Patents by Inventor Robert Knizner

Robert Knizner 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: 20030226929
    Abstract: The holding device comprises a clamp body attached to a pair of support arms. Each support arm has a round lug near its upper surface that engages a slot in the inner cavity of the trimmer line spool. The holding device is held on the shaft of a string trimmer by a pair of resilient clamp arms.
    Type: Application
    Filed: June 6, 2002
    Publication date: December 11, 2003
    Inventor: Robert Knizner
  • Publication number: 20030226867
    Abstract: The transporting device consists of a trailer hitch receiver adaptor attached near the center of the front cross member. A pair of rails is attached at right angles to the front cross member for each lawn mower to be transported. A front wheel retainer assembly is located in front of each lawn mower, and serves to retain the lawn mower on the transporter. The front wheel retainer assembly has a tension spring that serves to pull the retainer assembly into the open position if a lawnmower is not being retained and into the closed position if a lawn mower is retained. A flat spring located in front of each front lawn mower wheel removes any looseness between the transporting device and the lawn mower, while at the same time helping to hold the front wheel retainer assembly in the closed position.
    Type: Application
    Filed: June 6, 2002
    Publication date: December 11, 2003
    Inventor: Robert Knizner
  • Publication number: 20030052218
    Abstract: A device to hold a spare spool of trimmer line on a string trimmer while the trimmer is in use. The device has a clamp on its frame's lower surface (22) to attach it to the string trimmer's shaft, and elements (44A, 44B) on its frame's upper surface (20) to retain the spare spool of trimmer line. These elements use the spool's notched indexing lugs (34A, 34B) and spring (42) to retain the spare spool. The spare spool is placed into the device by compressing the spool's spring (42) and engaging the spool's notched indexing lugs (34A, 34B) onto pins (28A, 28B) located on curved slotted elements (24A, 25B) located on the upper surface of the device's frame (20).
    Type: Application
    Filed: July 17, 2001
    Publication date: March 20, 2003
    Inventor: Robert Knizner