Grass cutting device
First Claim
1. A grass or weed cutting device adapted for attachment to a lawnmower, comprising:
- an elongated, rectangular, curved, rigid support member having two distal ends and structure disposed at a central location between the distal ends for attaching the member to the lawnmower;
airfoil means attached to the member between a distal end and the central location and curved upwardly towards an upstanding orientation relative to the member, and with the device attached to the lawnmower said airfoil means being oriented towards the lawnmower and away from the grass for providing suction on the grass; and
a plurality of elongated, transversely flexible tines attached to each distal end of the member, each tine extending outwardly from the member in general longitudinal alignment with the member, each tine having a distal tip disposed below the respective distal end of the member with the device attached to the lawnmower.
2 Assignments
0 Petitions
Accused Products
Abstract
A cutting device is provided to replace a conventional lawnmower blade which offers improved safety, outstanding grass cutting ability, improved grass bagging suction, and a reduction in the strain on the engine. The device includes an elongated, downwardly curved rigid thermoplastic member having an upstanding airfoil at each distal end. Several elongated flexible tines extend outwardly away and downwardly from the member. The tips of these tines operate to effectively cut the grass while flexing for safety if an object is encountered, such as a rock or toe. The airfoils increase the suction within the mowing cavity to increase the grass bagging efficiency. The downwardly curved configuration presents the tips of the tines for grass cutting while reducing or eliminating the drag of the member on the grass.
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Citations
21 Claims
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1. A grass or weed cutting device adapted for attachment to a lawnmower, comprising:
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an elongated, rectangular, curved, rigid support member having two distal ends and structure disposed at a central location between the distal ends for attaching the member to the lawnmower; airfoil means attached to the member between a distal end and the central location and curved upwardly towards an upstanding orientation relative to the member, and with the device attached to the lawnmower said airfoil means being oriented towards the lawnmower and away from the grass for providing suction on the grass; and a plurality of elongated, transversely flexible tines attached to each distal end of the member, each tine extending outwardly from the member in general longitudinal alignment with the member, each tine having a distal tip disposed below the respective distal end of the member with the device attached to the lawnmower. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A grass cutting device comprising:
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an elongated, rectangular, support member having a central location disposed in a first plane and distal ends on each side of the central location, the distal ends being disposed in a second plane generally parallel and spaced from the first plane, the member having an upper surface oriented generally away from said second plane and an opposed lower surface oriented generally towards said second plane, the upper surface having upstanding airfoils adjacent respective distal ends; and a plurality of transversely flexible, elongated tines attached to each distal end in general longitudinal alignment with the member, the tines being oriented away from the respective distal ends with the tips of the tines being generally disposed in a third plane generally parallel and spaced from the second plane. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A grass cutting device comprising:
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an elongated, rectangular support member having; a central location generally disposed in one plane and means for attaching the member to a lawnmower in its mowing cavity, a pair of distal ends on each side of the central location, and opposed upper and lower surfaces defining upper and lower directions; airfoil means attached to the upper surface of the member between a distal end and the central location and oriented in said upper direction for creating suction within the lawnmower cavity; and a plurality of elongated tines attached to each distal end in general longitudinal alignment with the member, each tine being flexible in all directions transverse to its longitudinal axis and having a distal tip generally disposed in another plane generally parallel and spaced from said one plane and extending generally in said lower direction. - View Dependent Claims (19, 20, 21)
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Specification