Patent US3419723A successfully refreshed from Google Patents.
US3419723A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for checking a web of material as to uniformity
Assignee: KONINKLIJKE NEDERLANDSE TEXTIEL UNIE NV
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Filing: 1965-11-09
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Granted: 1968-12-31
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Expires: 1985-11-09
Abstract
No abstract record available.
Inventors
- 👤 Germans Fedde Hendrik
- 👤 Vos Pieter Rense
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:46
CPC Classifications
D; D06; D06H; D06H3/00; D06H3/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
AN APPARATUS FOR CHECKING A WEB OF FABRIC AS TO UNIFORMITY, WHICH COMPRISES MEANS PROVIDING A CONVEX CYLINDRICAL GUIDE SURFACE HAVING A STRAIGHT GENERATRIX FOR GUIDING THE WEB OF MATERIAL TO BE CHECKED ACROSS SAID SURFACE PARALLEL TO THE GENERATRIX THEREOF, A CIRCULAR ARCUATE BAND-LIKE ZONE OF THE GUIDE SURFACE TRANSMITTING LIGHT THERETHROUGH, A MIRROR POSITIONED INWARDLY OF THE GUIDE SURFACE ON THE AXIS OF SAID CIRCULAR ARCUATE BANDLIKE ZONE, A LIGHT SOURCE POSITIONED OUTWARDLY OF THE GUIDE
Claim 2
Independent Claim
78 words
AN APPARATUS FOR CHECKING A WEB OF FABRIC AS TO UNIFORMITY, WHICH COMPRISES MEANS PROVIDING A CONVEX CYLINDRICAL GUIDE SURFACE HAVING A STRAIGHT GENERATRIX FOR GUIDING THE WEB OF MATERIAL TO BE CHECKED ACROSS SAID SURFACE PARALLEL TO THE GENERATRIX THEREOF, A CIRCULAR ARCUATE BAND-LIKE ZONE OF THE GUIDE SURFACE TRANSMITTING LIGHT THERETHROUGH, A MIRROR POSITIONED INWARDLY OF THE GUIDE SURFACE ON THE AXIS OF SAID CIRCULAR ARCUATE BANDLIKE ZONE, A LIGHT SOURCE POSITIONED OUTWARDLY OF THE GUIDE
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) | 1971-12-31 | 1972-07-01 | 1972-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-31 | 1976-07-01 | 1976-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-31 | 1980-07-01 | 1980-12-31 | $7700.00 | Window Closed / Lapsed |