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, 2007
Filed:
Nov. 26, 2001
Akihiko Kubota, Chigasaki, JP;
Hidetoshi Nishihara, Fujisawa, JP;
Masahiko Osaka, Chigasaki, JP;
Toshihiko Ota, Fujisawa, JP;
Hiroki Awashima, Fujisawa, JP;
Manabu Motegi, Koshigaya, JP;
Kazuhito Noguchi, Chigasaki, JP;
Takeshi Kojima, Yokohama, JP;
Masahiro Kakutani, Fujisawa, JP;
Akihiko Kubota, Chigasaki, JP;
Hidetoshi Nishihara, Fujisawa, JP;
Masahiko Osaka, Chigasaki, JP;
Toshihiko Ota, Fujisawa, JP;
Hiroki Awashima, Fujisawa, JP;
Manabu Motegi, Koshigaya, JP;
Kazuhito Noguchi, Chigasaki, JP;
Takeshi Kojima, Yokohama, JP;
Masahiro Kakutani, Fujisawa, JP;
Matsushita Refrigeration Company, Osaka, JP;
Abstract
This invention relates to a hermetic compressor used on a refrigerant cycle such as a refrigerator, and discloses a low noise compressor designed to attenuate a resonance sound in a compression chamber and intake pressure pulsing more operatively at a position adjacent to their sources, which intake pressure pulsing occurs at an intake valve port. In the compressor, a resonance spaceis provided adjacent to the intake valve portthat is closer in distance to a noise source. As a result, noise can be reduced more operatively than muffling functions of an intake mufflerdo. In addition, although acoustic characteristics of the intake muffleramplify noises having specific frequencies, such noises can be attenuated before being amplified.