Tools – Wrench – screwdriver – or driver therefor – Machine
Patent
1989-04-27
1990-07-24
Smith, James G.
Tools
Wrench, screwdriver, or driver therefor
Machine
81 5714, 81 5736, B25B 1700
Patent
active
049427946
ABSTRACT:
A torquing tool is provided which is adapted to tighten threaded connections located in hard to reach places to precise torque values. The torquing tool comprises a housing having a pair of spaced arms pivotably attached thereto. Each arm include a series of idler gears which terminate at a reversible output gear or drive shaft. The housing includes a gearing mechanism which drives a selector gear. The selector gear pivots between a first position which will actuate the idler gears and output gear in the first arm and a second position which will actuate the idler gears and output gear in a second arm. During use, the output gears of the torquing tool are mounted on a pair of spaced nuts; with the arms being pivoted to adjust for differing bolt centers. Next, a handle extending from the housing is actuated to move the selector gear between the first or second position to acutate the gears in either the first or second arms. The selected nut is then tightened by utilizing the non-selected nut as a reaction element. A known bellows system and torque readout provide the torque value for the nut being tightened. The torque tool of the present invention permits precise tightening of hard to reach nuts, in part, by use of the elongated pivotable arms which provide access to remote bolt locations regardless of the centering distance.
REFERENCES:
patent: 3783955 (1974-01-01), Gill
patent: 4515043 (1985-05-01), Gray
Ferguson John H.
Snyder Robert F.
Raymond Engineering Inc.
Smith James G.
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