Pumps – Expansible chamber type – Having pulsation dampening fluid receiving space
Patent
1997-08-29
2000-05-16
Freay, Charles G.
Pumps
Expansible chamber type
Having pulsation dampening fluid receiving space
417543, F04B 1100
Patent
active
060628308
ABSTRACT:
A diaphragm type damper has a combined member, which is formed by welding a marginal portion of a diaphragm to a half body having a concave portion formed therein, and is fixed to a pressure chamber portion to which high pressure fluid is introduced. A wall thickness of a welding portion of the half body is not relevant to welding, and the heat capacity of the welding portion is small. Since the half body is allowed to have a large wall thickness, leakage from the welding portion and damage to that portion can be prevented. In addition, the diaphragm type damper of this present invention can be easily assembled, since it requires only fixing the combined member to the pressure chamber portion.
REFERENCES:
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patent: 5129427 (1992-07-01), White et al.
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patent: 5353840 (1994-10-01), Paley et al.
patent: 5794594 (1998-08-01), Fehlmann
Aoki Nobuo
Hozumi Etsurou
Kikuchi Hideya
Minegishi Akinao
Freay Charles G.
Tyler Cheryl J.
Zexel Corporation
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