Cylindrical working member and system employing same
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United States of America Patent
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-
Aug 10, 1999
Grant Date -
N/A
app pub date -
Jan 30, 1998
filing date -
Jan 30, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An improved cylindrical working member and associated system comprising a simple cylindrical sleeve having an outer surface with two spaced grooves surrounding a cylindrical land. At the other end, a single groove is formed. A 'SANDWICH' consisting of a simple O-ring, a single back-up ring, a low snap ring is installed in each groove. An additional low friction snap ring forms a limit stop front cap. A plurality of the cylindrical sleeves can be employed to form a telescoping cylinder system. An additional embodiment using a guide member consisting of a plurality of square tubes of sequentially increasing cross-section formed into a non-rotating telescoping guide member to attach one end to the telescoping system, and other end to a plug of the hollow central rod. A simple system is used for extending and retracting the telescoping cylinder.
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