Patent US4970013A successfully refreshed from Google Patents.
Patent US3140097A successfully refreshed from Google Patents.
US3140097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Joints for laboratory apparatus
Assignee: Lurex Manufacturing Co
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Filing: 1962-04-06
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Granted: 1964-07-07
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Expires: 1982-04-06
Abstract
No abstract record available.
Inventors
- 👤 Paul R Luertzing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:38
CPC Classifications
B; B01; B01L; B01L3/00; B01L3/56; B01L3/565; Y; Y10; Y10S; Y10S277/00; Y10S277/91; Y10S285/00; Y10S285/911
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
A JOINT, WHICH COMPRISES A MALE MEMBER HAVING AN EXTERNAL GROUND SURFACE LYING ADJACENT TO ONE END OF THE MEMBER AND OF THE SHAPE OF A SURFACE OF REVOLUTION DECREASING IN DIAMETER FROM ITS INNER END TO ITS OUTER END, AND A CIRCUMFERENTIAL GROOVE AT THE INNER END OF THE SURFACE, A RESILIENT O-RING SEATED ON THE BOTTOM OF THE GROOVE AND PROJECTING OUT OF THE GROOVE, THE GROOVE BEING WIDER THAN THE DIAMETER OF THE CROSS-SECTION OF THE O-RING, AND A FEMALE MEMBER HAVING AN INTERNAL GROUND SURFACE SPACED INWARDLY FROM THE END OF THE MEMBER AND OF A SHAPE TO MATE WITH THE GROUND SURFACE OF THE MALE MEMBER, THE INTERNAL SURFACE OF THE FEMALE MEMBER OUTWARDLY FROM THE OUTER END OF THE GROUND SURFACE BEING SMOOTH AND BEING IN PART OF LESS AND IN PART OF GREATER DIAMETER THAN THE OVERALL DIAMETER OF THE O-RING SEATED IN THE GROOVE.
Claim 2
Dependent Claim
152 words
A JOINT, WHICH COMPRISES A MALE MEMBER HAVING AN EXTERNAL GROUND SURFACE LYING ADJACENT TO ONE END OF THE MEMBER AND OF THE SHAPE OF A SURFACE OF REVOLUTION DECREASING IN DIAMETER FROM ITS INNER END TO ITS OUTER END, AND A CIRCUMFERENTIAL GROOVE AT THE INNER END OF THE SURFACE, A RESILIENT O-RING SEATED ON THE BOTTOM OF THE GROOVE AND PROJECTING OUT OF THE GROOVE, THE GROOVE BEING WIDER THAN THE DIAMETER OF THE CROSS-SECTION OF THE O-RING, AND A FEMALE MEMBER HAVING AN INTERNAL GROUND SURFACE SPACED INWARDLY FROM THE END OF THE MEMBER AND OF A SHAPE TO MATE WITH THE GROUND SURFACE OF THE MALE MEMBER, THE INTERNAL SURFACE OF THE FEMALE MEMBER OUTWARDLY FROM THE OUTER END OF THE GROUND SURFACE BEING SMOOTH AND BEING IN PART OF LESS AND IN PART OF GREATER DIAMETER THAN THE OVERALL DIAMETER OF THE O-RING SEATED IN THE GROOVE.
References Cited (Backward Citations)
US2190220A
Cited
US2946606A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-07 | 1968-01-06 | 1968-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-07 | 1972-01-06 | 1972-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-07 | 1976-01-06 | 1976-07-07 | $7700.00 | Window Closed / Lapsed |