Well jar incorporating elongate resilient vibration snubbers and mounting apparatus therefor
US4498548A · kind A · utility
9Cited by
7References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 20, 1983 |
| Grant date | Feb 12, 1985 |
| Priority date | — |
| Expiry date | Jun 20, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/4973
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
For use in a well jar, a mounting apparatus for resilient elongate snubbers is described. In the preferred and illustrated embodiment, parallel elongate resilient snubbers are formed on metallic backing strips. They are profiled to define sloping elongate sides which slidably fit within undercut grooves. The undercut grooves extend from an encircling shoulder to enable easy insertion into the grooves. The shoulder is adjacent to an encircling narrow neck, thereby enabling an expandable lock ring to be positioned in the neck, securing the resilient snubbers in position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.