Hanger with bolt closure

摘要

A pipe hanger method and apparatus wherein a bolt is threaded upwardly through a first opening within a lower arm portion of a saddle, then, in one form, through an opening in a liner, then through a larger opening in the upper arm portion of the saddle. The opening is non-cylindrical in shape. A nut is then installed on the bolt. The nut has a tapered end portion which interoperates with the shape of the opening in the upper arm of the saddle. The nut is hand-tightened and then is aligned with the opening so that the small end portion would drop into the opening. A wrench is then used on the head of the bolt to rotate the bolt for the purpose of drawing the nut and bolt together and applying a clamping force on a pipe positioned within the saddle. The liner extends along the inside of the bolt and then extends about the pipe, between it and the bight of the saddle, and then in one form extends along the inside of the upper arm portion.

主权项

1. An improved pipe receiving saddle assembly constructed from a plurality of flat metal bars and comprising a lower clamp strap, an upper clamp strap, said upper and lower clamp straps each having at least one free outer end, said upper and lower clamp straps defining between them a pipe avenue for accommodating a pipe section; a support leg having an end that is attached to an external surface of said upper clamp strap; and an improved system for securing a pipe within the saddle assembly, the improvement comprising:
a first bolt comprising a rod body, an enlarged head at a first end of said rod body and a threaded end portion at a second end of said rod body; a first improved nut comprising a central opening that is threaded with threads which complement a threaded end of the first bolt, said first nut including a tapered small end portion having a cross-sectional shape that is other than circular, and a flange portion substantially larger in diameter than the tapered small end portion; wherein the non-circular surface of the tapered small end of the improved nut is tapered from a distal portion radially outward to the flange portion wherein the non-circular surface is radially wider adjacent the flange portion than at the distal portion and the non-circular surface engages an inner surface of a non-circular opening in the upper clamp strap; a first opening in said lower clamp strap which is smaller in size than the head of the first bolt but is larger in size than the rod body of the first bolt; a first non-circular opening in said upper clamp strap, said non-circular opening being substantially larger in size than the rod body of the first bolt, so that the rod body also fits loosely in said first non-circular opening, and smaller in size than the flange portion of the first nut, and being sized and complementary shaped to snugly receive the tapered small end portion of the first nut, and hold said small end portion of the first nut, against rotation; whereby the saddle assembly is operably configured such that the pipe section configured to be moved upwards into position adjacent the upper clamp strap, and the threaded end of first bolt configured to be inserted through the first opening, and then through the first non-circular opening, and then the improved first nut configured to be applied to the bolt with its tapered small end portion directed towards the first non-circular opening, and the first bolt configured to be screwed into the first nut and the first nut configured to be positioned within the first non-circular opening, and the head of the first bolt configured to be rotated for drawing the first nut toward the head of the first bolt, with the fit of the tapered small size first end portion of the first nut centered within the first non-circular opening serving to hold the first nut against rotation while the first bolt is being rotated, and engagement of the tapered small end of the first nut within the first non-circular opening, backed by the flange portion of the first nut, resulting in the first nut and first bolt substantially stiffening the upper and lower clamp straps as the first nut and first bolt are drawn together; and a locking insert provided within the central opening of the first nut; and wherein the locking insert is longitudinally opposite the small tapered end portion of the first nut with the flange portion therebetween.