Well jar incorporating elongate resilient vibration snubbers and

Details Well jar incorporating elongate resilient vibration snubbers and Well jar incorporating elongate resilient vibration snubbers and

1983-06-20

1985-02-12

Novosad, Stephen J.

Boring or penetrating the earth

Below-ground impact members

Resiliently biased

175321, 166178, 2940208, 464 20, 308 4A, E21B 31107

Patent

active

044985487

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.

REFERENCES:
patent: 2023266 (1935-12-01), Davis
patent: 3115696 (1963-12-01), Evans
patent: 3208541 (1965-09-01), Lawrence
patent: 3225844 (1965-12-01), Roberts
patent: 3233690 (1966-02-01), Lawrence
patent: 4064730 (1977-12-01), Gerretz
patent: 4394883 (1983-07-01), Briscoe

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