Joint restraint assembly

Details Joint restraint assembly Joint restraint assembly

2007-09-11

2007-09-11

Omgba, Essama (Department: 3726)

Metal working

Method of mechanical manufacture

Assembling or joining

C029S434000, C029S525010, C029S525110

Reexamination Certificate

active

11458200

ABSTRACT:
A joint restraint assembly for connecting pipe ends together, or to other objects, which includes a body encircling the pipe. The body has a plurality of cavities adjacent to the pipe with a segment configured to fit into each cavity. One or more threaded bores are disposed through the body into each cavity. A threaded bolt extends through each threaded bore to engage the segment in that cavity, and to pre-load the segment against the pipe when assembled thereon. Mechanical or pressure loading, tending to pull the pipe out of the restraint assembly, causes the segment to self actuate, and the application of increasing load causes a proportional increase to the force engaging the segment to the pipe. The joint restraint assembly reliably accommodates comparatively high levels of mechanical loading and/or pipe internal pressure, and does so without relying upon the limited force produced by the threaded bolt pre-load on the segments at the time of assembly.

REFERENCES:
patent: 817300 (1906-06-01), David
patent: 3333872 (1967-08-01), Crawford, Sr. et al.
patent: 3726549 (1973-04-01), Bradley, Jr.
patent: 4092036 (1978-05-01), Sato et al.
patent: 4124229 (1978-11-01), Ahlstone
patent: 4124230 (1978-11-01), Ahlstone
patent: 4124231 (1978-11-01), Ahlstone
patent: 4124232 (1978-11-01), Ahlstone
patent: 4124233 (1978-11-01), Ahlstone
patent: 4397485 (1983-08-01), Wood
patent: 4417754 (1983-11-01), Yamaji et al.
patent: 4647083 (1987-03-01), Hashimoto
patent: D294384 (1988-02-01), Endo et al.
patent: 4779900 (1988-10-01), Shumard
patent: 4848808 (1989-07-01), Pannell et al.
patent: 4896903 (1990-01-01), Shumard
patent: 4940259 (1990-07-01), Williams
patent: 5060989 (1991-10-01), Gallucci et al.
patent: 5071175 (1991-12-01), Kennedy, Jr.
patent: 5224741 (1993-07-01), Burkit et al.
patent: 5288108 (1994-02-01), Eskew et al.
patent: 5441082 (1995-08-01), Eskew et al.
patent: 5544922 (1996-08-01), Shumard et al.
patent: 5772252 (1998-06-01), Malani
patent: 6173993 (2001-01-01), Shumard et al.
patent: 6322273 (2001-11-01), Gentile, Jr.
patent: 6739631 (2004-05-01), Smith et al.
patent: 7093863 (2006-08-01), Holmes et al.
patent: 7185924 (2007-03-01), Longacre et al.
patent: 2005/0140139 (2005-06-01), Lundstrom
EBAA Iron Sales, inc. Series 2000PV Megalug Retainer Glands for PVC Pipe with Cast-Iron or I.P.S. Outside Diameters with M.J. Bells, 2 pages, Nov. 1991, Texas.
EBAA Iron Sales, Inc. Series 3000 Multi-Purpose Wedge Action Restraint, 1 page. Jun. 1997, Texas.
EBAA Iron Sales, Inc. Wedge Action Megalug, 6 pages, Jan. 1992, Texas.
Ford Meter Box Co., Inc. Uniflange® Series 1500 “Circle-Lock” for PVC Pipe, 8 pages, Mar. 1998, Indiana.
SIGMA/NAPPCO, Superlug™, 3 pages, 1995, New Jersey.
Star® Pipe Products, Inc. Stargrip® Star® Pipe Introduces the New Generation Mechanical Joint Restraint System for Ductile Iron Pipe, 2 pages, 1999, Texas.

Affiliated with

Also associated with

Rating

Joint restraint assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Joint restraint assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Joint restraint assembly will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3737382