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. 25, 1992
Filed:
Apr. 03, 1991
Applicant:
Inventors:
Leslie B Lewis, Chestnut Hill, MA (US);
Timothy Robinson, Tewksbury, MA (US);
Assignee:
Asahi/America, Inc., Malden, MA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
137559 ; 251315 ;
Abstract
A thermoplastic valve assembly for use in controlling the flow of corrosive fluids comprising a transparent housing having a passageway through which fluid may flow, a transparent ball disposed in the passageway for rotation between an open position and a closed position, and transparent connector means for connecting the valve housing to a pipeline thereby enabling an operator to visually detect alignment of the ball, turbulence in the through passageway and wear and corrosion of the valve components.