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US 4,060,096 AGranted
Ventilator valve
OwnerMax Gunter Schadeinventor
Life of this patent
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OwnerMax Gunter Schadeinventor
Estimating the term…
The ventilator valve of the invention includes a housing incorporating a plate portion having an aperture forming at least part of a passage for air to flow through the housing. This plate portion forms a base adjacent to which a valve plate is rotatably mounted, in a plane substantially parallel thereto. A ring-like member is fixed to said base plate to dispose adjacent the outer periphery of the valve plate. This ring member embodies means defining a plurality of circularly spaced recesses in which a locking element on the valve plate may be selectively engaged. The engagement of the locking element in one of said circularly spaced recesses causes the valve plate to be in a valve-open position, in which position it is clear of at least a portion of the aperture in said plate portion of the housing. The locking element embodies means arranged to respond to a predetermined temperature level of its environment to disable the engaged relation thereof to said ring member, in which event said valve plate is caused to move, under the influence of either of biasing means or gravity, to a valve-closed position in which it seals the aperture in the base plate and thereby closes the flow passage which is normally provided through said housing.
A ventilator valve comprising a housing, means defining a flow passage through said housing at least a portion of which is defined by an aperture in a plate incorporated in said housing, a valve plate mounted for rotation in a plane adjacent to the plane of said plate which includes said aperture, said valve plate having at least one aperture adapted to be selectively positioned with respect to the aperture in said first mentioned plate, means for mounting a locking element in connection with said valve plate, for rotation therewith, means having a relatively fixed relation to said housing including a plurality of arcuately spaced anchoring means adapted to be selectively engaged by the locking element whereby to position a selected portion of said one aperture in said rotatable plate in alignment with a selected portion of the aperture in said first mentioned plate, the locking element mounted in connection with said valve plate and the anchoring means to which it is engaged being arranged to disengage in the presence of a predetermined level of the temperature of their environment, and said rotatable plate being conditioned to move to a position to close said aperture in said first mentioned plate upon a disengagement of the locking element from its anchoring means.
Dependencies are inferred from the claim text.