Cylinder, load port using it, and production system
US7377736B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | May 2, 2000 |
| Grant date | May 27, 2008 |
| Priority date | — |
| Expiry date | Jan 16, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S414/135
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.