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FR454887A - Electric tachometer - Google Patents

Electric tachometer

Info

Publication number
FR454887A
FR454887A FR454887DA FR454887A FR 454887 A FR454887 A FR 454887A FR 454887D A FR454887D A FR 454887DA FR 454887 A FR454887 A FR 454887A
Authority
FR
France
Prior art keywords
electric tachometer
tachometer
electric
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
French (fr)
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.)
ELECTRIC TACHOMETER Co
Original Assignee
ELECTRIC TACHOMETER Co
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 ELECTRIC TACHOMETER Co filed Critical ELECTRIC TACHOMETER Co
Application granted granted Critical
Publication of FR454887A publication Critical patent/FR454887A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/46—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring amplitude of generated current or voltage
    • G01P3/465—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring amplitude of generated current or voltage by using dynamo-electro tachometers or electric generator

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR454887D 1913-02-28 1913-02-28 Electric tachometer Expired FR454887A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR454887T 1913-02-28

Publications (1)

Publication Number Publication Date
FR454887A true FR454887A (en) 1913-07-17

Family

ID=1494839

Family Applications (1)

Application Number Title Priority Date Filing Date
FR454887D Expired FR454887A (en) 1913-02-28 1913-02-28 Electric tachometer

Country Status (1)

Country Link
FR (1) FR454887A (en)

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