HYDRAULIC ACTUATOR WITH PROXIMITY SENSOR OF LOCKED CONDITION
United States Patent 3453937

Inventors:
Haberman, Robert W.
Publication Date:
07/08/1969
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Assignee:
LIONEL PACIFIC INC
Primary Class:
92/5R
Other Classes:
92/25, 91/1
International Classes:
F15B15/26; F15B15/00; F15B15/26; F01B25/26; F01B31/12
US Patent References:
3020888Linear motion-producing device with lock
3024453Projectile sensing and indicating device
3160836Electrohydraulic actuator
3364361PISTON CONTROLLED IMPULSE GENERATING ARRANGEMENT
3392279Magnetic transducer railroad wheel detector
Foreign References:
GB924665A




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