Automatic HVAC housing valve door with tolerance compensating re

Details Automatic HVAC housing valve door with tolerance compensating re Automatic HVAC housing valve door with tolerance compensating re

1998-02-26

1999-08-17

Chambers, A. Michael

Fluid handling

With casing, support, protector or static constructional...

Vehicle

251 62, 251228, 251303, F16K 3146, F16K 31524

Patent

active

059378913

ABSTRACT:
A valve flapper door return spring mechanism for an automotive HVAC housing is modified so as to compensate for tolerance variations, so that the door is held in a substantially rattle free return position regardless. One of a pair of resilient spring fingers sits in a V shaped notch created by the intersection of a pair of spring finger stop surfaces that are opposed in slope. The one spring finger can therefore continually seat itself into an equilibrium position at the bottom of the V, and always make solid contact.

REFERENCES:
patent: 3481361 (1969-12-01), Brewer et al.
patent: 4717121 (1988-01-01), Hashimoto
patent: 5430511 (1995-07-01), Paff et al.
patent: 5626516 (1997-05-01), Peterson

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