Vacuum motor fan cover

Details Vacuum motor fan cover Vacuum motor fan cover

1983-02-10

1989-02-28

Smith, Leonard E.

Pumps

Motor driven

Electric or magnetic motor

41742314, 415119, 415211, F04B 3714, F04B 3912

Patent

active

048080900

ABSTRACT:
A fan cover for a bypass vacuum motor unit is produced by forming outlet apertures in an intermediate flat blank and thereafter deforming the blank into a pan-shaped structure with the outlet apertures disposed on its cylindrical sidewall. The fan cover affords economies in tooling for its manufacture, uniformity in performance, and reduced noise in operation.

REFERENCES:
patent: 1708197 (1929-04-01), Xippas
patent: 1712698 (1929-05-01), Ginder
patent: 2041516 (1936-05-01), Rudd
patent: 2148254 (1939-02-01), Bergstrom
patent: 2183079 (1939-12-01), Kropp
patent: 2609596 (1952-09-01), Clark
patent: 3730642 (1973-05-01), Barnstead et al.
patent: 4325149 (1982-04-01), Moreland

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