Gate valve having a swingable-slidable valve plate

Details Gate valve having a swingable-slidable valve plate Gate valve having a swingable-slidable valve plate

1998-02-02

1999-05-04

Walton, George L.

Valves and valve actuation

Mechanical movement actuator

Plural dissimilar mechanical movements

251279, 251302, 251327, F16K 302

Patent

active

058994386

ABSTRACT:
A gate valve has a manual actuator that includes a crank having a direct pivotal connection with a slidable valve plate. The valve plate has a teardrop configuration that enables the valve plate to swing around the pivot connection as the plate slides along guide slot edge surfaces, between a closed position and an open position. Only a relatively small manual force is required to operate the valve.

REFERENCES:
patent: 2701117 (1955-02-01), Bashark
patent: 3237916 (1966-03-01), Bryant
patent: 3249117 (1966-05-01), Edwarde
patent: 3788346 (1974-01-01), Fitzgerald
patent: 4875504 (1989-10-01), Nicholson
patent: 5439198 (1995-08-01), Reed
patent: 5445190 (1995-08-01), Gunder

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