Patents by Inventor Frank Drayton Williams

Frank Drayton Williams 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).

  • Publication number: 20090178248
    Abstract: The invention provides a clamp assembly for holding a set of seal elements to a rail, the assembly including an arm sub-assembly and a locking mechanism. The arm sub-assembly includes first and second arms which are pivotally attached by a pin. The first arm includes an elongate first link portion and a first engagement portion extending substantially transversely to the first link portion. The first engagement portion includes a first contact part which is adapted to engage a selected one of the set of seal elements. In addition, the second arm includes a second link portion and a second engagement portion extending substantially transversely to the second link portion. Also, the second engagement portion includes a second contact part adapted to engage another one of the set of seal elements.
    Type: Application
    Filed: January 16, 2009
    Publication date: July 16, 2009
    Applicant: PERFORMANCE POLYMERS INC.
    Inventors: Andrei BUTA, Frank Drayton WILLIAMS
  • Patent number: 6877671
    Abstract: The roadway at a road-rail crossing comprises rows of extruded rubber strips. The strips have a tongue-and-groove type of edge connection, which constrain the strips such that if one strip bounces the adjacent strips bounce too. Locking-strips fit between primary-strips, and have latches, which snap into place upon the locking-strips being driven downwards, from above.
    Type: Grant
    Filed: October 16, 2002
    Date of Patent: April 12, 2005
    Assignee: Performance Polymers Inc.
    Inventors: Dominicus Bruyn, Frank Drayton Williams, Bill Wei Shiu Chien
  • Publication number: 20030085292
    Abstract: The roadway at a road-rail crossing comprises rows of extruded rubber strips. The strips have a tongue-and-groove type of edge connection, which constrain the strips such that if one strip bounces the adjacent strips bounce too. Locking-strips fit between primary-strips, and have latches, which snap into place upon the locking-strips being driven downwards, from above.
    Type: Application
    Filed: October 16, 2002
    Publication date: May 8, 2003
    Inventors: Dominicus Bruyn, Frank Drayton Williams, Bill Wei Shiu Chien
  • Patent number: 5899379
    Abstract: At a road/rail crossing, rubber inserts are located alongside the rails, between the rail and the asphalt of the road. The insert has a resilient nose, which engages the under-face of the head of the rail. The insert does not touch the web of the rail, but rather the insert is wedged between the head and the flange of the rail. This engagement assists in locking the insert to the rail, by self-locking-taper action.
    Type: Grant
    Filed: October 27, 1997
    Date of Patent: May 4, 1999
    Assignee: Performance Polymers Inc.
    Inventors: Dominicus Bruyn, Frank Drayton Williams, Bill Wei Shiu Chien