Safety centering basket

Details Safety centering basket Safety centering basket

1979-03-05

1980-06-10

Novosad, Stephen J.

Wells

Guide for device or conduit

On sucker or pump rod

267164, E21B 1710

Patent

active

042068088

ABSTRACT:
A safety centering basket for the tubing of bores in mining, oilfield work and the like is of the kind having a number of resilient flat steel springs secured at their ends in respective end rings each having two half shells coupled by hinges, the improvement being that each flat steel spring is formed by a plurality of spring rods coupled together to form a unit, the pack of rods being clad in a layer of a heat stable protective material such as a plastics material.

REFERENCES:
patent: 2738019 (1956-03-01), Atkinson
patent: 2898136 (1959-08-01), Hall, Sr. et al.
patent: 3000444 (1961-09-01), Wright et al.
patent: 4042022 (1977-08-01), Wills et al.
patent: 4077470 (1978-03-01), Dane

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