US3967742A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hay stack mover
Assignee: Deere and Co
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Filing: 1975-01-31
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Granted: 1976-07-06
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Expires: 1995-01-31
Abstract
Abstract Hay stacks and bales are loaded, transported and unloaded by a single man. Pivotal lifting tines carried by a mast which attaches to a tractor three-point hitch are maneuvered under a stack or bale. Lift assist wheels coupled with the mast raise the loaded tines to transport the load. A clamp means secures the stack or bale during transport and the tapered tines permit ease of tine withdrawal from unloaded stacks and bales.
Inventors
- 👤 Harry Mathais Meinert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:30
CPC Classifications
A; A01; A01D; A01D87/00; A01D87/12; A01D87/127; A01D87/003; A01D87/0053; A01D87/0061
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
A load lifting device comprising: an upstanding mast having means thereon for detachably securing said mast to a tractor three-point hitch; a pair of independent lift arms rockably secured to the mast end portions and projecting rearwardly therefrom; lift wheels carried on the arms adjacent their rear ends; an extensible and retractable power means between the mast and each arm for adjusting the latter; a plurality of transversely spaced apart tine members each member pivotally secured at its forward end for vertical movement with respect to said mast and extending rearwardly therefrom; means on the mast for limiting each tine's vertical movement; an elongated boom pivotally carried by said mast, extending in vertically spaced and overlying relation to the tines; power means coupled with said boom for swinging the boom; and a downwardly facing clamping structure articulately mounted on the boom for securing a load on the tines.
Claim 2
Dependent Claim
148 words
A load lifting device comprising: an upstanding mast having means thereon for detachably securing said mast to a tractor three-point hitch; a pair of independent lift arms rockably secured to the mast end portions and projecting rearwardly therefrom; lift wheels carried on the arms adjacent their rear ends; an extensible and retractable power means between the mast and each arm for adjusting the latter; a plurality of transversely spaced apart tine members each member pivotally secured at its forward end for vertical movement with respect to said mast and extending rearwardly therefrom; means on the mast for limiting each tine's vertical movement; an elongated boom pivotally carried by said mast, extending in vertically spaced and overlying relation to the tines; power means coupled with said boom for swinging the boom; and a downwardly facing clamping structure articulately mounted on the boom for securing a load on the tines.
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) | 1979-07-06 | 1980-01-05 | 1980-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-06 | 1984-01-05 | 1984-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-06 | 1988-01-05 | 1988-07-06 | $7700.00 | Window Closed / Lapsed |