Patent JPS5226150A successfully refreshed from Google Patents.
US4858331A
Expired / Lapsed
US
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Method and apparatus for measurement of caster, king-pin-inclination, and camber on motor vehicles
Assignee: Schenck RoTec GmbH
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Filing: 1987-08-31
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Granted: 1989-08-22
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Expires: 2007-08-31
Abstract
Abstract A method is disclosed for the correction of errors in the measurement of caster, king-pin-inclination and camber on motor vehicles. Inclinometers are used whereby errors are avoided of the type caused by non-horizontal positioning of the vehicle under test. Measurements on the vehicle can easily be carried out without special loading-weights and without roping the vehicle down to the ground. The additional angles of error caused by the inclined position of the vehicle with respect to the horizontal are measured and combined as a correction factor with the measured geometrical values.
Inventors
- 👤 Otfrid Maus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:20
CPC Classifications
G; G01; G01B; G01B7/00; G01B7/30; G01B7/315; G01B5/00; G01B5/24; G01B5/255; G01C; G01C9/00; G01C9/02; G01C9/06
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
128 words
In a process for the measurement of caster, camber and king-pin-inclination of a freely positioned motor vehicle comprising the steps of measuring the geometric values of caster, camber and king-pin-inclination while the vehicle is freely positioned, utilizing an inclinometer to measure a shift angle while the vehicle is freely positioned, and correcting the measured geometric values obtained while the vehicle was freely positioned with the measured shift angle, the improvement comprising utilizing at least one additional inclinometer along the longitudinal or traverse axis of the vehicle to measure the inclination of the vehicle relative to a horizontal plane along the axis where the additional inclinometer is positioned, and correcting the measured geometric values in accordance with the measured inclination along the axis where the additional inclinometer is positioned.
Claim 2
Dependent Claim
128 words
In a process for the measurement of caster, camber and king-pin-inclination of a freely positioned motor vehicle comprising the steps of measuring the geometric values of caster, camber and king-pin-inclination while the vehicle is freely positioned, utilizing an inclinometer to measure a shift angle while the vehicle is freely positioned, and correcting the measured geometric values obtained while the vehicle was freely positioned with the measured shift angle, the improvement comprising utilizing at least one additional inclinometer along the longitudinal or traverse axis of the vehicle to measure the inclination of the vehicle relative to a horizontal plane along the axis where the additional inclinometer is positioned, and correcting the measured geometric values in accordance with the measured inclination along the axis where the additional inclinometer is positioned.
Claim 3
Dependent Claim
39 words
A method as in claim 1 including the steps of measuring the inclinations of the vehicle along both the longitudinal and transverse axes of the vehicle under test, and correcting the geometric values in accordance with the measured inclinations.
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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) | 1992-08-21 | 1993-02-20 | 1993-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-08-21 | 1997-02-20 | 1997-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-08-21 | 2001-02-20 | 2001-08-22 | $7700.00 | Window Closed / Lapsed |