US4432229A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wheel wear measurement system
Assignee: RCA Corp
•
Filing: 1982-06-04
•
Granted: 1984-02-21
•
Expires: 2002-06-04
Abstract
Abstract A system for measuring wheel wear of a railroad vehicle includes a first speed measuring device, such as a microwave doppler speed sensor for measuring speed of the vehicle independent of wheel rotation rate, a second speed measuring device for measuring vehicle speed in terms of wheel rotation rate and a comparison device for measuring the difference of the two speed signals over time to therefore provide a signal indicative of wheel wear.
Inventors
- 👤 Markus Nowogrodzki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:31
CPC Classifications
G; G01; G01P; G01P3/00; G01P3/42; G01P3/56; G01M; G01M17/00; G01M17/08; G01M17/10
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
94 words
A system for measuring wear of a wheel on a moving vehicle comprising in combination: first means for providing a signal V 1 indicative of the measurement of the actual velocity of said vehicle independent of wheel motion; second means of providing a signal V 2 indicative of revolutions per unit time of said wheel; and means responsive to signals V 1 and V 2 for determining the difference between V 1 and V 2 at time spaced points at at least one value of V 1 to determine therefrom wear of said wheel.
Claim 2
Independent Claim
94 words
A system for measuring wear of a wheel on a moving vehicle comprising in combination: first means for providing a signal V 1 indicative of the measurement of the actual velocity of said vehicle independent of wheel motion; second means of providing a signal V 2 indicative of revolutions per unit time of said wheel; and means responsive to signals V 1 and V 2 for determining the difference between V 1 and V 2 at time spaced points at at least one value of V 1 to determine therefrom wear of said wheel.
Claim 3
Dependent Claim
17 words
Combination as set forth in claim 1 wherein said first means comprises a microwave doppler speed sensor.
Claim 4
Dependent Claim
19 words
Combination as set forth in claim 1 or claim 2 wherein said first means is mounted on said vehicle.
Claim 5
Dependent Claim
18 words
Combination as set forth in claim 1 or claim 2 wherein said vehicle is a railroad type vehicle.
References Cited (Backward Citations)
US3564488A
Cited
US3924461A
Cited
US4065975A
Cited
US4058279A
Cited
US4103548A
Cited
US4148027A
Cited
US4353068A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-02-20 | 1987-08-22 | 1988-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-02-20 | 1991-08-22 | 1992-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-02-20 | 1995-08-22 | 1996-02-21 | $7700.00 | Window Closed / Lapsed |