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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 8047225 B1

PDFFull Text
Expired
Date of Patent:
Nov. 01, 2011

Filed:

Apr. 10, 2009

Method for water hammerless opening of fluid passage, and method for supplying chemical solutions and device for water hammerless opening for which the method is used

Applicants:

Tadahiro Ohmi, Sendai, JP;

Kouji Nishino, Osaka, JP;

Masaaki Nagase, Osaka, JP;

Ryousuke Dohi, Osaka, JP;

Nobukazu Ikeda, Osaka, JP;

Ryutaro Nishimura, Osaka, JP;

Inventors:

Tadahiro Ohmi, Sendai, JP;

Kouji Nishino, Osaka, JP;

Masaaki Nagase, Osaka, JP;

Ryousuke Dohi, Osaka, JP;

Nobukazu Ikeda, Osaka, JP;

Ryutaro Nishimura, Osaka, JP;

Assignees:

Fujikin Incorporated, Osaka, JP;

Tadahiro Ohmi, Miyagi, JP;

Attorney:

Griffin & Szipl, P.C.

Primary Examiner:

Stephen M Hepperle

Assistant Examiner:

William McCalister

Int. Cl.
CPC ...
F16K 31/42 (2006.01);
U.S. Cl.
CPC ...
Abstract

The water hammerless opening device comprises an actuator operating type valve installed on the fluid passage, an electro-pneumatic conversion device to supply the 2-step actuator operating pressure Pa to the afore-mentioned actuator operating type valve, a vibration sensor removably fixed to the pipe passage on the upstream side of the actuator operating type valve, and a tuning box to which the vibration detecting signal Pr detected by the vibration sensor is inputted, through which the control signal Sc to control the step operating pressure Ps' of the afore-mentioned 2-step actuator operating pressure Pa is outputted to the electro-pneumatic conversion device, and with which the 2-step actuator operating pressure Pa, of the step operating pressure Ps′ which makes the vibration detecting signal Pr nearly zero, is outputted from the electro-pneumatic conversion by adjusting the control signal Sc.

Find Patent Forward Citations

Ohmi, Tadahiro. (2011). Method for water hammerless opening of fluid passage, and method for supplying chemical solutions and device for water hammerless opening for which the method is used (U.S. Patent No. 8047225). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8047225

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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