Patent US3290824A successfully refreshed from Google Patents.
US3290824A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closure guiding device
Assignee: Amerock Corp
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Filing: 1965-02-08
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Granted: 1966-12-13
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Expires: 1985-02-08
Abstract
No abstract record available.
Inventors
- 👤 Lloyd L Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:29
CPC Classifications
E; E05; E05D; E05D15/00; E05D15/06; E05D15/0621; E05D15/066; E05D15/0691
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
161 words
IN A SLIDING CLOSURE ASSEMBLY INCLUDING A TRACK AND A CLOSURE HAVING A WALL GENERALLY PARALLEL TO AND CONFRONTING SAID TRACK FOR MOVEMENT ALONG THE LATTER DURING MOVEMENT OF THE CLOSURE, SAID WALL HAVING AN OPENING THEREIN, THE IMPROVEMENT COMPRISING AN ELONGATED FLAT SPRING HAVING ONE END FASTENED TO SAID WALL ON ONE SIDE OF SAID OPENING AND A FREE END PORTION EXTENDING GENERALLY ACROSS THE OPENING, SAID FREE END PORTION BEING STRESSED AND BENT INWARDLY FROM THE PLANE OF SAID WALL, A ROLLER ASSEMBLY MOUNTED ON SAID FREE END PORTION AND INCLUDING A ROLLER HAVING A PERIPHERAL EDGE DISPOSED OUTSIDE SAID WALL AND IN ROLLING ENGAGEMENT WITH SAID TRACK, AND OPPOSED ABUTMENTS ON SAID ROLLER ASSEMBLY AND SAID CLOSURE ADJACENT SAID OPENING FOR LIMITING OUTWARD MOVEMENT OF SAID ROLLER, SAID SPRING URGING SAID ROLLER TOWARD A PREDETERMINED EXTENDED POSITION IN WHICH SAID ABUTMENTS ARE IN ENGAGEMENT, AND SAID ABUTMENTS PERMITTING INSERTION OF THE ROLLER ASSEMBLY THROUGH SAID OPENING DURING INSTALLATION.
Claim 2
Dependent Claim
161 words
IN A SLIDING CLOSURE ASSEMBLY INCLUDING A TRACK AND A CLOSURE HAVING A WALL GENERALLY PARALLEL TO AND CONFRONTING SAID TRACK FOR MOVEMENT ALONG THE LATTER DURING MOVEMENT OF THE CLOSURE, SAID WALL HAVING AN OPENING THEREIN, THE IMPROVEMENT COMPRISING AN ELONGATED FLAT SPRING HAVING ONE END FASTENED TO SAID WALL ON ONE SIDE OF SAID OPENING AND A FREE END PORTION EXTENDING GENERALLY ACROSS THE OPENING, SAID FREE END PORTION BEING STRESSED AND BENT INWARDLY FROM THE PLANE OF SAID WALL, A ROLLER ASSEMBLY MOUNTED ON SAID FREE END PORTION AND INCLUDING A ROLLER HAVING A PERIPHERAL EDGE DISPOSED OUTSIDE SAID WALL AND IN ROLLING ENGAGEMENT WITH SAID TRACK, AND OPPOSED ABUTMENTS ON SAID ROLLER ASSEMBLY AND SAID CLOSURE ADJACENT SAID OPENING FOR LIMITING OUTWARD MOVEMENT OF SAID ROLLER, SAID SPRING URGING SAID ROLLER TOWARD A PREDETERMINED EXTENDED POSITION IN WHICH SAID ABUTMENTS ARE IN ENGAGEMENT, AND SAID ABUTMENTS PERMITTING INSERTION OF THE ROLLER ASSEMBLY THROUGH SAID OPENING DURING INSTALLATION.
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) | 1969-12-12 | 1970-06-13 | 1970-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-12 | 1974-06-13 | 1974-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-12 | 1978-06-13 | 1978-12-13 | $7700.00 | Window Closed / Lapsed |