Gasketless air damper

Details Gasketless air damper Gasketless air damper

1989-07-18

1990-04-17

Rosenthal, Arnold

Valves and valve actuation

Electrically actuated valve

Rotary electric actuator

251248, 251283, 251305, F16K 3104, F16K 122

Patent

active

049173502

ABSTRACT:
A gasketless air damper includes a cylindrical sleeve having an inwardly protruding integral seal ridge. A circular blade damper disposed for rotation in the sleeve has integral oppositely oriented edge seals that aerodynamically interact with airflow through the damper and which, in a closed position, provide for a tight gasketless seal between the damper blade and the seal ridge integrally formed in the damper sleeve.

REFERENCES:
patent: 2945667 (1960-07-01), Bibbo et al.
patent: 4246918 (1981-01-01), Dean
patent: 4266753 (1981-05-01), Okada
patent: 4301833 (1981-11-01), Donald, III
patent: 4401260 (1983-08-01), Grant
patent: 4469305 (1984-09-01), Baumann
patent: 4646964 (1987-03-01), Parker et al.
patent: 4840114 (1989-06-01), Bauer et al.
patent: 4840349 (1989-06-01), Peter et al.
Contracting Business/Apr. 1989, by Jim Wheeler, Trane Introduces Varitrac.RTM..

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