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US 7,062,879 B2Granted
Security gate
AssigneeFederal APD, Inc.
InventorsJoseph F. Wenzl, Peter M. Hines, Robert W. Keyes, Ronald A. Harrow, Jeffrey W. Mote, Mitchell Van Ochten
Life of this patent
Estimating the term…
Abstract
A security gate is coupled via a positive-drive mechanical linkage to a DC gear motor, operative in response to a defined output voltage profile, to provide precise rotation and counter-rotation of the security gate through a defined range of motion.
Claims15
A security gate assembly comprising:
- an elongate gate arm movable along a defined pathway of travel;
- a DC motor having an output disposed to provide a torque upon receipt of a first series of output pulses;
- a linkage mechanism attached to one end of said gate arm and to the DC motor output and disposed to cause rotation of the gate arm in accordance with the DC motor output;
- and
- an adaptive control circuit disposed to monitor a plurality of operating conditions including data concerning the weight of the gate arm, and to develop a signal indicative of the position of the gate arm, said adaptive control circuit providing said first output pulses to said DC motor in response to the plurality of operating conditions including the weight of the gate arm such that said first output pulses are varied in accordance with at least said signal indicative of the position of the gate arm and said data concerning the weight of the gate arm.
2 more elements
Dependencies are inferred from the claim text.