×

Microprocessor based automatically dimmable eye protection device with interruption prevention

  • US 7,232,988 B2
  • Filed: 05/05/2005
  • Issued: 06/19/2007
  • Est. Priority Date: 05/05/2001
  • Status: Expired due to Term
First Claim
Patent Images

1. An auto darkening eye protection device comprising:

  • a shutter assembly adjustable between a clear state and a dark state;

    a control circuit for controlling the shutter assembly, the control circuitincluding a microcontroller and a driver; and

    a protective casing disposed generally about the microcontroller and the driver of the control circuit to substantially prevent electromagnetic fields from interfering with the operation of the control circuit.

View all claims
  • 10 Assignments
Timeline View
Assignment View
    ×
    ×