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:
Feb. 16, 1988
Filed:
Sep. 23, 1986
Geoffrey A Lewis, West Midlands, GB;
Lucas Industries Ltd., Birmingham, GB;
Abstract
A cryogenic refrigeration apparatus comprises an electrically actuated compressor which supplies a working fluid to a free moving displacer which includes a regenerator matrix, so that a container in which the displacer is slidable has a cold end and an ambient temperature end. The matrix comprises a plurality of heat exchange elements which are graded lenthwise of the displacer so as to have larger surface areas adjacent the colder end of the matrix and a reduced flow resistance at the ambient end. The actuator for the compressor is responsive to signals which indicate that the displacer is at the colder end of the container and that the temperature of the colder end is above a pedetermined value.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile