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. 27, 1990
Filed:
Dec. 13, 1988
Kiyoshi Ohashi, Shiga, JP;
Nippon Denki Garasu Kabushiki Kaisha, Otsu, JP;
Abstract
A vacuum type solar heat collecting apparatus comprising a transparent, elongated cylindrical glass container sealed at one end and opening at the other end which is reduced in diameter, a cylindrical metal water-reservoir sealed at one end and opening at the other end which is reduced in diameter, and being coaxially disposed in the glass container through supporters, the outer surface of the water-reservoir being coated with a selective absorption film, a first elongated pipe extending to the vicinity of the sealed end in the water-reservoir through the open ends of the glass container and water-reservoir, a second short pipe extending through the open end of the container for connection to the open end of the reservoir, and a sealing metal fixture which seals the opening part of small diameter of the glass container, wherein space between the glass container and the water-reservoir is kept in vacuum, and water is fed into the water-reservoir through either of the first pipe and second pipe, and is stored to collect heat in the water-reservoir, being taken out as hot water.