Torque limiting wrench with an audio alarm

Details Torque limiting wrench with an audio alarm Torque limiting wrench with an audio alarm

1983-11-02

1985-08-20

Schmidt, Frederick R.

Tools

Wrench, screwdriver, or driver therefor

Responsive to torque on work

81476, B25B 23142

Patent

active

045356599

ABSTRACT:
A torque limiting wrench for limiting the magnitude of torque applied to a load is disclosed. The wrench comprises a fore-section rod having a head structure of a wrench or adjustable wrench, a fore-section member depending from the head structure and having two prongs and, a rear-section rod having a rear-section member with two flanges and a step round hollow rod depending from the rear-section member. A pivot mechanism connects the fore-section member to the rear-section member and allows the rods to pivot. An operational handle has a hollow cylinder with a base. A link shaft projects from the base and passes through the step round hollow rod. At the distal end of the link shaft is an adjustment block which is received by the interior surfaces of the rear-section member; the adjustment block is driven by rotation of the operational handle to adjust the pressure between the fore and rear-section members. The wrench also has a position audio alarm which makes an audible signal when the rods pivot, that is when the torque applied to the wrench is too great.

REFERENCES:
patent: 3276296 (1966-10-01), Woods

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