FR421978A - Tachymètre - Google Patents

Tachymètre

Info

Publication number
FR421978A
FR421978A FR421978DA FR421978A FR 421978 A FR421978 A FR 421978A FR 421978D A FR421978D A FR 421978DA FR 421978 A FR421978 A FR 421978A
Authority
FR
France
Prior art keywords
tachometer
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)
Inventor
Wilhelm Morell
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR421978A publication Critical patent/FR421978A/fr
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
    • G01P3/02—Devices characterised by the use of mechanical means
    • G01P3/16—Devices characterised by the use of mechanical means by using centrifugal forces of solid masses
    • G01P3/18—Devices characterised by the use of mechanical means by using centrifugal forces of solid masses transferred to the indicator by mechanical means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR421978D 1910-10-29 1910-10-29 Tachymètre Expired FR421978A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR421978T 1910-10-29

Publications (1)

Publication Number Publication Date
FR421978A true FR421978A (fr) 1911-03-09

Family

ID=1464970

Family Applications (1)

Application Number Title Priority Date Filing Date
FR421978D Expired FR421978A (fr) 1910-10-29 1910-10-29 Tachymètre

Country Status (1)

Country Link
FR (1) FR421978A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4953398A (en) * 1987-10-27 1990-09-04 Schlumberger Technology Corp. Method and apparatus for detecting acoustic vibrations in a borehole

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4953398A (en) * 1987-10-27 1990-09-04 Schlumberger Technology Corp. Method and apparatus for detecting acoustic vibrations in a borehole

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