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Patent US5154465A successfully refreshed from Google Patents.
US5154465A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Weed puller
Assignee: Kendon Manufacturing Ltd
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Filing: 1991-07-05
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Granted: 1992-10-13
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Expires: 2011-07-05
Abstract
Abstract A weed puller has a head mounted on one end of an elongate stem and a handle on the other end. The head has four blades with pick-up arms that normally extend vertically downwardly from the head. The pick-up arms may be pressed into the ground around a weed and then an actuator lever on the handle pulled to draw the ends of the pick-up arms together to grip a weed under the ground so it can be pulled.
Inventors
- 👤 Peter Pakosh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:57
CPC Classifications
A; A01; A01B; A01B1/00; A01B1/16; A01B1/18
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
130 words
A weed puller comprising: a head; at least three blades, each with a pick-up arm having a gripping end; mounting means mounting the blades on the head with the arms located symmetrically around a common centre line, for movement of the blades between an open condition with the gripping ends of the pick-up arms spaced apart, and a closed condition with the arms converging towards the gripping ends; means for moving the blades simultaneously between the open and closed conditions; and the gripping end of each arm comprising two gripping faces converging towards an apex, the gripping faces of each arm being in face-to-face engagement with the gripping faces of each adjacent arm and the apices of the gripping ends being substantially parallel in the closed condition of the blades.
Claim 2
Dependent Claim
130 words
A weed puller comprising: a head; at least three blades, each with a pick-up arm having a gripping end; mounting means mounting the blades on the head with the arms located symmetrically around a common centre line, for movement of the blades between an open condition with the gripping ends of the pick-up arms spaced apart, and a closed condition with the arms converging towards the gripping ends; means for moving the blades simultaneously between the open and closed conditions; and the gripping end of each arm comprising two gripping faces converging towards an apex, the gripping faces of each arm being in face-to-face engagement with the gripping faces of each adjacent arm and the apices of the gripping ends being substantially parallel in the closed condition of the blades.
Claim 3
Dependent Claim
48 words
A weed puller according to claim 1 wherein the means for moving the blades simultaneously between the open and closed conditions include: biasing means for biasing the blades into the open condition; and actuator means for moving the blades simultaneously from the open condition to the closed condition.
Claim 4
Dependent Claim
17 words
A weed puller according to claim 2 comprising four blades symmetrically arranged about the common centre line.
Claim 5
Dependent Claim
50 words
A weed puller according to claim 2 wherein each blade comprises a bell crank with an operating arm projecting laterally from the pick-up arm, the operating arms of the blades projecting towards the common centre line, and the actuator means comprise means for engaging the operating arms of the blades.
Claim 6
Dependent Claim
21 words
A weed puller according to claim 4 wherein the mounting means comprise pivot means pivotally mounting each blade on the head.
Claim 7
Dependent Claim
30 words
A weed puller according to claim 5 wherein in each blade, the pivot means and actuator means are located at an end of the pick-up arm opposite the gripping end.
Claim 8
Dependent Claim
33 words
A weed puller according to claim 6 wherein the actuator means comprise an elongate actuator member extending along the common centre line and means pivotally engaging the operating arms with the actuator member.
Claim 9
Dependent Claim
28 words
A weed puller according to claim 7 including an elongate hollow stem connected to the head and extending along the common centre line, around the elongate actuator member.
Claim 10
Dependent Claim
23 words
A weed puller according to claim 8 including fixed handle means mounted on the stem at an end thereof remote from the head.
Claim 11
Dependent Claim
29 words
A weed puller according to claim 9 including operating handle means mounted on the stem and connected to the actuator member for displacing the actuator member along the stem.
Claim 12
Dependent Claim
50 words
A weed puller according to claim 10 wherein the biasing means comprise a coil spring within the stem, first spring seat means secured to the stem and engaging one end of the spring and second spring seat means on the actuator member and engaging an opposite end of the spring.
Claim 13
Dependent Claim
13 words
A weed puller according to claim 1 wherein the gripping faces are serrated.
Claim 14
Dependent Claim
23 words
A weed puller according to claim 1 comprising four blades, with gripping faces of each gripping end being substantially perpendicular to one another.
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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) | 1995-10-13 | 1996-04-13 | 1996-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-10-13 | 2000-04-13 | 2000-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-10-13 | 2004-04-13 | 2004-10-13 | $7700.00 | Window Closed / Lapsed |