Jar accelerator

Details Jar accelerator Jar accelerator

1988-07-11

1989-07-04

Kisliuk, Bruce M.

Wells

With jar means for releasing stuck part

175299, 175302, E21B 406, E21B 31107

Patent

active

048441570

ABSTRACT:
A jar accelerator including an elongated tubular tool body and an elongated mandrel axially slidingly mounted within the tool body and having an outwardly facing shoulder. A composite plurality of frusto-conical disc springs are disposed inside the tool body about the mandrel and between the shoulders to provide a preselected accelerating function.

REFERENCES:
patent: 2122751 (1938-07-01), Phipps
patent: 2144869 (1939-01-01), Boulter
patent: 2417715 (1947-03-01), Stewart
patent: 2882018 (1959-04-01), Andrew
patent: 3406770 (1968-10-01), Arterbury et al.
patent: 3472326 (1969-10-01), Sutliff et al.
patent: 3539026 (1970-11-01), Sutliff et al.
patent: 3735828 (1973-05-01), Berryman
patent: 3873079 (1975-03-01), Kuus
patent: 4333542 (1982-06-01), Taylor

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