Patent US5772628A successfully refreshed from Google Patents.
Patent US6202014B1 successfully refreshed from Google Patents.
US6202014B1
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US
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Features of main control computer for a power machine
Assignee: Doosan Bobcat North America Inc
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Filing: 1999-04-23
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Granted: 2001-03-13
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Expires: 2019-04-23
Abstract
Abstract The present invention is directed to a computer based control system for controlling hydraulic and electromechanical actuators on a power machine, such as a skid steer loader. The computer based control system is configured to implement a number of features to enhance certain operational aspects of the power machine. One such feature includes an operator actuable selector which provides a selector signal based on an operator input. A controller receives the selector signal and provides an auxiliary output signal to control an auxiliary valve in a selected one of an on/off mode and a proportional mode based on the selector signal.
Inventors
- 👤 Kenneth A. Brandt
- 👤 Scott R. Rossow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:36
CPC Classifications
F; F15; F15B; F15B21/00; F15B21/08; F15B21/087; E; E02; E02F; E02F9/00; E02F9/20; E02F3/00; E02F3/04; E02F3/28; E02F3/34; E02F3/3414; E02F3/36; E02F3/42; E02F3/43; E02F3/431; E02F9/2004; E02F9/2025; E02F9/2029; E02F9/2058; E02F9/2062; E02F9/2066; E02F9/22; E02F9/2246; E02F9/226; E02F9/2264; E02F9/2267; E02F9/2271; E02F9/24; E02F9/26; F02; F02D; F02D41/00; F02D41/02; F02D41/04; F02D41/08; F02D41/083; F01; F01P; F01P2025/00; F01P2025/08; F01P2025/40; F01P7/00; F01P7/02; F01P7/04; F01P7/044; F02D2200/00; F02D2200/02; F02D2200/023; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86582; Y10T137/86614; Y10T74/00; Y10T74/20; Y10T74/20396; Y10T74/20402; Y10T74/20408; Y10T74/20414
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
101 words
A power machine control system, comprising: a hydraulic system including, a primary hydraulic coupler connected, through a primary valve, to a source of hydraulic fluid and an auxiliary hydraulic coupler connected, through an auxiliary valve, to the source; an operator actuable selector providing a selector signal based on an operator input; and an electronic controller, coupled to the auxiliary valve and the selector, configured to receive the selector signal and provide an auxiliary output signal to control a valve spool in the auxiliary valve in a selected one of an on/off mode and a proportional mode based on the selector signal.
Claim 2
Dependent Claim
101 words
A power machine control system, comprising: a hydraulic system including, a primary hydraulic coupler connected, through a primary valve, to a source of hydraulic fluid and an auxiliary hydraulic coupler connected, through an auxiliary valve, to the source; an operator actuable selector providing a selector signal based on an operator input; and an electronic controller, coupled to the auxiliary valve and the selector, configured to receive the selector signal and provide an auxiliary output signal to control a valve spool in the auxiliary valve in a selected one of an on/off mode and a proportional mode based on the selector signal.
Claim 3
Dependent Claim
39 words
The power machine control system of claim 1 wherein the selector comprises: a toggle switch, wherein the controller is configured to switch between controlling the auxiliary valve in the on/off and proportional modes when the toggle switch is toggled.
Claim 4
Dependent Claim
16 words
The power machine control system of claim 1 wherein the selector switch comprises: a depressible button.
Claim 5
Dependent Claim
16 words
The power machine control system of claim 1 wherein the selector switch comprises: a keypad input.
Claim 6
Dependent Claim
21 words
The power machine control system of claim 1 wherein the selector switch comprises: a user actuable input located on a handgrip.
Claim 7
Dependent Claim
33 words
The power machine control system of claim 1 wherein the auxiliary output signal, when in the proportional mode, comprises a modulated signal applied to proportionally control a valve solenoid in the auxiliary valve.
Claim 8
Dependent Claim
139 words
A power machine, comprising: a hydraulic system including, a source of hydraulic fluid, a primary valve, a primary hydraulic coupler connected, through the primary valve, to the source of hydraulic fluid, an auxiliary valve, and an auxiliary hydraulic coupler connected, through the auxiliary valve, to the source; a primary hydraulic actuator coupled to the primary hydraulic coupler; an auxiliary hydraulic actuator coupled to the auxiliary hydraulic coupler; an operator actuable selector, disposed on a hand grip of a steering lever, providing a selector signal based on an operator input; and an electronic controller, coupled to the auxiliary valve and the selector, configured to receive the selector signal and provide an auxiliary output signal to control a valve spool in the auxiliary valve in a selected one of an on/off mode and a proportional mode based on the selector signal.
Claim 9
Dependent Claim
139 words
A power machine, comprising: a hydraulic system including, a source of hydraulic fluid, a primary valve, a primary hydraulic coupler connected, through the primary valve, to the source of hydraulic fluid, an auxiliary valve, and an auxiliary hydraulic coupler connected, through the auxiliary valve, to the source; a primary hydraulic actuator coupled to the primary hydraulic coupler; an auxiliary hydraulic actuator coupled to the auxiliary hydraulic coupler; an operator actuable selector, disposed on a hand grip of a steering lever, providing a selector signal based on an operator input; and an electronic controller, coupled to the auxiliary valve and the selector, configured to receive the selector signal and provide an auxiliary output signal to control a valve spool in the auxiliary valve in a selected one of an on/off mode and a proportional mode based on the selector signal.
Claim 10
Dependent Claim
37 words
The power machine of claim 7 wherein the selector comprises: a toggle switch, wherein the controller is configured to switch between controlling the auxiliary valve in the on/off and proportional modes when the toggle switch is toggled.
Claim 11
Dependent Claim
14 words
The power machine in claim 7 wherein the selector switch comprises: a depressible button.
Claim 12
Dependent Claim
14 words
The power machine of claim 7 wherein the selector switch comprises: a keypad input.
Claim 13
Dependent Claim
35 words
The power machine of claim 7 and further including a plurality of steering levers with hand grips thereon, and wherein the selector switch comprises a user actuable input disposed on one of the hand grips.
Claim 14
Dependent Claim
26 words
The power machine of claim 7 wherein the auxiliary output signal comprises a modulated signal applied to proportionally control a valve solenoid in the auxiliary valve.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-03-12 | 2004-09-11 | 2005-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-03-12 | 2008-09-11 | 2009-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-03-12 | 2012-09-11 | 2013-03-13 | $7700.00 | Window Closed / Lapsed |