US3193884A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mold for multiple-lip seal
Assignee: Federal Mogul Bower Bearings Inc
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Filing: 1964-05-04
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Granted: 1965-07-13
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Expires: 1984-05-04
Abstract
No abstract record available.
Inventors
- 👤 Robert N Haynie
- 👤 Lloyd E Voss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:05
CPC Classifications
B; B29; B29C; B29C37/00; B29C37/0003; B29C37/0014; B29C43/00; B29C43/02; B29C43/027; B29C43/18; B29C43/32; B29C43/36; B29C43/42; B29D; B29D99/00; B29D99/0053; B29C70/00; B29C70/68; B29K; B29K2021/00; B29L; B29L2031/00; B29L2031/26; Y; Y10; Y10S; Y10S264/00; Y10S264/57; Y10S264/67; Y10S425/00; Y10S425/047; Y10S425/058; Y10S425/812
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
176 words
A MOLD FOR MAKING MULTIPLE-LIP RADIAL SHAFT SEALS, COMPRISING AN UPPER MOLD ELEMENT, A LOWER MOLD ELEMENT, AN OUTER RING BOUNDING THE OUTER PERIPHERY OF THE MOLD CAVITY AND SEATING BETWEEN THE HOLDING APART SAID UPPER AND LOWER MOLD ELEMENTS, AND A PLURALITY OF INSERT WASHERS BETWEEN SAID UPPER AND LOWER MOLD ELEMENTS SEATING AGAINST SAID MOLD ELEMENTS WHEN SAID MOLD IS CLOSED, SAID WASHERS AND MOLD ELEMENTS HAVING MATING SURFACES, AT LEAST ONE OF EACH PAIR OF SURFACES BEING STEPPED AT A COMMON DISTANCE FROM AN AXIS TO PROVIDE (1) A PLURALITY OF GENERALLY RECTANGULAR CROSS-SECTION MOLD CAVITY PORTIONS BETWEEN THEM, WITH A PARTING LINE FOR EACH CAVITY PORTION SO THAT GAS IS RELEASED FROM EACH SAID CAVITY PORTION THROUGH SAID PARTING LINES, AND (2) A LIP-SEPARTING PORTION HAVING AN EXTREMITY WHERE EACH LIP-SEPARATING BODY OF ELASTOMER, SAID EXTREMITIES BEING AT SUCCESSIVELY DIFFERENT DISTANCES FROM SAID AXIS SO THAT THE LIPS MOLDED THEREBY ARE SUCCESSIVELY LONGER AND, WHEN SAID SEAL IS EXTRACTED FROM SAID MOLD, CAN BE PULLED FROM SAID MOLD CAVITY PORTIONS WITHOUT FRACTURE.
Claim 2
Dependent Claim
176 words
A MOLD FOR MAKING MULTIPLE-LIP RADIAL SHAFT SEALS, COMPRISING AN UPPER MOLD ELEMENT, A LOWER MOLD ELEMENT, AN OUTER RING BOUNDING THE OUTER PERIPHERY OF THE MOLD CAVITY AND SEATING BETWEEN THE HOLDING APART SAID UPPER AND LOWER MOLD ELEMENTS, AND A PLURALITY OF INSERT WASHERS BETWEEN SAID UPPER AND LOWER MOLD ELEMENTS SEATING AGAINST SAID MOLD ELEMENTS WHEN SAID MOLD IS CLOSED, SAID WASHERS AND MOLD ELEMENTS HAVING MATING SURFACES, AT LEAST ONE OF EACH PAIR OF SURFACES BEING STEPPED AT A COMMON DISTANCE FROM AN AXIS TO PROVIDE (1) A PLURALITY OF GENERALLY RECTANGULAR CROSS-SECTION MOLD CAVITY PORTIONS BETWEEN THEM, WITH A PARTING LINE FOR EACH CAVITY PORTION SO THAT GAS IS RELEASED FROM EACH SAID CAVITY PORTION THROUGH SAID PARTING LINES, AND (2) A LIP-SEPARTING PORTION HAVING AN EXTREMITY WHERE EACH LIP-SEPARATING BODY OF ELASTOMER, SAID EXTREMITIES BEING AT SUCCESSIVELY DIFFERENT DISTANCES FROM SAID AXIS SO THAT THE LIPS MOLDED THEREBY ARE SUCCESSIVELY LONGER AND, WHEN SAID SEAL IS EXTRACTED FROM SAID MOLD, CAN BE PULLED FROM SAID MOLD CAVITY PORTIONS WITHOUT FRACTURE.
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) | 1968-07-12 | 1969-01-11 | 1969-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-12 | 1973-01-11 | 1973-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-12 | 1977-01-11 | 1977-07-13 | $7700.00 | Window Closed / Lapsed |