Shock absorber assembly
US4331006A · kind A · utility
12Cited by
24References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 1, 1980 |
| Grant date | May 25, 1982 |
| Priority date | — |
| Expiry date | Jul 1, 2000 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B17/07
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A shock absorber assembly for absorbing shocks encountered by a drill string having a working fluid flowing therethrough wherein the shock absorber assembly includes a housing affixed to the drill string, a mandrel mounted for reciprocal longitudinal movement with respect to the housing, and a fluid dampening member replaceably sandwiched between the mandrel and housing for absorbing shocks transmitted between the mandrel and the housing during drilling operations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.