Work support
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 13, 2006
Grant Date -
Dec 23, 2004
app pub date -
Oct 15, 2001
filing date -
Jul 14, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A workpiece support provides enhanced reliability of operation and enhanced durability. The workpiece support comprises a rod, a sleeve body, a case member, a scraper, an external peripheral hydraulic chamber, and oil passages, and is further provided with an air passage formed between the rod and the internal peripheral surface of the sleeve body, and connected to the small gap between the rod and the scraper, and an air input port for supplying compressed air to the air passage; wherein compressed air is supplied from the air input port to the air passage and expelled from the small gap between the rod and the scraper when the rod is retracted.
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