US4723802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary weed extractor
Assignee: Individual
•
Filing: 1985-10-31
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Granted: 1988-02-09
•
Expires: 2005-10-31
Abstract
Abstract A rotary driven elongated pointed rod member having wingnut-like projections affixed thereto. The wingnut-like projections being spaced apart sufficient distances for contacting weeds and undesired plants at interval points when the device is moved beneath the surface of the ground while being rotated. The projections grip and wind the weed about the rod and then retain the weed and its roots and carry the unwanted wood and its root system out of the soil. The projections can depend straight downwardly or can be canted to form a spiral soil entering action. Following the withdrawal of the weed the loose soil that has been pulverized and aerated is left in the hole that had been formed by the weed removing action.
Inventors
- 👤 David G. Fambrough
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:23
CPC Classifications
A; A01; A01B; A01B1/00; A01B1/06; A01B1/065; A01B1/16; A01B1/24; A01B1/243
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
166 words
An apparatus for removing weeds and other unwanted plants from the soil comprising: an elongated shaft tapered to a point at one end thereof; a plurality of wingnut-shaped members rigidly affixed to said shaft and spaced longitudinally along the length of said shaft at selected locations between said tapered end and the end of said shaft opposite said tapered end; each of said wingnut-shaped members having the shape of a conventional wingnut as seen in side view including a pair of oppositely directed flattened wing extensions affixed to an enlarged element; each of said extensions having an outwardly directed portion also directed longitudinally along the length of said shaft toward said tapered end of said shaft; said outwardly and longitudinally directed portion forming an angle with said shaft sufficient to direct weeds and other unwanted plants inwardly toward said shaft during rotation thereof in a clockwise direction; and rotational force applying means connected to said shaft for causing rotation of said shaft about its longitudinal axis.
Claim 2
Independent Claim
166 words
An apparatus for removing weeds and other unwanted plants from the soil comprising: an elongated shaft tapered to a point at one end thereof; a plurality of wingnut-shaped members rigidly affixed to said shaft and spaced longitudinally along the length of said shaft at selected locations between said tapered end and the end of said shaft opposite said tapered end; each of said wingnut-shaped members having the shape of a conventional wingnut as seen in side view including a pair of oppositely directed flattened wing extensions affixed to an enlarged element; each of said extensions having an outwardly directed portion also directed longitudinally along the length of said shaft toward said tapered end of said shaft; said outwardly and longitudinally directed portion forming an angle with said shaft sufficient to direct weeds and other unwanted plants inwardly toward said shaft during rotation thereof in a clockwise direction; and rotational force applying means connected to said shaft for causing rotation of said shaft about its longitudinal axis.
Claim 3
Dependent Claim
23 words
The apparatus of claim 1 wherein said extensions are spirally formed about the longitudinal axis of said shaft in a clockwise directed attitude.
Claim 4
Dependent Claim
24 words
The apparatus of claim 1 wherein said rotational force applying means is an electrically operated hand drill with variable speed control and reversing capability.
Claim 5
Dependent Claim
15 words
The apparatus of claim 1 wherein said rotational force applying means is a hand-operated brace.
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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) | 1991-02-08 | 1991-08-10 | 1992-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-02-08 | 1995-08-10 | 1996-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-02-08 | 1999-08-10 | 2000-02-09 | $7700.00 | Window Closed / Lapsed |