Patents Represented by Law Firm Sturm & Baker
  • Patent number: 4727585
    Abstract: Apparatus for adjustably varying the tension intermediate the downwardly depending ends of a spring headband in a headset includes a longitudinally extending spring member having an arcuate shape and radius less than the intermediate portion of the headband, that is disposed on the top of the intermediate portion of the headband and stationarily connected to the headband at one end, a tension adjusting slider is disposed around the headband and the spring member for longitudinal movement so that the tension intermediate the lower ends of the headband is varied as the slider is repositioned.
    Type: Grant
    Filed: November 24, 1986
    Date of Patent: February 23, 1988
    Assignee: Telex Communications, Inc.
    Inventor: Dean W. Flygstad
  • Patent number: 4726068
    Abstract: A boom mounted microphone includes a boom mounted plug and connectors for connection to and supporting a microphone disposed in a two part housing that is divided into a socket for receiving said plug for locking physical support as well as conductive electrical connection, and a plurality of consecutive, adjacently disposed compartments, including at least a pair disposed parallel to the longitudinal axis, opening into the socket and containing conductive sockets for conductively receiving the connectors on the plug, a compartment for receiving a signal processing board and a compartment for mounting a microphone, the side walls, socket and compartments formed by complementary disposed walls of each housing and includes screw threaded fastening means extending through one wall of one part of the housing into the conductive sockets and in engagement with the connectors on the plug.
    Type: Grant
    Filed: November 24, 1986
    Date of Patent: February 16, 1988
    Assignee: Telex Communications, Inc.
    Inventor: Christopher D. Wiegel
  • Patent number: 4723585
    Abstract: A tire tread is comprised of a plurality of rectangular tread block units disposed in parallel circumferential columns and transversely extending rows substantially perpendicular thereto and which include diagonal grooves extending from opposed corners and which are in axial alignment to provide a plurality of diagonally-transversely extending grooves and including a sipe extending into either end of the rectangular units from the transverse grooves.
    Type: Grant
    Filed: June 15, 1987
    Date of Patent: February 9, 1988
    Inventor: Januarius L. Mechtel
  • Patent number: 4718099
    Abstract: A hearing aid having signal compression characteristics that adapt to the environment of the sound field in which it is operative in which an automatic gain control signal processor is responsive to the magnitude, duration and frequency of the signals in a sound field to control a compression amplifier so that the gain thereof is proportional to said signals.
    Type: Grant
    Filed: January 29, 1986
    Date of Patent: January 5, 1988
    Assignee: Telex Communications, Inc.
    Inventor: David A. Hotvet
  • Patent number: 4706647
    Abstract: An air flow damper-director control for admitting air to an enclosed fireplace cavity in fireplaces having a sealing enclosure over the cavity opening including a horizontally distributed aperture adjacent the bottom portion of a sealing enclosure and a vane rotatable about the lower extremity of the distributed aperture between a sealing closed position over the aperture and a plurality of positions permitting a variable air flow through the apertures while causing a lesser or greater proportion of the air flow to flow upwardly toward and along the inside of the enclosure or the interior of the fireplace cavity.
    Type: Grant
    Filed: May 14, 1986
    Date of Patent: November 17, 1987
    Inventor: Donald W. Wilkening
  • Patent number: D286733
    Type: Grant
    Filed: January 20, 1984
    Date of Patent: November 18, 1986
    Inventor: William R. Dahlke
  • Patent number: D286933
    Type: Grant
    Filed: February 23, 1984
    Date of Patent: November 25, 1986
    Inventor: Kenneth G. Lymburner