EP0137380A2
Expired / Lapsed
EP
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Optical weft sensor for air jet weaving looms
Assignee: Roj Electrotex SpA
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Filing: 1984-09-20
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Granted: —
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Expires: 2004-09-20
Abstract
Abstract O An optical sensor of the barrier type for air jet weaving looms comprises two equally orientated, parallel photoelements and two very thin total-reflection optical prisms aligned with the photoelements and insertable between and the reed blades in order to deviate the light rays between said photoelements so that they cross the weft yarn passage channel in the reed.
Inventors
- 👤 Paolo Bobbola
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 17:44
CPC Classifications
D; D03; D03D; D03D51/00; D03D51/18; D03D51/34
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
71 words
1) An optical weft sensor of the optical barrier type for air jet weaving looms to be inserted in the reed of the loom, characterised by comprising two equally orientated, parallel photoelements and two very thin total-reflection optical prisms aligned with the photoelements and insertable between the reed blades in order to deviate the light rays between said photoelements so that they cross the weft yarn passage channel in the reed.
Claim 2
Dependent Claim
71 words
1) An optical weft sensor of the optical barrier type for air jet weaving looms to be inserted in the reed of the loom, characterised by comprising two equally orientated, parallel photoelements and two very thin total-reflection optical prisms aligned with the photoelements and insertable between the reed blades in order to deviate the light rays between said photoelements so that they cross the weft yarn passage channel in the reed.
Claim 3
Dependent Claim
55 words
2) An optical weft sensor as claimed in claim 1, wherein said optical prisms are fixed rigidly to a casing external to the reed and associable with it, and which also houses the photosensitive elements and from which said prisms project so that they can be inserted in the required position between two reed blades.
References Cited (Backward Citations)
No citation records indexed.
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