Ratchet key chuck tool

Details Ratchet key chuck tool Ratchet key chuck tool

1987-07-02

1988-11-01

Schmidt, Frederick R.

Tools

Wrench, screwdriver, or driver therefor

Handle clutched to head

81482, B25B 1346

Patent

active

047810831

ABSTRACT:
A ratchet chuck key tool with a torque indicator for tightening and loosening a chuck. The device includes a one-way ratchet having a ratchet wheel, a pawl and a handle. The pawl, which is connected to the handle, drivingly engages and disengages the ratchet wheel as the handle is reciprocated. A shaft is connected to and rotates with ratchet wheel. A pair of chuck keys are mounted on opposite ends of shaft. One chuck key tightens a chuck and the other chuck key loosens a chuck, the handle being moved in the same direction for tightening and loosening of the chuck. One chuck key defines a purchase for turning the other chuck key and making the chuck finger tight. A torque indicator associated with the pawl provides an indication that the force required to rotate the handle and turn the chuck keys exceeds a predetermined torque level.

REFERENCES:
patent: 4534573 (1985-08-01), Somers

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