Patent US3216531A successfully refreshed from Google Patents.
US3216531A
Expired / Lapsed
US
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Material handling devices
Assignee: MH Equipment Co Inc
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Filing: 1963-06-18
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Granted: 1965-11-09
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Expires: 1983-06-18
Abstract
No abstract record available.
Inventors
- 👤 Jesse B Hutchinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:55
CPC Classifications
B; B60; B60P; B60P1/00; B60P1/02; B62; B62B; B62B5/00; B62B5/04; B62B5/049
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
A CART INCLUDING: A PLATFORM; WHEELS ROTATABLY SECURED TO SAID PLATFORM FOR SUPPORTING SAID PLATFORM; SUPPORT MEANS MOUNTED ON SAID PLATFORM AND MOVABLE VERTICALLY BELOW AND RELATIVE TO SAID PLATFORM BETWEEN UPPER AND LOWER SUPPORTING POSITIONS, SAID PLATFORM BEING SUPPORTED ON SAID WHEELS WHEN SAID SUPPORT MEANS ARE IN SAID UPPER POSITION AND BEING SUPPORTED ON SAID SUPPORT MEANS WHEN SAID SUPPORT MEANS ARE IN SAID LOWER SUPPORTING POSITION; AND MEANS CONNECTING SAID SUPPORT MEANS TO SAID PLATFORM AND OPERABLE TO MOVE SAID SUPPORT MEANS BETWEEN SAID UPPER AND LOWER POSITIONS, SAID CONNECTING MEANS INCLUDING MEANS FOR LOCKING SAID SUPPORT MEANS IN SAID UPPER POSITION BY THE FORCE OF THE WEIGHT OF SAID SUPPORT MEANS WHEN SAID SUPPORT MEANS IS IN SAID UPPER POSITION AND FOR LOCKING SAID SUPPORT MEANS IN SAID LOWER POSITION BY THE FORCE TENDING TO MOVE SAID SUPPORT MEANS FROM SAID LOWER POSITION TOWARD SAID UPPER POSITION.
Claim 2
Dependent Claim
151 words
A CART INCLUDING: A PLATFORM; WHEELS ROTATABLY SECURED TO SAID PLATFORM FOR SUPPORTING SAID PLATFORM; SUPPORT MEANS MOUNTED ON SAID PLATFORM AND MOVABLE VERTICALLY BELOW AND RELATIVE TO SAID PLATFORM BETWEEN UPPER AND LOWER SUPPORTING POSITIONS, SAID PLATFORM BEING SUPPORTED ON SAID WHEELS WHEN SAID SUPPORT MEANS ARE IN SAID UPPER POSITION AND BEING SUPPORTED ON SAID SUPPORT MEANS WHEN SAID SUPPORT MEANS ARE IN SAID LOWER SUPPORTING POSITION; AND MEANS CONNECTING SAID SUPPORT MEANS TO SAID PLATFORM AND OPERABLE TO MOVE SAID SUPPORT MEANS BETWEEN SAID UPPER AND LOWER POSITIONS, SAID CONNECTING MEANS INCLUDING MEANS FOR LOCKING SAID SUPPORT MEANS IN SAID UPPER POSITION BY THE FORCE OF THE WEIGHT OF SAID SUPPORT MEANS WHEN SAID SUPPORT MEANS IS IN SAID UPPER POSITION AND FOR LOCKING SAID SUPPORT MEANS IN SAID LOWER POSITION BY THE FORCE TENDING TO MOVE SAID SUPPORT MEANS FROM SAID LOWER POSITION TOWARD SAID UPPER POSITION.
References Cited (Backward Citations)
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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) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |