent Claim
65 words
Bending apparatus according to claim 3 wherein substantially the whole length of the bottom surface of the recess in the die is provided with a number of sawteeth-like oblique flat surfaces and there are, for cooperation with said flat surfaces, corresponding bevelled surfaces on the bottom of the stop member, said pair of surfaces constituting the means for adjusting the height of the stop member.
References Cited (Backward Citations)
US824866A
Cited
US2199864A
Cited
US2415931A
Cited
US2826947A
Cited
US3146819A
Cited
US3675463A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-28 | 1978-04-29 | 1978-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-28 | 1982-04-29 | 1982-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-28 | 1986-04-29 | 1986-10-29 | $7700.00 | Window Closed / Lapsed |