EP1310854A1 - Lever-type control device for transmitting electrical signals - Google Patents

Lever-type control device for transmitting electrical signals Download PDF

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Publication number
EP1310854A1
EP1310854A1 EP02024903A EP02024903A EP1310854A1 EP 1310854 A1 EP1310854 A1 EP 1310854A1 EP 02024903 A EP02024903 A EP 02024903A EP 02024903 A EP02024903 A EP 02024903A EP 1310854 A1 EP1310854 A1 EP 1310854A1
Authority
EP
European Patent Office
Prior art keywords
spherical element
axis
lever
rod
seat
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.)
Granted
Application number
EP02024903A
Other languages
German (de)
French (fr)
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EP1310854B1 (en
Inventor
Luciano Franzoni
Renzo Gandolfi
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.)
IPC Srl
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IPC Srl
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Filing date
Publication date
Application filed by IPC Srl filed Critical IPC Srl
Publication of EP1310854A1 publication Critical patent/EP1310854A1/en
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Publication of EP1310854B1 publication Critical patent/EP1310854B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G9/00—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously
    • G05G9/02—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only
    • G05G9/04—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only in which movement in two or more ways can occur simultaneously
    • G05G9/047—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only in which movement in two or more ways can occur simultaneously the controlling member being movable by hand about orthogonal axes, e.g. joysticks
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G9/00—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously
    • G05G9/02—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only
    • G05G9/04—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only in which movement in two or more ways can occur simultaneously
    • G05G9/047—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only in which movement in two or more ways can occur simultaneously the controlling member being movable by hand about orthogonal axes, e.g. joysticks
    • G05G2009/0474—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only in which movement in two or more ways can occur simultaneously the controlling member being movable by hand about orthogonal axes, e.g. joysticks characterised by means converting mechanical movement into electric signals
    • G05G2009/04755—Magnetic sensor, e.g. hall generator, pick-up coil

Definitions

  • the present invention relates to a lever-type control device for transmitting electrical signals.
  • control devices that are used commonly in self-propelled machines, such as for example overhead platforms, and comprise a lever that is meant to be actuated rotationally by the operator in order to vary the position of permanent magnets with respect to one or more fixed sensors.
  • the electrical signals emitted by said sensors are consequently influenced thereby in proportion to the movements of the lever, and therefore an appropriate processing of said signals, performed by an electronic board, allows to transmit to the actuators and servo systems that are present on the machine provided with the device, such as for example motors or actuation cylinders, commands that are also proportional to said movements.
  • a lever-type control device for transmitting electrical signals characterized in that it comprises, in order to form said lever, a spherical element for emitting at least one magnetic field that is connected to the end of a radial rod meant to be actuated at the other end, said spherical element being contained within a seat that comprises means suitable to allow the rotation of said spherical element about at least one axis that is perpendicular to the axis of the rod and passes through the center of the spherical element, said seat further comprising at least one sensor suitable to sense variations in the at least one magnetic field emitted by the spherical element, consequently sending electrical signals that are proportional to said variations to an electronic board for signal processing.
  • the reference numeral 1 generally designates a lever of the device, which comprises, in a monolithic assembly, a spherical element 2 made of non-ferromagnetic material and a rod 3, which protrudes radially from the spherical element at one end; at the other end of the rod 3 there is a knob 4, which is meant to be gripped by the operator.
  • the spherical element 2 is contained within a seat formed partly in a base 5 and partly in a cover 6, which is fixed to said base by means of screws 7a and 7b, and comprises two permanent magnets 9a and 9b, which are inserted in suitable seating holes 8a and 8b, which are shaped like cylindrical blocks with axes that are parallel to the axis of the rod 3 and lie on planes that pass through said axis and are perpendicular to each other.
  • the permanent magnets 9a and 9b are arranged so as to face respectively sensors 10a and 10b comprised within the base 5, which are suitable to sense variations in the magnetic fields emitted by said magnets, consequently emitting electrical signals, which are sent to an electronic board comprised within a container 11.
  • the base 5 comprises means that allow the rotation of the spherical element 2 about two axes that are perpendicular to the axis of the rod 3, designated by the reference letter z, and pass through the center of said spherical element: the axis x, which is perpendicular to the plane that contains the permanent magnet 9a with the corresponding sensor 10a, and the axis y, which is perpendicular to the plane that contains the permanent magnet 9b with the corresponding sensor 10b.
  • Said means comprise a pivot 12, which protrudes from the base 5 in a radial direction and so that its axis passes through the center of the spherical element 2; said pivot is inserted in a slot 13, which is formed in the spherical element and is delimited by planes that are parallel and equidistant with respect to the diametrical plane that passes through the axis z and through the axis of the pivot 12.
  • the rotations of the lever 1 about the two axes x and y can also occur simultaneously; in this case, by combining said rotations simultaneously, it is possible to send signals simultaneously from the two sensors to the corresponding actuators.
  • the sensors 10a and 10b can each be replaced with a pair of sensors suitable for example to send signals respectively of the analog and digital type.
  • Figure 1 shows that the spherical element 2 is provided with a pin 14, which is suitable to press a button 15 connected to the electronic board comprised in the container 11 when the lever 1 is in the zero position, i.e., inactive, which is the position shown in the figure, and to release it when the lever is actuated; accordingly, the electronic control management system is allowed to reset the signals to the zero position at each transition through this position.
  • a pin 14 which is suitable to press a button 15 connected to the electronic board comprised in the container 11 when the lever 1 is in the zero position, i.e., inactive, which is the position shown in the figure, and to release it when the lever is actuated; accordingly, the electronic control management system is allowed to reset the signals to the zero position at each transition through this position.
  • the lever 1 has means that are suitable to make it return automatically to said position; said means comprise the spring 16, which acts between the bushes associated with the rod 3, i.e., the bush 17 in contact with the adjustment nut 17a engaged on the thread 3a of said rod and the bush 18 rested on the upper surface of the cover 6.
  • the spherical element of the lever can comprise a single block-shaped permanent magnet that faces at least one sensor, and there are means suitable to allow the rotation of the spherical element about the axis that is perpendicular to the plane that contains said magnet with the corresponding sensor.
  • the permanent magnets may be provided in the form of prism-like blocks, and the axes of said magnets may also have any inclination with respect to the axis of the rod comprised within the lever, for example an inclination equal to a right angle.
  • Figure 4 illustrates a lever 20 according to a further embodiment, which comprises the rod 21 connected to the spherical element 22 provided by means of a single permanent magnet.
  • Figure 5 is another view of a lever 23 according to another embodiment that comprises the rod 24 connected to the spherical element 25 made of nonferromagnetic material and provided with the annular permanent magnet 26 contained in a diametrical slot that lies on the plane that is perpendicular to the axis of the rod 24.

Abstract

A lever-type control device for transmitting electrical signals, comprising a spherical element (2) for emitting at least one magnetic field that is connected to the end of a rod (3) actuated at the other end and contained within a seat that comprises means suitable to allow the rotation thereof about at least one axis that is perpendicular to the axis of the rod and passes through the center of the spherical element, the seat further comprising at least one sensor (10a, 10b) for sensing variations in the at least one magnetic field emitted by the spherical element, sending electrical signals that are proportional to the variations to an electronic board for processing.

Description

  • The present invention relates to a lever-type control device for transmitting electrical signals.
  • The presence is known of control devices that are used commonly in self-propelled machines, such as for example overhead platforms, and comprise a lever that is meant to be actuated rotationally by the operator in order to vary the position of permanent magnets with respect to one or more fixed sensors.
  • The electrical signals emitted by said sensors are consequently influenced thereby in proportion to the movements of the lever, and therefore an appropriate processing of said signals, performed by an electronic board, allows to transmit to the actuators and servo systems that are present on the machine provided with the device, such as for example motors or actuation cylinders, commands that are also proportional to said movements.
  • Currently commercially available devices that operate in the described manner are constructively rather complicated, and it is therefore the aim of the present invention to provide a device that has, by way of particularly simple production methods, a low cost and highly reliable operation.
  • This aim is achieved by a lever-type control device for transmitting electrical signals, according to the invention, characterized in that it comprises, in order to form said lever, a spherical element for emitting at least one magnetic field that is connected to the end of a radial rod meant to be actuated at the other end, said spherical element being contained within a seat that comprises means suitable to allow the rotation of said spherical element about at least one axis that is perpendicular to the axis of the rod and passes through the center of the spherical element, said seat further comprising at least one sensor suitable to sense variations in the at least one magnetic field emitted by the spherical element, consequently sending electrical signals that are proportional to said variations to an electronic board for signal processing.
  • Further characteristics and advantages will become better apparent from the description of some preferred but not exclusive embodiments of the invention, illustrated only by way of non-limitative example in the accompanying drawings, wherein:
  • Figure 1 is a perspective view of the invention, with a portion removed for the sake of clarity of illustration;
  • Figure 2 is a sectional view, taken along the line II-II of Figure 1;
  • Figure 3 is a view of a portion of the control lever;
  • Figures 4 and 5 are views of further embodiments of portions of the control lever.
  • With reference to Figures 1, 2 and 3, the reference numeral 1 generally designates a lever of the device, which comprises, in a monolithic assembly, a spherical element 2 made of non-ferromagnetic material and a rod 3, which protrudes radially from the spherical element at one end; at the other end of the rod 3 there is a knob 4, which is meant to be gripped by the operator.
  • The spherical element 2 is contained within a seat formed partly in a base 5 and partly in a cover 6, which is fixed to said base by means of screws 7a and 7b, and comprises two permanent magnets 9a and 9b, which are inserted in suitable seating holes 8a and 8b, which are shaped like cylindrical blocks with axes that are parallel to the axis of the rod 3 and lie on planes that pass through said axis and are perpendicular to each other.
  • The permanent magnets 9a and 9b are arranged so as to face respectively sensors 10a and 10b comprised within the base 5, which are suitable to sense variations in the magnetic fields emitted by said magnets, consequently emitting electrical signals, which are sent to an electronic board comprised within a container 11.
  • The base 5 comprises means that allow the rotation of the spherical element 2 about two axes that are perpendicular to the axis of the rod 3, designated by the reference letter z, and pass through the center of said spherical element: the axis x, which is perpendicular to the plane that contains the permanent magnet 9a with the corresponding sensor 10a, and the axis y, which is perpendicular to the plane that contains the permanent magnet 9b with the corresponding sensor 10b.
  • Said means comprise a pivot 12, which protrudes from the base 5 in a radial direction and so that its axis passes through the center of the spherical element 2; said pivot is inserted in a slot 13, which is formed in the spherical element and is delimited by planes that are parallel and equidistant with respect to the diametrical plane that passes through the axis z and through the axis of the pivot 12.
  • When the operator, after gripping the knob 4, causes the rotation of the lever 1 about the axis x along the arrows Fx of Figure 1, the position of the magnet 9a changes with respect to the corresponding sensor 10a and accordingly the signal emitted by said sensor undergoes variations that are proportional to the extent of the movements of the lever: a suitable processing of said signal performed by the electronic board inserted in the container 11 determines the sending of commands, likewise proportional to the extent of said movements, to one or more selected actuators that are present on the machine provided with the device.
  • The same applies if the operator turns the lever 1 about the axis y along the arrows Fy, changing the position of the magnet 9b with respect to the corresponding sensor 10b and consequently varying the signal emitted by said sensor.
  • The rotations of the lever 1 about the two axes x and y can also occur simultaneously; in this case, by combining said rotations simultaneously, it is possible to send signals simultaneously from the two sensors to the corresponding actuators.
  • However, it is also possible to provide for the presence of means suitable to allow only one rotation at a time to occur.
  • Before proceeding with the description of the invention, it should be noted that the sensors 10a and 10b can each be replaced with a pair of sensors suitable for example to send signals respectively of the analog and digital type.
  • Figure 1 shows that the spherical element 2 is provided with a pin 14, which is suitable to press a button 15 connected to the electronic board comprised in the container 11 when the lever 1 is in the zero position, i.e., inactive, which is the position shown in the figure, and to release it when the lever is actuated; accordingly, the electronic control management system is allowed to reset the signals to the zero position at each transition through this position.
  • Regarding said zero position, it should be noted that the lever 1 has means that are suitable to make it return automatically to said position; said means comprise the spring 16, which acts between the bushes associated with the rod 3, i.e., the bush 17 in contact with the adjustment nut 17a engaged on the thread 3a of said rod and the bush 18 rested on the upper surface of the cover 6.
  • The description of the embodiment considered so far ends by considering the presence, within the lever 1, of a duct that is formed by the axial cavity 19a connected to the conical cavity 19b at the hole 19c that is present in the base 5 and ends externally, said duct being such as to allow the passage of wires, not shown in the figure, that extend from the button 4a comprised within the knob 4.
  • In a second embodiment of the invention, the spherical element of the lever can comprise a single block-shaped permanent magnet that faces at least one sensor, and there are means suitable to allow the rotation of the spherical element about the axis that is perpendicular to the plane that contains said magnet with the corresponding sensor.
  • In further embodiments of the invention, the permanent magnets may be provided in the form of prism-like blocks, and the axes of said magnets may also have any inclination with respect to the axis of the rod comprised within the lever, for example an inclination equal to a right angle.
  • Figure 4 illustrates a lever 20 according to a further embodiment, which comprises the rod 21 connected to the spherical element 22 provided by means of a single permanent magnet.
  • Figure 5 is another view of a lever 23 according to another embodiment that comprises the rod 24 connected to the spherical element 25 made of nonferromagnetic material and provided with the annular permanent magnet 26 contained in a diametrical slot that lies on the plane that is perpendicular to the axis of the rod 24.
  • The described invention is susceptible of numerous other modifications and variations, all of which are within the scope of the inventive concept; all the details may furthermore be replaced with other technically equivalent elements.
  • The disclosures in Italian Patent Application No. MN2001A000045, from which this application claims priority, are incorporated herein by reference.
  • Where technical features mentioned in any claim are followed by reference signs, those reference signs have been included for the sole purpose of increasing the intelligibility of the claims and accordingly such reference signs do not have any limiting effect on the scope of each element identified by way of example by such reference signs.

Claims (11)

  1. A lever-type control device for transmitting electrical signals, characterized in that it comprises, in order to form said lever, a spherical element for emitting at least one magnetic field that is connected to the end of a radial rod meant to be actuated at the other end, said spherical element being contained within a seat that comprises means suitable to allow the rotation of said spherical element about at least one axis that is perpendicular to the axis of the rod and passes through the center of the spherical element, said seat further comprising at least one sensor suitable to sense variations in the at least one magnetic field emitted by the spherical element, consequently sending electrical signals that are proportional to said variations to an electronic board for signal processing.
  2. The device according to claim 1, characterized in that the spherical element is made of nonferromagnetic material and comprises internally at least one block-shaped permanent magnet that faces at least one corresponding sensor accommodated within the seat of the spherical element, means being provided which allow the rotation of the spherical element about each axis substantially at right angles to the plane that contains each magnet with the corresponding sensor.
  3. The device according to one or more of the preceding claims, characterized in that the spherical element comprises internally two block-shaped permanent magnets that face corresponding sensors accommodated within the seat of the spherical element, means being provided which allow the rotation of the spherical element about the two axes that are substantially perpendicular to the planes that contain each one of the two magnets with the corresponding at least one sensor.
  4. The device according to one or more of the preceding claims, characterized in that the spherical element comprises internally two block-shaped permanent magnets with axes that are contained within planes that pass through the axis of the rod connected to the spherical element and are substantially perpendicular to each other.
  5. The device according to one or more of the preceding claims, characterized in that the spherical element is made of nonferromagnetic material and comprises two cylindrical block-shaped permanent magnets, which are inserted in suitable seating holes and have axes that are parallel to the axis of the rod connected to the spherical element and are contained within planes that pass through said axis and are perpendicular to each other, each magnet facing a corresponding sensor that is accommodated within the seat of the spherical element, means being provided which allow the simultaneous rotation of the spherical element about two axes that are perpendicular to the axis of said rod, pass through the center of the spherical element and are perpendicular to the planes that contain each one of the two magnets with the corresponding sensor, said means comprising a pivot that protrudes from said seat in a radial direction with respect to said spherical element and whose axis passes through the center of said spherical element, said pivot being inserted in a slot that is formed in the spherical element and is delimited by planes that are parallel and equidistant with respect to the diametrical plane that passes through the axis of the rod connected to the spherical element and through the axis of said pivot.
  6. The device according to one or more of the preceding claims, characterized in that the spherical element is made of nonferromagnetic material and comprises, inserted in a suitable seating hole, a permanent magnet shaped like a block, which faces at least one sensor that is accommodated within the seat of the spherical element, means being provided which are suitable to allow the rotation of the spherical element about an axis that is perpendicular to the plane that contains said magnet with the corresponding sensor.
  7. The device according to claim 1, characterized in that the spherical element is provided by means of a single permanent magnet.
  8. The device according to claim 1, characterized in that the spherical element is made of nonferromagnetic material and comprises internally an annular permanent magnet that is contained in a diametrical slot that is contained within the plane that is perpendicular to the axis of the rod connected to the spherical element.
  9. The device according to one or more of the preceding claims, characterized in that the spherical element of the lever comprises a pin for the actuation of a button that is connected to the electronic board and is suitable to act on said button in the zero position of the lever.
  10. The device according to one or more of the preceding claims, characterized in that the rod of the lever comprises an axial cavity that is connected to a conical cavity that is present in the spherical element at a hole provided in the seat of said spherical element and leads outside, so as to allow the passage of wires that extend from a button comprised within a knob for the actuation of the rod.
  11. The device according to one or more of the preceding claims, characterized by the presence of means suitable to determine the automatic return of the lever to the zero position, said means comprising a spring that acts between two bushes that are associated with the rod of the lever, one of said bushes being in contact with an adjustment nut, the other bush resting on a plane that is present in the seat of the spherical element of said lever.
EP02024903A 2001-11-08 2002-11-05 Lever-type control device for transmitting electrical signals Expired - Lifetime EP1310854B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMN20010045 2001-11-08
IT2001MN000045A ITMN20010045A1 (en) 2001-11-08 2001-11-08 LEVER COMMAND DEVICE FOR THE TRANSMISSION OF ELECTRIC SIGNALS

Publications (2)

Publication Number Publication Date
EP1310854A1 true EP1310854A1 (en) 2003-05-14
EP1310854B1 EP1310854B1 (en) 2008-01-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP02024903A Expired - Lifetime EP1310854B1 (en) 2001-11-08 2002-11-05 Lever-type control device for transmitting electrical signals

Country Status (5)

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EP (1) EP1310854B1 (en)
AT (1) ATE383606T1 (en)
DE (1) DE60224488T2 (en)
ES (1) ES2300412T3 (en)
IT (1) ITMN20010045A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005012883A1 (en) * 2005-03-19 2006-09-28 W. Gessmann Gmbh Switchgear for controlling vehicle, machine and multifunctional equipment, has magnets arranged around magnetic field sensors at fulcrum of actuating rod for tilting actuating rod
DE102005042462A1 (en) * 2005-07-15 2007-01-25 Preh Gmbh Operating unit e.g. joystick like operating unit, for use in motor vehicle, has pushbutton associated with knob and operated when knob is pivoted from its initial position in direction of switching or contact position at preset angle
GB2457554A (en) * 2008-02-22 2009-08-26 Sauer Danfoss Inc Joystick
DE102006038087B4 (en) * 2005-08-17 2010-05-06 Sauer-Danfoss Inc. Magnetic control device and method for producing a magnetic control device
DE102006038088B4 (en) * 2005-08-17 2012-10-18 Sauer-Danfoss Inc. Control knob and method of making a control knob
US11385672B1 (en) * 2020-04-10 2022-07-12 Ching-Hsiung Chu Finger pointing joystick with magnetic induction

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4492128A (en) * 1981-05-02 1985-01-08 Bso Steuerungstechnik Gmbh Control mechanism
US4500867A (en) * 1982-01-13 1985-02-19 Nec Kansai, Ltd. Joystick controller using magnetosensitive elements with bias magnets
US4639667A (en) * 1983-05-23 1987-01-27 Andresen Herman J Contactless controllers sensing displacement along two orthogonal directions by the overlap of a magnet and saturable cores

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5969520A (en) * 1997-10-16 1999-10-19 Sauer Inc. Magnetic ball joystick

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4492128A (en) * 1981-05-02 1985-01-08 Bso Steuerungstechnik Gmbh Control mechanism
US4500867A (en) * 1982-01-13 1985-02-19 Nec Kansai, Ltd. Joystick controller using magnetosensitive elements with bias magnets
US4639667A (en) * 1983-05-23 1987-01-27 Andresen Herman J Contactless controllers sensing displacement along two orthogonal directions by the overlap of a magnet and saturable cores

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005012883A1 (en) * 2005-03-19 2006-09-28 W. Gessmann Gmbh Switchgear for controlling vehicle, machine and multifunctional equipment, has magnets arranged around magnetic field sensors at fulcrum of actuating rod for tilting actuating rod
DE102005042462A1 (en) * 2005-07-15 2007-01-25 Preh Gmbh Operating unit e.g. joystick like operating unit, for use in motor vehicle, has pushbutton associated with knob and operated when knob is pivoted from its initial position in direction of switching or contact position at preset angle
DE102006038087B4 (en) * 2005-08-17 2010-05-06 Sauer-Danfoss Inc. Magnetic control device and method for producing a magnetic control device
DE102006038088B4 (en) * 2005-08-17 2012-10-18 Sauer-Danfoss Inc. Control knob and method of making a control knob
GB2457554A (en) * 2008-02-22 2009-08-26 Sauer Danfoss Inc Joystick
GB2457554B (en) * 2008-02-22 2010-02-03 Sauer Danfoss Inc Joystick and method of manufacturing the same
US8122783B2 (en) 2008-02-22 2012-02-28 Sauer-Danfoss Inc. Joystick and method of manufacturing the same
CN101515186B (en) * 2008-02-22 2013-02-20 索尔-丹福斯公司 Joystick and method of manufacturing the same
US11385672B1 (en) * 2020-04-10 2022-07-12 Ching-Hsiung Chu Finger pointing joystick with magnetic induction

Also Published As

Publication number Publication date
ITMN20010045A1 (en) 2003-05-08
DE60224488D1 (en) 2008-02-21
EP1310854B1 (en) 2008-01-09
ATE383606T1 (en) 2008-01-15
ES2300412T3 (en) 2008-06-16
DE60224488T2 (en) 2009-01-15

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