Device system and method for controlling the supply of power to an electrical load
Servo system and method for controlling the gap spacing between a tool and workpiece electrodes in an EDM machine Patent #: 4321451
ApplicationNo. 06/563441 filed on 12/20/1983
US Classes:248/550, WITH CONDITION RESPONSIVE CONTROL MEANS248/588, Crossing links250/559.29, Measuring position361/176Plural light sensors
ExaminersPrimary: Foss, J. Franklin
Assistant: Olson, Robert A.
Attorney, Agent or Firm
International ClassesA47C 3/20 (20060101)
A47C 31/00 (20060101)
A47C 31/12 (20060101)
A47C 3/30 (20060101)
B60N 2/50 (20060101)
B60N 2/52 (20060101)
AbstractAn improved seat with an air suspension is disclosed in which detector means, a control circuit and electromagnetic valves are cooperatively used to operate the air suspension so as to automatically control the amount of air to be contained within the air suspension according to the weights of different occupants of the seat. Outputs from the detection means for detecting the vertical displacements of the seat are inputted to the control circuit and held therein for a predetermined period of time before the control circuit is operated to control the amount of air to be contained within the air suspension.