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. 14, 1976
Filed:
Sep. 26, 1975
Applicant:
Inventor:
Julius Lerner, Broomall, PA (US);
Assignee:
Sun Oil Company of Pennsylvania, Philadelphia, PA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G08B / ; B03C / ; H01H / ;
U.S. Cl.
CPC ...
340236 ; 200 6104 ; 200 / ; 210 85 ; 210222 ; 340242 ;
Abstract
A system for detecting the presence of a contaminating fluid in other, normal fluids. In one embodiment the system detects the presence of hydrocarbons in a liquid which is normally water. A barrier which is soluble in hydrocarbons but insoluble in water has one side in contact with the liquid. A liquid sensitive switch is positioned on the other side of the barrier. If hydrocarbons are present, they will dissolve the barrier and close the switch which will set off an alarm. In a second embodiment wherein water is the possible contaminant in hydrocarbons, a barrier which is soluble in water but insoluble in hydrocarbons is utilized.