Patent US3947129A successfully refreshed from Google Patents.
US3947129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for contactless measuring of the dimensions of objects
Assignee: Pharos AB
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Filing: 1974-10-03
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Granted: 1976-03-30
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Expires: 1994-10-03
Abstract
Abstract The present invention relates to an apparatus for contactless measuring of dimensions of objects, in particular the measurement of the diameter of moving wire in a wire-mill, whereby the contours of the object in one dimension are arranged by means of an optical system to be projected on an opto-electrical member, the output signal of which being a measure of the dimension wanted.
Inventors
- 👤 Klas Rudolf Wiklund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:55
CPC Classifications
G; G01; G01B; G01B11/00; G01B11/08
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
139 words
Apparatus for contactless measuring of dimensions of a moving object, whereby the contours of the object in one dimension by means of an optic system are arranged to be projected onto an opto-electrical member, the output signal of which is a measure of the dimension to be defined, comprising an optical system having a first part comprising at least one cylindrical lens, the cylindrical axis of which is at right angles to the dimension to be defined and a slit aperture located between said lens and an opto-electrical means, said slit aperture being so arranged that substantially only beams perpendicular to the dimension to be defined pass through said slit aperture, the distance between said opto-electrical means and said slit aperture being adjusted so that the projection of the object falls in the active area of said opto-electrical means.
Claim 2
Dependent Claim
139 words
Apparatus for contactless measuring of dimensions of a moving object, whereby the contours of the object in one dimension by means of an optic system are arranged to be projected onto an opto-electrical member, the output signal of which is a measure of the dimension to be defined, comprising an optical system having a first part comprising at least one cylindrical lens, the cylindrical axis of which is at right angles to the dimension to be defined and a slit aperture located between said lens and an opto-electrical means, said slit aperture being so arranged that substantially only beams perpendicular to the dimension to be defined pass through said slit aperture, the distance between said opto-electrical means and said slit aperture being adjusted so that the projection of the object falls in the active area of said opto-electrical means.
Claim 3
Dependent Claim
41 words
Apparatus according to claim 1, wherein said optical system also comprises a second part located between said aperture and said opto-electrical means, said second part comprising a cylinder lens turned 90° in relation to said cylinder lens in said first part.
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) | 1979-03-30 | 1979-09-29 | 1980-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-30 | 1983-09-29 | 1984-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-30 | 1987-09-29 | 1988-03-30 | $7700.00 | Window Closed / Lapsed |