Furnace roof jack with pivoting flashing plate

Details Furnace roof jack with pivoting flashing plate Furnace roof jack with pivoting flashing plate

1988-07-05

1990-01-16

Yeung, James C.

Stoves and furnaces

Stoves

Heating

126307R, 126314, 285 44, 98 62, F24C 300

Patent

active

048936081

ABSTRACT:
A furnace roof jack is provided with a pivoting flashing plate which can be attached to pitched roofs having various pitch angles. The roof jack includes an elongated generally cylindrical tube. An enlarged portion of the tube has a generally spherical outer surface. A flashing plate is provided with a hole having a diameter approximately the same as the diameter of the spherical surface. The flashing plate is pivotally attached to the tube on an axis which extends perpendicularly to the axis of the tube along a diameter of the spherical surface.

REFERENCES:
patent: 302373 (1884-07-01), Atkin
patent: 460424 (1891-09-01), Bidwell
patent: 644415 (1900-02-01), Folger
patent: 807794 (1905-12-01), Watson
patent: 862415 (1907-08-01), Rohrer
patent: 885318 (1908-04-01), Bullard
patent: 1174763 (1916-03-01), Redlon
patent: 1202687 (1916-10-01), Elkerton
patent: 1270919 (1918-07-01), Berg
patent: 1704942 (1929-03-01), Hopson
patent: 3398671 (1968-08-01), Acosta
patent: 3765317 (1973-10-01), Lowe

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