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. 14, 2020
Filed:
Aug. 12, 2016
Sumitomo Heavy Industries, Ltd., Tokyo, JP;
Takaaki Morie, Kanagawa, JP;
SUMITOMO HEAVY INDUSTRIES, LTD., Tokyo, JP;
Abstract
A cryocooler includes a displacer, a cylinder in which the displacer is accommodated, a Scotch yoke mechanism which drives the displacer, and a housing in which the Scotch yoke mechanism is accommodated. The Scotch yoke mechanism includes a crank, a yoke plate, a second drive shaft, and a first drive shaft. The housing may include a drive mechanism accommodation chamber in which the crank and the yoke plate are accommodated, a first assist chamber in which a distal end of the first drive shaft is accommodated, and a second assist chamber which is provided between the drive mechanism accommodation chamber and a gas chamber or between the drive mechanism accommodation chamber and the first assist chamber. The first assist chamber and the second assist chamber can be adjusted to a higher pressure than the pressure in the drive mechanism accommodation chamber.