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:
Sep. 18, 2001
Filed:
Jun. 02, 1999
Edwin L. Gannaway, Adrian, MI (US);
Tecumseh Products Company, Tecumseh, MI (US);
Abstract
A hermetic rotary compressor comprising a housing, a cylinder block and a bearing assembly in the housing and defining a cylindrical cavity therein. A roller piston, drivingly coupled to a motor, is disposed in the cylindrical cavity. The cylinder block includes a reciprocating vane within a vane slot defined therein. The vane slot extends axially through said cylinder block, radially from an outside perimeter surface of the cylinder block to the cylindrical cavity. At least a portion of the vane slot is defined by a pair of substantially parallel sidewalls with the vane disposed in the vane slot and urged against the roller piston. The vane is guided by the substantially parallel sidewalls and a clearance exists between the vane and the substantially parallel sidewalls. A pool of liquid lubricant is disposed within a sump defined by a discharge chamber and a lower portion of the vane and the clearance are immersed in the liquid lubricant, whereby the vane is lubricated and a refrigerant gas seal is established between the clearance and the vane.