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:
Jun. 21, 2005
Filed:
Jun. 17, 2002
Dale Evan Kiikka, Athens, OH (US);
Dale Evan Kiikka, Athens, OH (US);
Global Cooling BV, Armhem, NL;
Abstract
The invention can prevent gas leakage and reduce friction force while relaxing tolerance for manufacturing a displacer and the like for Stirling cycle machines. Gas leakage between the outer periphery of a seal () and the inner peripheral surface () of a cylinder () is prevented. Accordingly, precise finish of the radial clearance between the displacer () and the cylinder () is not required. As the difference of pressures between the front and rear spaces of the displacer () is small, the gas leakage is sufficiently prevented without pressing the seal () against the inner peripheral surface () of the cylinder (). On the other hand, as the friction force generated between them is significantly small, it does not affect the reciprocation of the displacer. As the seal () is provided so as not to be restricted axially and radially, the displacer is kept closely contacted with the inner peripheral surface () of the cylinder () even if the displacer () eccentrically shifts.