Patent US1893305A successfully refreshed from Google Patents.
Patent US3905119A successfully refreshed from Google Patents.
US3905119A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for testing the contour of an object
Assignee: Ernst Leitz Wetzlar GmbH
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Filing: 1974-03-29
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Granted: 1975-09-16
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Expires: 1994-03-29
Abstract
Abstract A device for testing the contour of an object by determining the relative locations of test portions on the contour. In this device means are provided for moving the object to be tested through the idle path at a high speed and for bringing about the testing contact at a considerably lower speed. To this end, a first and a second sensor are so moved into the range of the object that the second sensor is within the range of the object contour and the first sensor is within the range of the test portions. The object is then moved along a testing path at a first speed until the second sensor is engaged by the contour, thereby actuating a control device and causing the object to be driven thereafter at a second speed which is slower than the first speed. At this slower speed the test portions are allowed to engage the first sensor for sensing the location of this particular test portion.
Inventors
- 👤 Lothar Meyding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:41
CPC Classifications
G; G01; G01B; G01B7/00; G01B7/28; G01B7/14; G01B7/146
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
220 words
A measuring apparatus for determining the relative position of test portions on the contour of an object comprising: a. a base member; b. chucking means for holding said object and moving said contour with respect to said base member along a testing path; c. carrier means adjustably supported on the base member of said measuring apparatus for movement toward and away from said chucking means; d. a first sensor mounted on said carrier means for being positioned within the range of said test portions; e. a second sensor mounted on said carrier means for being positioned within the range of said contour and said test portions to contact said contour and said test portions prior to the engagement thereof by said first sensor; f. drive means for driving said test portions along said testing path at a first speed and at a second speed lower than said first speed; and g. a control device electrically connected with said sensors and said drive means wherein engagement of said second sensor with said contour of said object causes said control device to switch said first speed to said second speed and simultaneously actuates means for sensing with said first sensor the location of one of said test portions as a function of the position of said test portions along said testing path.
Claim 2
Dependent Claim
220 words
A measuring apparatus for determining the relative position of test portions on the contour of an object comprising: a. a base member; b. chucking means for holding said object and moving said contour with respect to said base member along a testing path; c. carrier means adjustably supported on the base member of said measuring apparatus for movement toward and away from said chucking means; d. a first sensor mounted on said carrier means for being positioned within the range of said test portions; e. a second sensor mounted on said carrier means for being positioned within the range of said contour and said test portions to contact said contour and said test portions prior to the engagement thereof by said first sensor; f. drive means for driving said test portions along said testing path at a first speed and at a second speed lower than said first speed; and g. a control device electrically connected with said sensors and said drive means wherein engagement of said second sensor with said contour of said object causes said control device to switch said first speed to said second speed and simultaneously actuates means for sensing with said first sensor the location of one of said test portions as a function of the position of said test portions along said testing path.
Claim 3
Dependent Claim
43 words
A device as claimed in claim 1, wherein a support mounted on said base member adjustably mounts said carrier means for movement toward and away from said chucking means, and has mounted thereon means for advancing said carrier means toward said chucking means.
Claim 4
Dependent Claim
34 words
A device as claimed in claim 2, wherein said carrier means is mounted to be reciprocable relative to said support and a stop is provided to limit the stroke length of said carrier means.
Claim 5
Dependent Claim
20 words
A device as claimed in claim 2, wherein said support is mounted to be pivotable relative to said base member.
Claim 6
Dependent Claim
67 words
A device as clAimed in claim 1, wherein said means for sensing comprises indicating means and a signal generator actuated by the movement of said first sensor through a reference position for generating a signal representative of the position of said one test portion with respect to said testing path when said first sensor is located at the reference position to be applied to said indicating means.
Claim 7
Dependent Claim
15 words
A device as claimed in claim 5, wherein the signal generator comprises a null detector.
Claim 8
Dependent Claim
15 words
A device as claimed in claim 5, wherein the signal generator comprises a pick-up device.
Claim 9
Dependent Claim
23 words
A device as claimed in claim 1, wherein the second sensor comprises a mechanical feeler movable with at least one degree of freedom.
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) | 1978-09-15 | 1979-03-17 | 1979-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-15 | 1983-03-17 | 1983-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-15 | 1987-03-17 | 1987-09-16 | $7700.00 | Window Closed / Lapsed |