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Title:
PULSATION ABSORBING MECHANISM
Document Type and Number:
Japanese Patent JP2009091960
Kind Code:
A
Abstract:

To materialize simplification, miniaturization, low cost, effective pulsation absorption, and a long lifetime.

A pulsation absorbing mechanism 1 is for absorbing pulsation of carried liquid, and is provided with an elastic film 2 directly touching the liquid and absorbing pulsation by contraction and an outside elastic film 3 covering an outside of the elastic film 2. Thereby, the elastic film 2 directly touching the carried liquid contracts and absorbs pulsation and the outside elastic film 3 covering the elastic film 2 suppresses contraction of the elastic film 2. Pulsation is effectively absorbed by the elastic film 2 and a long lifetime can be achieved by suppression of contraction of the elastic film 2 by the outside elastic film 3 while materializing simplification, miniaturization and low cost by using the elastic films 2, 3 in such a manner. Liquid is prevented from leaking to an outside by the outside elastic film 3 disposed at the outside of the elastic film 2 even if the elastic film 2 breaks.


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Inventors:
Aoyama, Ryohei
Isayama, Kazuhiro
Application Number:
JP2007000262481
Publication Date:
April 30, 2009
Filing Date:
October 05, 2007
Export Citation:
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Assignee:
MARUYAMA MFG CO LTD
International Classes:
F04B11/00
Attorney, Agent or Firm:
長谷川 芳樹
黒木 義樹