External axial rotary piston blower with noise suppressing trans

Details External axial rotary piston blower with noise suppressing trans External axial rotary piston blower with noise suppressing trans

1987-06-10

1988-11-01

Vrablik, John J.

Pumps

With muffler acting on pump fluid

418180, 418181, 418206, F04B 3900, F04C 1818, F04C 2906

Patent

active

047815418

ABSTRACT:
An external axial rotary piston blower for quarter-roller type of construction with transfer ports leading to the outlet in the casing runway surfacing or inner peripheral surface of the housing with length differing relative to each other and increasing cross section differing toward the outlet, the greatest length of which can be permitted to be dimensioned or measured only such that the transfer ports are first opened when the inlet is closed-off by the piston traversing the same.

REFERENCES:
patent: Re29627 (1978-05-01), Weatherston
patent: 3204564 (1965-09-01), Eltze
patent: 3667874 (1972-06-01), Weatherston
patent: 3844695 (1974-10-01), Weatherston
patent: 4215977 (1980-08-01), Weatherston
Ohtani & Iwamoto, "Reduction of Noise in Roots Blower", Bulletin of the JSME, vol. 24, No. 189, Mar. 1981.

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