Vegetation cutting device
First Claim
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1. A vegetation cutting device comprising:
- a housing;
a drive gear;
a motor mounted in the housing configured to drive the drive gear,a rotatable eccentric first cam mounted on the drive gear;
a blade assembly comprising a first blade and a second blade wherein the first blade is coupled to the the first cam and the first blade is arranged to reciprocally move when driven by the first cam; and
a cam adjustment mechanism operatively connected to the first cam for varying an eccentricity of the first cam with respect to the drive gear and thereby varying a distance through which the first blade moves.
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Abstract
A vegetation cutting device having a housing and a motor mounted in the housing to drive a drive gear. A rotatable eccentric cam mounted on the drive gear. A reciprocating blade assembly having a first blade and a second blade, wherein the first blade is coupled to the rotatable eccentric cam and is arranged to reciprocally move when driven by the rotatable eccentric cam. A cam adjustment mechanism for varying the eccentricity of the rotatable eccentric cam with respect to the drive gear to thereby vary the distance through which the first blade moves.
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Citations
14 Claims
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1. A vegetation cutting device comprising:
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a housing; a drive gear; a motor mounted in the housing configured to drive the drive gear, a rotatable eccentric first cam mounted on the drive gear; a blade assembly comprising a first blade and a second blade wherein the first blade is coupled to the the first cam and the first blade is arranged to reciprocally move when driven by the first cam; and a cam adjustment mechanism operatively connected to the first cam for varying an eccentricity of the first cam with respect to the drive gear and thereby varying a distance through which the first blade moves. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A drive assembly for a vegetation cutting device comprising:
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a motor; a drive gear driveable by the motor; a rotatable eccentric cam mounted on the drive gear; a reciprocating blade assembly comprising a first blade and a second blade wherein the first blade is coupled to the cam and the first blade is arranged to reciprocally move when driven by the cam; and a cam adjustment mechanism operatively connected to the cam for varying an eccentricity of the cam with respect to the drive gear and thereby vary a distance through which the first blade moves.
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13. A vegetation cutting device comprising:
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a housing; a drive gear; a motor mounted in the housing configured to drive a drive gear, a rotatable eccentric cam mounted on the drive gear; a reciprocating blade assembly comprising a first blade and a second blade wherein the first blade is coupled to the eccentric cam and the first blade is arranged to reciprocally move when driven by the eccentric cam; and a cam adjustment mechanism having a pinion coupled to the eccentric cam for moving the eccentric cam relative to the first blade to vary a distance through which the first blade moves. - View Dependent Claims (14)
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Specification