CH226126A - Wechselsprech-Lautsprecheranlage. - Google Patents

Wechselsprech-Lautsprecheranlage.

Info

Publication number: CH226126A
Authority: CH; Switzerland
Prior art keywords: speaker system; intercom speaker; intercom; speaker
Prior art date: 1940-07-08

Application number

Other languages

English (en)

Inventor

Haftung Licentia Beschraenkter

Original Assignee

Licentia Gmbh

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.)

1940-07-08

Filing date

1942-03-18

Publication date

1943-03-15

1942-03-18 Application filed by Licentia Gmbh filed Critical Licentia Gmbh

1943-03-15 Publication of CH226126A publication Critical patent/CH226126A/de

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M9/00—Arrangements for interconnection not involving centralised switching
- H04M9/001—Two-way communication systems between a limited number of parties
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H51/00—Electromagnetic relays
- H01H51/02—Non-polarised relays
- H01H51/20—Non-polarised relays with two or more independent armatures
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/24—Electromagnetic mechanisms
- H01H71/2454—Electromagnetic mechanisms characterised by the magnetic circuit or active magnetic elements
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/24—Electromagnetic mechanisms
- H01H71/2472—Electromagnetic mechanisms with rotatable armatures
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
- H01J19/28—Non-electron-emitting electrodes; Screens
- H01J19/40—Screens for shielding
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
- H01J5/02—Vessels; Containers; Shields associated therewith; Vacuum locks
- H01J5/08—Vessels; Containers; Shields associated therewith; Vacuum locks provided with coatings on the walls thereof; Selection of materials for the coatings
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B19/00—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source
- H03B19/06—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source by means of discharge device or semiconductor device with more than two electrodes
- H03B19/08—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source by means of discharge device or semiconductor device with more than two electrodes by means of a discharge device
- H03B19/10—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source by means of discharge device or semiconductor device with more than two electrodes by means of a discharge device using multiplication only
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J3/00—Continuous tuning
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
- H03J7/02—Automatic frequency control
- H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
- H03J7/042—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant with reactance tube

Landscapes

Physics & Mathematics (AREA)
Electromagnetism (AREA)
Engineering & Computer Science (AREA)
Signal Processing (AREA)
Transmitters (AREA)

CH226126D 1940-07-08 1942-03-18 Wechselsprech-Lautsprecheranlage. CH226126A (de)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE80740X		1940-07-08
DE190441X		1941-04-19

Publications (1)

Publication Number	Publication Date
CH226126A true CH226126A (de)	1943-03-15

Family

ID=25749771

Family Applications (4)

Application Number	Title	Priority Date	Filing Date
CH226801D CH226801A (de)	1940-07-08	1941-06-09	Messsender zur Erprobung von Kurzwellenempfängern.
CH227017D CH227017A (de)	1940-07-08	1941-11-14	Einrichtung zur elektrischen Steuerung von Schaltvorgängen.
CH224804D CH224804A (de)	1940-07-08	1942-01-16	Verfahren zur Vermeidung einer kapazitiven Verstimmung einer abgestimmten Röhrenstufe bei Auswechslung der Röhre.
CH226126D CH226126A (de)	1940-07-08	1942-03-18	Wechselsprech-Lautsprecheranlage.

Family Applications Before (3)

Application Number	Title	Priority Date	Filing Date
CH226801D CH226801A (de)	1940-07-08	1941-06-09	Messsender zur Erprobung von Kurzwellenempfängern.
CH227017D CH227017A (de)	1940-07-08	1941-11-14	Einrichtung zur elektrischen Steuerung von Schaltvorgängen.
CH224804D CH224804A (de)	1940-07-08	1942-01-16	Verfahren zur Vermeidung einer kapazitiven Verstimmung einer abgestimmten Röhrenstufe bei Auswechslung der Röhre.

Country Status (4)

Country	Link
US (1)	US2340539A (de)
BE (5)	BE444963A (de)
CH (4)	CH226801A (de)
FR (2)	FR880363A (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2457396A (en) *	1942-03-24	1948-12-28	Mini Of Supply	Radio locating apparatus
US2607914A (en) *	1945-02-03	1952-08-19	La Verne R Philpott	Echo ranging circuit
US2460326A (en) *	1945-02-17	1949-02-01	Clarence M Woodruff	Transmitter
DE961268C (de) *	1952-08-30	1957-04-04	Siemens Ag	Schaltungsanordnung fuer Wechselsprech-Lautsprecheranlagen
DE1007813B (de) *	1952-11-05	1957-05-09	Electroacustic Gmbh	Vorrichtung zur Umschaltung der Sprechrichtung in elektroakustischen Wechselsprechanlagen mit einem einzigen zentralen Verstaerker fuer beide Sprechrichtungen

0
- BE BE443603D patent/BE443603A/xx unknown
- BE BE444958D patent/BE444958A/xx unknown
- BE BE444964D patent/BE444964A/xx unknown
- BE BE442138D patent/BE442138A/xx unknown
- BE BE444963D patent/BE444963A/xx unknown
1941
- 1941-06-09 CH CH226801D patent/CH226801A/de unknown
- 1941-07-05 US US401099A patent/US2340539A/en not_active Expired - Lifetime
- 1941-11-14 CH CH227017D patent/CH227017A/de unknown
1942
- 1942-01-16 CH CH224804D patent/CH224804A/de unknown
- 1942-03-18 CH CH226126D patent/CH226126A/de unknown
- 1942-03-20 FR FR880363D patent/FR880363A/fr not_active Expired
- 1942-04-15 FR FR881219D patent/FR881219A/fr not_active Expired

Also Published As

Publication number	Publication date
FR881219A (fr)	1943-04-19
CH227017A (de)	1943-05-15
BE444963A (de)
CH226801A (de)	1943-04-30
CH224804A (de)	1942-12-15
US2340539A (en)	1944-02-01
BE443603A (de)
BE442138A (de)
BE444964A (de)
FR880363A (fr)	1943-03-24
BE444958A (de)

Publication	Publication Date	Title
CH266931A (de)	1950-02-28	Elektroakustischer Umformer.
CH217613A (de)	1941-10-31	Vierpolmagnetsystem.
CH223104A (de)	1942-08-31	Elektrodynamischer Lautsprecher.
CH226656A (de)	1943-04-30	Tragwerk.
NL59483C (nl)	1947-06-16	Geluidinrichting.
CH227747A (de)	1943-06-30	Kapselmikrophon.
CH235152A (de)	1944-11-15	Zweiweg-Fernmeldeanlage.
CH225198A (de)	1943-01-15	Elektroakustischer Wandler.
CH228416A (de)	1943-08-31	Haspelkuve.
FR877604A (fr)	1942-12-11	Membrane de haut-parleur
DK71587C (da)	1950-10-16	Telefonsystem.
DK72131C (da)	1951-02-12	Telefonsystem.
DK71786C (da)	1950-12-04	Telefonanlæg.
DK72591C (da)	1951-06-04	Højttaler.
NL144437B (nl)		Microschakeling.
CH224320A (de)	1942-11-15	Schaltungsanordnung für Kommando-Wechselsprech-Lautsprecheranlage.
DK58367C (da)	1941-01-27	Mikrotelefon.
FR951757A (fr)	1949-11-03	Système téléphonique
DK61470C (da)	1943-10-25	Fyrrist.
ES5976Y (es)	1942-04-16	Vitrina-cartelera anunciadora.
CH227181A (de)	1943-05-31	Lautsprecher.
CH221709A (de)	1942-06-15	Pupinisiertes Fernmeldekabel.
CH219812A (de)	1942-02-28	Telephon.
DK74456C (da)	1952-07-21	Halvautomatisk telefonanlæg.
DK80418C (da)	1956-01-16	Modkoblet forstærker.