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:
Dec. 27, 1977
Filed:
May. 03, 1976
Applicant:
Inventor:
Jude A Pauli, Florissant, MO (US);
Assignee:
Emerson Electric Co., St. Louis, MO (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F25B / ; G02B / ;
U.S. Cl.
CPC ...
1161 / ; 62125 ; 350319 ;
Abstract
A sight glass device for liquid line is provided which clearly demonstrates to an observer the state of the fluid in the line, and which magnifies even small bubbles of gas. The device includes a reflector surface separated from a convex lens by a fluid sight chamber. The optical effect of the lens, fluid and reflective surface is such that full, partially full, and gas bubbles all give distinctive and different visual indications to the observer.