Brake system and lawn mower implementing the same
First Claim
Patent Images
1. A powered implement having an engine comprising:
- a rotating member rotated by the engine, the rotating member being electrically ground;
an ignition circuit that powers the engine, the ignition circuit operably coupled to a conductive member that renders the engine inoperative when electrically grounded;
a brake system comprising an actuator, the conductive member normally biased into a brake position in which the conductive member contacts the rotating member and is electrically grounded as a result of the contact with the rotating member; and
the actuator operably coupled to the conductive member so that actuation of the actuator moves the conductive member from the brake position to an operating position in which the conductive member is spaced-apart from the rotating member and is in an electrically non-grounded state.
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Abstract
A brake system and powered implement, such as a lawn mower, incorporating the same. In one aspect the invention is a system for stopping an electrically grounded rotating member of an engine powered by an ignition circuit, the system comprising: a conductive member operably coupled to the ignition circuit that renders the engine inoperative when electrically grounded, the conductive member mounted adjacent the rotating member; and the conductive member normally biased into a brake position in which the conductive member contacts the rotating member and is electrically grounded as a result of the contact with the rotating member.
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Citations
22 Claims
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1. A powered implement having an engine comprising:
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a rotating member rotated by the engine, the rotating member being electrically ground; an ignition circuit that powers the engine, the ignition circuit operably coupled to a conductive member that renders the engine inoperative when electrically grounded; a brake system comprising an actuator, the conductive member normally biased into a brake position in which the conductive member contacts the rotating member and is electrically grounded as a result of the contact with the rotating member; and the actuator operably coupled to the conductive member so that actuation of the actuator moves the conductive member from the brake position to an operating position in which the conductive member is spaced-apart from the rotating member and is in an electrically non-grounded state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system for stopping an electrically grounded rotating member of an engine powered by an ignition circuit, the system comprising:
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a conductive member operably coupled to the ignition circuit that renders the engine inoperative when electrically grounded, the conductive member mounted adjacent the rotating member; the conductive member normally biased into a brake position in which the conductive member contacts the rotating member and is electrically grounded as a result of the contact with the rotating member; and wherein the conductive member is in an electrically non-grounded state when not in contact with the rotating member. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A brake system for stopping an electrically grounded rotating member of an engine powered by an ignition circuit, the brake system comprising:
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an electrically conductive brake pad operably coupled to the ignition circuit that renders the engine inoperative when electrically grounded; and wherein the electrically conductive brake pad is electrically coupled to the ignition circuit when the engine is inoperative and when the engine is operative. - View Dependent Claims (18, 19, 20, 21)
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22. A brake system for stopping an electrically grounded rotating member of an engine powered by an ignition circuit, the brake system comprising:
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an electrically conductive brake member movable between;
(1) a brake position in which the electrically conductive brake member contacts the electrically grounded rotating member; and
(2) an operating position in which the electrically conductive brake member is in an electrically non-grounded state;the electrically conductive brake member operably coupled to the ignition circuit to render the engine inoperative when electrically grounded; and wherein the electrically conductive brake member is electrically coupled to the ignition circuit in both the brake position and the operating position.
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Specification