Hook device for locking pantograph
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 29, 1986
Grant Date -
N/A
app pub date -
Dec 13, 1983
filing date -
Dec 16, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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Cited Art Landscape
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