NL81953C - - Google Patents

Info

Publication number
NL81953C
NL81953C NL81953DA NL81953C NL 81953 C NL81953 C NL 81953C NL 81953D A NL81953D A NL 81953DA NL 81953 C NL81953 C NL 81953C
Authority
NL
Netherlands
Application number
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.)
Publication of NL81953C publication Critical patent/NL81953C/xx
Priority claimed from GB1603845A external-priority patent/GB594039A/en

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D3/00—Control of position or direction
    • G05D3/12—Control of position or direction using feedback
    • G05D3/14—Control of position or direction using feedback using an analogue comparing device
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
    • G01S3/14—Systems for determining direction or deviation from predetermined direction
    • G01S3/38—Systems for determining direction or deviation from predetermined direction using adjustment of real or effective orientation of directivity characteristic of an antenna or an antenna system to give a desired condition of signal derived from that antenna or antenna system, e.g. to give a maximum or minimum signal
    • G01S3/42—Systems for determining direction or deviation from predetermined direction using adjustment of real or effective orientation of directivity characteristic of an antenna or an antenna system to give a desired condition of signal derived from that antenna or antenna system, e.g. to give a maximum or minimum signal the desired condition being maintained automatically

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Control Of Multiple Motors (AREA)
NL81953D 1945-06-22 NL81953C (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1603845A GB594039A (en) 1945-06-22 Improvements in and relating to automatic position control means, more especially for adjustable aerial systems such as rotatable aerials for automatic radio direction fi nding equipment

Publications (1)

Publication Number Publication Date
NL81953C true NL81953C (fr)

Family

ID=10070013

Family Applications (1)

Application Number Title Priority Date Filing Date
NL81953D NL81953C (fr) 1945-06-22

Country Status (2)

Country Link
US (1) US2487429A (fr)
NL (1) NL81953C (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2806191A (en) * 1948-11-02 1957-09-10 Pollopas Patents Ltd Electric motor driving arrangement
NL173647B (nl) * 1951-11-08 Naphtachimie Sa Werkwijze voor de bereiding van katalysatoren voor de polymerisatie van alkenen, werkwijze voor de bereiding van polymeren of copolymeren en gevormde voortbrengselen, vervaardigd onder toepassing van de aldus bereide polymeren of copolymeren.
US2726544A (en) * 1952-08-15 1955-12-13 Bendix Aviat Corp Rate of change indicator
DE1066299B (de) * 1957-08-22 1959-10-01 Rockweld Ltd. und David James Wilson Boag, Croydon, Surrey (Großbritannien) Elektroden-Vorschub-Regelanordnung mit zwei Motoren und Differentialgetriebe
FR3033870B1 (fr) * 2015-03-18 2018-08-31 Carrier Corporation Panneau pour une centrale de traitement d'air, methode d'assemblage d'un tel panneau et centrale de traitement d'air comprenant un tel panneau

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1703317A (en) * 1925-04-08 1929-02-26 Minorsky Nicolai Automatic steering device
US1669107A (en) * 1927-05-09 1928-05-08 Gen Electric Automatic controller
US1975023A (en) * 1932-10-27 1934-09-25 Paul Duclos Ets Remote control device
FR832512A (fr) * 1937-05-13 1938-09-28 Ind Radioelectriques Sa Des Radio compas automatique perfectionné
US2257757A (en) * 1937-10-22 1941-10-07 Sperry Gyroscope Co Inc Radio compass navigation apparatus
US2361956A (en) * 1938-12-09 1944-11-07 Sperry Gyroscope Co Inc Automatic position indicating system
US2422180A (en) * 1943-06-08 1947-06-17 Westinghouse Electric Corp Antenna positioning control

Also Published As

Publication number Publication date
US2487429A (en) 1949-11-08

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