|4109551||Variable speed gear ratio transmission apparatus|
The variable speed gear ratio transmission apparatus of the present invention provides input differential means for dividing an input rotational force into two rotational components, output differential means for combining the divided component rotational...
|4037154||Circuit for calibrating instruments|
A circuit permitting an operator to accurately calibrate an instrument to indicate when a variable analog quantity being measured is zero. The analog signal is connected to the input of an operational amplifier which operates in stable mode for large anal...