Hydraulic pumps

Details Hydraulic pumps Hydraulic pumps

1979-06-05

1981-03-03

Goldstein, Herbert

Rotary expansible chamber devices

With mechanical sealing

Seal on cylinder engaging rotary member separates inlet and...

F04C 208

Patent

active

042538084

ABSTRACT:
A gear pump for use particularly with the new type water hydraulic fluids. A gear track insert is located in the gear housing pressure-generating zone to protect the gear housing from abrasion and high pressure wear. The gear track insert is replaceable, when required, thereby saving the more expensive cost of replacing the gear housing. Isolation seals are of a new design to eliminate high pressure from leaking into the low pressure zone of the pump. These seals also control the pressure plate to gear face load to minimize wear and leakage.

REFERENCES:
patent: 367374 (1887-08-01), Deming
patent: 2622534 (1952-12-01), Johnson
patent: 2809592 (1957-10-01), Miller
patent: 2817297 (1957-12-01), Mosbacher
patent: 2932254 (1960-04-01), Booth
patent: 3174435 (1965-03-01), Sisson et al.
patent: 4065235 (1977-12-01), Furlong
patent: 4090820 (1978-05-01), Teruyama
patent: 4742862 (1956-04-01), Banker
Tyrone Hydraulics Inc. Publication.
Commercial Shearing Inc. Publication 1976.

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