Patents by Inventor David H. Jackson

David H. Jackson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11961495
    Abstract: Disclosed is an improved pivot or bridge plate that may be constructed originally or may be used to retrofit existing stringed instruments.
    Type: Grant
    Filed: May 27, 2022
    Date of Patent: April 16, 2024
    Inventor: David H. Jackson
  • Publication number: 20230410769
    Abstract: Disclosed is an improved pivot or bridge plate that may be constructed originally or may be used to retrofit existing stringed instruments.
    Type: Application
    Filed: May 27, 2022
    Publication date: December 21, 2023
    Inventor: David H. Jackson
  • Publication number: 20230197039
    Abstract: Disclosed is an improved vibrato device. The typical components of the disclosed device include, but are not limited to, a dual spring-loaded lever arm 10. The lever arm 10 is intended to sit separate and away from the instrument's strings 70 to allow for the user to manipulate the instrument's vibrato while playing by manually moving the lever arm 10 closer to or farther from the instrument. The lever arm 10 connects to the dual spring system 15; the dual spring system 15 houses the vibrato device's springs that allow vibrato manipulation and sits attached to the tremolo system's tailpiece 60, which anchors the vibrato device to the instrument, and the pivoting metal bar 40. The pivoting metal bar 40 is the strings' 70 anchor-point at the base of the instrument, and the bar 40 pivots in response to the lever arm 10 being raised or lowered. When the bar 40 pivots, it either lessens the strings' 70 tension when the lever arm 10 is lowered or increases the strings' 70 tension when the lever arm 10 is raised.
    Type: Application
    Filed: December 22, 2021
    Publication date: June 22, 2023
    Inventor: David H. Jackson
  • Patent number: 9508327
    Abstract: A pitch adjustment device for selectively adjusting the pitch of at least one of a plurality of strings on a stringed musical instrument. The device comprises a support frame configured to be mounted onto the stringed musical instrument. A string puller is rotatably coupled to the support frame. A string support is coupled to the string puller. The string support is adjustably positionable along the string puller to selectively position the string support on the string puller in alignment with each of the strings one at a time. The string support also has a string retainer for securing a string. A lever is coupled to the string puller such that pivoting the lever rotates the string puller and the string support relative to the frame about the first axis. The lever has a normal position and an actuated position in which the lever is pivoted to adjust the pitch.
    Type: Grant
    Filed: March 28, 2016
    Date of Patent: November 29, 2016
    Inventor: David H. Jackson
  • Publication number: 20160260420
    Abstract: A pitch adjustment device for selectively adjusting the pitch of at least one of a plurality of strings on a stringed musical instrument. The device comprises a support frame configured to be mounted onto the stringed musical instrument. A string puller is rotatably coupled to the support frame. A string support is coupled to the string puller. The string support is adjustably positionable along the string puller to selectively position the string support on the string puller in alignment with each of the strings one at a time. The string support also has a string retainer for securing a string. A lever is coupled to the string puller such that pivoting the lever rotates the string puller and the string support relative to the frame about the first axis. The lever has a normal position and an actuated position in which the lever is pivoted to adjust the pitch.
    Type: Application
    Filed: March 28, 2016
    Publication date: September 8, 2016
    Inventor: David H. Jackson
  • Patent number: 9424820
    Abstract: Disclosed are apparatus and related methods for changing the pitch of a stringed instrument, such as an standard, fixed-pitch, resonating or Dobro-type guitar, by attaching the stringed instrument onto a transformable stand comprising a foot pedal assembly and string pitch changing mechanism. In one embodiment, the apparatus and related methods involve affixing the strings from an existing guitar to an improved pitch-changing mechanism, such as disclosed string pitch changer housing, that does not require the deconstruction of the guitar body. Rather, the existing guitar is securely placed on its back on a transformable stand with the use of specially designed plates that hold the instrument with screws, securing the body of the instrument to the stand.
    Type: Grant
    Filed: July 15, 2014
    Date of Patent: August 23, 2016
    Inventor: David H. Jackson
  • Patent number: 9299323
    Abstract: A pitch adjustment device for selectively adjusting the pitch of multiple strings of a stringed musical instrument from the open pitch (normal unadjusted pitch) while playing using a single lever, wherein the tension and pitch of different strings can be adjusted by different and adjustable amounts for each adjustable string. The device comprises a support frame configured to be mounted onto the stringed musical instrument and a string puller rotatably coupled to the support frame and rotatable about a first axis. At least two pitch adjusters are attached to the string puller. Each pitch adjuster has a string support for securing a respective adjustable string and is adjustable to adjust the respective string support to a plurality of different radial positions from the first axis. A lever coupled is the string puller such that pivoting the lever rotates the string puller relative to the frame about the first axis.
    Type: Grant
    Filed: March 6, 2015
    Date of Patent: March 29, 2016
    Inventor: David H. Jackson
  • Publication number: 20160019871
    Abstract: Disclosed are apparatus and related methods for changing the pitch of a stringed instrument, such as an standard, fixed-pitch, resonating or Dobro-type guitar, by attaching the stringed instrument onto a transformable stand comprising a foot pedal assembly and string pitch changing mechanism. In one embodiment, the apparatus and related methods involve affixing the strings from an existing guitar to an improved pitch-changing mechanism, such as disclosed string pitch changer housing, that does not require the deconstruction of the guitar body. Rather, the existing guitar is securely placed on its back on a transformable stand with the use of specially designed plates that hold the instrument with screws, securing the body of the instrument to the stand.
    Type: Application
    Filed: July 15, 2014
    Publication date: January 21, 2016
    Inventor: David H. Jackson
  • Publication number: 20150201239
    Abstract: An upstream bandwidth conditioning device that, in one embodiment, can be inserted into a signal transmission line of a CATV system in or proximate to a premise of a user includes a forward path and a return path with the return path being divided into a supplier side portion and a user side portion. The device further includes a supplier side termination device selectively connected to the supplier side portion and a user side termination device selectively connected to the user side portion. A signal amplifier is selectively connected to the supplier side portion and the user side portion by at least one amplifier switch.
    Type: Application
    Filed: March 23, 2015
    Publication date: July 16, 2015
    Applicant: PPC Broadband, Inc.
    Inventor: David H. Jackson
  • Patent number: 8990881
    Abstract: An upstream bandwidth conditioning device that can be inserted into a signal transmission line of a CATV system in or proximate to a premise of a user includes a main signal path divided into a forward path and a return path, the return path being divided into supplier side portion and a user side portion. The device further includes a supplier side termination device selectively connected to the supplier side portion by a supplier side termination switch, and a user side termination device selectively connected to the user side portion by a user side termination switch. A signal amplifier is selectively connected to the supplier side portion and the user side portion by at least one amplifier switch, and a switch controller is configured to actuate each of the supplier side termination switch, the user side termination switch, and the amplifier switch from a first position to a second position.
    Type: Grant
    Filed: August 4, 2009
    Date of Patent: March 24, 2015
    Assignee: PPC Broadband, Inc.
    Inventor: David H. Jackson
  • Patent number: 8485846
    Abstract: A coaxial cable connector, comprising a post having a first end and a second end, the post configured to receive a coaxial cable having a protruding center conductor, a connector body attached to the post, a coupling member operably attached to the post, and a moveable sealing member disposed within the post, the moveable sealing member configured to move through the post to create a seal proximate the first end of the post is provided. Furthermore, associated methods are also provided.
    Type: Grant
    Filed: September 15, 2011
    Date of Patent: July 16, 2013
    Assignee: PPC Broadband, Inc.
    Inventor: David H. Jackson
  • Publication number: 20130072044
    Abstract: A coaxial cable connector, comprising a post having a first end and a second end, the post configured to receive a coaxial cable having a protruding center conductor, a connector body attached to the post, a coupling member operably attached to the post, and a moveable sealing member disposed within the post, the moveable sealing member configured to move through the post to create a seal proximate the first end of the post is provided. Furthermore, associated methods are also provided.
    Type: Application
    Filed: September 15, 2011
    Publication date: March 21, 2013
    Applicant: JOHN MEZZALINGUA ASSOCIATES, INC.
    Inventor: David H. JACKSON
  • Patent number: 8082570
    Abstract: Presented are method and apparatus embodiments to terminate an interruptible signal path when the interruptible signal path is unterminated. The apparatus can comprise a signal path from a supplier-side port thru a user-side port, a signal source arranged to provide a signal to the conductor; and a signal circuit arranged in the interruptible signal path. The apparatus can determine when the signal path is unterminated and, in that case, interrupt and terminate the signal path by putting a signal switching device in the appropriate state and/or sending signals from the signal path to a prescribed signal level connection point. When a user device is not connected or connected improperly, or the signals through the signal path are otherwise unterminated, the interruptible signal path can be interrupted and terminated. The method and apparatus embodiments can be used in various combinations with multiple signal paths having multiple signal branches.
    Type: Grant
    Filed: December 2, 2009
    Date of Patent: December 20, 2011
    Assignee: John Mezzalingua Associates, Inc.
    Inventors: Thomas A. Olson, David Kelma, Joseph Lai, Erdogan Alkan, David H. Jackson, Raymond W. Palinkas, Steven K. Shafer
  • Patent number: 8044287
    Abstract: A pitch adjustment device for selectively adjusting the pitch of the string(s) of a stringed musical instrument. Each string of the instrument is attached to a respective pitch adjustment device. Each pitch adjustment device includes a pivotable string puller wherein pivoting of the string puller adjusts the pitch on the string. A pulley is rotatably mounted to the string puller such that movement of the pulley causes the string puller to pivot. A cable is wrapped around the pulley and has a first side extending from one side of the pulley and a second side extending form the other side of the pulley. A plurality of actuators are operably coupled to the first and second sides of the cable. The actuators move the cable, which moves the pulley, which in turn pivots the string puller, thereby adjusting the pitch of the string.
    Type: Grant
    Filed: January 13, 2010
    Date of Patent: October 25, 2011
    Inventor: David H. Jackson
  • Publication number: 20110167980
    Abstract: A pitch adjustment device for selectively adjusting the pitch of the string(s) of a stringed musical instrument. Each string of the instrument is attached to a respective pitch adjustment device. Each pitch adjustment device comprises a pivotable string puller wherein pivoting of the string puller adjusts the pitch on the string. A pulley is rotatably mounted to the string puller such that movement of the pulley causes the string puller to pivot. A cable is wrapped around the pulley and has a first side extending from one side of the pulley and a second side extending form the other side of the pulley. A plurality of actuators are operably coupled to the first and second sides of the cable. The actuators move the cable, which moves the pulley, which in turn pivots the string puller, thereby adjusting the pitch of the string. Alternatively, the cable and pulley may be replaced by a mechanism of levers and pull rods.
    Type: Application
    Filed: January 13, 2010
    Publication date: July 14, 2011
    Inventor: David H. Jackson
  • Patent number: 7922528
    Abstract: A connector, and a connector system that implements the connector, that exhibits a value of characteristic impedance that is responsive to a tuning insulator. In one embodiment, the connector includes a connector body that defines a longitudinal axis, and a conductor that is disposed in the connector body so that it is aligned coaxially with the longitudinal axis. The connector also includes a tuning insulator that has a pre-determined effect so that, when the insulator is positioned on a portion of the conductor, the value of characteristic impedance of the connector changes from a first value to a second value.
    Type: Grant
    Filed: April 3, 2009
    Date of Patent: April 12, 2011
    Assignee: John Mezzalingua Associates, Inc.
    Inventor: David H. Jackson
  • Publication number: 20100255717
    Abstract: A connector, and a connector system that implements the connector, that exhibits a value of characteristic impedance that is responsive to a tuning insulator. In one embodiment, the connector includes a connector body that defines a longitudinal axis, and a conductor that is disposed in the connector body so that it is aligned coaxially with the longitudinal axis. The connector also includes a tuning insulator that has a pre-determined effect so that, when the insulator is positioned on a portion of the conductor, the value of characteristic impedance of the connector changes from a first value to a second value.
    Type: Application
    Filed: April 3, 2009
    Publication date: October 7, 2010
    Inventor: David H. Jackson
  • Publication number: 20100244980
    Abstract: Presented are method and apparatus embodiments to terminate an interruptible signal path when the interruptible signal path is unterminated. The apparatus can comprise a signal path from a supplier-side port thru a user-side port, a signal source arranged to provide a signal to the conductor; and a signal circuit arranged in the interruptible signal path. The apparatus can determine when the signal path is unterminated and, in that case, interrupt and terminate the signal path by putting a signal switching device in the appropriate state and/or sending signals from the signal path to a prescribed signal level connection point. When a user device is not connected or connected improperly, or the signals through the signal path are otherwise unterminated, the interruptible signal path can be interrupted and terminated. The method and apparatus embodiments can be used in various combinations with multiple signal paths having multiple signal branches.
    Type: Application
    Filed: December 2, 2009
    Publication date: September 30, 2010
    Inventors: Thomas A. Olson, David Kelma, Joseph Lai, Erdogan Alkan, David H. Jackson, Raymond W. Palinkas, Steven K. Shafer
  • Publication number: 20100251323
    Abstract: An upstream bandwidth conditioning device that can be inserted into a signal transmission line of a CATV system in or proximate to a premise of a user includes a main signal path divided into a forward path and a return path, the return path being divided into supplier side portion and a user side portion. The device further includes a supplier side termination device selectively connected to the supplier side portion by a supplier side termination switch, and a user side termination device selectively connected to the user side portion by a user side termination switch. A signal amplifier is selectively connected to the supplier side portion and the user side portion by at least one amplifier switch, and a switch controller is configured to actuate each of the supplier side termination switch, the user side termination switch, and the amplifier switch from a first position to a second position.
    Type: Application
    Filed: August 4, 2009
    Publication date: September 30, 2010
    Inventor: David H. Jackson
  • Patent number: D954141
    Type: Grant
    Filed: July 5, 2018
    Date of Patent: June 7, 2022
    Inventor: David H. Jackson