EP1051772A1 - Cover for parabolic devices - Google Patents

Cover for parabolic devices

Info

Publication number
EP1051772A1
EP1051772A1 EP99902005A EP99902005A EP1051772A1 EP 1051772 A1 EP1051772 A1 EP 1051772A1 EP 99902005 A EP99902005 A EP 99902005A EP 99902005 A EP99902005 A EP 99902005A EP 1051772 A1 EP1051772 A1 EP 1051772A1
Authority
EP
European Patent Office
Prior art keywords
horns
cover
shield device
fastening
mounting device
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.)
Ceased
Application number
EP99902005A
Other languages
German (de)
French (fr)
Inventor
Kjetil Christoffersen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SCANDINAVIAN INTERNATIONAL GROUP AS
Original Assignee
Kjetil Christoffersen
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kjetil Christoffersen filed Critical Kjetil Christoffersen
Publication of EP1051772A1 publication Critical patent/EP1051772A1/en
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/247—Supports; Mounting means by structural association with other equipment or articles with receiving set with frequency mixer, e.g. for direct satellite reception or Doppler radar
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome

Definitions

  • This invention relates to a shield device for the microwave horns of parabolic aerials.
  • the shield device is especially intended for the horn of parabolic devices having either fixed mounted horns for receiving signals from 1 degree west - 5 degrees east, or possibly motorized horns.
  • JP patent applications having the publication Nos. 04-111 601, 63-283 204 and 60-105 301 are disclosing covers for protection of the horns against snowfall, icebounding and rainy weather.
  • the covers are rotatable so that snow which have been falling on the upside of the cover will fall off during the rotation of the covers.
  • DE patent 4 116 095 describes a closed tubular protection cap of transparent plastic material having a ventilation aperture at the underside.
  • the object of this invention is to provide a shield device for the microwave horns of parabolic aerials which in addition to the protection of the horns against snowfall, icebounding and rainy weather also shall prevent reduction of the signals at the input to the feedhorn before the microwave horn. It is known among the manufacturers of parabolic aerials that it is just at the input to the feedhorn before the microwave horn that the signals from a satellite is most susceptible during bad weather. Another object of the invention is to provide a shield device which is easy to mount.
  • the shield device according to the invention has a simple structure and can be manufactured at low costs. It is forming an "umbrella" over the horns and prevent reduction of the signals and thereby the picture quality during bad weather.
  • Fig. 1 shows schematically a shield device with a cover and mounting device
  • Fig. 2 is an exploded view of an embodiment of the shield device and the elements for the fastening thereof
  • Fig. 3 shows schematically the shield device on Fig. 2 viewed from the side
  • Fig. 4 is a plan view of the shield device arranged centric in relation to the horn
  • Fig. 5 is a plan view of the shield s device arranged centric in relation to two horns.
  • Fig. 1 of the drawings is showing schematically a shield device according to the invention.
  • the cover 1 is on each side connected to a mounting device 2 and an underplate 3 is by fastening screws 7 arranged for fastening the mounting device 2 o on each side of a bar at the end of which the horns are mounted.
  • the cover 1 is in the form of an approximately 180° arced light conical shell .
  • the cover 1 may also be in the form a part of a cylindrical shell.
  • the cover 1 is made of a transparent plastic material s and arranged around the microwave horns and at a distance from the horns.
  • the cover 1 is “hollow” and forms an "umbrella” over the horns so that the picture quality is not reduced during bad weather. Because the cover 1 is made of a transparent plastic material a possible partly covering of the signal path will not 0 reduce the signals.
  • Fig. 2 of the drawings which is an exploded view is showing an embodiment of the cover 1 and the elements for the fastening thereof to a bar 5 at the end of which the horns 4 are mounted.
  • the cover 1 is in the form of an app- 5 roximately 180° arced part of a cylindrical shell.
  • the cover 1 is on each side connected to a mounting device 2 by screw joints.
  • the mounting device 2 is connected to the bar 5 by means of an underplate 3 and screw joints 7 on each side of the bar 5.
  • the mounting device 2 is connected to the bar 5 in the vicinity of o the end thereof where the horn 4 is mounted.
  • Fig. 3 of the drawings which is a side view of the embodiment on Fig. 2, is showing the position of the cover 1 over and on the sides of the horn 4.
  • the cover 1 may be adjusted in the same angular position as the horn 4 by means of oblong holes 5 6 in the mounting device 2 for the screw joints to the cover 1.
  • Fig. 4 of the drawings which is a schematical plan view, is showing the arrangement of the cover 1 centric in relation to the horn 4.
  • Fig. 5 of the drawings which is a plan view like Fig. 4, is showing the arrangement of the cover 1 centric in relation to two horns 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Aerials With Secondary Devices (AREA)

Abstract

A shield device for the microwave horns (4) of parabolic aerials to protect the horns against snowfall, icebounding and rainy weather. The shield device comprises an approximately 180° arced cover (1) made of a transparent material arranged around the horns (4) and at a distance from the horns (4). The cover (1) is forming an 'umbrella' over the horns (4) and prevent reduction of the signals and thereby the picture quality during bad weather. The cover (1) is on each side connected to a mounting device (2). An underplate (3) is by fastening joints (7) arranged for fastening the mounting device (2) on each side of a bar (5), at the end of which the horns (4) are mounted.

Description

Cover for parabolic devices This invention relates to a shield device for the microwave horns of parabolic aerials. The shield device is especially intended for the horn of parabolic devices having either fixed mounted horns for receiving signals from 1 degree west - 5 degrees east, or possibly motorized horns.
The JP patent applications having the publication Nos. 04-111 601, 63-283 204 and 60-105 301 are disclosing covers for protection of the horns against snowfall, icebounding and rainy weather. The covers are rotatable so that snow which have been falling on the upside of the cover will fall off during the rotation of the covers. DE patent 4 116 095 describes a closed tubular protection cap of transparent plastic material having a ventilation aperture at the underside.
The object of this invention is to provide a shield device for the microwave horns of parabolic aerials which in addition to the protection of the horns against snowfall, icebounding and rainy weather also shall prevent reduction of the signals at the input to the feedhorn before the microwave horn. It is known among the manufacturers of parabolic aerials that it is just at the input to the feedhorn before the microwave horn that the signals from a satellite is most susceptible during bad weather. Another object of the invention is to provide a shield device which is easy to mount.
These objects are achieved according to the invention by the characteristic features of the shield device as disclosed in claim 1. Preferable embodiments of the shield device are stated in the dependent claims.
The shield device according to the invention has a simple structure and can be manufactured at low costs. It is forming an "umbrella" over the horns and prevent reduction of the signals and thereby the picture quality during bad weather.
The invention will now be described with reference to some preferred embodiments and to the drawings, wherein Fig. 1 shows schematically a shield device with a cover and mounting device, Fig. 2 is an exploded view of an embodiment of the shield device and the elements for the fastening thereof, Fig. 3 shows schematically the shield device on Fig. 2 viewed from the side, Fig. 4 is a plan view of the shield device arranged centric in relation to the horn, and Fig. 5 is a plan view of the shield s device arranged centric in relation to two horns.
Fig. 1 of the drawings is showing schematically a shield device according to the invention. The cover 1 is on each side connected to a mounting device 2 and an underplate 3 is by fastening screws 7 arranged for fastening the mounting device 2 o on each side of a bar at the end of which the horns are mounted. The cover 1 is in the form of an approximately 180° arced light conical shell . The cover 1 may also be in the form a part of a cylindrical shell.
The cover 1 is made of a transparent plastic material s and arranged around the microwave horns and at a distance from the horns. The cover 1 is "hollow" and forms an "umbrella" over the horns so that the picture quality is not reduced during bad weather. Because the cover 1 is made of a transparent plastic material a possible partly covering of the signal path will not 0 reduce the signals.
Fig. 2 of the drawings which is an exploded view is showing an embodiment of the cover 1 and the elements for the fastening thereof to a bar 5 at the end of which the horns 4 are mounted. In this embodiment the cover 1 is in the form of an app- 5 roximately 180° arced part of a cylindrical shell. The cover 1 is on each side connected to a mounting device 2 by screw joints. The mounting device 2 is connected to the bar 5 by means of an underplate 3 and screw joints 7 on each side of the bar 5. The mounting device 2 is connected to the bar 5 in the vicinity of o the end thereof where the horn 4 is mounted.
Fig. 3 of the drawings, which is a side view of the embodiment on Fig. 2, is showing the position of the cover 1 over and on the sides of the horn 4. The cover 1 may be adjusted in the same angular position as the horn 4 by means of oblong holes 5 6 in the mounting device 2 for the screw joints to the cover 1. Fig. 4 of the drawings, which is a schematical plan view, is showing the arrangement of the cover 1 centric in relation to the horn 4.
Fig. 5 of the drawings, which is a plan view like Fig. 4, is showing the arrangement of the cover 1 centric in relation to two horns 4.
It will be appreciated that it may be used other fastening means for the cover 1 than the screw joints used in the s disclosed examples of embodiments.
5
0
5
0

Claims

4C l a i m s
1. A shield device for the microwave horns of parabolic aerials, characterized in that the shield device is comprising an approximately 180┬░ arced cover (1) made of a transparent material arranged around the microwave horns (4) and at a distance from the horns ( 4 ) , the cover ( 1 ) is on each side connected to a mounting device (2), an underplate (3) is by fastening joints ( 7 ) arranged for fastening the mounting device ( 2 ) on each side of a bar (5), at the end of which the horns (4) are mounted.
2. A shield device according to claims 1 , characterized in that the cover ( 1 ) is in the form of a part of a light conical shell.
3. A shield device according to claim 1 , characterized in that the cover ( 1 ) is in the form of a part of a cylindrical shell.
EP99902005A 1998-01-23 1999-01-21 Cover for parabolic devices Ceased EP1051772A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NO980297 1998-01-23
NO980297A NO306316B1 (en) 1998-01-23 1998-01-23 Protection screen for satellite dish
PCT/NO1999/000017 WO1999038226A1 (en) 1998-01-23 1999-01-21 Cover for parabolic devices

Publications (1)

Publication Number Publication Date
EP1051772A1 true EP1051772A1 (en) 2000-11-15

Family

ID=19901582

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99902005A Ceased EP1051772A1 (en) 1998-01-23 1999-01-21 Cover for parabolic devices

Country Status (4)

Country Link
EP (1) EP1051772A1 (en)
AU (1) AU2190899A (en)
NO (1) NO306316B1 (en)
WO (1) WO1999038226A1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8625375D0 (en) * 1986-10-23 1986-11-26 Gen Electric Co Plc Protective cover for antenna feed
US4804972A (en) * 1987-02-24 1989-02-14 Schudel Conrad R Monocoque antenna structure
DE4116095A1 (en) * 1991-05-17 1992-11-19 Uwe Heynen Weather guard for parabolic-antenna polariser - comprises transparent plastic cap resistant to UV without dampening or scattering waves
GB2328559B (en) * 1997-07-23 1999-10-27 Keeling Morgan Darren Robert All weather satellite L.N.B cover

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9938226A1 *

Also Published As

Publication number Publication date
WO1999038226A1 (en) 1999-07-29
NO980297D0 (en) 1998-01-23
NO306316B1 (en) 1999-10-18
AU2190899A (en) 1999-08-09
NO980297L (en) 1999-07-26

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Owner name: SCANDINAVIAN INTERNATIONAL GROUP AS

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Inventor name: CHRISTOFFERSEN, KJETIL

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