Frictionless hydraulic damper and damper-snubber
US6216831A · kind A · utility
21Cited by
6References
31Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 17, 1999 |
| Grant date | Apr 17, 2001 |
| Priority date | — |
| Expiry date | Jun 17, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F9/362
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A damper including a cylinder, opposite end walls in the cylinder, an elongated shaft mounted for axial movement in seals in the end walls, a piston head on the shaft between the end walls, fluid-tight bellows mounted in sealed relationship between the shaft and the end walls, fluid in the cylinder and in the bellows, and flexible washers mounted between the shaft and the end walls for maintaining the shaft centered in the seals. The damper can function as a snubber when it utilizes a valved piston head.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.