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:
Aug. 10, 1976
Filed:
Mar. 04, 1975
Harry W Skinner, Fort Wayne, IN (US);
Max D Orn, Fort Wayne, IN (US);
Other;
Abstract
This invention relates to a pipe joint sealing device. The device includes an annular resilient body of rubber which is generally V-shaped in cross-section which defines inner and outer annular flanges or body portions. This annular body or rubber ring is fitted into the opening of a rigid concrete structure, such as a manhole, in fluid-type engagement therewith. This engagement is interlocking which prevents the accidental dislodgement of the rubber ring from the opening, and is achieved b casting the concrete into lockingengagement with the outer peripheral surface of the ring, this ring being provided with an annular anchor portion which in cross-section is of keystone shape.