Expansible chamber devices – Relatively movable working members – Moving cylinders
Patent
1989-04-03
1990-11-13
Look, Edward K.
Expansible chamber devices
Relatively movable working members
Moving cylinders
92117R, 92119, F01B 1500
Patent
active
049693891
ABSTRACT:
A plurality of piston heads (14, 16, 18) are spaced apart along the length of a single piston rod (12). A travelling cylinder body (20, 22, 24) is associated with each piston head (14, 16, 18). The traveling cylinder bodies (20, 22, 24) and the piston heads (14, 16, 18) define a first fluid chamber (92, 100, 88) on a common first side of the piston heads (14, 16, 18) and a set of second fluid chambers (96, 104, 90) on a common opposite side of the piston heads (14, 16, 18). A separate fluid supply and return tube (94, 102, 82) is provided for each first fluid chamber (92, 100, 88). The tubes (94, 102, 82) extend through the hollow interior (42) of the piston rod (12). A space exists in the hollow interior (42) between and around the tubes (94, 102, 82). This space serves as a supply and return passageway for all three second fluid chamber (96, 104, 90). Passageways (98, 106, 80) extend from interior space (42) to each of the second fluid chambers (96, 104, 90).
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Barnard Delbert J.
Denion Thomas
Look Edward K.
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