Cylinder, load port using it, and production system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 27, 2008
Grant Date -
N/A
app pub date -
May 2, 2000
filing date -
Mar 3, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A cylinder which can precisely feed a piston rod 3 into three different positions. The cylinder includes a spring receiving member 14 which is placed coaxially with the piston rod in a piston room. Movement of the piston 4 is limited by one end of the piston room and a stopper 8 formed on the piston rod which prevents the piston from moving in the opposite direction. A first spring member 15 is disposed in the cylinder tube 2 to separate the spring receiving member from the piston. A hollow 9 is formed on the periphery of the piston rod at a further position from the piston than the stopper and a stop pin 11 in the cylinder tube 2 which is biased in the direction of the hollow by a second spring member 12 engages with the hollow. A load port utilizes the cylinder for a production system.
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