DAVID F TOLER
Engineers in Easton, PA
License number
Pennsylvania PE039674R
Category
Engineers
Type
Professional Engineer
Address
Address
Easton, PA 18045
Professional information
Joint Restraint Assembly
US Patent:
7266875, Sep 11, 2007
Filed:
Jul 18, 2006
Appl. No.:
11/458200
Inventors:
Charles J. Longacre - Danielsville PA, US
David F. Toler - Easton PA, US
David F. Toler - Easton PA, US
Assignee:
Sigma Corporation - Cream Ridge NJ
International Classification:
B23P 11/02, F16L 21/00
US Classification:
29446, 29434, 2952501, 2952511
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.
Joint Restraint Assembly
US Patent:
7185924, Mar 6, 2007
Filed:
Aug 8, 2003
Appl. No.:
10/637139
Inventors:
Charles J Longacre - Danielsville PA, US
David F. Toler - Easton PA, US
David F. Toler - Easton PA, US
Assignee:
Sigma Corporation - Cream Ridge NJ
International Classification:
F16L 21/00
US Classification:
285404, 285337
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.