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. 17, 2001
Filed:
Sep. 10, 1999
Takeshi Kumazawa, Fuji, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
In an H/A range in which the ratio H/A≧0.07, where H is the thickness of the bottom wall of a recess (,) provided with a discharge port (,) and a valve seat (,) and formed in the flange (,) of a bearing member (,′) and A is the width of the recess (,), the smaller the ratio H/A, the greater is the coefficient of performance (COP). In an H/A range in which H/A<0.07, the COP decreases due to the leakage of the refrigerant resulting from the deflection of the bottom wall of the recess (,) and, eventually, the bearing members (,′) are broken. The discharge port (,), the recess (,) and the valve seat (,) are formed so that the ratio H/A≧0.07 and the ratio T/B≦0.3, where T is the thickness of the valve seat (,) and B is the diameter of the discharge port (,). The valve seat (,) can be formed in the thickness T smaller than that of the valve seat of an equivalent conventional compressor, suppressing the deflection of the bottom wall of the recess (,).