Valves and valve actuation – With means to increase head and seat contact pressure – Spring
Patent
1986-05-09
1989-11-07
Schwadron, Martin P.
Valves and valve actuation
With means to increase head and seat contact pressure
Spring
251309, 251314, F16K 2500, F16K 500
Patent
active
048786527
ABSTRACT:
An improved plug valve wherein a novel shape for the valve plug and valve chamber provide mating surfaces for improved wear characteristics. The novel shape of the valve plug is a frustum of a body of revolution of a curved known as a tractrix, a solid shape otherwise known as a peudosphere.
REFERENCES:
patent: 131799 (1872-10-01), Ureeland et al.
patent: 3038694 (1962-06-01), Dunbeck
patent: 3815870 (1974-06-01), Milleville
Albrecht John M.
Cordell Helen S.
Hightower Judson R.
Schwadron Martin P.
The United States of America as represented by the United States
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