Patent US3309110A successfully refreshed from Google Patents.
US3309110A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Occupant-propelled wheelchair
Assignee: Individual
•
Filing: 1965-09-13
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Granted: 1967-03-14
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Expires: 1985-09-13
Abstract
No abstract record available.
Inventors
- 👤 Donald L Buhner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:34
CPC Classifications
A; A61; A61G; A61G5/00; A61G5/02; A61G5/021; A61G5/022; A61G5/023; A61G5/024; A61G5/025; Y; Y10; Y10T; Y10T74/00; Y10T74/15; Y10T74/1526; Y10T74/1553; Y10T74/1555; Y10T74/1556
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A DEVICE TO BE MOUNTED UPON THE AXLE AND SUPPORT STRUCTURE OF A WHEELCHAIR ALLOWING AN INCAPACITATED PERSON TO APPLY FORCE TO THE WHEEL OF A WHEELCHAIR COMPRISING: (A) A HORIZONTAL MEMBER MOUNTED UPON THE WHEELCHAIR SUPPORT STRUCTURE; (B) A CENTER PIN MOUNTED UPON THE HORIZONTAL MEMBER; (C) A PROPELLING BAR ATTACHED TO THE HORIZONTAL MEMBER TO WHICH THE INCAPACITATED PERSON APPLIES A FORCE; (D) A DRIVE BAR MEMBER HAVING AN ELONGATED APERTURE
Claim 2
Independent Claim
73 words
A DEVICE TO BE MOUNTED UPON THE AXLE AND SUPPORT STRUCTURE OF A WHEELCHAIR ALLOWING AN INCAPACITATED PERSON TO APPLY FORCE TO THE WHEEL OF A WHEELCHAIR COMPRISING: (A) A HORIZONTAL MEMBER MOUNTED UPON THE WHEELCHAIR SUPPORT STRUCTURE; (B) A CENTER PIN MOUNTED UPON THE HORIZONTAL MEMBER; (C) A PROPELLING BAR ATTACHED TO THE HORIZONTAL MEMBER TO WHICH THE INCAPACITATED PERSON APPLIES A FORCE; (D) A DRIVE BAR MEMBER HAVING AN ELONGATED APERTURE
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) | 1970-03-13 | 1970-09-12 | 1971-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-13 | 1974-09-12 | 1975-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-13 | 1978-09-12 | 1979-03-14 | $7700.00 | Window Closed / Lapsed |