Composite blade for dampers for ducts of large cross sectional a

Details Composite blade for dampers for ducts of large cross sectional a Composite blade for dampers for ducts of large cross sectional a

1985-03-04

1986-04-15

Rosenthal, Arnold

Valves and valve actuation

Reciprocating valve

Gate

251368, 251250, 405106, 138 943, F16K 3312, F16K 3314

Patent

active

045822964

ABSTRACT:
A damper for ducts of large cross sectional areas has an upstream seat surrounding the flow path and a blade which consists of upstream and downstream skins of a high quality nickel allow steel and an internal reinforcement. The thickness of the skins is such that, given the size and shape of the seat, they are relatively flexible. The skins are welded to opposite sides of the reinforcement which is in the form of a grid or lattice of substantially the size and shape of the seat and both renders the skins rigid and establishes the wanted blade thickness. Members marginally of the grid and welded thereto are exposed to be operatively engaged by the mechanism by which the blade is reciprocated between positions permitting or blocking flow through the damper.

REFERENCES:
patent: 713622 (1902-11-01), Enyart
patent: 1483041 (1924-02-01), Brooks
patent: 2208394 (1940-07-01), Scherer
patent: 3996750 (1976-12-01), Brcar

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