EP0239689A2
Expired / Lapsed
EP
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Aperture measuring system for cord reinforced tyre fabric
Assignee: Honeywell Measurex Corp
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Filing: 1986-04-04
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Granted: —
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Expires: 2006-04-04
Abstract
Abstract A system for measuring the open space between, and the ratio of open space to cord diameter, of cord reinforced tyre fabric. A collimated X-ray source and detector scan across the tyre fabric as it is calendered providing a signal corresponding to each edge of a cord. A counter counting at a constant rate provides a time interval measurement of each open space, and also of the corresponding open space plus cord, as the X-ray source and detector scans the fabric. The quotient of the two time intervals determined is proportional to the fractional open space at a particular location in the fabric. An alarm is provided to indicate when the open space is outside predetermined limits.
Inventors
- 👤 Philip M. Hegland
- 👤 Lee M. Chase
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 08:48
CPC Classifications
G; G01; G01N; G01N23/00; G01N23/02; G01N23/06; G01N23/18; G01N23/185; B; B29; B29D; B29D30/00; G01N23/083; G01N23/16; G01N2223/00; G01N2223/60; G01N2223/627
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
147 words
A system for determining the open space between the cords of cord reinforced tire fabric which comprises: a) a radiation source for providing a collimated beam of radiation through said tire fabric, said radiation being such that a greater amount of radiation will penetrate through the rubber of said fabric than through the cord of said fabric; b) a detector for detecting said radiation aligned with said collimated beam of radiation and generating an electrical signal in response thereto; c) means for causing said radiation source and said detector to scan across a section of said tire fabric at a predetermined speed; d) means responsive to said electrical signal generated by said detector for providing a timing signal when said detector bears a predetermined relationship to each edge of the cords in said fabric; and e) means for measuring elapsed times between occurrences of said timing signals.
Claim 2
Independent Claim
147 words
A system for determining the open space between the cords of cord reinforced tire fabric which comprises: a) a radiation source for providing a collimated beam of radiation through said tire fabric, said radiation being such that a greater amount of radiation will penetrate through the rubber of said fabric than through the cord of said fabric; b) a detector for detecting said radiation aligned with said collimated beam of radiation and generating an electrical signal in response thereto; c) means for causing said radiation source and said detector to scan across a section of said tire fabric at a predetermined speed; d) means responsive to said electrical signal generated by said detector for providing a timing signal when said detector bears a predetermined relationship to each edge of the cords in said fabric; and e) means for measuring elapsed times between occurrences of said timing signals.
Claim 3
Dependent Claim
13 words
The system of claim 1 where said radiation source is an X-ray source.
Claim 4
Dependent Claim
38 words
The system of claim 1 where said means for measuring elapsed times includes means for determining the time required for said radiation source and detector to scan the distance between adjacent edges of two cords in said fabric.
Claim 5
Dependent Claim
64 words
The system of claim 3 where said means for measuring elapsed times further includes means for determining the scan time between one of said adjacent edges of two cords and the corresponding edge of the other of said two cords, and means for dividing the numerical value of one of said scan times by the numerical value of the other of said scan times.
Claim 6
Dependent Claim
43 words
The system of claim 4 and further including alarm means for providing a signal whenever the ratio of the numerical value of one of said scan times to the numerical value of the other of said scan times is outside of preestablished limits.
Claim 7
Dependent Claim
61 words
The system of claim 1 where said means for providing a timing signal includes: a) means for detecting accessive maximum and minimum values of said electrical signal; b) means for providing a reference voltage dependent on said maximum and minimum voltages; and c) comparator means for generating one of said timing signals each time said electrical signal equals said reference voltage.
Claim 8
Dependent Claim
29 words
The system of claim 6 where said reference voltage has a magnitude equal to one half of the sum of said maximum and minimum values of said electrical signal.
References Cited (Backward Citations)
No citation records indexed.
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