Title:
【発明の名称】ダイアフラムポンプ用の、漏れ排出部を備えた多層ダイアフラム
Document Type and Number:
Japanese Patent JP3133067
Kind Code:
B2
Abstract:
A multi-layered diaphragm with leakage offtake for diaphragm pumps, in particular hydraulic pumps, has at least two superposed individual diaphragms (1, 2) fixed to a rotating clamping site. A space (10) is located between adjacent individual diaphragms (1, 2). At least one space (10) contains at least one fold-free and force-free layer (9) made of a nonwoven, knitted, or woven hard-filament fabric which follows the deformation of the individual diaphragms. When under pressure, this layer (9) is also permeable to liquid. The space (10) containing this (these) layer(s) is connected, in the region of the clamping site, to a leakage offtake (12, 13) surrounded by a housing. The layer (9) can, however, also consist of a fibre reinforcement consisting of a nonwoven, knitted, or woven hard-filament fabric which projects from the diaphragm surface facing the adjacent individual diaphragm. A combination of these types of layers is also possible.
Inventors:
Mainz Hans Villi
Application Number:
JP50895392A
Publication Date:
February 05, 2001
Filing Date:
May 04, 1992
Export Citation:
Assignee:
Regipur Polyurethane Anragen Tehinik Gezer Shaft Mitt Beschlenktel Haftung
International Classes:
F04B43/00; F04B43/02; (IPC1-7): F04B43/02
Domestic Patent References:
| JP3206378A | ||||
| JP4934001A | ||||
| JP1200078A | ||||
| JP494806A | ||||
| JP5369805U |
Other References:
【文献】特許113002(JP,C2)
【文献】西独国特許出願公開2620228(DE,A1)
【文献】西独国特許出願公開3522711(DE,A1)
【文献】西独国特許出願公開2620228(DE,A1)
【文献】西独国特許出願公開3522711(DE,A1)
Attorney, Agent or Firm:
Takehisa Ito (1 outside)
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