Expansible chamber devices – With inspection window in expansible chamber wall portion – With lock
Patent
1987-03-02
1988-12-20
Hershkovitz, Abraham
Expansible chamber devices
With inspection window in expansible chamber wall portion
With lock
92 52, 92108, 92151, F01B 2526
Patent
active
047918543
ABSTRACT:
A hydraulic piston and cylinder arrangement retains the outer surface of a sleeve forming the piston in dry condition. The cylinder provides an outer wall and an inner stem with the sleeve sliding inwardly of the outer wall and outwardly of the stem. A head on the end of the stem cooperates with the inner surface of the sleeve. A bearing member on the end of the sleeve remote from the head cooperates with the outer surface of the stem. A first chamber is thus defined between the head and a closure cap on the sleeve to provide an expansion chamber. An annular chamber between the outer surface of the stem and the inner surface of the sleeve and closed by the bearing member provides a return chamber. Two fluid channels coaxially arranged within the stem provide the communication of fluid to the chambers.
REFERENCES:
patent: 3726184 (1973-04-01), Saits
patent: 3858485 (1975-01-01), Rosaen
patent: 4202514 (1980-05-01), Chen
patent: 4207565 (1980-06-01), Isakson
patent: 4242947 (1981-01-01), Renner
patent: 4409884 (1983-10-01), Boehringer
patent: 4608912 (1986-09-01), Navarette
Ade Stanley G.
Battison Adrian D.
Hershkovitz Abraham
Thrift Murray E.
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