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. 21, 1999
Filed:
Dec. 17, 1997
William D Brelig, Ivoryton, CT (US);
Brian T Moore, Westbrook, CT (US);
The Lee Company, Westbrook, CT (US);
Abstract
A removable, expansion sealing plug has an annular seal formed of an elastic material, which seal is expanded by a fruste-conical expansion member when the expansion member is drawn into a retention member, the retention member having an outer surface with screw threads, and the expansion member being rotationally fixed, but axially movable, relative to the retention member. When installed, retention member screw threads fix the plug in position and prevent forcible expulsion from the installation hole and the expansion of the seal causes compression of the seal between the wall of the installation hole and the expansion member and frictional interference between the seal and the installation hole and between the seal and the expansion member, thereby preventing the rotation of the plug within the installation hole.