Patent US5760754A successfully refreshed from Google Patents.
Patent US2984335A successfully refreshed from Google Patents.
US3389934A
Expired / Lapsed
US
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Adjustable connector for collapsible cross-braces for wheelechairs
Assignee: Everest and Jennings Inc
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Filing: 1967-01-09
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Granted: 1968-06-25
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Expires: 1987-01-09
Abstract
No abstract record available.
Inventors
- 👤 Fenton F Sully
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:22
CPC Classifications
A; A61; A61G; A61G5/00; A61G5/08; A61G5/0808; A61G5/0816; A61G5/0825; F; F16; F16B; F16B7/00; F16B7/04; F16B7/044; F16B7/048; F16B7/0486; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32114; Y10T403/32131; Y10T403/32147; Y10T403/32606
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A WHEELCHAIR COMPRISING SIDE FRAMES, EACH OF WHICH HAS A LOWER LONGITUDINAL TUBULAR MEMBER WITH UPRIGHTS EXTENDING UPWARDLY FROM FRONT AND REAR PORTIONS THEREOF, A PAIR OF CROSSED AND PIVOTALLY CONNECTED CROSS-BRACE ELEMENTS HAVING THEIR UPPER ENDS CONNECTED RESPECTIVELY TO AN UPPER PORTION OF ONE OF SAID SIDE FRAMES, A CROSS-BRACE CONNECTOR COMPRISING A PAIR OF COMPLEMENTARY INTERNALLY ROUNDED CONNECTOR SADDLES HAVING MEANS CONNECTING THEM TO THE LOWER END OF A CROSS-BRACE ELEMENT AND TO EACH OTHER WITH THE SADDLES EMBRACING SAID LOWER LONGITUDINAL FRAME MEMBER BETWEEN SAID UPRIGHTS, ONE EACH OF SAID LOWER LONGITUDINAL TUBULAR FRAME MEMBER AND CROSS-BRACE CONNECTOR HAVING, RESPECTIVELY, A SLOT AND A DETENT MOVABLE THEREIN, THE SLOT BEING ELONGATED ON AN ARC PARTIALLY ABOUT THE CIRCUMFERENCE OF SAID LOWER LONGITUDINAL TUBULAR FRAME MEMBER.
Claim 2
Dependent Claim
128 words
A WHEELCHAIR COMPRISING SIDE FRAMES, EACH OF WHICH HAS A LOWER LONGITUDINAL TUBULAR MEMBER WITH UPRIGHTS EXTENDING UPWARDLY FROM FRONT AND REAR PORTIONS THEREOF, A PAIR OF CROSSED AND PIVOTALLY CONNECTED CROSS-BRACE ELEMENTS HAVING THEIR UPPER ENDS CONNECTED RESPECTIVELY TO AN UPPER PORTION OF ONE OF SAID SIDE FRAMES, A CROSS-BRACE CONNECTOR COMPRISING A PAIR OF COMPLEMENTARY INTERNALLY ROUNDED CONNECTOR SADDLES HAVING MEANS CONNECTING THEM TO THE LOWER END OF A CROSS-BRACE ELEMENT AND TO EACH OTHER WITH THE SADDLES EMBRACING SAID LOWER LONGITUDINAL FRAME MEMBER BETWEEN SAID UPRIGHTS, ONE EACH OF SAID LOWER LONGITUDINAL TUBULAR FRAME MEMBER AND CROSS-BRACE CONNECTOR HAVING, RESPECTIVELY, A SLOT AND A DETENT MOVABLE THEREIN, THE SLOT BEING ELONGATED ON AN ARC PARTIALLY ABOUT THE CIRCUMFERENCE OF SAID LOWER LONGITUDINAL TUBULAR FRAME MEMBER.
References Cited (Backward Citations)
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Cited
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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) | 1971-06-25 | 1971-12-25 | 1972-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-25 | 1975-12-25 | 1976-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-25 | 1979-12-25 | 1980-06-25 | $7700.00 | Window Closed / Lapsed |