US2992313A - Antenna heat placement - Google Patents

Antenna heat placement Download PDF

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Publication number
US2992313A
US2992313A US744245A US74424558A US2992313A US 2992313 A US2992313 A US 2992313A US 744245 A US744245 A US 744245A US 74424558 A US74424558 A US 74424558A US 2992313 A US2992313 A US 2992313A
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Prior art keywords
antenna
bushing
tube
placement
duct
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Expired - Lifetime
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US744245A
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Robert S Taylor
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/02—Arrangements for de-icing; Arrangements for drying-out ; Arrangements for cooling; Arrangements for preventing corrosion

Definitions

  • This invention relates to heat placement and more particularly to an electrical conductor such as an antenna of which the surface is maintained at temperatures above the ambient with an hermetically sealed duct containing halogenated hydrocarbon fluid which in liquid phase drains to a part which is heated to keep the duct filled with hot vapor.
  • the object of this invention is to obviate such hazard by providing a heat placement system that prevents the ice formation.
  • an antenna is formed by a metal tube spun closed and soldered at its upper end 11 to hermetically seal this end of the duct 12 within the antenna tube.
  • the other end of the antenna tube 10 is fitted with a threaded plug 13 having a center bore or passageway 14.
  • the plug 13 is hermetically sealed to the tube 10 as by silver solder, and a soft copper tube 15 is similarly joined to the plug 13 to form an extension of the passage 14.
  • the hollow antenna is evacuated by a pump connected to the tube 15 and then a charge of dichlorodifluoromethane, or other suitable halogenated hydrocarbon fluid, is introduced into the hollow conductor through the tube 15 which is then pinched closed and hermetically sealed by solder at the end 16.
  • An insulating bushing 17 of porcelain or other suitable dielectric material is secured on the lower end of the antenna 10 between a ledge 18, formed by a washer silver soldered on the hollow rod, and a nut 19 threaded on the plug 13 and holding a hard washer 20 and a soft washer 21 against the bottom of the bushing 17.
  • the antenna lead 22 is secured on the plug 13 by a second nut 23.
  • a soft washer or gasket 32 is located between the ledge 18 and the upper end of the bushing 17.
  • an annular electric heating element 24 from which leads 25 and 26 project through slots in the lower edge of the bushing for connection to a suitable source of electric current for operating the heater.
  • the antenna is shown mounted on the skin sheet 27 of an aeroplane.
  • the bushing 17 has an annular shoulder 28 which abuts a soft washer 29 and the inside of the sheet 27 with the bushing and antenna projecting through a hole in the sheet.
  • a retaining ring 30 engages the shoulder 28 and is secured to the sheet 27 by four bolts 31.
  • the antenna can be mounted in any position such that liquid drains by gravity down the duct 12 to the vicinity of the heater 24. With the latter in operation the fluid in liquid phase is heated to vapor which fills the hollow antenna and maintains it at an elevated temperature to prevent formation of ice on the antenna and bushing.
  • the heater 24 can be formed as part of the bushing 17 or as a separate unit. Various other changes and modifications may be made within the scope of the invention as set forth in the following claim.
  • An antenna comprising; an electrical conductor embodying an hermetically sealed fluid holding duct containing a halogenated hydrocarbon fluid, part of said conductor requiring freedom from snow and ice and containing a portion of said duct so arranged as to receive vapor from and drain liquid to a second part of the duct, and a heater arranged to apply heat to said second part.

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Description

July 11, 1961 R. s. TAYLOR 2,992,313
ANTENNA HEAT PLACEMENT Filed June 24, 1958 l: 1 H i; I8
l5 INVENTOR ROBERT s. TAYLOR X 2022 ATTORNEY United States Patent 2,992,313 ANTENNA HEAT PLACEMENT Robert S. Taylor, Evansville, Ind. (2906 Cedarview Drive, Austin 4, Tex.) Filed June 24, 1958, Ser. No. 744,245 1 Claim. (Cl. 219-19) This invention relates to heat placement and more particularly to an electrical conductor such as an antenna of which the surface is maintained at temperatures above the ambient with an hermetically sealed duct containing halogenated hydrocarbon fluid which in liquid phase drains to a part which is heated to keep the duct filled with hot vapor.
Distortion or failure of radio, television, or radar by formation of ice on the antenna is annoying at anytime, but in navigation the consequences can be serious. The object of this invention is to obviate such hazard by providing a heat placement system that prevents the ice formation.
The object and advantages of the invention will be more fully understood from reference to the description taken in connection with the drawing which is an elevation partly in cross section of a so-called buggy whip type of antenna embodying the invention.
Referring to the drawing, an antenna is formed by a metal tube spun closed and soldered at its upper end 11 to hermetically seal this end of the duct 12 within the antenna tube. The other end of the antenna tube 10 is fitted with a threaded plug 13 having a center bore or passageway 14. The plug 13 is hermetically sealed to the tube 10 as by silver solder, and a soft copper tube 15 is similarly joined to the plug 13 to form an extension of the passage 14.
The hollow antenna is evacuated by a pump connected to the tube 15 and then a charge of dichlorodifluoromethane, or other suitable halogenated hydrocarbon fluid, is introduced into the hollow conductor through the tube 15 which is then pinched closed and hermetically sealed by solder at the end 16.
An insulating bushing 17 of porcelain or other suitable dielectric material is secured on the lower end of the antenna 10 between a ledge 18, formed by a washer silver soldered on the hollow rod, and a nut 19 threaded on the plug 13 and holding a hard washer 20 and a soft washer 21 against the bottom of the bushing 17. The antenna lead 22 is secured on the plug 13 by a second nut 23. A soft washer or gasket 32 is located between the ledge 18 and the upper end of the bushing 17.
Around the antenna tube 10 within the bushing 17 is located an annular electric heating element 24 from which leads 25 and 26 project through slots in the lower edge of the bushing for connection to a suitable source of electric current for operating the heater.
The antenna is shown mounted on the skin sheet 27 of an aeroplane. The bushing 17 has an annular shoulder 28 which abuts a soft washer 29 and the inside of the sheet 27 with the bushing and antenna projecting through a hole in the sheet. A retaining ring 30 engages the shoulder 28 and is secured to the sheet 27 by four bolts 31.
The antenna can be mounted in any position such that liquid drains by gravity down the duct 12 to the vicinity of the heater 24. With the latter in operation the fluid in liquid phase is heated to vapor which fills the hollow antenna and maintains it at an elevated temperature to prevent formation of ice on the antenna and bushing.
The heater 24 can be formed as part of the bushing 17 or as a separate unit. Various other changes and modifications may be made within the scope of the invention as set forth in the following claim.
What is claimed is:
An antenna comprising; an electrical conductor embodying an hermetically sealed fluid holding duct containing a halogenated hydrocarbon fluid, part of said conductor requiring freedom from snow and ice and containing a portion of said duct so arranged as to receive vapor from and drain liquid to a second part of the duct, and a heater arranged to apply heat to said second part.
References Cited in the file of this patent UNITED STATES PATENTS 529,304 Perkins Nov. 13, 1894 1,676,068 Bayer July 13, 1928 1,904,140 Hentschel Apr. 19, 1933 1,904,771 Hentschel Apr. 19,1933 2,007,007 Snell July 2, 1935 2,142,117 Dow Jan. 3, 1939 2,237,054 Jensen Apr. 1, 1941 2,285,588 Kirkes June 9, 1942 2,678,374 Jones et al May 11, 1954 2,760,191 Blackmer et a1 Aug. 21, 1956 FOREIGN PATENTS 326,309 Germany Sept. 24, 1920
US744245A 1958-06-24 1958-06-24 Antenna heat placement Expired - Lifetime US2992313A (en)

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3484583A (en) * 1968-07-23 1969-12-16 Ppg Industries Inc Combination of electrically heated transparent window and antenna
US3484584A (en) * 1968-07-23 1969-12-16 Ppg Industries Inc Combination of electrically heated transparent window and antenna
US3889096A (en) * 1970-07-11 1975-06-10 Philips Corp Electric soldering iron delivering heat by change of state of a liquid heat transporting medium
US4105895A (en) * 1976-02-02 1978-08-08 Electro-Therm, Inc. Electric water heater utilizing a heat pipe
US4131785A (en) * 1976-02-18 1978-12-26 Electro-Therm, Inc. Electrically heated liquid tank employing heat pipe heat transfer means
US4275603A (en) * 1979-11-23 1981-06-30 The Boeing Company Indirectly heated aircraft probes and masts
US4313423A (en) * 1978-06-02 1982-02-02 Mahdjuri Faramarz S Solar collector with heat pipe
US4903035A (en) * 1983-12-20 1990-02-20 Bsh Electronics, Ltd. Electrical signal separating device having isolating and matching circuitry
US4903034A (en) * 1983-12-20 1990-02-20 Bsh Electronics, Ltd. Electrical signal separating device having isolating and matching circuitry
US4928108A (en) * 1983-12-20 1990-05-22 Bsh Electronics, Ltd. Electrical signal separating device having isolating and matching circuitry for split passband matching
US6591696B2 (en) * 2001-07-12 2003-07-15 Rosemount Aerospace, Inc. Integral electric pressure probe for aircraft
US20170029123A1 (en) * 2015-07-28 2017-02-02 Thales Heating for an avionic equipment
US10183753B2 (en) * 2015-07-28 2019-01-22 Thales Avionic equipment heating

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US529304A (en) * 1894-11-13 ludlow pattox perkins
DE326309C (en) * 1913-03-12 1920-09-24 Wilhelm Boettger Dr Closed iron pipe for heating with partial filling to transfer the heat from the fireplace to the place of use
US1676068A (en) * 1925-05-22 1928-07-03 Bayer Gaudenz Refrigerating apparatus
US1904771A (en) * 1930-05-23 1933-04-18 Wired Radio Inc Constant frequency control apparatus
US1904140A (en) * 1930-05-23 1933-04-18 Wired Radio Inc Frequency control apparatus
US2007007A (en) * 1932-06-04 1935-07-02 Snell Foster Dee Heat transfer liquid
US2142117A (en) * 1937-03-18 1939-01-03 Jennings B Dow Antenna system
US2237054A (en) * 1937-11-13 1941-04-01 Donald G Jensen Heating equipment
US2285588A (en) * 1941-07-10 1942-06-09 Clyde J Kirkes Radio antenna
US2678374A (en) * 1953-02-13 1954-05-11 W A Riggs Television antenna defroster
US2760191A (en) * 1955-02-15 1956-08-21 David E Blackmer De-icing apparatus

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US529304A (en) * 1894-11-13 ludlow pattox perkins
DE326309C (en) * 1913-03-12 1920-09-24 Wilhelm Boettger Dr Closed iron pipe for heating with partial filling to transfer the heat from the fireplace to the place of use
US1676068A (en) * 1925-05-22 1928-07-03 Bayer Gaudenz Refrigerating apparatus
US1904771A (en) * 1930-05-23 1933-04-18 Wired Radio Inc Constant frequency control apparatus
US1904140A (en) * 1930-05-23 1933-04-18 Wired Radio Inc Frequency control apparatus
US2007007A (en) * 1932-06-04 1935-07-02 Snell Foster Dee Heat transfer liquid
US2142117A (en) * 1937-03-18 1939-01-03 Jennings B Dow Antenna system
US2237054A (en) * 1937-11-13 1941-04-01 Donald G Jensen Heating equipment
US2285588A (en) * 1941-07-10 1942-06-09 Clyde J Kirkes Radio antenna
US2678374A (en) * 1953-02-13 1954-05-11 W A Riggs Television antenna defroster
US2760191A (en) * 1955-02-15 1956-08-21 David E Blackmer De-icing apparatus

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3484583A (en) * 1968-07-23 1969-12-16 Ppg Industries Inc Combination of electrically heated transparent window and antenna
US3484584A (en) * 1968-07-23 1969-12-16 Ppg Industries Inc Combination of electrically heated transparent window and antenna
US3889096A (en) * 1970-07-11 1975-06-10 Philips Corp Electric soldering iron delivering heat by change of state of a liquid heat transporting medium
US4105895A (en) * 1976-02-02 1978-08-08 Electro-Therm, Inc. Electric water heater utilizing a heat pipe
US4131785A (en) * 1976-02-18 1978-12-26 Electro-Therm, Inc. Electrically heated liquid tank employing heat pipe heat transfer means
US4313423A (en) * 1978-06-02 1982-02-02 Mahdjuri Faramarz S Solar collector with heat pipe
US4275603A (en) * 1979-11-23 1981-06-30 The Boeing Company Indirectly heated aircraft probes and masts
US4903034A (en) * 1983-12-20 1990-02-20 Bsh Electronics, Ltd. Electrical signal separating device having isolating and matching circuitry
US4903035A (en) * 1983-12-20 1990-02-20 Bsh Electronics, Ltd. Electrical signal separating device having isolating and matching circuitry
US4928108A (en) * 1983-12-20 1990-05-22 Bsh Electronics, Ltd. Electrical signal separating device having isolating and matching circuitry for split passband matching
US6591696B2 (en) * 2001-07-12 2003-07-15 Rosemount Aerospace, Inc. Integral electric pressure probe for aircraft
US20170029123A1 (en) * 2015-07-28 2017-02-02 Thales Heating for an avionic equipment
GB2541994A (en) * 2015-07-28 2017-03-08 Thales Sa Heating for an avionic equipment
US10183753B2 (en) * 2015-07-28 2019-01-22 Thales Avionic equipment heating
US10472074B2 (en) * 2015-07-28 2019-11-12 Thales Heating for an avionic equipment
GB2541994B (en) * 2015-07-28 2021-05-26 Thales Sa Heating for an avionic equipment

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