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US 6,581,696 B2Granted
Processes of determining torque output and controlling power impact tools using a torque transducer
AssigneeChicago Pneumatic Tool Company
InventorDavid A. Giardino
Life of this patent
Estimating the term…
Abstract
An impact tool having a control system for turning off a motor at a preselected torque level.
Claims39
A method, comprising:
- measuring a signal relating to a time-varying force over a time interval, said time-varying force over said time interval imparting a torque to an output shaft of a power tool;
- and
- determining said torque from said measured signal over said time interval.
An apparatus, comprising:
- measuring means for measuring a signal relating to a time-varying force over a time interval, said time-varying force over said time interval imparting a torque to an output shaft of a power tool;
- and
- determining means for determining said torque from said measured signal over said time interval.
A power tool comprising:
- a motor;
- an output shaft, operatively attached to said motor, such that said output shaft receives a time-varying force over a time-interval;
- a sensor, operatively attached to receive data from said output shaft, said data relating to said time-varying force;
- and
- a data processor for processing said data.
2 more elements
Dependencies are inferred from the claim text.