US3331614A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Attachment for wheel chairs
Assignee: Individual
•
Filing: 1965-06-18
•
Granted: 1967-07-18
•
Expires: 1985-06-18
Abstract
No abstract record available.
Inventors
- 👤 Jimmy L Mcclintock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:28
CPC Classifications
A; A61; A61G; A61G5/00; A61G5/10; A61G5/1056; A61G5/1062; Y; Y10; Y10S; Y10S188/00; Y10S188/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
IN AN ATTACHMENT FOR COLLAPSIBLE WHEELCHAIRS HAVING A CHAIR FRAME AND A SEAT FRAME SLIDABLY MOUNTED ON SAID CHAIR FRAME, AN EXTERNALLY THREADED DRIVE SHAFT, GUIDES ON THE CHAIR FRAME AND ON THE SEAT FRAME THROUGH WHICH SAID DRIVE SHAFT IS EXTENDED, MEANS FOR SECURING SAID GUIDES TO SAID FRAMES, AN INTERNALLY THREADED NUT ON THE LOWER END OF SAID DRIVE SHAFT HAVING MEANS FOR ENGAGEMENT WITH THE GUID MOUNTED ON SAID SEAT FRAME TO LOCK SAID NUT AGAINST ROTATION AS THE DRIVE SHAFT IS ROTATED.
Claim 2
Dependent Claim
86 words
IN AN ATTACHMENT FOR COLLAPSIBLE WHEELCHAIRS HAVING A CHAIR FRAME AND A SEAT FRAME SLIDABLY MOUNTED ON SAID CHAIR FRAME, AN EXTERNALLY THREADED DRIVE SHAFT, GUIDES ON THE CHAIR FRAME AND ON THE SEAT FRAME THROUGH WHICH SAID DRIVE SHAFT IS EXTENDED, MEANS FOR SECURING SAID GUIDES TO SAID FRAMES, AN INTERNALLY THREADED NUT ON THE LOWER END OF SAID DRIVE SHAFT HAVING MEANS FOR ENGAGEMENT WITH THE GUID MOUNTED ON SAID SEAT FRAME TO LOCK SAID NUT AGAINST ROTATION AS THE DRIVE SHAFT IS ROTATED.
References Cited (Backward Citations)
US3122395A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-17 | 1971-01-16 | 1971-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-17 | 1975-01-16 | 1975-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-17 | 1979-01-16 | 1979-07-18 | $7700.00 | Window Closed / Lapsed |