The present invention is directed to a lever system for removing posts from ground surfaces.
Removing steel posts can be a physically difficult job and can require multiple individuals. The present invention features a post removal system for removing posts from a ground surface. The system of the present invention helps a user, for example a single person, to pull out posts (e.g., steel posts) more easily.
The present invention features a post removal system. In some embodiments, the post removal system comprises a base plate; a vertical support plate extending upwardly from a top surface of the base plate; a handle pivotally attached to a top edge of the vertical support plate via a pivot pin, the handle has a first end, a second end, and a midpoint halfway between the first end and the second end, the handle is positioned atop the vertical support plate such that the vertical support plate is at a point between the midpoint and the first end of the handle, the pivot pin is perpendicular to the handle, the handle can pivot upwardly and downwardly about the pivot pin; a stake gripping component pivotally attached to the first end of the handle via a hinge, the stake gripping component can pivot upwardly and downwardly about the hinge with respect to the handle, the stake gripping component comprises a slot disposed in a side adjacent to the hinge, wherein the slot is adapted to temporarily accept a stake; and a pin extending upwardly from the hinge in between the handle and the stake gripping component.
Any feature or combination of features described herein are included within the scope of the present invention provided that the features included in any such combination are not mutually inconsistent as will be apparent from the context, this specification, and the knowledge of one of ordinary skill in the art. Additional advantages and aspects of the present invention are apparent in the following detailed description and claims.
Referring now to
A handle 130 is pivotally attached to the top edge 121 of the vertical support plate 120 via a pivot pin 440. The pivot pin 440 may include but is not limited to a bolt, screw, or other shaft. The handle 130 can pivot upwardly and downwardly about the pivot pin 440 as shown in
A stake gripping component 210 is pivotally attached to the first end 131 of the handle 130 via a hinge 140. The stake gripping component 210 is adapted to temporarily grip or wrap around a stake 101. The stake gripping component 210 can pivot upwardly and downwardly with respect to the handle 130 about the hinge 140 as shown in
The system 100 further comprises a pin 450 disposed on the hinge 140 and extending upwardly from the hinge 140, e.g., in between the handle 130 and the stake gripping component 210. The pin 450 may be constructed in a variety of sizes. For example, in some embodiments, the pin 450 may be about ¼ inch in diameter. In some embodiments, the pin 450 is about 1 inch in length. The present invention is not limited to the aforementioned dimensions. The pin 450 may be used to help remove sign posts. Sign posts are well known to one of ordinary skill in the art. The sign posts generally have apertures along their lengths. The pin 450 can be inserted into one of the apertures to help grip the sign post.
The system 100 may be constructed in a variety of shapes and sizes. For example, in some embodiments, the handle 130 is between about 36 to 48 inches in length as measured from the first end 131 to the second end 132. In some embodiments, the handle 130 is between about 48 to 60 inches in length as measured from the first end 131 to the second end 132. In some embodiments, the handle 130 is between about 60 to 72 inches in length as measured from the first end 131 to the second end 132. In some embodiments, the handle 130 is more than about 72 inches in length. In some embodiments, the handle 130 is less than about 36 inches in length.
As used herein, the term “about” refers to plus or minus 10% of the referenced number. For example, an embodiment wherein the handle 130 is about 60 inches in length includes a handle 130 that is between 54 and 66 inches in length.
The disclosures of the following U.S. Patents are incorporated in their entirety by reference herein: U.S. Pat. No. 1,427,576; U.S. Pat. No. 1,778,682; U.S. Pat. No. 2,532,533; U.S. Pat. No. 3,779,516; U.S. Pat. No. 5,186,437; U.S. Pat. No. D361248; U.S. Pat. No. 5,681,030; U.S. Pat. No. D609540; U.S. Patent No. 2006/0108568.
Various modifications of the invention, in addition to those described herein, will be apparent to those skilled in the art from the foregoing description. Such modifications are also intended to fall within the scope of the appended claims. Each reference cited in the present application is incorporated herein by reference in its entirety.
Although there has been shown and described the preferred embodiment of the present invention, it will be readily apparent to those skilled in the art that modifications may be made thereto which do not exceed the scope of the appended claims. Therefore, the scope of the invention is only to be limited by the following claims.
The reference numbers recited in the below claims are solely for ease of examination of this patent application, and are exemplary, and are not intended in any way to limit the scope of the claims to the particular features having the corresponding reference numbers in the drawings.
Number | Name | Date | Kind |
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1427576 | Bryant | Aug 1922 | A |
1452205 | Madsen | Apr 1923 | A |
1778682 | McManus | Oct 1930 | A |
2532533 | Baldwin et al. | Dec 1950 | A |
3147718 | Steinberg | Sep 1964 | A |
3615073 | Lickey | Oct 1971 | A |
3779516 | King | Dec 1973 | A |
4738433 | Hoff | Apr 1988 | A |
5022632 | Beideck | Jun 1991 | A |
5186437 | Scott | Feb 1993 | A |
D361248 | Harper et al. | Aug 1995 | S |
5681030 | Nall | Oct 1997 | A |
5713559 | McClarin et al. | Feb 1998 | A |
5775673 | Carnes et al. | Jul 1998 | A |
D609540 | Oberg | Feb 2010 | S |
8201808 | Busalacchi | Jun 2012 | B1 |
20060108568 | Payne | May 2006 | A1 |
Entry |
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www.northerntool.com; Tuggy T-Post Puller; Internet; Jul. 12, 2011. |