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:
Nov. 06, 2001
Filed:
May. 25, 2000
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A small-size scroll compressor is provided wherein strength of key portions has been enhanced without increasing ring width, ring diameter or key widths of an Oldham's ring. In the Oldham's ring,, a rotated elliptical ring,is formed on x- and y-axes of coordinates by rotating an elliptical ring,having axes of coordinates of the major axis and the minor axis respectively in a first radial direction (X-axis) and in a second radial direction (Y-axis) by a predetermined angle in a direction reverse to the direction of revolution of the shaft, and first keys,and second keys,are respectively opposingly disposed in the first radial direction and in the second radial direction on the rotated elliptical ring,. By employing this configuration, the ring width, ring diameter or key widths of the Oldham's ring,do not need to be increased, and the length of arm from the point of stress concentration on the bases of the key portions can be shortened, thus relieving the bending moments of the keys and resulting in the control of vibration during high-speed, high-pressure operation and in the improvement of the durability of the key portions.