Hydraulic spring compressor
US5954315A · kind A · utility
1Cited by
4References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 2, 1998 |
| Grant date | Sep 21, 1999 |
| Priority date | — |
| Expiry date | Dec 2, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/53622
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A spring-compressor device comprises a body having at least two telescopic parts (1, 4, 7) fitted with respective coupling means (2, 9) for jaws (3, 10), and including means internal to the body for controlling lengthening or shortening thereof. The innermost part (7) of the body is constituted by the body of a single-acting actuator whose rod (11) which is secured to the piston (12) of the actuator is fixed to the outermost part (1) of the body and is provided with a duct (14) for feeding the chamber (13) of the actuator whose increase in volume tends to retract the body of the compressor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.