Automatic headlamp dimmer

• US 3,277,336 A
• Filed: 02/08/1962
• Issued: 10/04/1966
• Est. Priority Date: 02/08/1962
• Status: Expired due to Term

• Current Assignee: Miller, Charles W.
• Original Assignee: Miller, Charles W.
• Inventors: Miller, Charles W.
• Application Number:
  US04/171,850
• Time in Patent Office: 1,699 Days
• US Class Current: 315/83
• 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 2300/052 Switching delay, i.e. the beam is not switched or changed instantaneously upon occurrence of a condition change
• CPC Class Codes: B60Q 2300/314 Ambient light
• 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