Patent US3968282A successfully refreshed from Google Patents.
US3968282A
Expired / Lapsed
US
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Pressure pad of rubber or rubber-like materials for presses
Assignee: Continental AG
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Filing: 1974-12-16
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Granted: 1976-07-06
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Expires: 1994-12-16
Abstract
Abstract A pressure pad of rubber or rubber like synthetic material with a marginal rim portion connected to the remaining portion of the pad by a cross sectionally arc-shaped portion and adapted sealingly to engage a rigid holding element connectable to a press, said cross sectionally arc-shaped portion being provided with a slightly reduced wall section, e.g. in the form of a groove.
Inventors
- 👤 Horst Engel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:08
CPC Classifications
B; B21; B21D; B21D26/00; B21D26/02; B21D26/021; B21D26/029; B21D22/00; B21D22/10; B21D22/12; B30; B30B; B30B5/00; B30B5/02; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/24777; Y10T428/31504; Y10T428/31826
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
91 words
An elastic pressure pad of elastomeric material having in combination a marginal curved section with a radially inwardly directed annular connecting flange for sealing engagement with a rim portion of a rigid holding member for a press, said marginal curved section being provided with circular recess means having a relatively shallow depth so as not materially to weaken the wall thickness of said curved section, said recess means forming a fillet, said recess means being arranged within the region and in the direction of the medium radius of said curved section.
Claim 2
Dependent Claim
91 words
An elastic pressure pad of elastomeric material having in combination a marginal curved section with a radially inwardly directed annular connecting flange for sealing engagement with a rim portion of a rigid holding member for a press, said marginal curved section being provided with circular recess means having a relatively shallow depth so as not materially to weaken the wall thickness of said curved section, said recess means forming a fillet, said recess means being arranged within the region and in the direction of the medium radius of said curved section.
Claim 3
Dependent Claim
20 words
A pressure pad in combination according to claim 1, in which said recess means has a circle segmentshaped cross section.
Claim 4
Dependent Claim
35 words
A pressure pad in combination according to claim 1, in which the depth of said recess means amounts to from a fraction of to half of the radius of curvature of said marginal curved section.
References Cited (Backward Citations)
US2575734A
Cited
US3292343A
Cited
US3284858A
Cited
FR1496258A
Cited
US3528480A
Cited
US3664799A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-07-06 | 1980-01-05 | 1980-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-06 | 1984-01-05 | 1984-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-06 | 1988-01-05 | 1988-07-06 | $7700.00 | Window Closed / Lapsed |