Brush cutter emergency stop system
First Claim
1. Safety apparatus for a tool driven by a motor at a high speed, comprising:
- a housing for mounting the tool, said housing being movable over a ground surface; and
a ground engaging member disposed to follow the ground surface as said housing moves over the ground surface, said ground engaging member being moveable relative to said housing; and
a sensor for measuring a distance said ground engaging member moves relative to said housing; and
means for stopping the motor when said ground engaging member moves a predetermined distance relative to said housing.
1 Assignment
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Accused Products
Abstract
A safety apparatus for a tool driven by a motor at high speeds is provided, more particularly, an apparatus including a housing moveable over the ground surface for mounting the tool, and a ground engaging member disposed to follow the ground surface as the housing moves over same, the ground engaging member being moveable relative to the housing. The apparatus further includes a sensor for measuring the relative distance between the housing and ground engaging member, and means for selectively stopping the motor upon the distance between the ground engaging member and the housing exceeding a predetermined distance.
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Citations
25 Claims
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1. Safety apparatus for a tool driven by a motor at a high speed, comprising:
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a housing for mounting the tool, said housing being movable over a ground surface; and
a ground engaging member disposed to follow the ground surface as said housing moves over the ground surface, said ground engaging member being moveable relative to said housing; and
a sensor for measuring a distance said ground engaging member moves relative to said housing; and
means for stopping the motor when said ground engaging member moves a predetermined distance relative to said housing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A brush cutter apparatus comprising:
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a moveable side panel for preventing debris from being projected from a side of a brush cutter housing, a biasing assembly having a first end connected to said housing and a second end pivotally connected to said moveable side panel for biasing said moveable side panel toward a surface over which said brush cutter apparatus travels, said moveable side panel being able to communicate with said housing for shutting off said brush cutter when said housing is lifted a predetermined distance from the surface over which said brush cutter apparatus travels. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A brush cutter attachment comprising:
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a housing for housing a rotatable cutting blade, said housing having a shut-off valve attached thereon; and
a side panel, moveably connected to said housing wherein said side panel has a limiting pin for engaging said shut-off valve when said side panel moves a predetermined distance with respect to said housing; and
a biasing assembly secured to said housing for biasing said side panel with respect to said housing, said biasing assembly being pivotally connected to a first end of a connecting arm, said connecting arm having a second end pivotally connected to said side panel.
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Specification