FR710480A - Ressorts à résonance, en particulier pour les commandes à ressort à résonances - Google Patents

Ressorts à résonance, en particulier pour les commandes à ressort à résonances

Info

Publication number
FR710480A
FR710480A FR710480DA FR710480A FR 710480 A FR710480 A FR 710480A FR 710480D A FR710480D A FR 710480DA FR 710480 A FR710480 A FR 710480A
Authority
FR
France
Prior art keywords
resonance
springs
spring controls
controls
resonance spring
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.)
Expired
Application number
Other languages
English (en)
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.)
Landis and Gyr AG
Original Assignee
Landis and Gyr AG
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 Landis and Gyr AG filed Critical Landis and Gyr AG
Application granted granted Critical
Publication of FR710480A publication Critical patent/FR710480A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/30—Electromagnetic relays specially adapted for actuation by AC
    • H01H51/32—Frequency relays; Mechanically-tuned relays

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
FR710480D 1930-03-12 1930-12-27 Ressorts à résonance, en particulier pour les commandes à ressort à résonances Expired FR710480A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH374168X 1930-03-12

Publications (1)

Publication Number Publication Date
FR710480A true FR710480A (fr) 1931-08-24

Family

ID=4513522

Family Applications (1)

Application Number Title Priority Date Filing Date
FR710480D Expired FR710480A (fr) 1930-03-12 1930-12-27 Ressorts à résonance, en particulier pour les commandes à ressort à résonances

Country Status (3)

Country Link
US (1) US1869565A (fr)
FR (1) FR710480A (fr)
GB (1) GB374168A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3038363A (en) * 1959-03-17 1962-06-12 Wurlitzer Co Electronic piano
US3083605A (en) * 1959-10-12 1963-04-02 Reynold H Lewis Magnetic pickup for the bass section of accordion

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2773223A (en) * 1955-05-16 1956-12-04 Gen Dynamics Corp High impedance telephone substation ringer
US3079555A (en) * 1958-01-21 1963-02-26 J B T Instr Inc Vibrating reed electro-responsive device
US3919910A (en) * 1974-10-21 1975-11-18 Robert H Rust Electronic bass instrument

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3038363A (en) * 1959-03-17 1962-06-12 Wurlitzer Co Electronic piano
US3083605A (en) * 1959-10-12 1963-04-02 Reynold H Lewis Magnetic pickup for the bass section of accordion

Also Published As

Publication number Publication date
GB374168A (en) 1932-06-09
US1869565A (en) 1932-08-02

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