Rotary pumping apparatus with radial seal assemblies on piston

Details Rotary pumping apparatus with radial seal assemblies on piston Rotary pumping apparatus with radial seal assemblies on piston

1986-02-18

1987-09-08

Vrablik, John J.

Rotary expansible chamber devices

Working member has planetary or planetating movement

Plural working members or chambers

418137, 418138, 418146, 418148, 418151, 418264, F04C 18344, F04C 2700, F04C 2900

Patent

active

046921044

ABSTRACT:
An air pump and compressor having a housing with a cylindrical internal chamber. A plurality of pairs of intake and exhaust valves mounted on the housing control the flow of air into and out of the chamber. A piston located within the chamber is mounted on a shaft rotated on the housing. The shaft has a primary eccentric that supports the piston in the chamber. A pair of secondary eccentrics spaced from the primary eccentric are mounted on the piston and housing to control the orbital movement of the piston. Seal assemblies slidably mounted in slots in the piston engage the inner cylindrical wall of the housing to form separate pumping chambers. Each pumping chamber is in communication with an intake valve and an exhaust valve so that on orbital movement of the piston the air flows into and is pumped out of each pumping chamber.

REFERENCES:
patent: 379213 (1903-02-01), Tew
patent: 732671 (1903-06-01), Andrews
patent: 2345561 (1944-04-01), Allen, Jr.
patent: 2423507 (1947-07-01), Lawton
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patent: 3221664 (1965-12-01), Jernaes
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patent: 3787150 (1974-01-01), Sarich
patent: 3938916 (1976-02-01), Sarich
patent: 4079083 (1978-03-01), Sarich
patent: 4219315 (1980-08-01), Sarich
patent: 4253806 (1981-03-01), D'Amato

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