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. 27, 1982
Filed:
Jul. 03, 1980
Richard S Guiler, Stewartsville, NJ (US);
E. J. Brooks Company, Newark, NJ (US);
Abstract
A seal for a pipe coupling such as is used to connect a gas meter to a gas supply line. The seal is made in two portions, which may be connected by a flexible web, and the portions have integral means for locking together around the nut of a coupling. Each portion has an outer shell with internal protrusions formed on the inner surface thereof. The portions are made of pigmented plastic of a type, such as polypropylene, that forms a white blush on the surface when permanently deformed. Hence when an attempt is made to remove the seal by a wrench or the like, the internal protrusions are forced against the nut, forming white blushes on the outer surface opposite the position of the ribs, giving visual evidence of tampering.