Patents by Inventor Mohamed Yahia

Mohamed Yahia 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: 20120201970
    Abstract: A method for providing a multilayer composite includes the steps of providing a first composite comprising a film of a dielectric material with a front surface and an opposite rear surface, the front surface comprising a surface pattern; depositing an electrically conductive layer onto the surface pattern; providing a second composite comprising a film with a front surface and an opposite rear surface, the front surface comprising a surface pattern; depositing an electrically conductive layer covering at least a portion of the surface pattern; arranging the first composite on the second composite; and fixating the position of the first composite relative to the second composite.
    Type: Application
    Filed: April 16, 2012
    Publication date: August 9, 2012
    Applicant: Danfoss A/S
    Inventors: Mohamed Yahia Benslimane, Peter Gravesen
  • Patent number: 8181338
    Abstract: A method for providing a multilayer composite includes the steps of providing a first composite comprising a film of a dielectric material with a front surface and an opposite rear surface, the front surface comprising a surface pattern; depositing an electrically conductive layer onto the surface pattern; providing a second composite comprising a film with a front surface and an opposite rear surface, the front surface comprising a surface pattern; depositing an electrically conductive layer covering at least a portion of the surface pattern; arranging the first composite on the second composite; and fixating the position of the first composite relative to the second composite.
    Type: Grant
    Filed: November 3, 2006
    Date of Patent: May 22, 2012
    Assignee: Danfoss A/S
    Inventors: Mohamed Yahia Benslimane, Peter Gravesen
  • Patent number: 8082752
    Abstract: The invention proposes a pressure-reducing module for an air conditioning circuit (10) through which a supercritical refrigerant flows. The module is connected to the circuit via one inlet and two outlets. The module comprises a pressure-reducing device (120), and a distribution valve (16) connected to the pressure-reducing device and to the two outlets. A dual evaporator circuit using such a pressure-reducing module is also proposed. The two evaporators (131, 132) are mounted in parallel. The module receives the fluid coming from a gas cooler via its inlet and delivers the fluid to at least one of the two evaporators (131, 132) via its outlets.
    Type: Grant
    Filed: January 3, 2007
    Date of Patent: December 27, 2011
    Assignee: Valeo Systemes Thermiques S.A.S.
    Inventors: Jin-Ming Liu, Mohamed Yahia
  • Publication number: 20110162200
    Abstract: A tubular elastomer actuator with a shape in a cross-sectional view which shape exposes at most one single axis of symmetry of a specific length, e.g., an oval shape. The actuator could be made from a sheet made from a plurality of plate shaped elements which are laminated together and rolled. Each plate shaped element may have a corrugation that gives the element an anisotropic structure, and contains an electrode on only one surface. The actuator displacement is the result of shrinkage displacement of the plate shaped elements upon the application of electrical field across their thickness.
    Type: Application
    Filed: February 14, 2011
    Publication date: July 7, 2011
    Applicant: Danfoss A/S
    Inventors: Mohamed Yahia Benslimane, Peter Gravesen
  • Publication number: 20110146942
    Abstract: The invention relates to a distribution unit (22) that is able to manage the circulation of a cooling fluid FR in an A/C loop (4). The distribution unit (22) comprises nine inlets E1, E2, E3, E4, E5, E6, E7, E8, E9 of the cooling fluid FR inside the distribution unit (22) and four outlets S1, S2, S3, S4 of the cooling fluid FR outside the distribution unit (22). Each outlet S1, S2, S3, S4 is linked with at least two inlets E1, E2, E3, E4, E5, E6, E7, E8, E9.
    Type: Application
    Filed: December 15, 2010
    Publication date: June 23, 2011
    Inventors: Klaus WITTMANN, Mohamed YAHIA, Bertrand NICOLAS
  • Publication number: 20110146305
    Abstract: The invention relates to a control process for an air conditioning system. The air conditioning system comprises a thermal loop (1) used as a heat pump and an electrical heating device (2). The process calculates a global heating capacity (HCglo) in function of the temperature chosen by the passenger, the speed of the blower and the temperature of the exterior air. Then, the process calculates a heating capacity (HC1) of the thermal loop (1) and compares this heating capacity (HC1) of the thermal loop to the global heating capacity (HCglo). If the global heating capacity (HCglo) is superior to the heating capacity (HC1) of the thermal loop, the process determines a heating capacity (HC2) of the electrical heating device (2). This heating capacity (HC2) of the electrical heating device (2) added to the heating capacity (HC1) of the thermal loop (1) allows to obtain the global heating capacity (HCglo) required in function of the temperature selected by the passenger.
    Type: Application
    Filed: December 15, 2010
    Publication date: June 23, 2011
    Inventors: Mohamed YAHIA, Bertrand NICOLAS, Samy HAMMI
  • Publication number: 20110146318
    Abstract: The invention relates to an air conditioning device (1) comprising elements (15,16,13,14,19,22,P1,P2;17) of an A/C loop (4) inside which circulates a cooling fluid FR, of a primary circuit (5) inside which circulates a coolant fluid FC and of a secondary circuit (6) inside which circulates a coolant liquid LC. The air conditioning device (1) comprises a support (100) on which the elements (15,16,13,14,19,22,P1,P2;17) are fixed.
    Type: Application
    Filed: December 15, 2010
    Publication date: June 23, 2011
    Inventors: Klaus WITTMANN, Mohamed YAHIA, Bertrand NICOLAS
  • Publication number: 20110123724
    Abstract: A composite for a transducer facilitates an increased actuation force as compared to similar prior art composites for transducers. The composite facilitates increased compliance of the transducer in one direction, an improved reaction time as compared to similar prior art composites for transducers, and provides an increased lifetime of the transducer in which it is applied.
    Type: Application
    Filed: January 28, 2011
    Publication date: May 26, 2011
    Applicant: Danfoss A/S
    Inventors: Mohamed Yahia Benslimane, Peter Gravesen
  • Publication number: 20110067427
    Abstract: The invention is related to an AC loop (12) for ventilation, heating and/or air conditioning installation comprising, according to the circulation of an refrigerant in the AC loop, at least a compressor (14), a first heat exchanger (16) for heating an air flow distributed into the passenger compartment, a first expansion device (18), an exterior heat exchanger (20) and a second heat exchanger (24). The AC loop (12) comprises a storage device (28) connected to the outlet of the first heat exchanger (16) and to the outlet of the exterior heat exchanger (20).
    Type: Application
    Filed: September 22, 2010
    Publication date: March 24, 2011
    Inventors: Régine HALLER, Mohamed YAHIA, Imed GUITARI
  • Patent number: 7895728
    Abstract: A tubular elastomer actuator with a shape in a cross-sectional view which shape exposes at most one single axis of symmetry of a specific length, e.g., an oval shape. The actuator could be made from a sheet made from a plurality of plate shaped elements which are laminated together and rolled. Each plate shaped element may have a corrugation that gives the element an anisotropic structure, and contains an electrode on only one surface. The actuator displacement is the result of shrinkage displacement of the plate shaped elements upon the application of electrical field across their thickness.
    Type: Grant
    Filed: August 6, 2007
    Date of Patent: March 1, 2011
    Assignee: Danfoss A/S
    Inventors: Mohamed Yahia Benslimane, Peter Gravesen
  • Patent number: 7880371
    Abstract: A composite for a transducer facilitates an increased actuation force as compared to similar prior art composites for transducers. The composite facilitates increased compliance of the transducer in one direction, an improved reaction time as compared to similar prior art composites for transducers, and provides an increased lifetime of the transducer in which it is applied.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: February 1, 2011
    Assignee: Danfoss A/S
    Inventors: Mohamed Yahia Benslimane, Peter Gravesen
  • Patent number: 7868221
    Abstract: This invention relates to an elastic bandage for supporting a body extremity such as a leg. Such bandages are used to overcome problems with fluid retention and swelling in the legs, occurring as a consequence of varicose veins, vascular incompetence, pregnancy, etc. It is a task of this invention to supply an active support for a body extremity such as a leg, which can be used by a person underneath the clothes and will not reduce the mobility of the patient. This task is solved in that an elastic bandage comprises an elastic layer for surrounding a body extremity to exert compressive force on the extremity, the bandage being, at least partly, formed by elastomeric actuation elements, whereby electrical control of the compressive force is possible, and where the control is due to a signal from some sensing system.
    Type: Grant
    Filed: February 24, 2004
    Date of Patent: January 11, 2011
    Assignee: Danfoss A/S
    Inventors: Jakob Munch-Fals, Mohamed Yahia Benslimane, Peter Gravesen, Theiss Stenstroem
  • Patent number: 7843111
    Abstract: A composite for a transducer facilitates an increased actuation force as compared to similar prior art composites for transducers. In accordance with the present invention, the composite also facilitates increased compliance of the transducer in one direction and an improved reaction time as compared to similar prior art composites for transducers, as well as provides an increased lifetime of the transducer in which it is applied.
    Type: Grant
    Filed: March 9, 2009
    Date of Patent: November 30, 2010
    Assignee: Danfoss A/S
    Inventors: Mohamed Yahia Benslimane, Peter Gravesen
  • Publication number: 20100287979
    Abstract: The invention relates to a heating, ventilating and/or air conditioning device (1) comprising an A/C loop (6) inside which a refrigerating fluid FR circulates and a secondary loop (10) inside which a cooling fluid FC circulates. The said device (1) comprising a first heat exchanger (8) between the refrigerating fluid FR and the cooling fluid FC, a second heat exchanger (9) between the refrigerating fluid FR and the cooling fluid FC. The secondary loop comprises a third heat exchanger (14) between the cooling fluid FC and the air, and a fourth heat exchanger (15) between the cooling fluid FC and the air. The secondary loop (10) comprises derivation means (22) of the cooling fluid FC from an outlet point (21) of the cooling fluid FC outside the third heat exchanger (14) and an inlet point (23) of the cooling fluid FC inside the fourth heat exchanger (15).
    Type: Application
    Filed: May 12, 2010
    Publication date: November 18, 2010
    Inventors: Regine HALLER, Bertrand NICOLAS, Mohamed YAHIA
  • Patent number: 7808163
    Abstract: A multilayer composite includes at least two composites, each composite having a film and an electronically conductive layer. Several composites are laminated to provide an increased conversion between mechanical and electrical energies not only due to the multiplication of the effect of each layer, but also due to the fact that the multilayer structure itself renders the multilayer composite more rigid. In addition, the multilayer structure facilitates application of an electrical field over thinner portions of the structure, thereby requiring much less potential difference between electrodes.
    Type: Grant
    Filed: June 2, 2009
    Date of Patent: October 5, 2010
    Assignee: Danfoss A/S
    Inventors: Mohamed Yahia Benslimane, Peter Gravesen
  • Patent number: 7785905
    Abstract: The present invention relates to dielectric actuators or sensors of the kind wherein electrostatic attraction between two electrodes located on an elastomeric body leads to a compression of the body in a first direction and a corresponding extension of the body in a second direction. The dielectric actuator/sensor structure comprises a first sheet of elastomeric material having at least one smooth surface and a second surface and a second sheet of elastomeric material having at least one smooth surface and a second surface. The sheets are laminated together with their second surfaces exposed, and there is provided a first electrode on the second surface of the first sheet and second electrode on the second surface of the second sheet.
    Type: Grant
    Filed: October 9, 2007
    Date of Patent: August 31, 2010
    Assignee: Danfoss A/S
    Inventors: Mohamed Yahia Benslimane, Peter Gravesen
  • Patent number: 7732999
    Abstract: A capacitive transducer having a significantly increased actuation force and improved response time as compared to similar prior art capacitive transducers. In the capacitive transducer of the present invention it is not necessary to balance response time and actuation force or to provide pre-strain to the transducer in a direction of actuation. Additionally, buckling in the capacitive transducer is prevented, or at least substantially reduced, in a simple manner.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: June 8, 2010
    Assignee: Danfoss A/S
    Inventors: Jorgen M. Clausen, Mohamed Yahia Benslimane
  • Publication number: 20090314462
    Abstract: The invention relates to a system (1) for the heating, ventilation, and/or air conditioning of a motor vehicle passenger compartment. Said system (1) comprises at least one heat exchanger (6, 7) through which there flows a heat-transfer fluid FC. Said system (1) is equipped with at least one means (13) for pumping the heat-transfer fluid FC at a flow rate of between 40 l/h and 200 l/h, in such a way that a temperature difference of the heat-transfer fluid FC between an outlet (9, 10) and an inlet (11, 12) of the heat exchanger (6, 7) is greater than 45° C.
    Type: Application
    Filed: June 17, 2009
    Publication date: December 24, 2009
    Inventors: Mohamed YAHIA, Daniel NEVEU
  • Patent number: 7635845
    Abstract: An IR sensor (1), especially a CO2 sensor, is described, having a filter arrangement (6), downstream of which there is arranged a detector arrangement (7), and an evaluating device (8) which is connected to the detector arrangement (7), the filter arrangement (6) having a first filter (9) and a second filter (10), which are configured as bandpass filters and each have a passband and of which the first filter (9) allows passage of a predetermined IR band and the second filter (10) does not, and the detector arrangement having two detectors (14, 15), each of which is associated with a filter (9, 10). The objective is to simplify the use of such an IR sensor. For that purpose, the passband of one filter (10) is arranged within the passband of the other filter (9) and the evaluating device (8) forms the difference of the signals (S1, S2) of the detectors (14, 15) and normalises it to the signal (S1) of a detector (14).
    Type: Grant
    Filed: June 10, 2005
    Date of Patent: December 22, 2009
    Assignee: Danfoss A/S
    Inventors: Jens Moeller Jensen, Mohamed Yahia Benslimane
  • Publication number: 20090239039
    Abstract: A multilayer composite includes at least two composites, each composite having a film and an electronically conductive layer. Several composites are laminated to provide an increased conversion between mechanical and electrical energies not only due to the multiplication of the effect of each layer, but also due to the fact that the multilayer structure itself renders the multilayer composite more rigid. In addition, the multilayer structure facilitates application of an electrical field over thinner portions of the structure, thereby requiring much less potential difference between electrodes.
    Type: Application
    Filed: June 2, 2009
    Publication date: September 24, 2009
    Applicant: Danfoss A/S
    Inventors: Mohamed Yahia Benslimane, Peter Gravesen