Adjustable jack for mounting on a duct bend

Details Adjustable jack for mounting on a duct bend Adjustable jack for mounting on a duct bend

1987-05-15

1988-11-01

Reese, Randolph A.

Pipe joints or couplings

Roof or floor drain flashing type

Angled

285 42, 285155, 285424, 98 391, F24F 1302

Patent

active

047814012

ABSTRACT:
The invention comprises an economical, adjustable duct section which allows an installer to mount and connect a curved end thereof to an opening in an air duct bend and to adjust the other end to a desired predetermined angle with respect to the horizontal. The invention makes it more feasible to install a second air handler on an outlet duct bend of a first air handler for augmenting an output of the first air handler on the roof of a building or the like. It provides an easily made water and weather tight seal between the assembled units.

REFERENCES:
patent: 559305 (1896-04-01), Nies
patent: 1370199 (1921-03-01), Downs
patent: 1704942 (1929-03-01), Hopson
patent: 1804954 (1931-05-01), Rutherford
patent: 1908821 (1933-05-01), Cornell, Jr.
patent: 2216864 (1940-10-01), Wasmund
patent: 2736949 (1956-03-01), Kraemer
patent: 3742659 (1973-07-01), Drew
patent: 4526091 (1985-07-01), Sharp

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