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. 23, 2013
Filed:
Jul. 02, 2010
Robert C Hon, Ft. Mitchell, KY (US);
Lowell a Bellis, Long Beach, CA (US);
Julian a Shrago, Garden Grove, CA (US);
Carl S. Kirkconnell, Huntington Beach, CA (US);
Robert C Hon, Ft. Mitchell, KY (US);
Lowell A Bellis, Long Beach, CA (US);
Julian A Shrago, Garden Grove, CA (US);
Carl S. Kirkconnell, Huntington Beach, CA (US);
Raytheon Company, Waltham, MA (US);
Abstract
In one embodiment, a compressor includes a motor assembly configured to compress a gas within a compression volume, the motor assembly including: a stationary coil assembly; a moving assembly having at least one magnet, and a gap located between the stationary coil assembly and the moving assembly; wherein the moving assembly is configured to reciprocate axially with respect to the stationary coil assembly when electrical current is applied to the stationary coil assembly, and to change the width of the gap between the stationary coil assembly and the moving assembly so as to provide magnetic axial stiffness against motion of the moving assembly. One or more embodiments may be used in a cryocooler assembly.