Patents Assigned to WELCH TUNING SYSTEMS, INC.
  • Tensioning system for vibrating membranes
    Patent number: 11081092
    Abstract: A cable and pulley or guide apparatus for accurately tuning and securing a tunable vibrating membrane on a cylindrical shell by means of a plurality of either fixed-angle pulley or guide assemblies not parallel to the top-bottom axis of the shell, or adjustable-angle pulley or guide assemblies not parallel to the top-bottom axis of the shell, built into or attached to purpose built hoops, attached to hoops with protruding flanges through holes or slots, or attached to a claw or hook apparatus which secures over the edge of annular hoops, through which a cable is laced and fed into the tensioning mechanism(s) to increase or decrease the tension on the cable, thus tensioning the vibrating membrane or heads against the shell, the angles of the pulley or guide assemblies adjustable to conform to the natural angle of the cable traversing the circumference of the shell.
    Type: Grant
    Filed: July 13, 2020
    Date of Patent: August 3, 2021
    Assignee: Welch Tuning Systems, Inc.
    Inventors: Samuel Justin Welch, Patrick B. Auell
  • Tensioning system for vibrating membranes
    Patent number: 10714062
    Abstract: A cable and pulley or guide apparatus for accurately tuning and securing a tunable vibrating membrane on a cylindrical shell by means of a plurality of either fixed-angle pulley or guide assemblies not parallel to the top-bottom axis of the shell, or adjustable-angle pulley or guide assemblies not parallel to the top-bottom axis of the shell, built into or attached to purpose built hoops, attached to hoops with protruding flanges through holes or slots, or attached to a claw or hook apparatus which secures over the edge of annular hoops, through which a cable is laced and fed into the tensioning mechanism(s) to increase or decrease the tension on the cable, thus tensioning the vibrating membrane or heads against the shell, the angles of the pulley or guide assemblies adjustable to conform to the natural angle of the cable traversing the circumference of the shell.
    Type: Grant
    Filed: September 4, 2018
    Date of Patent: July 14, 2020
    Assignee: WELCH TUNING SYSTEMS, INC.
    Inventors: Samuel Justin Welch, Patrick B. Auell
  • Drum claw
    Patent number: D875171
    Type: Grant
    Filed: September 17, 2018
    Date of Patent: February 11, 2020
    Assignee: WELCH TUNING SYSTEMS, INC.
    Inventors: Samuel Justin Welch, Patrick B. Auell
  • Drum hoop bracket
    Patent number: D875172
    Type: Grant
    Filed: September 17, 2018
    Date of Patent: February 11, 2020
    Assignee: WELCH TUNING SYSTEMS, INC.
    Inventors: Samuel Justin Welch, Patrick B. Auell
  • Drum head tensioning bracket
    Patent number: D889534
    Type: Grant
    Filed: September 17, 2018
    Date of Patent: July 7, 2020
    Assignee: WELCH TUNING SYSTEMS, INC.
    Inventors: Samuel Justin Welch, Patrick B. Auell