Harvesters – Motorized harvester – Including motorized vehicle causing transit of harvester
Reexamination Certificate
1999-10-13
2001-05-22
Pezzuto, Robert E. (Department: 3671)
Harvesters
Motorized harvester
Including motorized vehicle causing transit of harvester
C056S015400
Reexamination Certificate
active
06233912
ABSTRACT:
BACKGROUND OF INVENTION
1. Field of Invention
This invention relates to machinery and particularly to wheeled machinery that can be shifted from side to side during operation.
Machinery, particularly machinery that moves over the ground quite often cannot accomplish its intended mission because wheels or other support means form obstructions.
An example of the above are grass cutting implements such as lawnmowers that have wheels mounted on all four corners of mower deck. To get the mower as close as possible to obstructions such as trees, fences, buildings, and the like, the operator usually pushes down on the lawnmower handle, raising the front wheel off the ground so the lawnmower can be more easily maneuvered to a point adjacent the obstruction. Even as a result of this and other maneuvering motions, it is still difficult to achieve the desired location due to such things as wheels blocking the obstruction.
2. Concise Explanation of Prior Art There is no known prior art pertinent to the present invention.
BRIEF DESCRIPTION OF INVENTION
After much research and study into the above mentioned problems, the present invention has been developed to provide a system for shifting a mounted means such as a mower deck back and forth laterally.
The above is accomplished by mounting a means such as rollers on a wheeled axle with a handle connected to the deck in such a way that by rotating the handle to the left, the deck shifts to the left, and rotating the handle to the right, the deck shifts to the right, while holding the handle level, the deck remains centered relative to the wheels.
If the shiftable deck is a lawnmower deck, a front castor wheel is mounted to carry the front of the mower so that by simply rotating the T-handle, the mower deck can be moved left and right well past the track of the axle wheels allowing the deck to be “steered” around bushes, shrubs, trees, sides of buildings, fences and other obstructions without having to manually maneuver the deck as is required by fixed wheel mower decks.
The castor wheel on the front of the deck with the rear of the deck being mounted on rollers for side-to-side lateral movement relative to the rear wheels allows superb maneuverability. A rotatable handle is mounted on the deck with a rocker arm fixedly connected thereto. This rocker arm mounts to one end of a linkage with the other end being mounted on the axle. Thus, when the T-handle is rotated, the rocker arm moves back and forth causing the deck to move back and forth therewith to efficiently shift the deck in a lateral motion. When the T-handle is level, the deck is centered on the axle for more or less conventional operation.
In view of the above, it is an object of the present invention to provide a means for laterally pivoting a deck means relative to a fixed member.
Another object of the present invention is to provide a means for laterally shifting a wheel mounted deck relative to a fixed axle.
Another object of the present invention is to provide a means for shifting a mower deck laterally from side-to-side beyond the track of a pair of supporting wheels.
Another object of the present invention is to provide an improved mower-type deck that allows for closer trim work than is possible with a conventional mower.
Another object of the present invention is to provide a standard mower deck with trim capabilities without requiring additional auxiliary cutting systems.
Another object of the present invention is to provide a laterally shiftable mower deck that is operated by twisting a T-handle.
Other objects and advantages of the present invention will become apparent and obvious from a study of the following description and the accompanying drawings which are merely illustrative of such invention.
REFERENCES:
patent: 1446682 (1923-02-01), Witter
patent: 1575618 (1926-03-01), Burlingame
patent: 1974410 (1934-09-01), Caughery
patent: 2421558 (1947-06-01), Goldsmith
patent: 2913058 (1959-11-01), Smith et al.
patent: 2989134 (1961-06-01), Kamulunkin et al.
patent: 3199278 (1965-08-01), Dye
patent: 4182100 (1980-01-01), Letter
patent: 4910893 (1990-03-01), Asay
patent: 5613354 (1997-03-01), Foster
Kovács Arpád Fáb
Mills Law Firm PLLC
Pezzuto Robert E.
LandOfFree
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