Hydraulically balanced vane cell pump

Details Hydraulically balanced vane cell pump Hydraulically balanced vane cell pump

1997-01-13

1998-08-18

Thorpe, Timothy

Rotary expansible chamber devices

With mechanical sealing

Axially movable end wall or end wall portion

418259, F04C 1500

Patent

active

057951420

ABSTRACT:
The invention relates to a vane cell pump with a control plate (8) and an end plate (6), between which a pump package (1) is located. The control plate (8) and the end plate (6) have suction and compression chambers (12, 12A and 13, 13A, respectively) opposite one another. While the control plate (8) controls the inflow and outflow of oil, the end plate (6) has a function of guiding the oil. According to the invention, the control edges (15, 15A, 16, 16A, 17, 17A, 18, 18A) on the end plate (6) are recessed relative to the control edges of the control plate (8). This provision enables more-economical manufacture.

REFERENCES:
patent: 2766700 (1956-10-01), Klessig
patent: 4408964 (1983-10-01), Mochizuki et al.
patent: 5112199 (1992-05-01), Otaki et al.

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