Single and multiple section pipe repair or service clamps

Details Single and multiple section pipe repair or service clamps Single and multiple section pipe repair or service clamps

F - Mech Eng,Light,Heat,Weapons

16

L

189/14

F16L 55/16 (2006.01) F16L 21/00 (2006.01)

Patent

CA 1177417

SINGLE AND MULTIPLE SECTION PIPE REPAIR OR SERVICE CLAMPS ABSTRACT A low profile pipe clamp for use in encircling a pipe such as a main or the like, the clamp being either a repair clamp or a service clamp with a side outlet. The pipe clamp comprises a flexible band, usually of sheet metal with a gasket material on the interior thereof and having at least a pair of opposed looped ends which receive tubular or hollow trunnion loading bars. One of the trunnion loading bars is provided with an aperture therethrough for receiving a T-bolt, whereas the other trunnion bar is provided with a slot having a widened portion capable of receiving the T-head of the T-bolt. By use of the trunnion loading bars, the load created during drawing together of the looped ends by the T-bolt and nut assembly is uniformly spread across the width of the looped ends and this permits higher torques to be utilized when tightening the nut on the T-bolt and higher clamping loads may be applied by the band to the pipe. The T-bolt is preassembled in the trunnion bar having the aperture therethrough with the nut being applied to the T-bolt and then the T-head of the T-bolt may be flipped or pivoted into the other trunnion loading bar through the enlarged portion of the slot in the other trunnion loading bar. The trunnion loading bar having the slot therein is temporarily held in a predetermined position prior to installation of the clamp so as to make for easier control in flipping the T-head of the T-bolt into position within the slot. On large clamps where more than one T-bolt and nut assembly is provided in spaced parallel realtionship across the width of the clamp the trunnion loading bar which initially retains the T-bolt is made into a plurality of coaxial elements so that each of the T-bolts may be independently pivoted into position during assembly.

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