Automatic headlight control system

• US 3,273,012 A
• Filed: 11/13/1963
• Issued: 09/13/1966
• Est. Priority Date: 11/13/1963
• Status: Expired due to Term

• Current Assignee: Irving Rosenblum
• Original Assignee: Irving Rosenblum
• Inventors: Rosenblum, Irving
• Application Number:
  US04/323,483
• Time in Patent Office: 1,035 Days
• US Class Current: 315/82
• CPC Class Codes: B60Q 1/0023 the element being a sensor, e.g. distance sensor, camera
• CPC Class Codes: B60Q 1/1423 Automatic dimming circuits, i.e. switching between high beam and low beam due to change of ambient light or light level in road traffic
• CPC Class Codes: B60Q 2300/42 oncoming vehicle
• CPC Class Codes: H05B 39/06 Switching arrangements, e.g. from series operation to parallel operation

Claims

1. A SEALED-BEAM AUTOMOBILE HEADLIGHT LAMP CONTROL FOR CONTROLLING THE LIGHT OUTPUT OF SAID HEADLIGHT COMPRISING. (A) A PARABOLIC SHAPED CASING, (B) A SOURCE OF LIGHT CARRIED WITHIN AND ADJACENT THE REAR OF SAID CASING, (D) A CELL-LIKE LIGHT SENSITIVE CURRENT CARRYING RESISTIVE THE FRONTAL PART OF CASING, (D) A CELL-LIKE LIGHT SENSITIVE CURRENT CARRYING RESISTIVE ELEMENT STRUCTURE CARRIED BY THE GLASS MEMBER AND DISPOSED TO CHANGE ITS RESISTIVITY AND CORRESPONDING CURRENT IN RESPONSE TO LIGHT INTENSITY VARIATIONS EXTERNAL TO THE SAID CASING, (E) AMPLIFYING MEANS CARRIED BY THE SAID CASING AND EXTERNAL THERETO FOR RECEIVING THE SAID CURRENT CHANGES RESPONSIVE TO RESISTIVE VARIATIONS OF THE SAID CELL-LIKE STRUCTURE, (F) AND MEANS FOR RECEIVING SAID AMPLIFIED CURRENT CHANGES AND CONTROLLING THE SEAL-BEAM LIGHT OUTPUT.