Patents by Inventor Leif Johannsen
Leif Johannsen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Publication number: 20230270949Abstract: A drug delivery system comprises an indicator element and a sensor system. The indicator element is arranged to rotate relative to a reference component and corresponding to a reference axis and comprises a plurality of dipole magnets. The sensor system comprises a plurality of magnetometers arranged non-rotational relative to the reference component and adapted to determine continuous magnetic field values from the plurality of dipole magnets, as well as processor means configured to determine on the basis of measured values from the plurality of magnetometers a rotational position and/or a rotational movement of the indicator element.Type: ApplicationFiled: May 9, 2023Publication date: August 31, 2023Inventors: Laurits Hoejgaard Olesen, Henrik Bengtsson, Leif Johannsen, Keld Baden-Kristensen, John Aasted Soerensen
-
Patent number: 11684722Abstract: A drug delivery system comprises an indicator element and a sensor system. The indicator element is arranged to rotate relative to a reference component and corresponding to a reference axis and comprises a plurality of dipole magnets. The sensor system comprises a plurality of magnetometers arranged non-rotational relative to the reference component and adapted to determine continuous magnetic field values from the plurality of dipole magnets, as well as processor means configured to determine on the basis of measured values from the plurality of magnetometers a rotational position and/or a rotational movement of the indicator element.Type: GrantFiled: December 3, 2018Date of Patent: June 27, 2023Assignee: Novo Nordisk A/SInventors: Laurits Hoejgaard Olesen, Henrik Bengtsson, Leif Johannsen, Keld Baden-Kristensen, John Aasted Soerensen
-
Publication number: 20200330693Abstract: A drug delivery system comprises an indicator element and a sensor system. The indicator element is arranged to rotate relative to a reference component and corresponding to a reference axis and comprises a plurality of dipole magnets. The sensor system comprises a plurality of magnetometers arranged non-rotational relative to the reference component and adapted to determine continuous magnetic field values from the plurality of dipole magnets, as well as processor means configured to determine on the basis of measured values from the plurality of magnetometers a rotational position and/or a rotational movement of the indicator element.Type: ApplicationFiled: December 3, 2018Publication date: October 22, 2020Inventors: Laurits Hoejgaard Olesen, Henrik Bengtsson, Leif Johannsen, Keld Baden-Kristensen, John Aasted Soerensen
-
Publication number: 20110166524Abstract: The invention provides a pump assembly comprising an actuator lever, a supporting structure, a pump comprising a pump member moveable by actuation of the actuator lever, and an actuator for moving the actuator lever. A first stationary pivoting joint is formed between the actuator lever and the supporting structure, and a second floating pivoting joint is formed between the actuator lever and the pump member allowing the pump member to float relative to the actuator lever, the floating pivoting point providing a constant-length actuator arm defined between the first pivoting joint and the second pivoting joint.Type: ApplicationFiled: March 18, 2011Publication date: July 7, 2011Applicant: Novo Nordisk A/SInventors: Jan Harald Preuthun, Ole Christian Nielsen, Steffen Hansen, Bjørn Gullak Larsen, Henrik Bengtsson, Leif Johannsen, Jinn Jensen
-
Patent number: 7974433Abstract: A suspension member for a diaphragm, the suspension member comprising an inner portion being adapted to be attached to a substantially stiff piston part, a outer portion arranged on or integrated with a substantially stiff support member so as to mechanically stabilize the suspension member, and a flexible member connecting the inner and outer portions. The present invention further relates to an electro-acoustic transducer, preferably a miniature electro-acoustic transducer, applying such suspension member.Type: GrantFiled: September 21, 2006Date of Patent: July 5, 2011Assignee: Gettop Europe R&D ApSInventors: Morten Kjeldsen Andersen, Leif Johannsen
-
Patent number: 7922462Abstract: The invention provides a pump assembly comprising an actuator lever, a supporting structure, a pump comprising a pump member moveable by actuation of the actuator lever, and an actuator for moving the actuator lever. A first stationary pivoting joint is formed between the actuator lever and the supporting structure, and a second floating pivoting joint is formed between the actuator lever and the pump member allowing the pump member to float relative to the actuator lever, the floating pivoting point providing a constant-length actuator arm defined between the first pivoting joint and the second pivoting joint.Type: GrantFiled: September 29, 2006Date of Patent: April 12, 2011Assignee: Novo Nordisk A/SInventors: Jan Harald Preuthun, Ole Christian Nielsen, Steffen Hansen, Bjørn Gullak Larsen, Henrik Bengtsson, Leif Johannsen, Finn Jensen
-
Publication number: 20110064260Abstract: A suspension member for a diaphragm, the suspension member comprising a first portion being adapted to be coupled to a substantially stiff piston part, a second portion integrated with a substantially stiff support member suitable for acoustic sealing purposes, and a flexible member connecting the first and second portions.Type: ApplicationFiled: August 31, 2010Publication date: March 17, 2011Applicant: Pulse HVT ApSInventors: Morten Kjeldsen Andersen, Leif Johannsen
-
Patent number: 7376240Abstract: An electroacoustic transducer comprising a magnetic circuit of a magnetically conductive material with a pair of opposed surfaces defining a gap therebetween, the magnetic circuit comprising a magnet inducing a magnetic field in the gap, the magnet having a surface constituting one of the opposed surfaces. The magnetic circuit further comprises a diaphragm and a coil having electrically conducting paths secured to the diaphragm. The coil has portions of its paths situated in the gap.Type: GrantFiled: September 7, 2004Date of Patent: May 20, 2008Assignee: Sonion Horsens A/SInventors: Kaj Borge Hansen, Leif Johannsen
-
Publication number: 20070237352Abstract: The present invention relates to a miniature electro-acoustic transducer comprising a magnetic circuit comprising a permanent magnet assembly adapted to generate a magnetic flux in an air gap, the magnetic circuit comprising a magnetically permeable yoke having one or more air flow passages arranged therein, the one or more air flow passages being in fluidic communication with the air gap to allow pressurised and/or heated air trapped below a diaphragm of the transducer to be guided to the exterior of the magnetic circuit via said one or more air flow passages. The transducer further comprises a voice coil positioned in the air gap. The voice coil is operatively connected to the diaphragm. The one or more air flow passages are arranged in the yoke so as to guide pressurised and/or heated air in a plane being substantially perpendicular to the direction of movement of the diaphragm.Type: ApplicationFiled: April 4, 2007Publication date: October 11, 2007Inventors: Morten Andersen, Leif Johannsen, Carit Laursen
-
Patent number: 7254248Abstract: An electroacoustic transducer comprising a magnetic circuit of a magnetically conductive material with a pair of opposed surfaces defining a gap there between, the magnetic circuit comprising one magnet. The magnet can either be positioned in the center of the magnetically conductive material so as to form two gaps. In an alternative embodiment the magnet is attached to the magnetic conductive material forming only one gap. The transducer further comprises a diaphragm and a coil system having electrically conducting paths fastened to the diaphragm. The coil system has portions of its paths situated in the gap. The transducer may be supplied with an additional diaphragm and coil system positioned on the opposite side of the magnetic circuit. In a preferred embodiment the transducer is rectangular. The transducer is suited for integration into miniature components such as mobile communication equipment and hearing aids.Type: GrantFiled: July 18, 2003Date of Patent: August 7, 2007Assignee: Sonion Horsens A/SInventors: Leif Johannsen, Morten Kjeldsen Andersen, Finn Jensen
-
Publication number: 20070104596Abstract: The invention provides a pump assembly comprising an actuator lever, a supporting structure, a pump comprising a pump member moveable by actuation of the actuator lever, and an actuator for moving the actuator lever. A first stationary pivoting joint is formed between the actuator lever and the supporting structure, and a second floating pivoting joint is formed between the actuator lever and the pump member allowing the pump member to float relative to the actuator lever, the floating pivoting point providing a constant-length actuator arm defined between the first pivoting joint and the second pivoting joint.Type: ApplicationFiled: September 29, 2006Publication date: May 10, 2007Applicant: Novo Nordisk A/SInventors: Jan Preuthun, Ole Nielsen, Steffen Hansen, Bjorn Larsen, Henrik Bengtsson, Leif Johannsen, Finn Jensen
-
Publication number: 20070081693Abstract: A suspension member for a diaphragm, the suspension member comprising an inner portion being adapted to be attached to a substantially stiff piston part, a outer portion arranged on or integrated with a substantially stiff support member so as to mechanically stabilise the suspension member, and a flexible member connecting the inner and outer portions. The present invention further relates to an electro-acoustic transducer, preferably a miniature electro-acoustic transducer, applying such suspension member.Type: ApplicationFiled: September 21, 2006Publication date: April 12, 2007Inventors: Morten Andersen, Leif Johannsen
-
Publication number: 20070071274Abstract: The present invention relates to a suspension member for a diaphragm and to an electro-acoustic transducer applying such suspension member. The suspension member comprises an inner portion being adapted to be attached to a piston, an outer portion being adapted to be coupled to a substantially stationary portion of an associated electro-acoustic transducer, and a flexible member connecting the inner and outer portions. The flexible member comprises at least one electrically conducting element adapted to transport electrical signals across the suspension member.Type: ApplicationFiled: September 21, 2006Publication date: March 29, 2007Inventors: Morten Andersen, Leif Johannsen
-
Publication number: 20060215873Abstract: An electroacoustic transducer includes a magnetic circuit of a magnetically conductive material with a pair of opposed surfaces defining a gap therebetween. The magnetic circuit includes a magnet inducing a magnetic field in the gap, the magnet having a surface constituting one of the opposed surfaces. The magnetic circuit further includes a diaphragm and a coil having electrically conducting paths secured to the diaphragm. The coil has portions of its paths situated in the gap.Type: ApplicationFiled: April 14, 2006Publication date: September 28, 2006Inventors: Kaj Hansen, Leif Johannsen
-
Publication number: 20060188126Abstract: A miniature multi-loudspeaker module comprising a housing including a magnetic circuit having magnetic means and a magnetically conducting body defining a magnetic field, and first and second coplanar diaphragm and coil assemblies, which are separately movable. The housing is attached to a front cover, which includes first and second sound outlet openings leading to the first and second diaphragms. Preferably, parts of the magnetic circuit can be shared by the two diaphragm and coil assemblies. Preferred embodiments have two diaphragm and coil assemblies that can be separately electrically terminated to enable stereo sound reproduction and can be operated out of phase to serve as a vibration source. Such modules may be utilized for providing stereo sound in, e.g. mobile phones. The front cover may also comprise a sound outlet opening. The receiver signal can be generated by the two diaphragms or by a separately movable third diaphragm and coil assembly.Type: ApplicationFiled: January 30, 2006Publication date: August 24, 2006Inventors: Morten Andersen, Leif Johannsen
-
Patent number: 7062063Abstract: An electroacoustic transducer includes a magnetic circuit of a magnetically conductive material with a pair of opposed surfaces defining a gap therebetween. The magnetic circuit includes a magnet inducing a magnetic field in the gap, the magnet having a surface constituting one of the opposed surfaces. The magnetic circuit further includes a diaphragm and a coil having electrically conducting paths secured to the diaphragm. The coil has portions of its paths situated in the gap.Type: GrantFiled: January 25, 2002Date of Patent: June 13, 2006Assignee: Sonion Horsens A/SInventors: Kaj Borge Hansen, Leif Johannsen
-
Publication number: 20060050906Abstract: The present invention relates to an electro-acoustic transducer suitable for applications within mobile communication equipment and hearing aids. The transducer comprises two diaphragms positioned on opposite sides of a magnetic circuit having two magnetic gaps. When used as a microphone the transducer is substantially insensitive to vibrations, and when used as a speaker the transducer generates only very low vibration levels. The magnetic circuit has a number of advantages compared to conventional transducers with circular magnetic. The transducer can be made lightweight and with very compact dimensions compared to conventional designs. In a preferred embodiment the diaphragms are rectangular. The transducer may additionally be used as a vibration generator for silent alarm signals.Type: ApplicationFiled: August 16, 2005Publication date: March 9, 2006Inventors: Aart Van Halteren, Leif Johannsen
-
Patent number: 6931140Abstract: The present invention relates to an electro-acoustic transducer suitable for applications within mobile communication equipment and hearing aids. The transducer comprises two diaphragms positioned on opposite sides of a magnetic circuit having two magnetic gaps. When used as a microphone the transducer is substantially insensitive to vibrations, and when used as a speaker the transducer generates only very low vibration levels. The magnetic circuit has a number of advantages compared to conventional transducers with circular magnetic. The transducer can be made lightweight and with very compact dimensions compared to conventional designs. In a preferred embodiment the diaphragms are rectangular. The transducer may additionally be used as a vibration generator for silent alarm signals.Type: GrantFiled: September 11, 2002Date of Patent: August 16, 2005Assignee: Sonionkirk A/SInventors: Aart Zeger Van Halteren, Leif Johannsen
-
Publication number: 20050031152Abstract: An electroacoustic transducer comprising a magnetic circuit of a magnetically conductive material with a pair of opposed surfaces defining a gap therebetween, the magnetic circuit comprising a magnet inducing a magnetic field in the gap, the magnet having a surface constituting one of the opposed surfaces. The magnetic circuit further comprises a diaphragm and a coil having electrically conducting paths secured to the diaphragm. The coil has portions of its paths situated in the gap.Type: ApplicationFiled: September 7, 2004Publication date: February 10, 2005Inventors: Kaj Hansen, Leif Johannsen
-
Publication number: 20040184623Abstract: The present invention relates to an electro dynamic speaker unit comprising an electro dynamic motor adapted for receiving a first electrical signal and to drive a diaphragm in accordance with the received first electrical signal. The speaker unit further comprises sensing means adapted for generating a second electrical signal in accordance with a movement of the diaphragm, and determining means adapted for receiving the first and the second electrical signals so as to determine an acoustical load of the speaker unit from the first and the second electrical signals. The determining means further generates a third electrical signal in accordance with the determined acoustical load of the speaker unit. The present invention further relates to a method for active leak compensation of an electro dynamic speaker unit.Type: ApplicationFiled: March 5, 2004Publication date: September 23, 2004Inventors: Leif Johannsen, Morten Kjeldsen Andersen