Motors: expansible chamber type – Single chamber formed by mutually relatively movable...
Reexamination Certificate
2005-02-08
2005-02-08
Lazo, Thomas E. (Department: 3745)
Motors: expansible chamber type
Single chamber formed by mutually relatively movable...
C092S053000
Reexamination Certificate
active
06851349
ABSTRACT:
A telescopic cylinder comprised of an outer cylinder, a plurality of decreasing diameter piston/sleeve assemblies concentrically mounted in the outer cylinder for reciprocal axial movement relative thereto, and a plunger assembly concentrically mounted within the innermost one of the piston/sleeve assemblies for reciprocal axial movement relative thereto. The piston/sleeve and plunger assemblies having a piston with at least one lateral hole and at least one lateral passage, respectively, extending into its interior, and in fluid communication with a passage in the outer cylinder for receiving pressurized fluid. Each lateral hole having an orifice surface located at the radially outermost portion of the hole and having a diametral dimension no smaller than the maximum diametral dimension of the hole. Each piston further having at least one longitudinally relieved portion located on its outer circumferential surface extending from a first end towards a second end.
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Copy of International Search Report from corresponding International Application PCT/US 03/ 06904.
Mobile Cylinders, Product Information, Quick Reference Data & Application Guide, Catalog HY18-0001/US, Copyright 2001, C9804.
Lazo Thomas E.
Parker-Hannifin Corporation
Pophal Joseph J.
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