Patents Assigned to Unicon Incorporated
  • Compatibility circuit for telephone headset
    Patent number: 6408069
    Abstract: A selectable impedance matching circuit for matching the impedance of a telephone handset adapted for either a carbon microphone input or an electronic microphone input to the impedance of a headset microphone. The selectable impedance matching circuit includes a switch for connecting the headset microphone to the handset microphone input via a full wave bridge circuit, or connecting the headset microphone to the handset microphone input via an isolation transformer and resistor load.
    Type: Grant
    Filed: October 29, 1998
    Date of Patent: June 18, 2002
    Assignee: Unicon Incorporated
    Inventor: Jeffrey A. Furlong
  • Headset adapter for microphone and earpiece
    Patent number: 6154539
    Abstract: A microphone and earphone headset assembly, including an earphone housing having a microphone and boom pivotally attached, the earphone housing having a peripheral groove. An earpiece adapter includes a C-shaped clamp for fitting into the peripheral groove, and the adapter also has a mounting hole for attachment to a headset band or to an earpiece.
    Type: Grant
    Filed: September 30, 1998
    Date of Patent: November 28, 2000
    Assignee: Unicon, Incorporated
    Inventor: Matthew Pitel
  • Telephone headset ear loop
    Patent number: D420010
    Type: Grant
    Filed: January 29, 1999
    Date of Patent: February 1, 2000
    Assignee: Unicon Incorporated
    Inventor: Matthew Pitel
  • Telephone headset ear hook
    Patent number: D421755
    Type: Grant
    Filed: February 17, 1999
    Date of Patent: March 21, 2000
    Assignee: Unicon Incorporated
    Inventor: Matthew Pitel