Patents by Inventor Darrell Johnston

Darrell Johnston 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: 8686265
    Abstract: Described is a drum foot pedal with a tension adjuster for adjusting the tension of the spring and corresponding return action of a beater. The device includes a foot pedal and a beater bracket operably connected with the foot pedal such that the beater bracket is actuated in response to force applied to the foot pedal. A rocker component is attached with the beater bracket such that rotational motion of the beater bracket causes a rotational motion of the rocker component. A swivel component is connected with the rocker component. Further, a spring is attached with the swivel component for biasing the beater bracket to force a return action of a beater when force is removed from the foot pedal. Finally, a spring tension adjuster connected with and between the swivel component and spring, the spring tension adjuster operable for allowing a user to selectively adjust tension of the spring.
    Type: Grant
    Filed: April 2, 2012
    Date of Patent: April 1, 2014
    Inventor: Darrell Johnston
  • Patent number: 8642868
    Abstract: Described is a bass drum foot pedal having a variable drive lever linkage with variable arc ratios connecting the foot pedal to a beater bracket. The beater bracket is formed with a mounting surface that tips a beater shaft forward to create a forward beater angle that maximizes the beater impact against a bass drum.
    Type: Grant
    Filed: May 31, 2013
    Date of Patent: February 4, 2014
    Assignee: Axis Percussion, Inc.
    Inventors: Charles Blashaw, Darrell Johnston
  • Patent number: 8455746
    Abstract: Described is a bass drum foot pedal having a variable drive lever linkage with variable arc ratios connecting the foot pedal to a beater bracket. The beater bracket is formed with a mounting surface that tips a beater shaft forward to create a forward beater angle that maximizes the beater impact against a bass drum.
    Type: Grant
    Filed: December 8, 2011
    Date of Patent: June 4, 2013
    Assignee: Axis Percussion, Inc.
    Inventors: Darrell Johnston, Charles Blashaw
  • Publication number: 20130000460
    Abstract: Described is a mounting system for acoustic musical instruments. The mounting system includes a central hub with three suspension arms extending thereform. Each extension arm having a proximal end connected with the central hub and a distal end having a gripper arm assembly. A lower support cushion and a gripper pad are connected with each gripper arm assembly, both of which are formed of neoprene. Thus, a user can position a drum hoop on the lower support cushions and use the gripper pads to secure the drum therebetween. In doing so, the mounting system provides a secure, rigid grip on the instrument for performance, while ensuring the instrument is undamaged and fits all types of counter hoops in popular use. Additionally, due to the neoprene, the mounting system allows the acoustic instrument to resonate (speak) in a more unrestricted manner with respect to the prior art.
    Type: Application
    Filed: June 28, 2012
    Publication date: January 3, 2013
    Inventor: Darrell Johnston
  • Publication number: 20120198984
    Abstract: Described is a drum foot pedal with a tension adjuster for adjusting the tension of the spring and corresponding return action of a beater. The device includes a foot pedal and a beater bracket operably connected with the foot pedal such that the beater bracket is actuated in response to force applied to the foot pedal. A rocker component is attached with the beater bracket such that rotational motion of the beater bracket causes a rotational motion of the rocker component. A swivel component is connected with the rocker component. Further, a spring is attached with the swivel component for biasing the beater bracket to force a return action of a beater when force is removed from the foot pedal. Finally, a spring tension adjuster connected with and between the swivel component and spring, the spring tension adjuster operable for allowing a user to selectively adjust tension of the spring.
    Type: Application
    Filed: April 2, 2012
    Publication date: August 9, 2012
    Inventor: Darrell Johnston
  • Publication number: 20120144976
    Abstract: Described is a bass drum foot pedal having a variable drive lever linkage with variable arc ratios connecting the foot pedal to a beater bracket. The beater bracket is formed with a mounting surface that tips a beater shaft forward to create a forward beater angle that maximizes the beater impact against a bass drum.
    Type: Application
    Filed: December 8, 2011
    Publication date: June 14, 2012
    Inventors: Darrell Johnston, Charles Blashaw