Research, Incorporated

The Pennsylvania Research Corporation

Research Company

Carl Volz, Sr

Robert R Brownlee

Frank O Tyers

G Frank Tyers

Thomas W Collins

Paul H Schweitzer

An adaptive digital electronic control system for an internal combustion engine wherein a given speed modifying parameter is perturbated about a given setting and the resulting effect on the engine's output shaft speed is computed for producing an electrical control signal for adjusting the setting in a way which tends to maximize the shaft output power. Described are arrangements whereby the electronic control system can be applied to a spark ignition system, the air/fuel control of a standard carburetor or the air/fuel control of a fuel injection system.

Adaptive control system for power producing machines

A system for telemetering the performance of an implanted cardiac pacer incorporating a low power, low voltage, frequency-voltage sensitive pulse generator which supplies a pulse-interval-modulated telemetry output and includes an astable complementary multivibrator in combination with a voltage clipping feedback network.

Low current telemetry system for cardiac pacers

An hermetically-sealed cardiac pacemaker which may be operated on a single non-rechargeable cell or a magnetic-induction-rechargeable mercury cell that is hermetically sealed along with an outgas alleviating material in a separate container within an integral stainless steel outer case, which case also houses the system electronics. The integral case is formed with an opening in which a closure plate is disposed in a recessed position and sealed about its periphery to the interior of the opening to form a receptacle in the exterior of the casing. The receptacle is filled with a biocompatible material to isolate the seal from the exterior of the casing and the case acts along with the internal electronics during recharging as a charging current regulator system which maintains a substantially constant power transfer from the charging transmitter to the internal receiver despite variations in their proximate spacing.

Hermetically sealed cardiac pacer system and recharging system therefor

A low current, low voltage impulse generating system for cardiac pacers using a complementary multivibrator in combination with an RC network which operates in an astable, supply voltage insensitive mode to produce fixed rate pacing pulses.

Growing community of inventors

State College, PA, United States of America

Carl Volz, Sr