Patent US3145857A successfully refreshed from Google Patents.
US3145857A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mobile lift crane and vehicle tow hoist
Assignee: Individual
•
Filing: 1962-12-06
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Granted: 1964-08-25
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Expires: 1982-12-06
Abstract
No abstract record available.
Inventors
- 👤 Hayman Max
- 👤 Ernest G Hellenga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:21
CPC Classifications
B; B60; B60P; B60P3/00; B60P3/12; B66; B66C; B66C23/00; B66C23/18; B66C23/36; B66C23/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
A MOBILE CRANE AND HOIST COMPRISING, A HORIZONTAL FRAME HAVING FORWARDLY PROJECTING SPACED SIDE ARMS WITH FLOOR ENGAGING ROLLERS ON THEIR FORWARD ENDS, MEANS CONNECTING THE REAR ENDS OF SAID SIDE ARMS, SWIVEL CASTER WHEELS MOUNTED ON THE REAR OF SAID FRAME, AN UPRIGHT POST MOUNTED TOWARD THE REAR OF SAID FRAME, A CRANE BOOM ARM PIVOTED TO THE TOP OF SAID POST AND PROJECTING FORWARDLY OVER THE SPACES BETWEEN THE ARMS OF SAID FRAME, AN INCLINED BRACE BAR BRACING THE TOP OF SAID POST TO THE REAR OF SAID FRAME, A TRANSVERSE TOWING SLING BAR HAVING ITS CENTER SLIDABLY CONNECTED TO SAID BRACE BAR, MECHANICAL ADVANTAGE MEANS MOUNTED ON SAID FRAME FOR RAISING AND LOWERING SAID SLING BAR AND SAID BOOM ARM, A TRANSVERSELY SPACED PAIR OF HIGH SPEED ROAD WHEELS VERTICALLY ADJUSTABLY MOUNTED AT THE REAR OF SAID FRAME,
Claim 2
Dependent Claim
141 words
A MOBILE CRANE AND HOIST COMPRISING, A HORIZONTAL FRAME HAVING FORWARDLY PROJECTING SPACED SIDE ARMS WITH FLOOR ENGAGING ROLLERS ON THEIR FORWARD ENDS, MEANS CONNECTING THE REAR ENDS OF SAID SIDE ARMS, SWIVEL CASTER WHEELS MOUNTED ON THE REAR OF SAID FRAME, AN UPRIGHT POST MOUNTED TOWARD THE REAR OF SAID FRAME, A CRANE BOOM ARM PIVOTED TO THE TOP OF SAID POST AND PROJECTING FORWARDLY OVER THE SPACES BETWEEN THE ARMS OF SAID FRAME, AN INCLINED BRACE BAR BRACING THE TOP OF SAID POST TO THE REAR OF SAID FRAME, A TRANSVERSE TOWING SLING BAR HAVING ITS CENTER SLIDABLY CONNECTED TO SAID BRACE BAR, MECHANICAL ADVANTAGE MEANS MOUNTED ON SAID FRAME FOR RAISING AND LOWERING SAID SLING BAR AND SAID BOOM ARM, A TRANSVERSELY SPACED PAIR OF HIGH SPEED ROAD WHEELS VERTICALLY ADJUSTABLY MOUNTED AT THE REAR OF SAID FRAME,
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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) | 1967-08-25 | 1968-02-24 | 1968-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-25 | 1972-02-24 | 1972-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-25 | 1976-02-24 | 1976-08-25 | $7700.00 | Window Closed / Lapsed |