US4231823A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for centering two concentric cylinders
Assignee: H C PRICE Co
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Filing: 1978-12-13
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Granted: 1980-11-04
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Expires: 1998-12-13
Abstract
Abstract A method and apparatus for centering two concentric cylinders having different diameters is the subject of the present invention. A linear reference line is projected from an illuminating source along the length of the inner cylinder. At the other end of the cylinder is a photo receiver operable to provide a displacement reading related to the amount of light striking the receiver. As the inner cylinder is rotated about its center point, the amount of light striking the photo receiver varies based on the amount of arcuate displacement present at each point of the cylinder. The photo receiver then converts the incoming light into a displacement reading related to the arcuate displacement of the inner cylinder. The readings thus obtained are correlated with the points on the inner cylinder where they occurred to indicate the point and amount of maximum arcuate displacement. Thereafter, the outer cylinder is arcuately displaced a corresponding amount so that it will conform to the inner cylinder exactly.
Inventors
- 👤 Milburn L. Hart
- 👤 John F. Bridge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:34
CPC Classifications
G; G01; G01B; G01B11/00; G01B11/24; G01B11/2433; G01B11/26; G01B11/27; G01B11/272
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
68 words
A method for monitoring the position of a section of pipe within a filling cavity formed by the pipe and an outer jacket during filling, said method comprising the steps of: establishing a linear reference line along the inner surface of said section of pipe; and detecting the deviation of said section of pipe from said reference line caused by movement of said section of pipe during filling.
Claim 2
Independent Claim
68 words
A method for monitoring the position of a section of pipe within a filling cavity formed by the pipe and an outer jacket during filling, said method comprising the steps of: establishing a linear reference line along the inner surface of said section of pipe; and detecting the deviation of said section of pipe from said reference line caused by movement of said section of pipe during filling.
Claim 3
Dependent Claim
20 words
The method in claim 1 including the step of converting the detected deviation into numerical information representative of pipe movement.
Claim 4
Dependent Claim
22 words
The method in claim 1 including the step of adjusting the outer jacket to correct for movement of the pipe during filling.
Claim 5
Dependent Claim
83 words
The method in claim 1 wherein said step of establishing a linear reference line comprises the steps of: generating a beam of light from an illuminating source, said beam of light having a narrow depth and a width greater than the maximum amount of pipe movement; and projecting said beam of light along the length of said section of pipe so that the width of said beam of light is perpendicular to a line tangent to a point on said section of pipe.
Claim 6
Dependent Claim
70 words
The method of claim 4 wherein said step of detecting the deviation of said section of pipe comprises the steps of: receiving said beam of light at the other end of said section of pipe; selecting a reference point along the width of said beam of light; and detecting the deviation of said section of pipe from said reference point caused by movement of said section of pipe during filling.
Claim 7
Independent Claim
67 words
An apparatus for monitoring the position of a section of pipe within a filling cavity formed by the pipe and an outer jacket during filling, said apparatus comprising: means for establishing a linear reference line along the inner surface of said section of pipe; and means for determining the deviation of said pipe from said reference line caused by movement of said section of pipe during filling.
Claim 8
Independent Claim
67 words
An apparatus for monitoring the position of a section of pipe within a filling cavity formed by the pipe and an outer jacket during filling, said apparatus comprising: means for establishing a linear reference line along the inner surface of said section of pipe; and means for determining the deviation of said pipe from said reference line caused by movement of said section of pipe during filling.
Claim 9
Dependent Claim
19 words
The invention in claim 6 including means for converting the detected deviation into numerical information representative of pipe movement.
Claim 10
Dependent Claim
21 words
The invention in claim 6 including means for adjusting the outer jacket to correct for movement of the pipe during filling.
Claim 11
Dependent Claim
68 words
The invention in claim 6 wherein said means for establishing a linear reference line is comprised of an illuminating source operable to project a beam of light having a narrow depth and a width greater than the amount of pipe movement along the length of said section of pipe so that the width of said light beam is perpendicular to a line tangent to said section of pipe.
Claim 12
Dependent Claim
81 words
The invention in claim 9 wherein said determining means is comprised of: a photo receiver means positioned at the other end of the section of pipe, said photo receiving means being operable to select a reference point along the width of said beam of light and to detect the amount of deviation from said reference point caused by the movement of said section of pipe during filling; and means for converting the detected deviation into numerical information representative of pipe movement.
References Cited (Backward Citations)
US2816837A
Cited
US3914356A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-11-04 | 1984-05-05 | 1984-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-04 | 1988-05-05 | 1988-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-04 | 1992-05-05 | 1992-11-04 | $7700.00 | Window Closed / Lapsed |