Title:
DIAPHRAGM AND DIAPHRAGM VALVE
Document Type and Number:
WIPO Patent Application WO/2020/203553
Kind Code:
A1
Abstract:
[Problem] To provide a diaphragm and a diaphragm valve that: resolve the issues of reduction in air-tightness as a result of insufficient bolt tightening and damage to the diaphragm as a result of overtightening of bolts, etc.; and also reduce variation in performance such as diaphragm durability and simplify tightening work. [Solution] A diaphragm (4) having through-holes (13) provided therein that have a diameter that is larger than a diameter that a bolt can snugly pass through. Metal bolt insertion tubes (14) into which bolts can be inserted are fitted into the through-holes (13). The height of the bolt insertion tubes (14) is the same or less than the height of the through-holes (13).
Inventors:
OBARA SHUNJI (JP)
KOBAYASHI KEIGO (JP)
ISHIBASHI KEISUKE (JP)
HACHIMAN SOUTA (JP)
HORIKAWA YUSEI (JP)
KITANO TAICHI (JP)
MASUDA KAZUTAKA (JP)
KOBAYASHI KEIGO (JP)
ISHIBASHI KEISUKE (JP)
HACHIMAN SOUTA (JP)
HORIKAWA YUSEI (JP)
KITANO TAICHI (JP)
MASUDA KAZUTAKA (JP)
Application Number:
PCT/JP2020/013342
Publication Date:
October 08, 2020
Filing Date:
March 25, 2020
Export Citation:
Assignee:
FUJIKIN KK (JP)
International Classes:
F16J3/02; F16K7/12
Foreign References:
| US6047953A | 2000-04-11 | |||
| JP2000165125A | 2000-06-16 | |||
| JP2000291658A | 2000-10-20 |
Attorney, Agent or Firm:
MATSUMURA Naoto et al. (JP)
Download PDF: