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. 05, 1984
Filed:
Sep. 30, 1982
Applicant:
Inventor:
Joseph Quinn, Kearny, NJ (US);
Assignee:
Fetterolf Corporation, Skippack, PA (US);
Primary Examiner:
Int. Cl.
CPC ...
F16L / ;
U.S. Cl.
CPC ...
138 943 ; 138 44 ;
Abstract
A spectacle line blind includes a pivotable or rotatable spectacle plate having at one end a conventional full opening providing little obstruction to flow of liquid or gas. On the other end of the spectacle valve plate a blank disc seals one of said inlet and outlet ducts. The opposite side of this blank disc includes spacers having axial and radial openings therebetween which permit gases to vent to the atmosphere from the other duct.