Patents by Inventor Richard Delvac

Richard Delvac 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).

  • Trial golf club for measuring loft angle and methods for using the same
    Patent number: 7517286
    Abstract: The invention is directed toward a trial golf club head and method for determining the optimal loft angle for any golf club, and in particular a hybrid-type golf club. The invention includes a trial golf club head having a face portion, a leading edge portion, a toe portion, a heel portion, a back portion having a trailing edge portion, and a sole portion. The sole portion contains a number of equally spaced graduated indicia, which are substantially parallel to one another and extend from the toe portion to the heel portion. The distance between the graduated indicia is approximately 3.75 centimeters (cm), which corresponds to an incremental loft angle of approximately 3 degrees. The sole portion has a radius of curvature of 71.67 mm, which extends from the leading edge of the face portion to the trailing edge of the back portion.
    Type: Grant
    Filed: October 6, 2006
    Date of Patent: April 14, 2009
    Assignee: Mizuno USA
    Inventors: Masao Nagai, Chris Voshall, Bill Price, David Llewellyn, Richard Delvac
  • TRIAL GOLF CLUB FOR MEASURING LOFT ANGLE AND METHODS FOR USING THE SAME
    Publication number: 20080085779
    Abstract: The invention is directed toward a trial golf club head and method for determining the optimal loft angle for any golf club, and in particular a hybrid-type golf club. The invention includes a trial golf club head having a face portion, a leading edge portion, a toe portion, a heel portion, a back portion having a trailing edge portion, and a sole portion. The sole portion contains a number of equally spaced graduated indicia, which are substantially parallel to one another and extend from the toe portion to the heel portion. The distance between the graduated indicia is approximately 3.75 centimeters (cm), which corresponds to an incremental loft angle of approximately 3 degrees. The sole portion has a radius of curvature of 71.67 mm, which extends from the leading edge of the face portion to the trailing edge of the back portion.
    Type: Application
    Filed: October 6, 2006
    Publication date: April 10, 2008
    Applicant: Mizuno USA, Inc.
    Inventors: Masao Nagai, Chris Voshall, Bill Price, David Llewellyn, Richard Delvac
  • Back design for a golf club iron head
    Patent number: D561285
    Type: Grant
    Filed: December 12, 2006
    Date of Patent: February 5, 2008
    Assignee: Mizuno USA
    Inventors: David Llewellyn, Damon Spencer, Chuck Couch, Richard Delvac
  • Golf club wood head
    Patent number: D564611
    Type: Grant
    Filed: December 12, 2006
    Date of Patent: March 18, 2008
    Assignee: Mizuno USA
    Inventors: David Llewellyn, Damon Spencer, Chuck Couch, Richard Delvac
  • Back design for an iron golf club head
    Patent number: D600765
    Type: Grant
    Filed: December 24, 2008
    Date of Patent: September 22, 2009
    Assignee: Mizuno USA, Inc.
    Inventors: David Llewellyn, Richard Delvac, Isamu Toshinari, Tomoaki Aoki
  • Back design for hybrid golf club heads
    Patent number: D620063
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: July 20, 2010
    Assignee: Mizuno USA, Inc.
    Inventors: David Llewellyn, Richard Delvac, Yasuyuki Ohta
  • Iron-type golf club
    Patent number: D660389
    Type: Grant
    Filed: June 3, 2011
    Date of Patent: May 22, 2012
    Assignee: Mizuno USA
    Inventors: Chris Voshall, Richard Delvac, Mamoru Saraie
  • Iron-type golf club
    Patent number: D664621
    Type: Grant
    Filed: June 3, 2011
    Date of Patent: July 31, 2012
    Assignee: Mizuno USA, Inc.
    Inventors: David Llewellyn, Richard Delvac, Kazuhiku Natori
  • Iron-type golf club
    Patent number: D672830
    Type: Grant
    Filed: December 6, 2011
    Date of Patent: December 18, 2012
    Assignee: Mizuno USA Inc.
    Inventors: Chris Voshall, Richard Delvac, Kazuhiko Natori
  • Iron-type golf club head
    Patent number: D682377
    Type: Grant
    Filed: May 30, 2012
    Date of Patent: May 14, 2013
    Assignee: Mizuno USA, Inc.
    Inventors: Chris Voshall, Richard Delvac
  • Iron-type golf club head
    Patent number: D682959
    Type: Grant
    Filed: June 8, 2012
    Date of Patent: May 21, 2013
    Assignee: Mizuno USA, Inc.
    Inventors: Mamoru Saraie, Isamu Toshinari, Tomo Aoki, Richard Delvac
  • Iron-type golf club head
    Patent number: D720415
    Type: Grant
    Filed: October 1, 2013
    Date of Patent: December 30, 2014
    Assignee: Mizuno USA, Inc.
    Inventors: Richard Delvac, Tomoaki Aoki, Kazuhiko Natori
  • Iron-type golf club head
    Patent number: D720416
    Type: Grant
    Filed: October 1, 2013
    Date of Patent: December 30, 2014
    Assignee: Mizuno USA, Inc.
    Inventors: Richard Delvac, David Llewellyn, Kazuhiko Natori
  • Iron-type golf club head
    Patent number: D720417
    Type: Grant
    Filed: October 1, 2013
    Date of Patent: December 30, 2014
    Assignee: Mizuno USA, Inc.
    Inventors: Richard Delvac, David Llewellyn