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. 29, 1994
Filed:
May. 20, 1993
David E Brown, Brunswick, OH (US);
David E Purcel, Elyria, OH (US);
Clark-Reliance Corporation, Strongsville, OH (US);
Abstract
A sanitary sight indicator for viewing the contents of a production process is provided. The sanitary sight indicator includes a body, an optical unit, and a sanitary connection between the body and the optical unit. The body includes a process-interfacing portion which is adapted to interface with the production process and an optical-interfacing portion which interfaces with the optical unit. The optical unit includes a viewing portion for viewing the contents of the production process and a body-interfacing portion which interfaces with the optical-interfacing portion of the body. The sanitary connection includes a sanitary gasket having a substantially flat annular portion, and first and second annular projections which are approximately semi-circular in cross-sectional shape and which extend outwardly from opposite sides of the annular portion. The sanitary connection further includes a sanitary gasket-groove in each of the optical unit-interfacing portion and the body-interfacing portion. Each of the sanitary-gasket grooves includes a flat surface supporting the flat annular portion of the sanitary gasket and a channel supporting one of the annular projections of the sanitary gasket. Such a sight indicator may be in the form of a 'sight flow indicator' for installation in a process line or a 'sight window' for installation on a process tank.