US3610580A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trolley
Assignee: JOLODA TRANSPORT EQUIPMENT Ltd
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Filing: 1969-07-25
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Granted: 1971-10-05
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Expires: 1989-07-25
Abstract
Abstract The invention is for a trolley comprising a carriage and a loadcarrying member mounted on said carriage so that relative movement can take place between the carriage and the loadcarrying member in the direction of travel of the trolley, said relative movement being effected by a manually operable hydraulic ram. An inclined plane is provided on the load-carrying member and a roller-follower on the carriage, or vice versa. This inclined plane and roller-follower cooperate when said relative movement between the carriage and the load-carrying member takes place to raise the load-carrying member relatively to the carriage.
Inventors
- 👤 George Bernard Johnstone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:07
CPC Classifications
B; B62; B62B; B62B3/00; B62B3/04; B62B3/06; B62B3/0618; B65; B65G; B65G67/00; B65G67/02; B65G67/04; B65G67/20
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
373 words
In combination, a trolley comprising a plurality of carriages linked together in tandem, a load-carrying member mounted on said carriages, said carriages and said load-carrying member being relatively movable in the direction of travel of the trolley, a pressure fluid ram device operative to effect said relative movement between the carriages and the load-carrying member, an inclined plane means and a follower means movable on and along said inclined plane means, one of said means being on the carriages and the other on the load-carrying member, said inclined plane means and said follower means cooperating, when said relative movement between the carriages and the loadcarrying member takes place, to raise the load-carrying member relatively to the carriages, at least one trolley extension which also comprises a plurality of carriages linked together in tandem, a load-carrying member mounted on said carriages, said carriages and said load-carrying member being relatively movable in the direction of travel of the trolley, an inclined plane means and follower means movable on and along said inclined plane means, one of said means being on the carriages of the trolley extension and the other on the load-carrying member of the trolley extension, said last-mentioned inclined plane means and said last-mentioned follower means cooperating, when said relative movement between the carriages and the load-carrying member of the trolley extension takes place, to raise the loadcarrying member of the trolley extension relatively to the carriages thereon, coupling means on an end carriage of the trolley releasably engaging coupling means on a neighboring end carriage of the trolley extension, coupling means on the load carrying member of the trolley releasably engaging coupling means on the neighboring end of the load-carrying member of the trolley extension, all of said coupling means coupling the trolley extension to the trolley and transmitting said relative movement between the carriages and the load-carrying member of the trolley to the carriages and load-carrying member of the trolley extension whereby said load-carrying member of the trolley extension is raised simultaneously with the load-carrying member of the trolley, and rail for said trolley and trolley extension said rail comprising at least two rail sections and means for releasably connecting one section of said rail to the other section in end-to-end alignment.
Claim 2
Dependent Claim
373 words
In combination, a trolley comprising a plurality of carriages linked together in tandem, a load-carrying member mounted on said carriages, said carriages and said load-carrying member being relatively movable in the direction of travel of the trolley, a pressure fluid ram device operative to effect said relative movement between the carriages and the load-carrying member, an inclined plane means and a follower means movable on and along said inclined plane means, one of said means being on the carriages and the other on the load-carrying member, said inclined plane means and said follower means cooperating, when said relative movement between the carriages and the loadcarrying member takes place, to raise the load-carrying member relatively to the carriages, at least one trolley extension which also comprises a plurality of carriages linked together in tandem, a load-carrying member mounted on said carriages, said carriages and said load-carrying member being relatively movable in the direction of travel of the trolley, an inclined plane means and follower means movable on and along said inclined plane means, one of said means being on the carriages of the trolley extension and the other on the load-carrying member of the trolley extension, said last-mentioned inclined plane means and said last-mentioned follower means cooperating, when said relative movement between the carriages and the load-carrying member of the trolley extension takes place, to raise the loadcarrying member of the trolley extension relatively to the carriages thereon, coupling means on an end carriage of the trolley releasably engaging coupling means on a neighboring end carriage of the trolley extension, coupling means on the load carrying member of the trolley releasably engaging coupling means on the neighboring end of the load-carrying member of the trolley extension, all of said coupling means coupling the trolley extension to the trolley and transmitting said relative movement between the carriages and the load-carrying member of the trolley to the carriages and load-carrying member of the trolley extension whereby said load-carrying member of the trolley extension is raised simultaneously with the load-carrying member of the trolley, and rail for said trolley and trolley extension said rail comprising at least two rail sections and means for releasably connecting one section of said rail to the other section in end-to-end alignment.
Claim 3
Dependent Claim
73 words
The combination claimed in claim 1 wherein neighboring ends of the rail sections have respectively a hook member and a part to be engaged by said hook member to secure the sections together, the hook member on the one section being cranked so that by angularly raising and lowering one section of track relatively to the other section said hook member can be engaged or disengaged from said part on the other section.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-04 | 1975-04-05 | 1975-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-04 | 1979-04-05 | 1979-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-04 | 1983-04-05 | 1983-10-05 | $7700.00 | Window Closed / Lapsed |