Patents by Inventor Robert R. Yeager

Robert R. Yeager 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: 4261593
    Abstract: A relatively compact and lightweight planting and fertilizing apparatus is attached to a small garden tractor by a universal hitch which restricts lateral movement between the two. The apparatus is spring biased downwardly to assure film contact with the ground, and can be raised above the ground by a single lever. The lever carries the biasing spring, and cams lifting bearings on the lever against a lifting plate on the apparatus. The fertilizer is fed by an axially adjustable feed gear rotated by a ground engaging wheel on the apparatus. The feed gear is biased by an adjusting spring against a threaded adjusting knob which sets the axial position of the feed gear.
    Type: Grant
    Filed: December 20, 1979
    Date of Patent: April 14, 1981
    Assignee: Lambert Corporation
    Inventor: Robert R. Yeager
  • Patent number: 4239086
    Abstract: A relatively compact and lightweight planting and fertilizing apparatus is attached to a small garden tractor by a universal hitch which restricts lateral movement between the two. The apparatus is spring biased downwardly to assure firm contact with the ground, and can be raised above the ground by a single lever. The lever carries the biasing spring, and cams lifting bearings on the lever against a lifting plate on the apparatus. The fertilizer is fed by an axially adjustable feed gear rotated by a ground engaging wheel on the apparatus. The feed gear is biased by an adjusting spring against a threaded adjusting knob which sets the axial position of the feed gear.
    Type: Grant
    Filed: September 13, 1978
    Date of Patent: December 16, 1980
    Assignee: Lambert Corporation
    Inventor: Robert R. Yeager
  • Patent number: 4165697
    Abstract: A hand held seed planter includes a tubular body and a pair of ground-opening jaws pivotally carried on one end of the body. A seed hopper is slidably mounted on the other end of the body and a ground engaging collar is carried on the one end, surrounding the jaws and mounted for sliding movement on the tubular body. When the soil collar is placed on the ground and a downward force applied to the handle attached to the hopper, the jaws are moved downward into the soil and create a seed opening in the soil. Adjustable pins on the collar control the depth of the opening. At the same time, a seed scoop recess, carrying a seed, is brought into alignment with an opening in a tube which extends through the hopper. A seed is then transferred into the tube, passing through the tubular body and between the jaws, to be planted in the seed opening.
    Type: Grant
    Filed: May 30, 1978
    Date of Patent: August 28, 1979
    Assignee: Lambert Corporation
    Inventors: Robert R. Yeager, Ronald E. Shaner
  • 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: 4131221
    Abstract: A relatively compact and lightweight planting and fertilizing apparatus is attached to a small garden tractor by a universal hitch which restricts lateral movement between the two. The apparatus is spring biased downwardly to assure firm contact with the ground, and can be raised above the ground by a single lever. The lever carries the biasing spring, and cams lifting bearings on the lever against a lifting plate on the apparatus. The fertilizer is fed by an axially adjustable feed gear rotated by a ground engaging wheel on the apparatus. The feed gear is biased by an adjusting spring against a threaded adjusting knob which sets the axial position of the feed gear.
    Type: Grant
    Filed: August 13, 1976
    Date of Patent: December 26, 1978
    Assignee: Lambert Corporation
    Inventor: 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