NL158378B - Stofzuiger. - Google Patents

Stofzuiger.

Info

Publication number
NL158378B
NL158378B NL7115730.A NL158378DA NL158378B NL 158378 B NL158378 B NL 158378B NL 158378D A NL158378D A NL 158378DA NL 158378 B NL158378 B NL 158378B
Authority
NL
Netherlands
Prior art keywords
vacuum cleaner
cleaner
vacuum
Prior art date
Application number
NL7115730.A
Other languages
English (en)
Inventor
Lieuwe Sikkema
Original Assignee
Philips Nv
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 NL158378B publication Critical patent/NL158378B/nl

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01J—MANUFACTURE OF DAIRY PRODUCTS
    • A01J7/00—Accessories for milking machines or devices
    • A01J7/02—Accessories for milking machines or devices for cleaning or sanitising milking machines or devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/02—Refracting or diffracting devices, e.g. lens, prism
    • H01Q15/12—Refracting or diffracting devices, e.g. lens, prism functioning also as polarisation filter
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/12—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems
    • H01Q3/14—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems for varying the relative position of primary active element and a refracting or diffracting device
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/38—Impedance-matching networks
    • H03H7/40—Automatic matching of load impedance to source impedance

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Animal Husbandry (AREA)
  • Environmental Sciences (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Transmitters (AREA)
  • Details Of Aerials (AREA)
  • Aerials With Secondary Devices (AREA)
  • Waveguide Aerials (AREA)
NL7115730.A 1950-01-12 Stofzuiger. NL158378B (nl)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US138138A US2640930A (en) 1950-01-12 1950-01-12 Antenna assembly

Publications (1)

Publication Number Publication Date
NL158378B true NL158378B (nl)

Family

ID=22480591

Family Applications (2)

Application Number Title Priority Date Filing Date
NL7115730.A NL158378B (nl) 1950-01-12 Stofzuiger.
NL158378A NL80176C (nl) 1950-01-12 1951-01-05

Family Applications After (1)

Application Number Title Priority Date Filing Date
NL158378A NL80176C (nl) 1950-01-12 1951-01-05

Country Status (7)

Country Link
US (2) US2640930A (nl)
BE (1) BE500563A (nl)
CH (1) CH293157A (nl)
DE (2) DE831419C (nl)
FR (6) FR1035591A (nl)
GB (1) GB680512A (nl)
NL (2) NL80176C (nl)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL82418C (nl) * 1951-06-02
US2836823A (en) * 1952-12-19 1958-05-27 Paul A Kennebeck Wave guide transmitting antenna
US2834013A (en) * 1953-09-02 1958-05-06 Itt Plural antenna assembly
CH326809A (de) * 1954-11-11 1957-12-31 Patelhold Patentverwertung Richtantennensystem mit Umlenkspiegeln
US2938208A (en) * 1955-01-05 1960-05-24 Itt Omnirange beacon antenna having rotating parasitic conductive elements
DE958747C (de) * 1955-03-24 1957-02-21 Int Standard Electric Corp Antennenanordnung fuer ein Drehfunkfeuer
DE1019355B (de) * 1955-07-25 1957-11-14 Int Standard Electric Corp Breitband-Richtantennensystem
DE1059055B (de) * 1956-08-21 1959-06-11 Collins Radio Co Senderantenne fuer Drehfunkfeuer
US2985876A (en) * 1957-01-23 1961-05-23 Marconi Wireless Telegraph Co Aerial systems
US2993204A (en) * 1958-02-28 1961-07-18 Itt Two-band helical antenna
US3003126A (en) * 1958-12-08 1961-10-03 Jasik Henry Impedance transformer
US3262075A (en) * 1961-11-07 1966-07-19 Anzac Electronics Inc Impedance matching transformer
US3281721A (en) * 1962-05-11 1966-10-25 Sperry Rand Corp Impedance matching system
US3179941A (en) * 1962-08-17 1965-04-20 Dynascan Corp Helical antenna with adjustable length by switching
US3381222A (en) * 1964-06-12 1968-04-30 John L. Gray Radio telephone with automatically tuned loaded antenna
US3412403A (en) * 1964-12-22 1968-11-19 Carl I. Peters Jr. Radiating tuned inductance coil antenna
US3262119A (en) * 1965-07-30 1966-07-19 Bendix Corp Cavity backed slot antenna with rotatable loop feed
US3601717A (en) * 1969-11-20 1971-08-24 Gen Dynamics Corp System for automatically matching a radio frequency power output circuit to a load
US4064474A (en) * 1976-11-09 1977-12-20 Solitron Devices, Inc. Impedance ratio varying device
EP0106082B1 (de) * 1982-09-10 1986-12-17 Bayer Ag Neue Polyphosphate, deren Herstellung und Verwendung
US4803493A (en) * 1986-12-01 1989-02-07 Jamison Wayne L Mobile antenna circuit with variable line length
US6653803B1 (en) * 2000-05-30 2003-11-25 Axcelis Technologies, Inc. Integrated resonator and amplifier system
US7176840B1 (en) 2005-04-08 2007-02-13 Michael Peter Kelley Variable spacing inductance coil apparatus and method
US20070248116A1 (en) 2006-04-21 2007-10-25 Masashi Hamada Communication control apparatus and method of controlling same
FR3045838B1 (fr) * 2015-12-18 2020-05-22 Thales Antenne multi-acces
CN106785368B (zh) * 2016-12-26 2019-08-02 广东中元创新科技有限公司 一种多瓣高增益uv全向带am天线
US11923924B2 (en) * 2018-02-26 2024-03-05 Parallel Wireless, Inc. Miniature antenna array with polar combining architecture

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1860123A (en) * 1925-12-29 1932-05-24 Rca Corp Variable directional electric wave generating device
US1912754A (en) * 1929-06-11 1933-06-06 Telefunken Gmbh Antenna
GB553970A (en) * 1941-12-09 1943-06-11 Standard Telephones Cables Ltd Improvements in or relating to antenna systems
US2465416A (en) * 1943-10-02 1949-03-29 Zenith Radio Corp Resonant circuit and radiator
US2498078A (en) * 1945-03-30 1950-02-21 Bell Telephone Labor Inc Common control for electrical tuners and couplers
US2515436A (en) * 1945-10-04 1950-07-18 Radio Ind Tuning device for true antennas
US2532919A (en) * 1947-04-21 1950-12-05 Johnson William Arthur Radio aerial system, and particularly directive aerial system
US2532920A (en) * 1947-04-21 1950-12-05 Johnson William Arthur Radio aerial system, and particularly directive aerial system
US2657362A (en) * 1951-05-15 1953-10-27 Aeronautical Comm Equipment In Impedance matching network
US2745067A (en) * 1951-06-28 1956-05-08 True Virgil Automatic impedance matching apparatus

Also Published As

Publication number Publication date
FR64853E (fr) 1955-12-14
US2855599A (en) 1958-10-07
CH293157A (fr) 1953-09-15
FR67351E (fr) 1958-03-06
FR78739E (fr) 1962-08-31
FR70739E (fr) 1959-07-10
DE901665C (de) 1954-01-14
BE500563A (nl) 1952-11-12
FR64511E (fr) 1955-11-14
GB680512A (en) 1952-10-08
US2640930A (en) 1953-06-02
DE831419C (de) 1952-02-14
FR1035591A (fr) 1953-08-26
NL80176C (nl) 1955-08-15

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