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.:
Date of Patent:
Mar. 26, 1991
Filed:
Jun. 06, 1989
Daido Metal Company, Ltd., Nagoya, JP;
Abstract
A flow detector according to the present invention is arranged in a fluid piping circuit, or at an inlet or an outlet of the fluid piping circuit and has a fluid inlet and a fluid outlet, and further comprises a piston having a magnetic member as a part thereof and reciprocated by pressure difference of the fluid between the fluid inlet and the fluid outlet, a fixed magnetic member positioned at a predetermined distance from the piston, and a detection sensor arranged in a position where the detection sensor is subject to alternate magnetic action from the magnetic member of the piston when the piston is reciprocated at a predetermined stroke, for detecting a flow of the fluid in response to change in the magnetic action.