Patents Assigned to Unicon Incorporated
  • Low current signal compression circuit
    Patent number: 6625277
    Abstract: A low voltage and low current compression circuit for connection between a telephone receiver and a telephone headset earphone, the circuit having an operational amplifier with variable gain, the gain being determined by the output signal level and by the presence or absence of transient signal spikes generated by the telephone receiver. The amplifier is connected to a voltage clipper circuit and a JFET feedback device, wherein the JFET operates as a variable resistance to control the signal feedback.
    Type: Grant
    Filed: March 17, 1999
    Date of Patent: September 23, 2003
    Assignee: Unicon Incorporates
    Inventor: Jeffrey A. Furlong
  • 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