Expansible chamber devices – Mutually relatively movable cylinder or sleeve – member... – With additional cylinder relatively slidable exteriorly of...
Patent
1993-06-28
1994-08-30
Look, Edward K.
Expansible chamber devices
Mutually relatively movable cylinder or sleeve, member...
With additional cylinder relatively slidable exteriorly of...
91 1, F01B 720
Patent
active
053417240
ABSTRACT:
A telescoping cylinder has a cylindrical housing (A) carrying a first stage including a central piston (B) opening into a hollow piston rod (C) and at least one succeeding stage including a concentric piston (E) and piston rod (F) having a hollow interior containing the central piston and piston rod with an air opening (H) in the concentric piston rod opening into an air outlet (G) at an exit end of the cylindrical wall. By applying compressed air to the central piston, the first stage is extended initiating movement of the concentric piston and piston rod with extension of the concentric piston and piston rod thereafter followed by extension of any succeeding stage. By applying compressed air to the outlet (G) the concentric piston (E) and piston rod (F) is retracted initiating movement of the central piston and piston rod when the air opening (H) in concentric piston rod (F) is aligned with port (G).
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Look Edward K.
Nguyen Hoang
Speigel H. Jay
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