Magnetic latch for exhaust vent

Details Magnetic latch for exhaust vent Magnetic latch for exhaust vent

1996-11-13

1998-02-10

Joyce, Harold

Ventilation

Having outlet airway

Having readliy movable air regulating louver, damper, or cover

1375278, 454904, F24F 1310

Patent

active

057162719

ABSTRACT:
A latch for use with a valve on the end of an exhaust vent typically associated with a clothes dryer or the like. The latch includes a flat, plastic bonded magnet having a layer of pressure sensitive adhesive (PSA) for bonding the magnet to one of either the hinged valve plate or stationary face plate of the valve while a strike plate formed of a conformable, magnetically susceptible material is bonded by a PSA layer to an opposing section of the other of the valve plate or face plate. The latch is kept closed by magnetic forces in the absence of blower expelled air, regardless of variations in pressure on the valve plate, such as may result from gusts of wind.

REFERENCES:
patent: 2739521 (1956-03-01), Spear
patent: 3250206 (1966-05-01), Strouth
patent: 3541945 (1970-11-01), Wexler

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