US3341647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for making dual-lip seals
Assignee: Federal Mogul LLC
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Filing: 1963-10-14
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Granted: 1967-09-12
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Expires: 1983-10-14
Abstract
No abstract record available.
Inventors
- 👤 Douglas J Aberle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:53
CPC Classifications
B; B29; B29D; B29D99/00; B29D99/0053; B29K; B29K2021/00; B29L; B29L2031/00; B29L2031/26; Y; Y10; Y10S; Y10S425/00; Y10S425/025; Y10S425/047; Y10S425/812
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
127 words
A METHOD OF MOLDING ELASTOMERIC MEMBERS IN A PLURAL-ELEMENT MOLD HAVING A MOLD CAVITY THAT PROVIDES SHARP EDGES BETWEEN TWO STATIONARY PARTS OF THE MOLD, COMPRISING: CLOSING SAID MOLD UPON UNCURED ELASTOMER SO AS TO DEFORM IT AND DEVELOP HYDRAULIC PRESSURE BY THE DEFORMATION, EMPLOYING SAID ELASTOMER AND ITS HYDRAULIC PRESSURE TO DRIVE THE AIR IN SAID CAVITY INTO A CORNER THEREIN AT ONE OF SAID SHARP EDGES, DRIVING THE AIR OUT BETWEEN THE SAID STATIONARY PARTS AT SAID EDGE, EMPLOYING SAID ELASTOMER TO FORCE AT LEAST ONE OF SAID TWO STATIONARY PARTS TO MOVE TOWARD THE OTHER ONE AND THEREBY TIGHTEN THE GAP BETWEEN SAID STATIONARY PARTS TO SEAL SAID EDGE AGAINST PASSAGE OF ELASTOMER AND FILL SAID CAVITY, AND CURING SAID ELASTOMER IN SAID MOLD.
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) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |