Handling: hand and hoist-line implements – Hand forks and shovels – Grappling type
Reexamination Certificate
1998-11-18
2001-04-10
Cherry, Johnny D. (Department: 3652)
Handling: hand and hoist-line implements
Hand forks and shovels
Grappling type
C172S375000, C254S132000
Reexamination Certificate
active
06213527
ABSTRACT:
FIELD OF INVENTION
The present invention generally relates to implements used to remove objects imbedded in the ground and, more particularly, relates to a manually operated implement for removal of entire plants, root and all, such as unwanted small trees, vines, and large weeds with sturdy stems. The purpose of the invention is to simplify the task of permanently removing such plants with an implement that applies leverage for the removal and does not require strenuous digging or the use of herbicides.
BACKGROUND OF THE INVENTION
Gardeners, homeowners, caretakers, landscapers, and foresters encounter numerous unwanted small trees, vines and fibrous weeds. There may be many reasons to remove these plants, collectively referred to in this application as “weed-trees.” They may be unsightly, they may have stickers or burrs that attach to the clothes of humans or the coats of pets and other animals. Perhaps most significantly, species of weed-trees have been identified as noxious or restricted noxious weeds. Such identification may be for many different reasons. Often weed-trees are identified as restricted noxious weeds because they inhibit the growth of desirable plants such as cultivated or native species. For example, in the northeastern and midwestern parts of the United States certain species of buckthorn have invaded native woodland areas and created an understory of brush that crowds out native trees such as oak, maples, and ash. There is thus a strong need for these weed-trees to be removed.
Weed-trees, however, are often difficult to remove by pulling or other traditional weeding techniques because their roots anchor them solidly in the ground. Oftentimes weed-trees grow near foundations of buildings, in planting beds with rock or plastic mulch, in rocky soils, or next to desirable plants. Such conditions complicate the removal. Digging out weed-trees may be difficult due to the proximity of other desirable plants or rocks on the surface or in the soil. The use of herbicides may not be an option given the proximity of desirable plants or a reluctance to use potentially harmful chemicals. Cutting weed-trees may only encourage vigorous re-growth.
The present invention is intended primarily for the easy removal of such unwanted plants. The implement also could remove small posts, stakes, or poles; remove concrete forms; or lift portions of heavy objects such as large pavers or small concrete slabs. The implement could be constructed with a sharp edge on one end of the head for trenching and for chopping objects such as roots. A claw on the other end could be used not only for tree removal but also for cultivating soils and for digging smaller weeds, trees, or other items from the ground.
There are tools presently available intended for the removal of weed trees. One tool is referred to as the “Weed and Brush Puller.” Another tool is referred to as the “Weed Wrench.” Both of these tools use clamping mechanisms to grip the stem of the weed-tree and then use leverage for the removal of the weed-tree.
The present invention represents several advances over these tools. First, the present invention has a limited number of parts and at least one embodiment has no moving parts. Multiple parts and moving parts tend to increase the cost of manufacture or assembly. They also increase the potential for failure of the device. Second, the present invention can be used for the removal of a greater variety of weed-trees. For example, the stems of weed-trees can vary dramatically in size and shape. Oftentimes, one encounters a stem which has been cut near the base and re-sprouted or a weed-tree may have multiple stems or very low branches. Because the existing tools identified above use clamping mechanisms to engage the stem, these tools may have difficulty in gripping a weedtree that has been cut or one with multiple branches or stems near the ground. Third, the present invention is more versatile. It can clear dirt or debris around the stem to ease removal or chop roots. The present invention can also be used to pry objects such as stakes or ones embedded in the ground or other media.
SUMMARY OF THE INVENTION
Generally, the present invention relates to an improved implement for the removal of unwanted trees, vines, weeds, and other objects from the ground One embodiment of the invention discloses a hand implement which includes a handle, a head, and gripping device. The head attaches to the handle in the same general way that the head of a maul or sledgehammer attaches to its handle. The gripping device attaches to the handle just above the head. The head and gripping device may be made of cast iron, steel, or a composite material. The handle may be made of fiberglass, metal, or wood The handle, head, and gripping device may be attached to each other by various means. For example, if the handle is made of fiberglass, the head, handle, and gripping hook may be bonded to each other with an adhesive such as epoxy.
Generally, the invention works by contacting the stem of a weed-tree near that point where the stem enters the ground. The head and gripping device grip the stem, and the user directs force to the handle in such a way that the bottom surface of the head acts as a fulcrum that lifts the weed-tree from the ground without severing the stem from the main roots of the plant.
The above summary of the present invention is not intended to describe each illustrated embodiment of the present invention. The figures and the detailed description which follow more particularly exemplify these embodiments.
REFERENCES:
patent: 82568 (1868-11-01), Tyzick et al.
patent: 173399 (1876-02-01), Engle
patent: 222295 (1879-12-01), McKeever
patent: 796592 (1905-08-01), Matthiesen
patent: 1239653 (1917-09-01), Willard
patent: 1687986 (1928-10-01), Mitter
patent: 1867086 (1932-07-01), Meixell
patent: 1869573 (1932-08-01), McMeans
patent: 2040751 (1936-05-01), Marseilles
patent: 2642305 (1953-06-01), Butler
patent: 3293674 (1966-12-01), Sapia
patent: 3952812 (1976-04-01), Lucan
patent: 3957299 (1976-05-01), Johnson et al.
patent: 4244560 (1981-01-01), Hawkins
patent: 4427182 (1984-01-01), Marik
patent: 4454792 (1984-06-01), Burris
patent: 4826137 (1989-05-01), Ahrgal
patent: 4844416 (1989-07-01), Hand
patent: 4856759 (1989-08-01), Ness
patent: 4997163 (1991-03-01), Henning
patent: 5100104 (1992-03-01), Wagner
patent: 5322264 (1994-06-01), Giambro
patent: 5447289 (1995-09-01), Callahan
patent: 5467830 (1995-11-01), Watson
patent: 5476298 (1995-12-01), Etemadian
patent: 5490374 (1996-02-01), Calande
patent: 5535833 (1996-07-01), Mathews
patent: 5609325 (1997-03-01), DeArmond
patent: 5664819 (1997-09-01), Conrad
patent: 5743340 (1998-04-01), Giacomini
patent: 5857529 (1999-01-01), Nguyen
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