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:
Apr. 29, 2003
Filed:
Aug. 05, 2002
Frances H. Benton, Harrisville, NH (US);
Scully Signal Company, Wilmington, MA (US);
Abstract
An optically-based overfill detection probe is provided that has a prism made of a fluoropolymer, preferably TEFLON® PFA. The prism material has a high resistance to chemical solvents, is less prone to condensation and frost than plastic or glass, and enables the production of prisms at significantly less cost than glass. The probe also includes a two-piece housing structure that compresses an outwardly-extending portion of the prism material to firmly hold the prism in place, and forces the material into sealing contact with an inner surface of the housing. The housing has an elongate portion that encompasses the prism, and which extends toward the fluid, preventing any light which escapes the prism from being externally reflected back to the photodetector of the probe.