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:
Mar. 28, 1989
Filed:
Aug. 31, 1987
Thomas N Lavin, Sausalito, CA (US);
Other;
Abstract
An optical fluid detector (10) has an opaque housing (12). There is a first passage (14) through the housing (12) to receive a transparent, flexible plastic tube (50). A second passage (20) through the housing (12) orthogonally intersects the first passage (14). A first receptacle (22) in the housing has a light emitting diode (D1) with a housing having a flat surface (30) engaging the receptacle (22) and facing the second passage (20). A second receptacle (24) at a second end of the second passage on an opposing side of the first passage (14) from the first receptacle has a photodetector (Q1) with a housing having a flat surface (32) facing the second passage (20). An output circuit (33) is connected to the photodetector.