Expansible chamber devices – With releasable stop or latch means to prevent movement of... – Means includes element interfitting between working member...
Patent
1989-03-14
1991-11-12
Look, Edward K.
Expansible chamber devices
With releasable stop or latch means to prevent movement of...
Means includes element interfitting between working member...
92 27, 92 85B, 92107, 92110, 91 23, 91 44, 91405, F15B 1526
Patent
active
050638289
ABSTRACT:
An actuator including a cylinder having a longitudinal bore, a piston slidably and sealingly inserted into the cylinder, and a lock mechanism for temporarily locking the piston, the cylinder including a cylinder body having the longitudinal bore, a cylinder formed at a front end of the cylinder body and accommodating the lock mechanism, and a front wall connected to the cylinder head at a position opposite to the front end of the cylinder body and having a hole formed therein, the piston including a piston head slidably and sealingly inserted into the cylinder bore, the piston rod projecting from the piston head and slidably insertable into the hole of the front wall, a key groove formed on the piston rod at a position near the piston head, and a longitudinal hole formed within the piston head and the piston rod, wherein the diameter of the piston rod decreases from a backward position adjacent to the key groove to a forward position spaced from the piston head.
REFERENCES:
patent: 2349244 (1944-05-01), Brown
patent: 3023739 (1962-03-01), Dickson, Jr. et al.
patent: 3186305 (1965-06-01), Lorimer
patent: 3251278 (1966-05-01), Royster
patent: 3726187 (1973-04-01), Lewis
patent: 4033235 (1977-07-01), Berg
Look Edward K.
Teijin Seiki Co. Ltd.
Verdier Christopher M.
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