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:
May. 12, 1987
Filed:
Aug. 29, 1986
William D Jones, Warminster, PA (US);
Other;
Abstract
A gasket particularly suited for providing a leak resistant, deflection tolerant seal for a bell and spigot type of pipe coupling is provided. The gasket comprises a rubber web having a plurality of identical sealing ribs projecting radially inward in axially spaced relation. Each rib has an enlarged tapered base portion and a narrow finger portion which inclines inwardly and axially therefrom in cantilever fashion and which terminates in a tip spaced radially from the base of an axially adjacent rib. The finger portions are deflected into engagement with their adjacent sealing ribs when the spigot portion of one pipe is inserted axially into the bell portion of the other in which the gasket is mounted. The sealing ring prevent leakage even when the coupled pipes are misaligned slightly.