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:
Mar. 27, 1979
Filed:
Jan. 16, 1978
Salvatore Buda, East Hills, NY (US);
Berger Industries, Inc., Maspeth, NY (US);
Abstract
A coupling sleeve surrounds two adjacent pipe ends to be coupled together. A continuously-converging, spiral-shaped channel is provided at opposite end regions of the sleeve. A continuously-converging spiral-shaped split constrictable member is located in and angularly movable through each channel. Actuating members in force-transmitting relationship with each trailing end region of a respective constrictable member are operative for angularly moving the latter through each channel, and for radially constricting each constrictable member about and in sealing engagement with the entire periphery of each respective pipe end. In the fully clamped position, each leading end region is overlapped by each respective trailing end region. The spiral-shaped channel is formed in one embodiment by spiral-shaped walls of the sleeve itself, or in another embodiment by a spiral-shaped insert which is received in a circular groove formed by circular-shaped walls of the sleeve.