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:
Feb. 06, 2007
Filed:
Jun. 19, 2003
Douglas E. Adams, West Lafayette, IN (US);
Yoshinobu Ichikawa, Gunma ken, JP;
Jeongil Park, West Lafayette, IN (US);
Werner Soedel, West Lafayette, IN (US);
Douglas E. Adams, West Lafayette, IN (US);
Yoshinobu Ichikawa, Gunma ken, JP;
Jeongil Park, West Lafayette, IN (US);
Werner Soedel, West Lafayette, IN (US);
Sanden Corporation, Gunma, JP;
Abstract
A multi-cylinder compressor includes a valve plate having a plurality of cylinder suction ports formed therethrough, and a plurality of cylinder bores centered on an arc having a radius (R). The cylinder bores are substantially equally spaced from each other, and have a diameter (D). The compressor also includes a suction chamber having a substantially annular shape and adapted to be in fluid communication with each of the cylinder bores via the suction ports. Moreover, a center of a first of the suction ports is radially offset in a predetermined direction from a center of a predetermined suction port by a first angle, in which the predetermined suction port has a diameter (d), and the first angle equals {[(360°/N)·([N−1]−n)]+X°}. In this formula, N is a number of the suction ports formed through the valve plate, n is a number of the suction ports positioned between the first suction port and the predetermined suction port in a direction opposite to the predetermined direction, and X° is a predetermined angle which is less than or equal to {(sin[(D−d)/2·R])·57.3°/Radian} and greater than or equal to −{(sin[(D−d)/2·R]·57.3°/Radian}, and which is not equal to 0°.