Top locking plug valve

Details Top locking plug valve Top locking plug valve

1986-07-24

1988-01-05

Wolfe, Robert L.

Locks

Special application

For control and machine elements

70185, B60R 2502

Patent

active

047167475

ABSTRACT:
A rotary plug valve has a body providing a seat for a rotatable valve member which has an operator surrounded by a portion of the body and which may be rendered inaccessable by a cover closing the surrounding portion of the body and lockable to the valve member.

REFERENCES:
patent: 576956 (1897-02-01), Doyle
patent: 753349 (1904-03-01), Bacon
patent: 1026725 (1912-05-01), Ulmer
patent: 1541216 (1924-05-01), Hendricks
patent: 1903190 (1933-03-01), Neldner
patent: 1970463 (1934-01-01), Mann
patent: 2059085 (1936-02-01), Buck
patent: 2092572 (1937-09-01), Deane
patent: 3782146 (1974-01-01), Franke
patent: 4024740 (1977-05-01), Di Giovanni
patent: 4217925 (1980-08-01), Clark
patent: 4362035 (1982-12-01), Vitale
patent: 4402339 (1983-09-01), Owens
patent: 4458510 (1984-07-01), Nielsen
patent: 4465092 (1984-08-01), Vitale
patent: 4483366 (1984-11-01), Labita

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