Shock absorbing assembly
US5476421A · kind A · utility
13Cited by
33References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 21, 1993 |
| Grant date | Dec 19, 1995 |
| Priority date | — |
| Expiry date | Jun 21, 2013 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D3/76
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A shock absorbing assembly for a drilling machine utilizing a down hole hammer having a driver member for receiving input forces, a driven member for transmitting forces from the driver member to an attached drill string, and a resilient member which is placed under tension and elongated when downward forces are applied. The resilient member under tension receives and dissipates shocks and vibrations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.