Tools – Wrench – screwdriver – or driver therefor – Machine
Patent
1996-12-16
1999-07-27
Scherbel, David A.
Tools
Wrench, screwdriver, or driver therefor
Machine
29452, B25B 1700
Patent
active
059271574
ABSTRACT:
A bolting system for securing at least two structures having a bolt, a coupling nut, a hydraulic tensioner, and a lock nut. The bolt has a body with a threaded end and another end with a bolt head. The coupling nut is engageable with the threaded end of the bolt and has a top face having one or more dog indentations. The hydraulic tensioner has a hydraulic cell with an engagement end that engages the threaded end of the bolt. The hydraulic cell stretches the bolt while an engaging member of the hydraulic tensioner engages the dog indentations of the coupling nut with complementing, engaging member dogs. The engaging member rotates the coupling nut while the engagement end of the hydraulic tensioner tensions the bolt. The lock nut is engageable with the threaded end of the bolt.
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Gosling, M.C., "Improved Turbine Cylinder Bolting System", 1996, International Gas Turbine and Aeroengine Congress and Exhibition at Birmingham, U.K. (ASME paper 96-GT-524.).
HeliCoil Sales Literature Concerning Screw Thread Inserts.
Goodier, J.N., "The Distribution of Load on the Threads of Screws", Journal of Applied Mechanics Mar., 1940, pp. A-10-A-16.
Gosling, M.C., "Improved Turbine Cylinder Bolting System" (unpublished).
Stoeckly, E.E. and Macke, "Effect of Taper on Screw-Thread Load Distribution", Transactions of the ASME Jan., 1952, pp. 103-110.
Danganan Joni B.
Scherbel David A.
Siemens Westinghouse Power Corporation
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