Electricity: transmission to vehicles – Collectors – Trolley retrievers
Patent
1983-12-13
1986-04-29
Reeves, Robert B.
Electricity: transmission to vehicles
Collectors
Trolley retrievers
191 65, B60L 514, B60L 530
Patent
active
045859108
ABSTRACT:
A hook device for locking a pantograph comprising an air operating cylinder with a piston coupled to a piston rod. A hook is pivotally mounted on the piston rod and is controlled to engage with a portion of the pantograph under control of the pneumatic pressure and an engagement with a mechanical stopper. The device is useful for rigidly locking the pantograph a lowered position while retaining a shock absorbing clearance.
REFERENCES:
patent: 879267 (1908-02-01), Jackson
patent: 888339 (1908-05-01), Macloskie
patent: 930698 (1909-08-01), Self
patent: 1000779 (1911-08-01), Case
patent: 1224216 (1917-05-01), Schaake et al.
patent: 1400101 (1921-12-01), Schaake
patent: 1682432 (1928-08-01), Smith
Hubbuch David F.
Kabushiki Kaisha Komatsu Seisakusho
Reeves Robert B.
Toyo Kenki Zeizo Kabushiki Kaisha
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