Rotary kinetic fluid motors or pumps – Working fluid passage or distributing means associated with... – Pump outlet or casing portion expands in downstream direction
Reexamination Certificate
2005-06-07
2005-06-07
Look, Edward K. (Department: 3745)
Rotary kinetic fluid motors or pumps
Working fluid passage or distributing means associated with...
Pump outlet or casing portion expands in downstream direction
C415S212100, C415S213100, C415S214100
Reexamination Certificate
active
06902373
ABSTRACT:
An exhaust adapter for use with a draft inducer having a blower housing with a rectangular blower outlet. The exhaust adapter provides a transition from the rectangular outlet of the blower housing and a round exhaust pipe. The exhaust adapter includes a transition section extending between an attachment flange and a round exhaust outlet. The exhaust adapter thus facilitates attachment of the blower housing to a round exhaust pipe. The exhaust adapter is formed from two sections of stamped metal joined to each other along a top and a bottom seam. The two sections of stamped metal allow the exhaust adapter to be formed using inexpensive materials and an inexpensive manufacturing process.
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Drawing specification “Exhaust Adapter”, Drawing No. 8501 4019, Fasco Industries, Inc., admitted prior art.
Drawing specification “Exhaust Adapter”, Drawing No. 8637 4070, Fasco Industries, Inc., admitted prior art.
Drawing specification “Blower Assembly”, Part No. 7021 10046, Fasco Industries, Inc., admitted prior art.
Drawing specification “Blower Assembly”, Part No. 7002 2941, Fasco Industries, Inc., admitted prior art.
Andrus Sceales Starke & Sawall LLP
Fasco Industries, Inc.
Look Edward K.
White Dwayne
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