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:
Jul. 18, 1989
Filed:
Nov. 23, 1987
Hirofumi Hashimoto, Toyota, JP;
Sensuke Hayashi, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
A method and an apparatus for controlling a flow rate of viscous fluid for feeding the fluid under pressure from a pump through a hose to a spray gun with a control unit. A temperature and a pressure of the viscous fluid in the hose is detected. Based on the detected temperature and a temperature-supplying pressure characteristic data stored in the unit, viscous fluid supplying pressure for obtaining a desired set flow rate is calculated. Based on the detected pressure of the fluid and the calculated supplying pressure, a signal for obtaining a desired supplying pressure is obtained and outputted. The gun is switched on to operate the pump at a constant speed to provide the desired set flow rate. Alternatively, only the pressure is detected and a pressure which is obtained in a previous operation and stored in the unit is used.