Patent US4819736A successfully refreshed from Google Patents.
US4819736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Weed removal tool
Assignee: Individual
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Filing: 1987-03-24
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Granted: 1989-04-11
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Expires: 2007-03-24
Abstract
Abstract A tool for removing roots and plants from the earth while only minimally disturbing the surrounding area. The tool includes a first, proximal end for attachment to a device for rotating the tool and a second end including a three-tined head. One tine or prong of the three-tined head is longer than the remaining tines and serves to anchor and stabilize the tool in a working position while preventing a vibration or wandering of the tool during rotation. Adjacent prongs or blades rotate about the elongated prong as the body of the tool is rotated and thus disrupt the soil and root system of the undesired plant enabling the plant to be easily removed from the ground.
Inventors
- 👤 Virgil E. Hedgepeth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:39
CPC Classifications
A; A01; A01B; A01B1/00; A01B1/16
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
177 words
A tool for removing plants comprising: an elongated main body member having a first, proximal end and a second, distal end; said proximal end including means for coupling said main body member to a means for rotating said main body member about a longitudinal axis thereof; and said distal end "being generally planar and" including means for engaging and disrupting a root system and soil surrounding the base of an unwanted plant including a prong element having a longitudinal axis parallel to the longitudinal axis of said main body member and having a pointed distal end and first and second blade elements each being generally coplanar and parallel to said prong element and spaced laterally at each side therefrom by a gap, said prong element having a length greater than a length of each of said blade elements, said first and second blade elements and said prong element each having a width "as measured across said blade elements which is" greater than or equal to the gap defined between a said blade element and said prong element.
Claim 2
Dependent Claim
177 words
A tool for removing plants comprising: an elongated main body member having a first, proximal end and a second, distal end; said proximal end including means for coupling said main body member to a means for rotating said main body member about a longitudinal axis thereof; and said distal end "being generally planar and" including means for engaging and disrupting a root system and soil surrounding the base of an unwanted plant including a prong element having a longitudinal axis parallel to the longitudinal axis of said main body member and having a pointed distal end and first and second blade elements each being generally coplanar and parallel to said prong element and spaced laterally at each side therefrom by a gap, said prong element having a length greater than a length of each of said blade elements, said first and second blade elements and said prong element each having a width "as measured across said blade elements which is" greater than or equal to the gap defined between a said blade element and said prong element.
Claim 3
Dependent Claim
16 words
A tool as in claim 1, wherein said main body member is an elongated metal rod.
Claim 4
Dependent Claim
38 words
A tool as in claim 2, wherein said means for coupling comprises a plurality of flat faces defined about the circumference of said proximal end for engagement with a clamping attachment device provided on a means for rotation.
Claim 5
Dependent Claim
29 words
A tool as in claim 1, wherein said blade elements have flat distal-most ends so as to be substantially perpendicular to a longitudinal axis of said respective blade element.
Claim 6
Dependent Claim
19 words
A tool as in claim 1, wherein said blade elements are mounted on either side of said prong element.
Claim 7
Dependent Claim
25 words
A tool as in claim 1, wherein said longitudinal axis of said prong element is coincident with said longitudinal axis of said main body member.
Claim 8
Dependent Claim
19 words
A tool as in claim 6, wherein said blade elements are mounted on each side of said prong element.
Claim 9
Dependent Claim
29 words
A tool as in claim 1 wherein said main body member, said prong element and said first and second blade elements are formed as an integral one piece structure.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-04-10 | 1992-10-10 | 1993-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-10 | 1996-10-10 | 1997-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-10 | 2000-10-10 | 2001-04-11 | $7700.00 | Window Closed / Lapsed |