Well casing spider

Details Well casing spider Well casing spider

1979-01-04

1981-06-30

Grosz, Alexander

Buckles, buttons, clasps, etc.

Strap-end-attaching devices

Buckle connected

294102A, A44B 2100, E21B 1907

Patent

active

042754879

ABSTRACT:
A tapered, hollow bowl of a well spider fitted to an elongated base member and supporting a circumferential array of well casing gripping slips mounted within the bowl for vertical movement to radially enlarge and contract a circular hole within the center of the slip receiving the well casing is segmented to include a pivotable door which carries at least one of the slips, the door being locked in closed position, but pivoted to open the side of the bowl to permit lateral entry of the well casing through the open door.

REFERENCES:
patent: 1693478 (1928-04-01), Davis
patent: 1836096 (1931-12-01), Hoffoss et al.
patent: 1928283 (1933-08-01), Stokes
patent: 2274273 (1942-02-01), Miller
patent: 2890513 (1959-06-01), Lane
patent: 3675278 (1972-07-01), Powell
patent: 4035012 (1977-07-01), Gvier

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