Remote attachment control device for power machine
First Claim
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1. A power machine having a frame with an operator compartment, an engine, traction members for driving the machine, and a plurality of power actuators, and further comprising:
- an electrical power circuit;
a hydraulic power circuit coupled to the plurality of power actuators through a plurality of actuator valves;
a first ignition switch in the operator compartment operably coupled to the engine;
an attachment having an attachment actuator coupled to the hydraulic power circuit to receive hydraulic fluid under pressure;
a first hydraulic control input mechanism disposed within the operator compartment and coupled to the hydraulic power circuit to control provision of hydraulic fluid to the attachment; and
an attachment control device disposed outside the operator compartment and including a second ignition switch operably coupled to the engine and a second hydraulic control input coupled to the hydraulic power circuit to control provision of hydraulic fluid to the attachment;
wherein the attachment control device is configured such that the second hydraulic control input is non-functional when the engine is started with the first ignition switch.
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Abstract
The present invention provides an attachment for use with a power machine. An attachment control device includes an ignition switch and a stop switch and allows a user to operate the attachment from outside the operator compartment of the power machine, when the power machine is started from the attachment control device.
84 Citations
20 Claims
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1. A power machine having a frame with an operator compartment, an engine, traction members for driving the machine, and a plurality of power actuators, and further comprising:
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an electrical power circuit; a hydraulic power circuit coupled to the plurality of power actuators through a plurality of actuator valves; a first ignition switch in the operator compartment operably coupled to the engine; an attachment having an attachment actuator coupled to the hydraulic power circuit to receive hydraulic fluid under pressure; a first hydraulic control input mechanism disposed within the operator compartment and coupled to the hydraulic power circuit to control provision of hydraulic fluid to the attachment; and an attachment control device disposed outside the operator compartment and including a second ignition switch operably coupled to the engine and a second hydraulic control input coupled to the hydraulic power circuit to control provision of hydraulic fluid to the attachment; wherein the attachment control device is configured such that the second hydraulic control input is non-functional when the engine is started with the first ignition switch. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An attachment for a power machine of the type having a frame with an operator compartment, an engine, traction members for driving the machine, an electrical power circuit, a hydraulic power circuit coupled to a plurality of power actuators through a plurality of actuator valves, a first ignition switch in the operator compartment operably coupled to the engine, and a first hydraulic control input mechanism disposed within the operator compartment and coupled to the hydraulic power circuit to control provision of hydraulic fluid, the attachment comprising:
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an attachment actuator disconnectably coupleable to the hydraulic power circuit to receive hydraulic fluid under pressure; and an attachment control device disposed outside the operator compartment and including a second ignition switch operably coupled to the engine and a second hydraulic control input coupleable to the hydraulic power circuit to control provision of hydraulic fluid to the attachment; wherein the attachment control device is configured such that the second hydraulic control input is non-functional when the engine is started with the first ignition switch. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification