BE549035A - - Google Patents

Info

Publication number
BE549035A
BE549035A BE549035DA BE549035A BE 549035 A BE549035 A BE 549035A BE 549035D A BE549035D A BE 549035DA BE 549035 A BE549035 A BE 549035A
Authority
BE
Belgium
Prior art keywords
emi
frequency
blades
vibrating
tuned
Prior art date
Application number
Other languages
English (en)
French (fr)
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 BE549035A publication Critical patent/BE549035A/fr

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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/10—Characterised by the construction of the motor unit the motor being of diaphragm type
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Toys (AREA)
BE549035D 1955-11-02 BE549035A (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1135090T 1955-11-02

Publications (1)

Publication Number Publication Date
BE549035A true BE549035A (enrdf_load_stackoverflow)

Family

ID=9639662

Family Applications (1)

Application Number Title Priority Date Filing Date
BE549035D BE549035A (enrdf_load_stackoverflow) 1955-11-02

Country Status (3)

Country Link
BE (1) BE549035A (enrdf_load_stackoverflow)
CH (1) CH330291A (enrdf_load_stackoverflow)
FR (1) FR1135090A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
FR1135090A (fr) 1957-04-24
CH330291A (fr) 1958-05-31

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