Patent CA1176839A successfully refreshed from Google Patents.
CA1176839A
Expired / Lapsed
CA
⏱️ 0.0 years remaining
Length measuring instrument for paper fibres
Assignee: Kajaani Oy
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Filing: 1982-08-25
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Granted: 1984-10-30
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Expires: 2002-08-25
Abstract
Abstract ABSTRACT OF DISCLOSURE A paper fibre length measuring instrument, comprising a capillary tube, through which the fibres to be measured, in a liquid, are passed, and having on one side of the capillary tube a light source and on the opposite side of the capillary tube a photocell from the results of which the lengths of the fibres are determinable. The photocell comprises a diode matrix of which the diodes calculate the fibre length from the image of the passing fibre.
Inventors
- 👤 Tapio Makkonen
Bibliographic Details
Application Number
—
Jurisdiction
CA
Data Source
google_patents
Last Synchronized
2026-11-09 17:16
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/34; G01N33/343; G01B; G01B11/00; G01B11/02; G01N15/00; G01N15/02; G01N15/0205
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
66 words
A paper fibre length measuring instrument comprising a capillary tube through which the fibres to be measured, in a liquid, are passed and having on one side of the capillary tube a light source and on the opposite side of the capillary tube a photocell, the photocell comprising a diode matrix, the diodes of which calculate, from the moving image of the fibre, the fibre length.
Claim 2
Dependent Claim
66 words
A paper fibre length measuring instrument comprising a capillary tube through which the fibres to be measured, in a liquid, are passed and having on one side of the capillary tube a light source and on the opposite side of the capillary tube a photocell, the photocell comprising a diode matrix, the diodes of which calculate, from the moving image of the fibre, the fibre length.
Claim 3
Dependent Claim
20 words
An instrument according to claim 1, wherein between the light source and the diode matrix there are disposed crossed polarizers.
References Cited (Backward Citations)
No citation records indexed.
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