Thermal pulse type heater and valve therefore

Details Thermal pulse type heater and valve therefore Thermal pulse type heater and valve therefore

1975-12-08

1977-02-22

Nilson, Robert G.

Electric heating

Heating devices

Combined with diverse-type art device

137856, F02N 1704, F16K 1514

Patent

active

040093662

ABSTRACT:
A cylindrical valve body is secured within the body of the heater and includes a venturi inlet to reduce flow restrictions through the valve. A flexible flap valve spans the inner bore of the body at approximately 45.degree. so that it only has to be moved through 45.degree. to be fully opened or fully closed, and secured so that gravity aids in the seating of the flap valve in the closed position. A strip type retainer engages grooves in the side walls of a slot at the top of the body and engages the upper part of the flap valve and holds it in position when the valve assembly is incorporated in the heater and a projecting lug from the valve body engages an aperture in the heater body to position the valve assembly correctly relative to the heater assembly.

REFERENCES:
patent: 182355 (1876-09-01), Campbell
patent: 555588 (1896-03-01), Spencer
patent: 2782777 (1957-02-01), Jasper
patent: 2867213 (1959-01-01), Thomas
patent: 3626148 (1971-12-01), Woytowich
patent: 3628565 (1971-12-01), McWethy

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