Rotary expansible chamber devices – Combined
Patent
1991-01-23
1993-01-19
Bertsch, Richard A.
Rotary expansible chamber devices
Combined
418196, 417312, 181208, F04C 1500
Patent
active
051802988
ABSTRACT:
A noise-absorbing medium is provided as an insert within the inner volume of the outlet chamber of a displacement-type pump. In an axial-flow displacement pump, this is the chamber into which pumped hydraulic fluid is discharged, for side-ported delivery to piping which serves the end-use actuator or other use component of the involved hydraulic system. The noise-absorbing medium is a preformed body (or bodies) of foamed elastomeric material having a sealed external skin and containing tiny closed cells of entrapped gas at low pressure; the encapsulated gas within the body bears a predetermined fractional volumetric proportion to the overall volume of the body, and the overall volume of the body also bears a predetermined relation to the overall volume of the outlet chamber.
REFERENCES:
patent: 1751703 (1930-03-01), Long
patent: 3033306 (1962-05-01), Hallene et al.
patent: 3134611 (1964-05-01), Iverson
patent: 3385396 (1968-05-01), Morris
patent: 3489242 (1970-01-01), Gladding et al.
patent: 3789954 (1974-02-01), Raleigh
patent: 3918541 (1975-11-01), Krieger
patent: 4135602 (1979-01-01), Clark
patent: 4860851 (1989-08-01), Krevor et al.
patent: 5013221 (1991-05-01), Tuckey
Bertsch Richard A.
Cavanaugh David L.
IMO Industries Inc.
LandOfFree
Hydraulic pump with foamed elastomeric member in outlet chamber does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hydraulic pump with foamed elastomeric member in outlet chamber , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulic pump with foamed elastomeric member in outlet chamber will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-99687