US3278979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sliding door closer
Assignee: Individual
•
Filing: 1965-04-12
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Granted: 1966-10-18
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Expires: 1985-04-12
Abstract
No abstract record available.
Inventors
- 👤 Clyde H Clement
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:21
CPC Classifications
E; E05; E05F; E05F1/00; E05F1/08; E05F1/16; E05F3/00; E05F3/02; E05Y; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/132
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
A SLIDING DOOR CLOSER COMPRISING A PAIR OF HOLLOW TUBULAR MEMBERS DISPOSED IN TELESCOPING RELATIONSHIP WITH THEIR RESPECTIVE OUTWARDLY FACING ENDS CLOSED BY PLUG MEMBERS, THE OUTER TUBULAR MEMBERS HAVING AN INWARDLY FACING BEAD SLIDINGLY ENGAGING THE INNER TUBULAR MEMBER, RETAINERS ENGAGING INSIDE SAID PLUG MEMBERS AND ENGAGING A TENSION SPRING EXTENDING THEREBETWEEN, AT LEAST ONE OF SAID RETAINERS BEING THREADED TO PROVIDE A TENSION ADJUSTMENT, THE OPEN END OF SAID INNER TUBULAR MEMBER BEING BELL-SHAPED AND HAVING AN OUTWARDLY FACING PERIPHERAL BEAD DISPOSED BEHIND SAID BELL-SHAPED PORTION, A PERIPHERAL BELL-SHAPED SUCTION WASHER MOUNTED OVER SAID BELLSHAPED PORTION OF SAID INNER TUBULAR MEMBER AND SECURED BY A COLLAR, SAID SUCTION WASHER SLIDINGLY ENGAGING THE INNER SURFACE OF SAID OUTER TUBULAR MEMBER, A BLEEDER VALVE POSITIONED ON ONE OF SAID TUBULAR MEMBERS, AND BRACKET MEANS SECURED TO EACH OF SAID PLUG MEMBERS.
Claim 2
Dependent Claim
141 words
A SLIDING DOOR CLOSER COMPRISING A PAIR OF HOLLOW TUBULAR MEMBERS DISPOSED IN TELESCOPING RELATIONSHIP WITH THEIR RESPECTIVE OUTWARDLY FACING ENDS CLOSED BY PLUG MEMBERS, THE OUTER TUBULAR MEMBERS HAVING AN INWARDLY FACING BEAD SLIDINGLY ENGAGING THE INNER TUBULAR MEMBER, RETAINERS ENGAGING INSIDE SAID PLUG MEMBERS AND ENGAGING A TENSION SPRING EXTENDING THEREBETWEEN, AT LEAST ONE OF SAID RETAINERS BEING THREADED TO PROVIDE A TENSION ADJUSTMENT, THE OPEN END OF SAID INNER TUBULAR MEMBER BEING BELL-SHAPED AND HAVING AN OUTWARDLY FACING PERIPHERAL BEAD DISPOSED BEHIND SAID BELL-SHAPED PORTION, A PERIPHERAL BELL-SHAPED SUCTION WASHER MOUNTED OVER SAID BELLSHAPED PORTION OF SAID INNER TUBULAR MEMBER AND SECURED BY A COLLAR, SAID SUCTION WASHER SLIDINGLY ENGAGING THE INNER SURFACE OF SAID OUTER TUBULAR MEMBER, A BLEEDER VALVE POSITIONED ON ONE OF SAID TUBULAR MEMBERS, AND BRACKET MEANS SECURED TO EACH OF SAID PLUG MEMBERS.
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) | 1969-10-17 | 1970-04-18 | 1970-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-17 | 1974-04-18 | 1974-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-17 | 1978-04-18 | 1978-10-18 | $7700.00 | Window Closed / Lapsed |