Patents by Inventor Walter F. Ruhl

Walter F. Ruhl 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).

  • Patent number: 4796322
    Abstract: A rear dumping brush-type lawn sweeper for attachment to a garden tractor includes a hamper assembly which is mounted on a support frame for pivotal movement. The support frame is carried on the main frame of the brush housing. The hamper assembly carries an open top hamper bag. The top of the bag is normally closed by a mesh-type folding wind apron. A forward portion of the apron is attached to the hamper assembly, while a rear portion of the apron is attached to a rear cross member forming part of the hamper support frame. The wind apron, at its rear terminal end, forms a closure with the rear lip of the hamper bag in the normal running position. When the hamper is rotated rearwardly on the support frame for dumping, the wind screen folds on itself and exposes a rear dumping opening with the rear hamper bag lip.
    Type: Grant
    Filed: April 4, 1988
    Date of Patent: January 10, 1989
    Assignee: Lambert Corporation
    Inventors: Jeffrey A. Steed, Walter F. Ruhl, James M. Weaver
  • Patent number: 4133389
    Abstract: A hand-held, power driven cultivator includes a housing and cultivator blades which rotate about axes oblique to the vertical axis of the cultivator, the blades extending generally in planes which converge beneath the housing. The cultivator is driven by an electrical motor and has a power train which includes a speed reduction gear arrangement. The cultivator blades may overlap slightly as they rotate and may be formed of hardened metal or plastic. The housing of the cultivator is provided with a skirt which extends outwardly and downwardly about the sides and rear of the housing. The skirt is provided with lower depending side shield portions and a rear rake or spreading portion. The rear rake or spreading portion is formed with notches or teeth to smooth and spread cultivated dirt.
    Type: Grant
    Filed: June 29, 1977
    Date of Patent: January 9, 1979
    Assignee: Lambert Corporation
    Inventors: Walter F. Ruhl, Robert R. Yeager
  • Patent number: D248654
    Type: Grant
    Filed: June 3, 1977
    Date of Patent: July 25, 1978
    Assignee: Lambert Corporation
    Inventors: Walter F. Ruhl, Robert R. Yeager
  • Patent number: D304103
    Type: Grant
    Filed: October 19, 1987
    Date of Patent: October 17, 1989
    Assignee: Lambert Corporation
    Inventors: Walter F. Ruhl, Jeffrey A. Steed, James M. Weaver