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:
Jul. 16, 1985
Filed:
Mar. 25, 1983
William Rodgers, Turrella, N.S.W. 2205, AU;
Other;
Abstract
Flexible seals for joints in pipes for example spigots, flange and sleeve joints are disclosed. A ring seal for seating in the seal groove as a pipe joint between a first pipe and a second pipe consists of a ring body, an annular cavity defined by the ring body, a pair of annular sealing lips axially spaced on the ring body and joined by a midportion of the body and a passage through the ring body defines a fluid path from the zone between the sealing lips to a test-orifice in one of the pipes, flanges or sleeve. Various configurations of seals are disclosed. A method of pressure testing the joint is disclosed. A method of charging the joint with root growth inhibiting chemical is disclosed.