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:
Apr. 07, 1992
Filed:
Mar. 27, 1991
Hideo Mita, Okazaki, JP;
Hideo Misawa, Anjo, JP;
Akiyoshi Hirano, Toyota, JP;
Yoshihira Shiroshita, Toyoake, JP;
Aisin Seiki Kabushiki Kaisha, Kariya, JP;
Abstract
A refrigeration system includes a refrigerator having a compression portion having a compression cylinder and a compression piston moving slidably in the cylinder, a first heat excahnger, a regenerator and a second heat exchanger. An expansion portion has an expansion cylinder and an expansion piston moving slidably in the cylinder. A drive device drives the compression piston via a first rod and the expansion piston via a second rod. The compression cylinder includes a first large diameter portion where the compression piston is slidably moved and a first small diameter portion where the first rod is slidably moved, and the expansion cylinder includes a second large diameter portion where the expansion piston is slidably moved and a second small diameter portion where the second rod is slidably moved.