Speed controlled signal system for depicting driver's action

• US 3,364,384 A
• Filed: 05/06/1966
• Issued: 01/16/1968
• Est. Priority Date: 05/06/1966
• Status: Expired due to Term

• Current Assignee: Dankert, Norman H.
• Original Assignee: Dankert, Norman H.
• Inventors: Dankert, Norman H.
• Application Number:
  US04/548,169
• Time in Patent Office: 620 Days
• US Class Current: 315/79
• CPC Class Codes: B60Q 1/442 visible on the front side of the vehicle, e.g. for pedestrians
• CPC Class Codes: G01P 15/0891 with indication of predetermined acceleration values G01P15/135 takes precedence
• CPC Class Codes: G01P 15/16 by evaluating the time-derivative of a measured speed signal

Claims

1. A CIRCUIT FOR CONTROLLING A SWITCH DEVICE RESPONSIVE TO A VARIABLE SPEED DRIVE MEANS COMPRISING:

AN ELECTRIC GENERATING MEANS CONNECTING SAID DRIVE MEANS;

A SWITCH DEVICE INCLUDING, A COIL FOR DEVELOPING A MAGNETIC FIELD, AND CONTACT MEANS OPERABLY RESPONSIVE TO SAID MAGNETIC FIELD OF SAID COIL;

A CIRCUIT CONNECTING SAID COIL AND SAID ELECTRIC GENERATING MEANS INCLUDING, A CAPACITOR, A BY-PASS CIRCUIT BETWEEN SAID CAPACITOR AND SAID ELECTRIC GENERATING MEANS FOR PROVIDING A PATH FOR SAID CAPACITOR TO DISCHARGE, AN AMPLIFYING MEANS HAVING AN INPUT CIRCUIT CONNECTING SAID CAPACITOR FOR AMPLIFYING THE CHARGING SIGNAL ACROSS SAID CAPACITOR, A SECOND AMPLIFYING MEANS HAVING AN INPUT CIRCUIT CONNECTING SAID CAPACITOR FOR AMPLIFYING THE DISCHARGING SIGNAL ACROSS SAID CAPACITOR, SAID FIRST AMPLIFYING MEANS HAVING AN OUTPUT CIRCUIT CONNECTING SAID COIL FOR CURRENT FLOW THERETHROUGH IN ONE DIRECTION, AND SAID SECOND AMPLIFYING MEANS HAVING AN OUTPUT CIRCUIT CONNECTING SAID COIL FOR CURRENT FLOW THERETHROUGH IN THE OPPOSITE DIRECTION.