Patent US3734324A successfully refreshed from Google Patents.
US3734324A
Expired / Lapsed
US
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Container handling frame
Assignee: Hyster Co
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Filing: 1970-08-05
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Granted: 1973-05-22
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Expires: 1990-08-05
Abstract
Abstract A frame for handling cargo containers is disclosed. A vertical member of the frame is mounted on the carriage of an industrial lift truck having an extensible mast. The housing at the upper end of the vertical member contains a pair of transversely extensible arms. Powered by a pair of hydraulic motors, these arms may be moved inwardly or outwardly along their longitudinal axis by the truck operator so as to position each arm to engage the upper corner fittings of a cargo container from one side. When thus positioned and engaged, the frame and truck may lift and move the cargo container.
Inventors
- 👤 P Lynch
- 👤 D Oldfield
- 👤 D Zifka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:52
CPC Classifications
B; B66; B66F; B66F9/00; B66F9/06; B66F9/075; B66F9/12; B66F9/18; B66F9/186
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
193 words
A cargo container handling frame including an upright member; means for mounting said frame on a lift truck carriage; unitary housing means mounted horizontally on said upright member; bumper means mounted at the lower end of said upright member; front and rear load lifting arms reciprocally mounted in a horizontal plane in side by side relation at least partially within said housing; a first hook mounted on said rear arm, the load engaging portion of said hook positioned below and protruding substantially outward from the front side of said arm so as to apply torque about the longitudinal axis of said arm when lifting a load; a second hook mounted on said front arm, the load engaging portion of Said hook positioned below and to the forward side of the longitudinal axis of said arm so as to apply a torque about said longitudinal axis substantially equal to and opposite that applied to said rear arm when lifting a load; whereby torque forces applied to said rear arm acting within said housing oppose and substantially cancel torque forces applied to said front arm acting within said housing when said arms lift a load.
Claim 2
Dependent Claim
193 words
A cargo container handling frame including an upright member; means for mounting said frame on a lift truck carriage; unitary housing means mounted horizontally on said upright member; bumper means mounted at the lower end of said upright member; front and rear load lifting arms reciprocally mounted in a horizontal plane in side by side relation at least partially within said housing; a first hook mounted on said rear arm, the load engaging portion of said hook positioned below and protruding substantially outward from the front side of said arm so as to apply torque about the longitudinal axis of said arm when lifting a load; a second hook mounted on said front arm, the load engaging portion of Said hook positioned below and to the forward side of the longitudinal axis of said arm so as to apply a torque about said longitudinal axis substantially equal to and opposite that applied to said rear arm when lifting a load; whereby torque forces applied to said rear arm acting within said housing oppose and substantially cancel torque forces applied to said front arm acting within said housing when said arms lift a load.
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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) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |