Flap for air flow control in vehicle heating and cooling systems

Details Flap for air flow control in vehicle heating and cooling systems Flap for air flow control in vehicle heating and cooling systems

1982-07-19

1985-01-08

Chambers, A. Michael

Valves and valve actuation

Valve

251306, F16K 122

Patent

active

044923619

ABSTRACT:
A flap (11) for controlling the flow of air in a duct, in particular in a heater or air conditioner installation for the cabin of a motor vehicle, comprises an assembly of two half-flaps (12) applied against each other and each having projecting hollow stiffener ribs (13) disposed substantially opposite to one another, to constitute a hollow box structure. A sealing ring (17) is moulded over touching peripheral rims (16) of the half-flaps. For given stiffness, this structure may four or five times lighter than a conventional sheet metal flap, thereby reducing the force needed to actuate the flap.

REFERENCES:
patent: 3275031 (1966-09-01), Alyea et al.
patent: 3495521 (1970-02-01), Foster
patent: 3547152 (1970-12-01), Hess
patent: 3572632 (1971-03-01), Bengtsson
patent: 3635245 (1972-06-01), Canfield
patent: 3749115 (1973-07-01), Raftis
patent: 3885347 (1975-05-01), Adachi et al.

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