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. 14, 1991
Filed:
Jun. 19, 1989
Gerald T Sweeney, Puyallup, WA (US);
Aardvark Corporation, Inc., Puyallup, WA (US);
Abstract
The end portions of the pipe section 2 have annular rabbets 14 and 16 in the outer and inner peripheral surfaces 10 and 12 thereof. The axially extending surfaces 14' and 16' of the rabbets are tapered substantially at a common angle so that when a pair 2' and 2' of the pipe sections are reversedly disposed end-to-end of one another, and driven together, the two sections form a male/female joint 18 therebetween. The joint is preserved by providing sets of axially successive ribs 20 and grooves 22 on the axially extending surfaces of the rabbets, which interengage with one another when the ends 8 of the sections abut the transversely disposed surfaces 14' and 16' of the rabbets.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile