Rotary piston pump with pressure equalization chambers for the s

Details Rotary piston pump with pressure equalization chambers for the s Rotary piston pump with pressure equalization chambers for the s

1981-12-17

1984-08-14

Vrablik, John J.

Rotary expansible chamber devices

With signal, indicator or transparent inspection means

418 95, 418104, 418206, 418DIG1, 277226, F04C 1818, F04C 2700, F04C 2900, F16J 1540

Patent

active

044654421

ABSTRACT:
A rotary piston pump includes a casing and partitions within the casing defining an expansion chamber and with a gear and bearing chamber on one side of the expansion chamber and a bearing chamber on the other side. The partitions between the expansion chamber and the bearing and gear and bearing chambers are provided with passages for receiving shafts serving for the transmission of the rotary movement from gears to the pistons of the pumps. The passages between the chambers are provided with split seals which are composed of two parts separated by a pressure equalization chamber.

REFERENCES:
patent: 1696882 (1928-12-01), Hassler
patent: 2115325 (1938-04-01), Behringer
patent: 2495601 (1950-01-01), Rawson
patent: 2496676 (1950-02-01), Rawson
patent: 2642808 (1953-06-01), Thomas
patent: 2785851 (1957-03-01), Menon
patent: 2903970 (1959-09-01), Elovitz et al.
patent: 3292847 (1966-12-01), Herrick
patent: 3919854 (1975-11-01), Denis

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