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:
Sep. 03, 1991
Filed:
Dec. 29, 1989
Hazime Tanaka, Yokohama, JP;
Kazuhiko Watanabe, Kanagawa, JP;
Fuji Koki Mfg. Co. Ltd., Tokyo, JP;
Abstract
A thermo bulb for use with a thermostatic expansion valve, includes a temperature sensing cylinder connected to a power element of a valve unit of the thermostatic expansion valve, a thermal ballast arranged in the temperature sensing cylinder and made by a ceramic sinter which has silica and alumina as its main components, an operating fluid sealed in the temperature sensing cylinder to change from gas to liquid and vice versa response to temperature sensed by the cylinder at an outlet of an evaporator of a refrigeration system, and an arrangement for fixing the thermal ballast into a certain position in the temperature sensing cylinder so as not to prevent the thermal ballast from making contact with an inner surface of the temperature sensing cylinder.