Patents by Inventor Douglas A. Volk

Douglas A. Volk 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).

  • Capo systems
    Patent number: 7956263
    Abstract: A capo system for stringed instruments, in particular, guitars. A preferred embodiment of the system comprises a clamping assembly in combination with an under-string deflection limiter configured to limit deflection of the strings when clamped.
    Type: Grant
    Filed: January 18, 2010
    Date of Patent: June 7, 2011
    Inventors: Michael Douglas Volk, Jr., Kenneth Dale Suomala, Zachary B. Smith
  • Corrugated cardboard or chipboard carton forming machine
    Patent number: 5184998
    Abstract: A corrugated cardboard or chipboard carton forming machine including a first portion having four corner defining members which are adjustable to define the base of a carton to be constructed. The corrugated cardboard or chipboard carton forming machine also includes a fold generating portion having four adjustable fold generting members, each of which is adapted to pass over the corresponding corner defining member so as to fold a corrugated cardboard or chipboard blank, positioned on the first portion, over the corner defining members to thereby define the sides of the carton to be constructed.
    Type: Grant
    Filed: April 8, 1991
    Date of Patent: February 9, 1993
    Assignee: Volk Packaging Corporation
    Inventors: Kenneth H. Volk, Douglas A. Volk, Paul Voccia, William D. Lewis
  • Shoulder injury prevention device
    Patent number: D995666
    Type: Grant
    Filed: August 27, 2020
    Date of Patent: August 15, 2023
    Inventors: Rudolfo Juarez, Michael Douglas Volk, Jr.