Patents by Inventor Mathieu J. Grumberg

Mathieu J. Grumberg 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: 6510677
    Abstract: An adjustable mowing and trimming apparatus is presented having a wheel adjust mechanism and trimming assembly. The apparatus includes a housing to which at least two wheels are rotatably mounted at opposite sides of the wheel adjust mechanism. The wheel adjust mechanism includes a pair of wheel brackets having a C-shaped configuration, each of which pivotally attaches to the housing and is provided with an outwardly extending axle for supporting a wheel. A tie rod attaches at respective opposite ends to the wheel brackets. A slotted bracket is attached to the tie rod and movable in response to a movable arm to reorient the wheels on either side of the housing. The trimming assembly is mounted at a front portion of the housing and includes a spindle assembly rotatably attached to a shaft, which is fixedly attached to the housing.
    Type: Grant
    Filed: November 17, 2000
    Date of Patent: January 28, 2003
    Assignee: MTD Products Inc
    Inventors: Mathieu J. Grumberg, Charles R. Elder
  • Patent number: 5862655
    Abstract: An adjustable mowing and trimming apparatus is presented which employs a unique wheel adjust mechanism and trimming assembly. The apparatus includes a frame to which at least two wheels are rotatably mounted at opposite sides of an adjustable linkage which is loosely coupled to the frame through a moveable pivot assembly. A mechanism is provided for manually adjusting the moveable pivot assembly to actuate the adjustable linkage and thereby reorient the wheels on either side of the frame. The trimming assembly is mounted at a front portion of the frame and includes a spindle head fixedly mounted to a spindle depending from the frame so as to rotate with the spindle. The spindle head substantially covers the spindle and is sized such that a distal end thereof rests proximate to ground when the trimming apparatus is operational. A trimmer head is adjustably clamped about the spindle head so as to rotate therewith.
    Type: Grant
    Filed: October 3, 1996
    Date of Patent: January 26, 1999
    Assignee: Garden Way Incorporated
    Inventors: Rolando Altamirano, James M. D'Aleo, Charles R. Elder, Mathieu J. Grumberg, Bruce Roberts