US5757875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of tooth detection
Assignee: Visteon Global Technologies Inc
•
Filing: 1996-04-01
•
Granted: 1998-05-26
•
Expires: 2016-04-01
Abstract
Abstract A method for identifying a principal tooth in a series of teeth extending along at least a portion of a periphery of a rotatable object includes the steps of rotating the rotatable object, setting a counter to a predetermined value, measuring a first tooth in the series of teeth to obtain a first measurement, adding a qualifying value to the measurement to obtain a qualification measurement, measuring a second tooth in the series of teeth to obtain a second measurement, comparing the second measurement to the qualification measurement, and identifying the second tooth as the principal tooth when the second measurement exceeds the qualification measurement.
Inventors
- 👤 Mark S. Ramseyer
- 👤 Rollie M. Fisher
- 👤 Rudolf Bettelheim
- 👤 Vernon B. Goler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:22
CPC Classifications
G; G01; G01D; G01D5/00; G01D5/12; G01D5/244; G01D5/245; G01D5/2454; G01D5/2455; G01D5/2457
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
107 words
A method for identifying a principal tooth in a series of teeth extending along at least a portion of a periphery of a rotatable object, the method comprising the steps of: rotating the rotatable object; setting a counter to a predetermined value; measuring a first tooth in the series of teeth to obtain a first measurement; adding a qualifying value to the measurement to obtain a qualification measurement; measuring a second tooth in the series of teeth to obtain a second measurement; comparing the second measurement to the qualification measurement; and identifying the second tooth as the principal tooth when the second measurement exceeds the qualification measurement.
Claim 2
Independent Claim
107 words
A method for identifying a principal tooth in a series of teeth extending along at least a portion of a periphery of a rotatable object, the method comprising the steps of: rotating the rotatable object; setting a counter to a predetermined value; measuring a first tooth in the series of teeth to obtain a first measurement; adding a qualifying value to the measurement to obtain a qualification measurement; measuring a second tooth in the series of teeth to obtain a second measurement; comparing the second measurement to the qualification measurement; and identifying the second tooth as the principal tooth when the second measurement exceeds the qualification measurement.
Claim 3
Dependent Claim
22 words
A method as set forth in claim 1 wherein the step of measuring the first tooth is performed in an angle domain.
Claim 4
Dependent Claim
22 words
A method as set forth in claim 1 wherein the step of measuring the second tooth is performed in an angle domain.
Claim 5
Dependent Claim
28 words
A method as set forth in claim 1 wherein the step of identifying the second tooth includes the step of measuring a tooth adjacent to the first tooth.
Claim 6
Dependent Claim
25 words
A method as set forth in claim 1 including the step of incrementing the counter by one when the qualification measurement exceeds the second measurement.
Claim 7
Dependent Claim
27 words
A method as set forth in claim 1 including the step of setting the counter to a predetermined value when the second measurement exceeds the qualification measurement.
Claim 8
Dependent Claim
22 words
A method as set forth in claim 6 including the step of incrementing the counter when a principal tooth has been identified.
Claim 9
Independent Claim
110 words
A method for identifying a principal tooth in a series of teeth extending along a periphery of a rotatable object, the method comprising the steps of: rotating the rotatable object; setting a counter to a predetermined value; measuring a first tooth in the series of teeth to obtain a first measurement in an angle domain; adding a qualifying value to the measurement to obtain 4 qualification measurement; measuring a second tooth in the series of teeth to obtain a second measurement in the angle domain; comparing the second measurement to the qualification measurement; and identifying the second tooth as the principal tooth when the second measurement exceeds the qualification measurement.
Claim 10
Independent Claim
110 words
A method for identifying a principal tooth in a series of teeth extending along a periphery of a rotatable object, the method comprising the steps of: rotating the rotatable object; setting a counter to a predetermined value; measuring a first tooth in the series of teeth to obtain a first measurement in an angle domain; adding a qualifying value to the measurement to obtain 4 qualification measurement; measuring a second tooth in the series of teeth to obtain a second measurement in the angle domain; comparing the second measurement to the qualification measurement; and identifying the second tooth as the principal tooth when the second measurement exceeds the qualification measurement.
Claim 11
Dependent Claim
27 words
A method as set forth in claim 8 wherein the step of identifying the second tooth includes the step of measuring a tooth adjacent the first tooth.
Claim 12
Dependent Claim
25 words
A method as set forth in claim 8 including the step of incrementing the counter by one when the qualification measurement exceeds the second measurement.
Claim 13
Dependent Claim
27 words
A method as set forth in claim 8 including the step of setting the counter to a predetermined value when the second measurement exceeds the qualification measurement.
Claim 14
Independent Claim
135 words
A method for identifying a principal tooth in a series of teeth extending along at least a portion of a periphery of a rotatable object, the method comprising the steps of: rotating the rotatable object; setting a counter to a predetermined value; measuring a first tooth in the series of teeth to obtain a first measurement; dividing the first measurement by a predetermined subdivision value to obtain a length; measuring a second tooth to obtain a second measurement in terms of the length; adding a qualifying value to the second measurement to obtain a qualification measurement; measuring a third tooth in the series of teeth to obtain a third measurement; comparing the third measurement to the qualification measurement; and identifying the third tooth as the principal tooth when the third measurement exceeds the qualification measurement.
Claim 15
Independent Claim
135 words
A method for identifying a principal tooth in a series of teeth extending along at least a portion of a periphery of a rotatable object, the method comprising the steps of: rotating the rotatable object; setting a counter to a predetermined value; measuring a first tooth in the series of teeth to obtain a first measurement; dividing the first measurement by a predetermined subdivision value to obtain a length; measuring a second tooth to obtain a second measurement in terms of the length; adding a qualifying value to the second measurement to obtain a qualification measurement; measuring a third tooth in the series of teeth to obtain a third measurement; comparing the third measurement to the qualification measurement; and identifying the third tooth as the principal tooth when the third measurement exceeds the qualification measurement.
Claim 16
Dependent Claim
22 words
A method as set forth in claim 12 wherein the step of measuring the first tooth is performed in an angle domain.
Claim 17
Dependent Claim
22 words
A method as set forth in claim 12 wherein the step of measuring the second tooth is performed in an angle domain.
Claim 18
Dependent Claim
27 words
A method as set forth in claim 12 wherein the step of measuring the second tooth includes the step of measuring a tooth adjacent the first tooth.
Claim 19
Dependent Claim
25 words
A method as set forth in claim 12 including the step of incrementing the counter by one when the qualification measurement exceeds the third measurement.
Claim 20
Dependent Claim
27 words
A method as set forth in claim 12 including the step of setting the counter to a predetermined value when the third measurement exceeds the qualification measurement.
Claim 21
Dependent Claim
22 words
A method as set forth in claim 17 including the step of incrementing the counter when said principal tooth has been identified.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-05-25 | 2001-11-24 | 2002-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-05-25 | 2005-11-24 | 2006-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-05-25 | 2009-11-24 | 2010-05-26 | $7700.00 | Window Closed / Lapsed |