Motors: expansible chamber type – With correlated control of motive fluid and locking means – Common or interconnected valve means control motive fluid...
Patent
1977-10-21
1980-01-29
Shedd, Wayne L.
Motors: expansible chamber type
With correlated control of motive fluid and locking means
Common or interconnected valve means control motive fluid...
92 24, 92 27, 91 44, 188 67, 74531, 403 31, F15B 1526
Patent
active
041855396
ABSTRACT:
Disclosed is a mechanical locking device for locking a rod in a conventional hydraulic actuator, such as a hydraulic cylinder or a rotary actuator. The device comprises a radially contractible locking ring having a cylindrical inner surface for gripping the rod when the locking ring is contracted and an outer surface which is axially inclined, means for positively securing the locking ring around the rod in a position axially fixed in at least one direction with respect to the actuator housing, a ring-contracting member around the locking ring and having an inner surface which is axially inclined at the same angle as the outer surface of the locking ring for engaging that surface, and means for applying an axial force to the ring-contracting member in the direction of the inner surface axial inclination to cause the ring-contracting member to slide axially on the locking ring thereby causing the locking ring to contract and grip the rod.
REFERENCES:
patent: 2455439 (1948-12-01), Page
patent: 2755093 (1956-07-01), Peter et al.
patent: 3531216 (1970-09-01), Callahan
patent: 3610285 (1969-12-01), Passaggio
patent: 3643765 (1972-02-01), Hanchen
patent: 3918346 (1975-11-01), Ziegler
patent: 3941141 (1976-03-01), Robert
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