Patents by Inventor Curtis D. Kelsay

Curtis D. Kelsay 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).

  • Taping knife handle
    Patent number: 5615445
    Abstract: A taping knife which includes a blade with an elongated handle secured to the blade. The plastic handle includes a durable inner member and a grippable outer core. The hollow inner member is formed from adjoining member halves which have an inner structural support network of ribs. The handle component parts sealably interlock and are secured together upon formation of the outer grippable core whose material flows into certain ribbed network compartments and secures the interlocking parts together.
    Type: Grant
    Filed: December 27, 1994
    Date of Patent: April 1, 1997
    Assignee: Marshalltown Trowel Company
    Inventors: Curtis D. Kelsay, Alan J. Ness
  • Finishing trowel handle
    Patent number: 5522111
    Abstract: A finishing trowel comprised of a blade, a mounting and a handle, wherein the handle is hollow and has a square mounting hole for receiving a square mounting surface. A plastic handle is comprised of a durable inner core material and a grippable outer member. The handle's inner core includes deformable ribs which axially line the mounting hole and provide a secure, lash-free fit onto the mounting surface over a broader range of manufacturing tolerances for the parts. The handle also includes an endcap which cuts into and seals the endcap against an outer grippable material upon tightening of a flanged nut onto the mounting. A lip extends from the handle and encompasses a portion of the mounting to facilitate increased torque transfer from the handle to the mounting and blade. The replaceable handle can also be formed of other grippable materials such as wood.
    Type: Grant
    Filed: December 8, 1994
    Date of Patent: June 4, 1996
    Assignee: Marshalltown Trowel Company
    Inventors: Curtis D. Kelsay, Duane W. Woltjen, Kent D. Williams
  • Plastic molded trowel handle having fingerguard and palm grip
    Patent number: 5446941
    Abstract: A trowel handle is injection molded from two separate types of plastic. An inner core is molded together with a finger guard from a plastic providing a smooth surface of a first coefficient of friction with the user's hand. The finger guard covers the metal tang of the trowel and protects the user's forefinger and thumb during troweling. An outergrip is molded from a thermoplastic rubber providing a soft, rubber-like surface of a second coefficient of friction with the user's hand.
    Type: Grant
    Filed: July 11, 1994
    Date of Patent: September 5, 1995
    Assignee: Marshalltown Trowel Company
    Inventor: Curtis D. Kelsay
  • Plastic molded trowel handle having fingerguard and palm grip
    Patent number: 5327612
    Abstract: A trowel handle is injection molded from two separate types of plastic. An inner core is molded together with a finger guard from a plastic providing a smooth surface of a first coefficient of friction with the user's hand. The finger guard covers the metal tang of the trowel and protects the user's forefinger and thumb during troweling. An outergrip is molded from a thermoplastic rubber providing a soft, rubber-like surface of a second coefficient of friction with the user's hand.
    Type: Grant
    Filed: March 2, 1993
    Date of Patent: July 12, 1994
    Assignee: Marshalltown Trowel Company
    Inventor: Curtis D. Kelsay