Title:
ACCUMULATOR HAVING DIAPHRAGM OR BLADDER WITH METALIZED BARRIER FILM
Document Type and Number:
Japanese Patent JP2021008957
Kind Code:
A
Abstract:
To effectively slow the permeation of a gas such as nitrogen through a diaphragm or bladder.SOLUTION: A diaphragm 18 and a bladder for an accumulator each include a thermoplastic film formed in a dome or bulbous shape. A metallic vapor deposition layer is disposed on at least one side of the thermoplastic. Inner and outer rubber layers are bonded on opposite sides of the metallic coated film so that the metallized thermoplastic film forms a barrier film to effectively slow the permeation of a gas such as nitrogen through the diaphragm or bladder.SELECTED DRAWING: Figure 1
Inventors:
JOE WALKER
PAUL J HOCHGESANG
NATE TUCKERMAN
PAUL J HOCHGESANG
NATE TUCKERMAN
Application Number:
JP2020103587A
Publication Date:
January 28, 2021
Filing Date:
June 16, 2020
Export Citation:
Assignee:
FREUDENBERG NOK GENERAL PARTNERSHIP
International Classes:
F16J3/04; F15B1/14
Domestic Patent References:
| JP2012517918A | 2012-08-09 | |||
| JPH0435935A | 1992-02-06 | |||
| JPH0292102U | 1990-07-23 | |||
| JPS63160403U | 1988-10-20 |
Foreign References:
| US20050031816A1 | 2005-02-10 |
Attorney, Agent or Firm:
Isshiki International Patent Service Corporation