US3239872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Caster-wheel elevator mechanism
Assignee: Lincoln Carriage Corp
•
Filing: 1963-04-08
•
Granted: 1966-03-15
•
Expires: 1983-04-08
Abstract
No abstract record available.
Inventors
- 👤 John V Kitrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:57
CPC Classifications
B; B62; B62B; B62B5/00; B62B5/02; A; A61; A61G; A61G5/00; A61G5/06; B60; B60B; B60B33/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
IN A WHEEL ELEVATOR MECHANISM THE COMBINATION OF: A WHEEL HAVING AN AXLE AND A PERIPHERAL SURFACE; SAID PERIPHERAL SURFACE BEING ADAPTED TO ROLL ON A SUPPORTING SURFACE; MEANS SUPPORTED ON SAID AXLE; AND AN ELEVATING SHOE PIVOTALLY MOUNTED ON SAID MEANS ABOVE SAID AXLE; A SHOE PORTION OF SAID SHOE PROJECTING FORWARDLY AND ABOVE A PERIPHERAL PORTION OF SAID WHEEL ENGAGEABLE ON A SURFACE SUPPORTING IT; SAID SHOE PIVOTED TO MOVE ITS SHOE PORTION INTO CLOSE PROXIMITY AND TO A POSITION SLIGHTLY ABOVE THE PERIPHERAL PORTION OF SAID WHEEL SUPPORTED ON SAID SURFACE; SAID MEANS COMPRISING A CASTER FORK STRUCTURE; SAID SHOE PIVOTED ON SAID CASTER FORK STRUCTURE ABOVE SAID AXLE.
Claim 2
Dependent Claim
112 words
IN A WHEEL ELEVATOR MECHANISM THE COMBINATION OF: A WHEEL HAVING AN AXLE AND A PERIPHERAL SURFACE; SAID PERIPHERAL SURFACE BEING ADAPTED TO ROLL ON A SUPPORTING SURFACE; MEANS SUPPORTED ON SAID AXLE; AND AN ELEVATING SHOE PIVOTALLY MOUNTED ON SAID MEANS ABOVE SAID AXLE; A SHOE PORTION OF SAID SHOE PROJECTING FORWARDLY AND ABOVE A PERIPHERAL PORTION OF SAID WHEEL ENGAGEABLE ON A SURFACE SUPPORTING IT; SAID SHOE PIVOTED TO MOVE ITS SHOE PORTION INTO CLOSE PROXIMITY AND TO A POSITION SLIGHTLY ABOVE THE PERIPHERAL PORTION OF SAID WHEEL SUPPORTED ON SAID SURFACE; SAID MEANS COMPRISING A CASTER FORK STRUCTURE; SAID SHOE PIVOTED ON SAID CASTER FORK STRUCTURE ABOVE SAID AXLE.
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) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |