US3193871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hanger for sliding doors
Assignee: Lawrence Brothers Inc
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Filing: 1963-04-05
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Granted: 1965-07-13
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Expires: 1983-04-05
Abstract
No abstract record available.
Inventors
- 👤 Robert E Foltz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:25
CPC Classifications
E; E05; E05D; E05D15/00; E05D15/06; E05D15/0621; E05D15/0626; E05D15/063; E05D15/0634; E05D15/0639; E05Y; E05Y2201/00; E05Y2201/60; E05Y2201/622; E05Y2201/64; E05Y2600/00; E05Y2600/10; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/132
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
169 words
IN A MOUNTING ARRANGEMENT FOR SLIDING DOORS, THE COMBINATION COMPRISING: GUIDE TRACK MEANS ADAPTED TO BE ATTACHED TO THE TOP JAMB OF A DOOR OPENING AND INCLUDING PARALLEL TRACK ELEMENTS HAVING SPACED CONFRONTING EDGES; A CARRIAGE UNIT ADAPTED FOR TRANSPORTABLE RELOCATION IN SAID GUIDE TRACK MEANS, INCLUDING A TRUCK ASSEMBLY HAVING A VERTICAL BORE, SAID CARRIAGE UNIT FURTHER INCLUDING AN INTERNALLY THREADED MEMBER SLIDABLY RECEIVED IN SAID BORE AND HAVING A HEAD OVERLYING A TRUCK ASSEMBLY, A SPRING SURROUNDING SAID MEMBER BETWEEN SAID HEAD AND SAID TRUCK ASSEMBLY RESILIENTLY TO SUPPORT A DOOR SUSPENDED FROM SAID MEMBER, AND A BODY OF RESINOUS ANTI-FRICTION MATERIAL FIXED TO SAID MEMBER BENEATH SAID CARRIAGE UNIT TO HOLD SAID UNIT IN POSITION AGAINST THE FORCE OF SAID SPRING, SAID BODY HAVING PARALLEL OPPOSITE SIDES SPACED APART TO COOPERATE WITH THE CONFRONTING EDGES OF SAID TRACK ELEMENTS IN SILENTLY HOLDING SAID MEMBER AGAINST ROTATION; AND A SUSPENSION ARRANGEMENT INCLUDING A BOLT THREADEDLY ENGAGING SAID MEMBER, MEANS ON SAID BOLT COOPERATING IN MOUNTING A DOOR
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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) | 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 |