DE417093C - Eddy current speedometer with temperature compensation - Google Patents

Eddy current speedometer with temperature compensation

Info

Publication number
DE417093C
DE417093C DESCH70217D DESC070217D DE417093C DE 417093 C DE417093 C DE 417093C DE SCH70217 D DESCH70217 D DE SCH70217D DE SC070217 D DESC070217 D DE SC070217D DE 417093 C DE417093 C DE 417093C
Authority
DE
Germany
Prior art keywords
eddy current
temperature compensation
magnet
current speedometer
speedometer
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
DESCH70217D
Other languages
German (de)
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.)
SCHLENKER GRUSEN J
Original Assignee
SCHLENKER GRUSEN J
Publication date
Priority to DESCH70217D priority Critical patent/DE417093C/en
Application granted granted Critical
Publication of DE417093C publication Critical patent/DE417093C/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
    • G01P3/49—Devices characterised by the use of electric or magnetic means for measuring angular speed using eddy currents
    • G01P3/495—Devices characterised by the use of electric or magnetic means for measuring angular speed using eddy currents where the indicating means responds to forces produced by the eddy currents and the generating magnetic field
    • G01P3/4953—Devices characterised by the use of electric or magnetic means for measuring angular speed using eddy currents where the indicating means responds to forces produced by the eddy currents and the generating magnetic field with a counter for the covered distance incorporated

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)

Description

WirbeIstrom-Geschwindigkeitsmesser mit Temperaturausgleich. Es ist bereits bekannt, bei Wirbelstrom-Geschwindigkeitsmessern den Temperaturausgleich durch eine magnetische Brücke aus Nickelstahl oder aus anderem Stoff mit sogenannten positiven Temperaturkoeffizienten zu erreichen. Während diese bei bisher bekannten Einrichtungen ein besonderes Stück bildet, wird gemäß der Erfindung insofern eine wesentliche Vereinfachung getroffen, als nunmehr bei einem rotierenden Magneten das die Drehbewegung auf das Zählwerk übertragende Mittel, im vorliegenden Fall z. B. eine Schnecke, zugleich die Brücke selbst bildet und aus Nickelstahl o. dgl. hergestellt ist. Diese Schnecke ist mit einer Ausdrehung versehen, in welcher der aus einem radial aufgespaltenen Ring bestehende permanente Magnet eingelassen ist, so daß einerseits wie bisher der Temperaturfehler ausgeglichen und anderseits die Übertragung der Drehbewegung in einfachster Weise vorgenommen wird.Eddy current speedometer with temperature compensation. It is already known about temperature compensation in eddy current speedometers by a magnetic bridge made of nickel steel or other material with so-called to achieve positive temperature coefficient. While this at previously known Facilities forms a special piece, according to the invention is insofar a made substantial simplification than now with a rotating magnet the means transmitting the rotary movement to the counter, in the present case z. B. a snail, at the same time forms the bridge itself and made of nickel steel o. is made. This screw is provided with a recess in which the a permanent magnet consisting of a radially split ring is embedded, so that on the one hand, as before, the temperature error is compensated and, on the other hand, the Transmission of the rotary movement is made in the simplest possible way.

Der Gegenstand der Erßndung ist auf der Zeichnung in beispielsweiser Ausführungsform erläutert. Abb. i ist eine Seitenansicht, Abb. z ein Achsenschnitt und Abb. 3 eine Draufsicht.The subject of the invention is on the drawing in an example Embodiment explained. Fig. I is a side view, Fig. Z is an axial section and Fig. 3 is a plan view.

Der permanente Magnet a hat in an sich bekannter Weise die Form eines radial aufgespaltenen Ringes. Dieser liegt in einer entsprechend ausgesparten Schnecke b, welche die Drehbewegung auf ein Schneckenrad c überträgt. Die Schnecke b besteht in ebenfalls bekannter Weise aus Nickelstahl und überbrückt durch die Einlagerung des Magneten a in der Schnecke b dessen Spalt d. The permanent magnet a has the form of a radially split ring in a manner known per se. This lies in a correspondingly recessed worm b, which transmits the rotary motion to a worm wheel c. The screw b is also made of nickel steel in a known manner and bridges its gap d by the inclusion of the magnet a in the screw b.

Die Schnecke b ist in irgendeiner Weise, wie z. B. durch Schrauben e mit dem Magnet a verbunden, doch ist die Art der Verbindung beliebig.The screw b is in some way, such as. B. by screws e connected to magnet a, but the type of connection is arbitrary.

Endlich ist die Schnecke b mit der üblichen Achse/ versehen.Finally the screw b is provided with the usual axis /.

Claims (1)

PATENT-ANSPRÜCHE: i. Wirbelstrom - Geschwindigkeitsmesser mit Temperaturausgleich durch Ü.berbrükkung des Spaltes eines ringförmigen, radial. gespaltenen permanenten Magneten, dadurch gekennzeichnet, daß die in bekannter Weise aus einem Stoff mit positivem Temperaturkoeffizienten bestehende Brücke gleichzeitig das Übertragungsmittel der Drehbewegung des Magneten auf das Zählwerk bildet. a. Wirbelstrom - Geschwindigkeitsmesser nach Anspruch i, dadurch gekennzeichnet, daß der Magnet in das in bekannter Weise als Schnecke ausgebildete übertragungsmittel passend eingelassen ist. PATENT CLAIMS: i. Eddy current speedometer with temperature compensation by bridging the gap of an annular, radial. split permanent magnet, characterized in that the bridge consisting in a known manner of a substance with a positive temperature coefficient simultaneously forms the transmission means of the rotary movement of the magnet to the counter. a. Eddy current speedometer according to claim i, characterized in that the magnet is suitably embedded in the transmission means designed in a known manner as a worm.
DESCH70217D Eddy current speedometer with temperature compensation Expired DE417093C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DESCH70217D DE417093C (en) Eddy current speedometer with temperature compensation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DESCH70217D DE417093C (en) Eddy current speedometer with temperature compensation

Publications (1)

Publication Number Publication Date
DE417093C true DE417093C (en) 1925-08-07

Family

ID=7439888

Family Applications (1)

Application Number Title Priority Date Filing Date
DESCH70217D Expired DE417093C (en) Eddy current speedometer with temperature compensation

Country Status (1)

Country Link
DE (1) DE417093C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3693459A (en) * 1971-02-10 1972-09-26 Stewart Warner Corp Speedometer and odometer assembly

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3693459A (en) * 1971-02-10 1972-09-26 Stewart Warner Corp Speedometer and odometer assembly

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