Patents by Inventor David J. Ressler

David J. Ressler 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: 6230598
    Abstract: The present invention pertains to an automatic cutting device which can be utilized for cutting woody plant material (e.g., stem, stalk). The subject device can comprise a housing having a fixed blade attached thereto. A movable blade, pivotally connected to the fixed blade, can be attached to an activating device for movement. The activating device is preferably a pushrod activated by an electrical solenoid which produces the force necessary to push the movable blade against the fixed blade in a cutting action. A spring can be used to return the movable blade to the open position between cuts. The solenoid can be activated by a switching means which is triggered by a lever device located in close proximity to the cutting portion of the blades. In a specific embodiment, as the stem is lowered, the lever is depressed which triggers the switch to activate the solenoid. The solenoid forces the push rod to push the movable blade against the fixed blade in a single cutting action to cut the stem.
    Type: Grant
    Filed: January 30, 1998
    Date of Patent: May 15, 2001
    Inventor: David J. Ressler