Procedure for the generation of control signals in a push button box, and a push button box designed for implementing the procedure
Patent 5047773 Issued on September 10, 1991. Estimated Expiration Date: 
December 22, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
December 22, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3265826 3906369 Control system for mechanical handling installation Keyboard actuatable with the aid of the fingers of at least one hand Magnetic switching device for contact-dependent and contactless switching Keyboard Magnetic switch Inductively coupled position detection system Patent #: 4646087 InventorsAssigneeApplicationNo. 454996 filed on 12/22/1989US Classes:341/176, Transmitter for remote control signal200/557, Actuator biasing mechanism212/285, Remote control or at dual control positions335/207, Plural magnets340/685CranesExaminersPrimary: Swann, III, Glen R.Assistant: Mullen, Thomas J. Jr. Attorney, Agent or FirmForeign Patent References
International ClassesG08C 019/12H01H 021/24 B66C 013/40 Foreign Application Priority Data1988-12-22 FIAbstractIn a method for the generation of control signals in a push button box and transmission of the signals for the control of a machine, signals representing the position of a push button element are transferred by a non-contacting mode from the push button element to a signal generating unit, which is adapted to produce control signals proportional to the position of the push button element. A push button box for carrying out the method comprises at least one push button element, a signal generating unit adapted to receive the signals representing the position of the push button element by non-contacting mode, and further adapted to generate control signals proportional to the position of each of the push button elements, and a partition between each push button element and the signal generating unit.Field of SearchTransmitter for remote control signalCranes Wired Coded message Disturbance of magnetic field Magnetic snap Rocking actuator (e.g., rocker, lever) Actuator biasing mechanism Receiver control signal originates at message transmitter PERMANENT MAGNET-ACTUATED SWITCHES Plural switches Plural magnets Control moves in two planes | |
