Expansible chamber devices – With releasable stop or latch means to prevent movement of... – Means includes element interfitting between working member...
Patent
1984-12-19
1986-10-28
Garrett, Robert E.
Expansible chamber devices
With releasable stop or latch means to prevent movement of...
Means includes element interfitting between working member...
92 27, F15B 1526
Patent
active
046191887
ABSTRACT:
A pneumatic cylinder device with a locking mechanism has a pneumatic cylinder constituted by a cylinder, a piston slidably received in the cylinder and a piston rod extended from the piston outwardly of the cylinder, and a locking mechanism connected to the pneumatic cylinder and adapted to selectively lock the piston rod against movement. The locking mechanism comprises a housing through which the piston rod is slidably extended; a flexible tubular member disposed in the housing so as to surround the piston rod, the flexible tubular member being contractable and expandable radially; and annular pressure chamber formed around the flexible tubular member and having a variable volume; a volume changing means for causing a change in the volume of the pressure chamber; and a pressure transmission medium accommodated in the pressure chamber and adapted to transmit a pressure change, produced in the pressure chamber as a result of a volume change, to the flexible tubular member.
REFERENCES:
patent: 1650013 (1927-11-01), Gartin
patent: 2394785 (1946-02-01), Kindervater
patent: 3203513 (1965-08-01), Allen
patent: 4103280 (1978-07-01), Cholet et al.
patent: 4185539 (1980-01-01), Stratienko
Garrett Robert E.
Nippon Joucomatic Co., Ltd.
Williamson Mark A.
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