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:
Jun. 03, 1997
Filed:
Jun. 19, 1995
Applicant:
Inventor:
Edoardo Biscaldi, Saronno, IT;
Assignee:
Necchi Compressori s.r.l., Pavia, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01N / ;
U.S. Cl.
CPC ...
181272 ; 181229 ; 181403 ;
Abstract
A muffler for motor compressors for refrigeration appliances consisting of at least three expansion chambers interconnected by passages which are narrower than the chambers; a tube is located in one of said chambers and fastened to the outlet and inlet ports of said chamber. This tube is provided with openings to let the refrigerant gas flow through and for attenuating the resonance frequency of that gas. The diameter of the openings is inversely proportional to the number of openings.