The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 29, 2001
Filed:
Apr. 28, 1999
Kevin J. Pierce, Grand Forks, ND (US);
Michael J. Pierce, Grand Forks, ND (US);
Other;
Abstract
The invention comprises a mobile dethatching or ground cutting apparatus having a frame with front and rear wheels and a towing arm mounted to the frame for towing behind a tractor. A rotary drum is rotatably mounted to the frame and a hydraulic motor is mounted to the frame for powering the rotation of the drum. The front wheels are adjustable in height for adjusting the weight of the drum relative to the ground. The drum has a plurality of slots and peripheral rods are mounted about the circumference of the drum with the drum having plurality of slots at intervals about its circumference rod receiving. A plurality of harrow teeth have coil spring portions slidably and detachably mounted to the rods of the drum and a projecting portion detachably received in the slots of the drum so as to project the harrow teeth outward from the drum for engaging the ground as the device is moved forward along the ground with the drum power rotated for the harrow teeth to cut a path in the ground with the drum and teeth adjustable by the front wheels for varying the depth of the teeth or thinning or cutting a strip or path in the ground.