Patents by Inventor David Wellman

David Wellman 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: 20130068142
    Abstract: The inventive concept is a picnic table for use on a beach or any desired location. The table is constructed of a molded plastic in a round configuration, although any configuration can be used. The table is supported by central support stake that is being pushed into the ground to stabilize the same. The stake is removably attached to a circular flange under the table in its center. The central support is constructed as a round stake which is made of two telescoping sections. The sections can each be stored on the underside of the table in respective clamps.
    Type: Application
    Filed: September 16, 2011
    Publication date: March 21, 2013
    Inventors: David Wellman, Victoria Dellanos, Susanne Veronika Buschbeck Baselli, Jose Abelardo Calmet Cruzado
  • Publication number: 20070220706
    Abstract: This invention relates to a spring balance, and in particular to a spring balance for use with a sliding sash window. The invention provides a spring balance comprising a top assembly which is securable to a frame member, a bottom assembly which is securable to a sliding sash, a tension spring connected to the top assembly and to the bottom assembly, a torsion spring, a spiral rod, and a follower bush interconnecting the spiral rod and the torsion spring. The spring balance is adjustable at the top assembly, and includes a limit mechanism for limiting the range of adjustment, the limit mechanism preventing over-adjustment of the spring balance.
    Type: Application
    Filed: March 24, 2006
    Publication date: September 27, 2007
    Inventors: David Wellman, Peter Harrison
  • Patent number: 4454929
    Abstract: A folding sawbuck is disclosed that combines a cross frame design with integral vertical members, allowing a large quantity of logs or other wood to be cut into firewood at one time. The use of independant support assemblies, secure by horizontal members, provides an obstruction free cutting path that gives fast and safe cuts under all types of conditions, with all types of wood. The sawbuck is designed to be folded compactly for storage, and then opened for use with a minimum of difficulty. Two different embodiments of the invention are disclosed, each design using a different means for forming the "X"-frame portion of the main support assemblies. The invention is designed as a kit, with all parts pre-cut for easy assembly, or it can be manufactured fully assembled. The sawbuck can be constructed from either wood, metal or plastics.
    Type: Grant
    Filed: June 27, 1983
    Date of Patent: June 19, 1984
    Inventor: David Wellman