Castellated valve wrench

Details Castellated valve wrench Castellated valve wrench

1990-12-11

1993-04-20

Smith, James G.

Tools

Wrench, screwdriver, or driver therefor

Handle clutched to head

811242, 8117615, B25B 1346

Patent

active

052032400

ABSTRACT:
An apparatus for engaging and rotating large and/or difficult to turn handwheels of valves includes a castellated drive member and separable ratchet drive assembly. The drive member includes a plurality of T-shaped slots which receive and retain the spokes of a valve wheel. The drive member also includes a multi-sided stub defining a through, axial passageway. The stub is removably received within a complementarily configured passageway in a collar of the ratchet drive assembly. The collar, in turn, is received within a housing and is acted upon by a pawl. An elongate handle extends radially from the housing and facilitates the application of significant torque to the apparatus and an associated valve handwheel.

REFERENCES:
patent: 2004639 (1935-06-01), Thewes
patent: 2619861 (1952-12-01), Wanamaker
patent: 3010346 (1961-11-01), Kulp
patent: 3274864 (1966-09-01), Chapman
patent: 4817475 (1989-04-01), Kelly et al.

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