Patent US3333871A successfully refreshed from Google Patents.
US3333871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conduit fittings
Assignee: SCREW MACHINE PRODUCTS CO
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Filing: 1965-03-18
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Granted: 1967-08-01
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Expires: 1985-03-18
Abstract
No abstract record available.
Inventors
- 👤 Theodore H Abbiati
- 👤 Orial E Chetelat
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:00
CPC Classifications
F; F16; F16L; F16L35/00; F16L33/00; F16L33/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
IN COMBINATION, A NIPPLE FITTING HAVING AN EXTERNALLY BARBED PORTION FOR INSERTION INTO THE FREE END OF A CONDUIT, AN EXTERNALLY THREADED PORTION, AND A WRENCH-ENGAGING PORTION INTERMEDIATE SAID BARBED PORTION AND SAID THREADED PORTION, SAID FITTING HAVING MEANS DEFINING A BORE THROUGH SAID BARBED PORTION, MEANS DEFINING A COUNTER BORE IN SAID THREADED PORTION, SAID COUNTER BORE BEING LARGER THAN SAID BORE, AN INTERMEDIATE SLOPING SHOULDER CONNECTING SAID BORE AND SAID COUNTER BORE, AND A CONDUIT REINFORCING SPRING INSERTED IN SAID BORE AND COUNTER BORE, SAID SPRING HAVING CONICALLY ENLARGED COIL PORTIONS AT ONE END THEREOF FOR FRICTIONALLY AND SNUGLY ENGAGING SAID SLOPING SHOULDER, WHEREBY SAID SPRING IS TIGHTLY HELD WITHIN SAID NIPPLE.
Claim 2
Dependent Claim
114 words
IN COMBINATION, A NIPPLE FITTING HAVING AN EXTERNALLY BARBED PORTION FOR INSERTION INTO THE FREE END OF A CONDUIT, AN EXTERNALLY THREADED PORTION, AND A WRENCH-ENGAGING PORTION INTERMEDIATE SAID BARBED PORTION AND SAID THREADED PORTION, SAID FITTING HAVING MEANS DEFINING A BORE THROUGH SAID BARBED PORTION, MEANS DEFINING A COUNTER BORE IN SAID THREADED PORTION, SAID COUNTER BORE BEING LARGER THAN SAID BORE, AN INTERMEDIATE SLOPING SHOULDER CONNECTING SAID BORE AND SAID COUNTER BORE, AND A CONDUIT REINFORCING SPRING INSERTED IN SAID BORE AND COUNTER BORE, SAID SPRING HAVING CONICALLY ENLARGED COIL PORTIONS AT ONE END THEREOF FOR FRICTIONALLY AND SNUGLY ENGAGING SAID SLOPING SHOULDER, WHEREBY SAID SPRING IS TIGHTLY HELD WITHIN SAID NIPPLE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-31 | 1971-01-30 | 1971-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-31 | 1975-01-30 | 1975-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-31 | 1979-01-30 | 1979-08-01 | $7700.00 | Window Closed / Lapsed |