US4931967A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control system calibration
Assignee: Deere and Co
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Filing: 1989-01-06
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Granted: 1990-06-05
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Expires: 2009-01-06
Abstract
Abstract A microprocessor-based control system includes an automatic calibration and configuration feature. A calibration and configuration algorithm operates to establish the sensor ranges of all sensors installed and disables certain configurable features if the associated sensors are not present. The algorithm also provides a functional test of the control system during the calibration process.
Inventors
- 👤 Thomas E. Boe
- 👤 Mark A. Bergene
- 👤 Carl E. Kittle
- 👤 Gregory E. Sparks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:25
CPC Classifications
A; A01; A01B; A01B63/00; A01B63/02; A01B63/10; A01B63/111; A01B63/112
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
In a hitch control system having a command lever movable within a predetermined range of positions, a lever position sensor generating lever position signals, a control unit coupled to the sensor and generating control signals as a function of the sensed lever positions, and an actuator movable in response to the control signals, a calibration method comprising: moving the lever through its entire range of positions; automatically determining a range of magnitude of the lever position signals corresponding to the range of positions through which the lever is moved; and automatically adjusting the control unit as a function of the determined range of magnitude of the lever position signals.
Claim 2
Dependent Claim
109 words
In a hitch control system having a command lever movable within a predetermined range of positions, a lever position sensor generating lever position signals, a control unit coupled to the sensor and generating control signals as a function of the sensed lever positions, and an actuator movable in response to the control signals, a calibration method comprising: moving the lever through its entire range of positions; automatically determining a range of magnitude of the lever position signals corresponding to the range of positions through which the lever is moved; and automatically adjusting the control unit as a function of the determined range of magnitude of the lever position signals.
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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) | 1993-06-04 | 1993-12-04 | 1994-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-04 | 1997-12-04 | 1998-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-04 | 2001-12-04 | 2002-06-05 | $7700.00 | Window Closed / Lapsed |