Inlet port opening for a roots-type blower

Details Inlet port opening for a roots-type blower Inlet port opening for a roots-type blower

1990-05-25

1992-01-07

Vrablik, John J.

Rotary expansible chamber devices

Interengaging rotating members

Helical or herringbone

418206, F04C 1816

Patent

active

050785834

ABSTRACT:
A rotary positive displacement blower (10) of the Roots-type includes an improved inlet port opening (28 or 100, or 150) and an inlet duct (30) and a bypass duct (31) formed in an unitary housing member (14).

REFERENCES:
patent: 2287716 (1942-06-01), Whitfield
patent: 2457314 (1948-12-01), Lysholm
patent: 2480818 (1949-08-01), Whitfield
patent: 2654530 (1953-10-01), Oldberg
patent: 3073514 (1963-01-01), Bailey et al.
patent: 3283996 (1966-11-01), Schibbye
patent: 4595349 (1986-06-01), Preston et al.
patent: 4684335 (1987-08-01), Goodridge
patent: 4768934 (1988-09-01), Soeters
patent: 4828467 (1989-05-01), Brown
patent: 4844044 (1989-07-01), McGovern
SAE Technical Paper Series No. 870355 entitled "Development of the Eaton Supercharger" by Loren H. Uthoff and John W. Yakimow, Feb. 1987.

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