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:
Apr. 20, 1982
Filed:
Dec. 09, 1980
Applicant:
Inventor:
Alfredo Bar, Pavia, IT;
Assignee:
NECCHI Societa per Azioni, Pavia, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
417569 ; 13751215 ; 13751611 ; 137851 ;
Abstract
The invention relates to a valve system for encapsulated motor-compressor units comprising a cylinder, a piston moving with reciprocating motion in the cylinder, a valve plate which upperly closes the cylinder, and a head fixed on to the valve plate, wherein in the valve plate there are provided two delivery ports having cross-sections of different size, so as to create in the lamina valve an asymmetric elastic deformation which favors gradual impact of the valve against the valve plate at the end of the compression cycle.