Patent US3585844A successfully refreshed from Google Patents.
US3585844A
Expired / Lapsed
US
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Measuring device
Assignee: TURMAC TOBACCO CO
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Filing: 1969-09-03
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Granted: 1971-06-22
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Expires: 1989-09-03
Abstract
Abstract A measuring device for measuring the average radial dimension of a string-shaped object is provided with a cylindrical chamber having a passage in its cylindrical wall and a central opening in each of its end walls. The object to be measured is passed through the chamber with gas at a constant pressure being applied to the chamber simultaneously. The chamber also contains a cylindrical body arranged therein which leaves a space between it, the cylindrical wall and a central space as a passage for the object concentrically with the axis of the chamber. The central body serves as a preresistance and together with the pressure flow characteristics of the chamber, assumed to be given, provides a linear relation between the average radial dimension d and the basic pressure P2.
Inventors
- 👤 Josephus D Dornseiffen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:42
CPC Classifications
A; A24; A24C; A24C5/00; A24C5/32; A24C5/34; A24C5/3418; G; G01; G01B; G01B13/00; G01B13/08
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
175 words
Measuring device for measuring the average radial dimension of a bar- or string-shaped object, like e.g. a filter strand or rod, cigarette strand or rod, or similar cylindrical semi- or end product in the tobacco industry, which device is provided with a cylindrical chamber having a passage in its cylindrical wall and a central opening in each of its end walls, through which openings the object, extending from the chamber, can be passed and on which passage a source can be connected for supplying a gas at a constant pressure into the said chamber, characterized in that, a cylindrical body has been arranged within said chamber while leaving a space between it and the cylindrical wall and a central space as a passage for the object concentrically with the axis of the chamber, said cylindrical body serving as a preresistance and being provided with radially directed narrow passages, of which at least the edges of the openings directed to the cylindrical chamber wall are arranged at right angles with respect to the direction of passage.
Claim 2
Dependent Claim
175 words
Measuring device for measuring the average radial dimension of a bar- or string-shaped object, like e.g. a filter strand or rod, cigarette strand or rod, or similar cylindrical semi- or end product in the tobacco industry, which device is provided with a cylindrical chamber having a passage in its cylindrical wall and a central opening in each of its end walls, through which openings the object, extending from the chamber, can be passed and on which passage a source can be connected for supplying a gas at a constant pressure into the said chamber, characterized in that, a cylindrical body has been arranged within said chamber while leaving a space between it and the cylindrical wall and a central space as a passage for the object concentrically with the axis of the chamber, said cylindrical body serving as a preresistance and being provided with radially directed narrow passages, of which at least the edges of the openings directed to the cylindrical chamber wall are arranged at right angles with respect to the direction of passage.
Claim 3
Dependent Claim
40 words
Measuring device according to claim 1, characterized in that the preresistance comprises disc rings, which are mutually spaced by means of distance pieces having a slight radial dimension which impedes as little as possible the gas flow between the rings.
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) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |