GB1187963A - Improvements in the Measurement of Moisture in Sheet Materials. - Google Patents
Improvements in the Measurement of Moisture in Sheet Materials.Info
- Publication number
- GB1187963A GB1187963A GB4508/67A GB450867A GB1187963A GB 1187963 A GB1187963 A GB 1187963A GB 4508/67 A GB4508/67 A GB 4508/67A GB 450867 A GB450867 A GB 450867A GB 1187963 A GB1187963 A GB 1187963A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sheet
- waveguide
- section
- halves
- plane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
- H01Q21/0037—Particular feeding systems linear waveguide fed arrays
- H01Q21/0043—Slotted waveguides
- H01Q21/005—Slotted waveguides arrays
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N22/00—Investigating or analysing materials by the use of microwaves or radio waves, i.e. electromagnetic waves with a wavelength of one millimetre or more
- G01N22/04—Investigating moisture content
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/20—Non-resonant leaky-waveguide or transmission-line antennas; Equivalent structures causing radiation along the transmission path of a guided wave
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/061—Two dimensional planar arrays
- H01Q21/064—Two dimensional planar arrays using horn or slot aerials
Abstract
1,187,963. Microwave heating. MICROWAVE INSTRUMENTS Ltd. 28 April, 1967 [29 April, 1966; 30 Jan., 1967], Nos. 18955/66 and 4508/67. Heading H5H. [Also in Division G1 Microwave apparatus for the measurement of moisture in a sheet W of e.g. paper or fabric comprises a waveguide 2 having an offset section 8 provided with a slit 12 for the reception of the sheet. The slit extends through the obliquely arranged connecting sections 10 and lies in the median E-plane of the section 8. The upper half of the section 8 is mounted upon pivots 22 incoporating spiral springs (not shown) which press the waveguide half against the sheet. Direct contact between the waveguide halves and the sheet may be prevented by allowing controlled escape of a compressed fluid through permeable membranes arranged over the open sides of the two halves. The compressed fluid may be fed directly into the waveguide section 8 through pipes 102, 104, fluid-tight seals 114 of e.g. polythene being provided in the main wave guide 2. Distribution manifolds may be provided on both halves of the section 8. In an alternative construction, compressed fluid is fed into the hollow sides of the waveguide halves and allowed to escape through perforations in the edges opposite the sheet. The main waveguide 2 may be of hairpin configuration either in the H-plane (as shown) or the E-plane. Several such hairpins may be arranged side by side and the sheet passed through them successively. They are coupled by switching means which enable different combinations to be inserted in series between a generator and a detector. In the arrangement shown in Fig. 7, the split waveguide section 8a is short-circuited at 9 and is connected to a power source through a directional coupler 92. The arms of the directional coupler are connected to detectors 94, 96 for measurement and comparison of the incident and reflected waves. In a further modification (Fig. 6, not shown), the cranked portion is arranged to extend parallel to the edges of an elongated sheet and is connected at either end to transversely extending sections respectively providing input and output.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4508/67A GB1187963A (en) | 1966-04-29 | 1966-04-29 | Improvements in the Measurement of Moisture in Sheet Materials. |
| GB21542/67A GB1214467A (en) | 1966-04-29 | 1967-01-30 | Improvements in or relating to microwave apparatus for the processing or measurement of sheet materials |
| DE19671598834 DE1598834A1 (en) | 1966-04-29 | 1967-04-28 | Wave guide for measuring the moisture content of materials |
| US701139A US3488858A (en) | 1966-04-29 | 1968-01-29 | Microwave apparatus for the processing or measurement of sheet materials |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1895566 | 1966-04-29 | ||
| GB4508/67A GB1187963A (en) | 1966-04-29 | 1966-04-29 | Improvements in the Measurement of Moisture in Sheet Materials. |
| GB21542/67A GB1214467A (en) | 1966-04-29 | 1967-01-30 | Improvements in or relating to microwave apparatus for the processing or measurement of sheet materials |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1187963A true GB1187963A (en) | 1970-04-15 |
Family
ID=27254461
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4508/67A Expired GB1187963A (en) | 1966-04-29 | 1966-04-29 | Improvements in the Measurement of Moisture in Sheet Materials. |
| GB21542/67A Expired GB1214467A (en) | 1966-04-29 | 1967-01-30 | Improvements in or relating to microwave apparatus for the processing or measurement of sheet materials |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB21542/67A Expired GB1214467A (en) | 1966-04-29 | 1967-01-30 | Improvements in or relating to microwave apparatus for the processing or measurement of sheet materials |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3488858A (en) |
| DE (1) | DE1598834A1 (en) |
| GB (2) | GB1187963A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2129944A (en) * | 1982-11-08 | 1984-05-23 | Nat Res Dev | Microwave moisture sensor |
| JPS6056261U (en) * | 1983-09-27 | 1985-04-19 | 横河電機株式会社 | microwave moisture meter |
| US5114684A (en) * | 1990-12-13 | 1992-05-19 | Serawaste Systems Corporation | In-line electromagnetic energy wave applicator |
| US5423260A (en) * | 1993-09-22 | 1995-06-13 | Rockwell International Corporation | Device for heating a printed web for a printing press |
| US20060208194A1 (en) * | 2005-03-18 | 2006-09-21 | Voith Paper Patent Gmbh | Microwave mass measuring device and process |
| DE102008018888B4 (en) * | 2008-04-14 | 2014-03-13 | Elisabeth Katz | Device for determining the moisture content of a material web or sheet |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1050493A (en) * | ||||
| DE1218701B (en) * | 1963-04-03 | 1966-06-08 | Menschner Textil Johannes | Gelling device for thin thermoplastic plastic layers |
| US3263052A (en) * | 1963-09-11 | 1966-07-26 | Cryodry Corp | Power distribution system for microwave process chambers |
| SE312390B (en) * | 1964-07-28 | 1969-07-14 | Philips Nv |
-
1966
- 1966-04-29 GB GB4508/67A patent/GB1187963A/en not_active Expired
-
1967
- 1967-01-30 GB GB21542/67A patent/GB1214467A/en not_active Expired
- 1967-04-28 DE DE19671598834 patent/DE1598834A1/en active Pending
-
1968
- 1968-01-29 US US701139A patent/US3488858A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| GB1214467A (en) | 1970-12-02 |
| US3488858A (en) | 1970-01-13 |
| DE1598834A1 (en) | 1971-04-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |