US3178759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door closer assembly
Assignee: Independent Lock Co
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Filing: 1962-08-10
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Granted: 1965-04-20
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Expires: 1982-08-10
Abstract
No abstract record available.
Inventors
- 👤 George P Patriquin
- 👤 Norman R Adler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:00
CPC Classifications
E; E05; E05F; E05F3/00; E05F3/04; E05F3/10; E05F3/102; E05Y; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/132
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
IN A DOOR CLOSER DEVICE HAVING A CASING, A SPRING POWERED, DAMPED CLOSER ASSEMBLY MOVABLY MOUNTED IN SAID CASING, AND A SPINDLE ROTATABLY MOUNTED IN SAID CASING IN DRIVING CONNECTION WITH SAID CLOSER ASSEMBLY TO SHIFT SAID ASSEMBLY RELATIVE TO SAID CASING UPON ROTATION OF SAID SPINDLE, AN ANNULAR CHANNEL FORMED ON SAID CASING CONCENTRICALLY WITH THE AXIS OF ROTATION OF SAID SPINDLE, A LINK ARM KEYED TO SAID SPINDLE AND INCLUDING AN OFFSET PORTION LYING WITHIN SAID CHANNEL, AND A LIMIT STOP MEMBER DISPOSED WITHIN SAID CHANNEL IN THE PATH OF SAID SEGMENT FOR RESTRICTING ANGULAR MOVEMENT ABOUT SAID AXIS OF SAID ARM WITH RESPECT TO SAID CASING.
Claim 2
Dependent Claim
109 words
IN A DOOR CLOSER DEVICE HAVING A CASING, A SPRING POWERED, DAMPED CLOSER ASSEMBLY MOVABLY MOUNTED IN SAID CASING, AND A SPINDLE ROTATABLY MOUNTED IN SAID CASING IN DRIVING CONNECTION WITH SAID CLOSER ASSEMBLY TO SHIFT SAID ASSEMBLY RELATIVE TO SAID CASING UPON ROTATION OF SAID SPINDLE, AN ANNULAR CHANNEL FORMED ON SAID CASING CONCENTRICALLY WITH THE AXIS OF ROTATION OF SAID SPINDLE, A LINK ARM KEYED TO SAID SPINDLE AND INCLUDING AN OFFSET PORTION LYING WITHIN SAID CHANNEL, AND A LIMIT STOP MEMBER DISPOSED WITHIN SAID CHANNEL IN THE PATH OF SAID SEGMENT FOR RESTRICTING ANGULAR MOVEMENT ABOUT SAID AXIS OF SAID ARM WITH RESPECT TO SAID CASING.
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) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |