Patents by Inventor Eric Schaeffer

Eric Schaeffer 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).

  • Patent number: 9037326
    Abstract: A method for disconnecting an electrical machine connected with the wheels of a vehicle's drive axle by means of a dog clutch having intermeshing couplers includes, upon receipt of a command to disengage, two successively activated steps. In the first step, a torque equal to a calibrated threshold of a target torque (d) is applied to the electrical machine so to effect a zero torque between the couplers. During this step, a dog clutch actuator is deactivated so to allow the dog clutch to disengage from the electrical machine as quickly as possible. Next, a torque having a value determined according to a slope whose value ranges from the calibrated threshold of the target torque (d) to zero is applied to the electrical machine.
    Type: Grant
    Filed: July 12, 2010
    Date of Patent: May 19, 2015
    Assignee: Peugeot Citroen Automobiles SA
    Inventors: Eric Schaeffer, Florian Galinaud
  • Publication number: 20120259494
    Abstract: To couple an electric machine (42) with running-gear wheels (44) of a vehicle when the vehicle is running, the method comprises two steps activated in succession on the basis of a coupling request; a step of driving the electric machine (42) up to speed, in which a rotation rate command is applied to the electric machine (42) so as to reduce a déviation between the speed of an upstream dog clutch (51) rotating integrally with the electric machine and the speed of a downstream dog clutch (52) rotating integrally with the wheels (44); and an engagement step activated following a déviation (110) in speed that is below a predetermined threshold, in which the electric machine (42) is slaved to a torque command and the dog clutches (51, 52) are brought together until a state of positive interlock of the two dog clutches is obtained.
    Type: Application
    Filed: December 6, 2010
    Publication date: October 11, 2012
    Applicant: PEUGEOT CITROEN AUTOMOBILES SA
    Inventors: Eric Schaeffer, Florian Galinaud
  • Publication number: 20120253577
    Abstract: A method for disconnecting an electrical machine connected with the wheels of a vehicle's drive axle by means of a dog clutch having intermeshing couplers includes, upon receipt of a command to disengage, two successively activated steps. In the first step, a torque equal to a calibrated threshold of a target torque (d) is applied to the electrical machine so to effect a zero torque between the couplers. During this step, a dog clutch actuator is deactivated so to allow the dog clutch to disengage from the electrical machine as quickly as possible. Next, a torque having a value determined according to a slope whose value ranges from the calibrated threshold of the target torque (d) to zero is applied to the electrical machine.
    Type: Application
    Filed: July 12, 2010
    Publication date: October 4, 2012
    Applicant: PEUGEOT CITROEN AUTOMOBILES SA
    Inventors: Eric Schaeffer, Florian Galinaud
  • Publication number: 20070208468
    Abstract: A vehicle information display (56) for a hybrid electric vehicle is provided. The display (56) includes an engine icon (60), a motor icon (62), a battery icon (64) and a vehicle drive wheels icon (66). To provide information to the vehicle operator regarding the operating state of the vehicle, power flow indicators (68, 70, 72) between the various icons are used to indicate the direction and magnitude of power flow between corresponding components of the vehicle.
    Type: Application
    Filed: June 30, 2004
    Publication date: September 6, 2007
    Applicant: FORD MOTOR COMPANY
    Inventors: Venkateswa Sankaran, Steven Chorian, Eric Schaeffer, Lixin Situ
  • Publication number: 20050271212
    Abstract: The present invention relates to an enhanced-performance sound source spatialization system used in particular to produce a spatialization system compatible with an integrated modular avionics type system. It comprises a filter database comprising a set of head-related transfer functions specific to the listener, a data presentation processor receiving information from each source and comprising in particular a module for computing the relative positions of the sources in relation to the listener and a module for selecting the head-related transfer functions with a variable resolution suited to the relative position of the source in relation to the listener, a unit for computing said monophonic channels by convoluting each sound source with head-related transfer functions of said database estimated at said source position.
    Type: Application
    Filed: June 27, 2003
    Publication date: December 8, 2005
    Applicant: THALES
    Inventors: Eric Schaeffer, Gerard Reynaud
  • Patent number: 6715780
    Abstract: A manual wheelchair system comprising of a pair of lever arms positioned on each side of the chair that actuate a propulsion system located entirely under the seat of the wheelchair. Both the push and pull stroke of the levers, unlimited by stroke angle, provides unidirectional forward propulsion to the rear wheels of the chair. This is accomplished through drive gears fitted with one-way clutches and idler gears intermeshing with them. A sprocket is attached to one drive gear, and connects to an internal shifting hub using a chain or belt. This hub could optionally be a manual or automatic unit, with the automatic shifting unit relying on sensory feedback from the rear drive wheel to determine the most efficient ratio of operation. The hub connects to the rear drive axle through another sprocket and chain combination and drives the rear wheel as the levers are manipulated. The rear axle has a disconnecting clutch so that the entire drive propulsion system can disengaged from the chair.
    Type: Grant
    Filed: October 15, 2001
    Date of Patent: April 6, 2004
    Inventors: Jon Eric Schaeffer, Jerome Edwin Schaeffer
  • Publication number: 20030071435
    Abstract: A manual wheelchair system comprising of a pair of lever arms positioned on each side of the chair that actuate a propulsion system located entirely under the seat of the wheelchair. Both the push and pull stroke of the levers, unlimited by stroke angle, provides unidirectional forward propulsion to the rear wheels of the chair. This is accomplished through drive gears fitted with one-way clutches and idler gears intermeshing with them. A sprocket is attached to one drive gear, and connects to an internal shifting hub using a chain or belt. This hub could optionally be a manual or automatic unit, with the automatic shifting unit relying on sensory feedback from the rear drive wheel to determine the most efficient ratio of operation. The hub connects to the rear drive axle through another sprocket and chain combination and drives the rear wheel as the levers are manipulated. The rear axle has a disconnecting clutch so that the entire drive propulsion system can disengaged from the chair.
    Type: Application
    Filed: October 15, 2001
    Publication date: April 17, 2003
    Inventors: Jon Eric Schaeffer, Jerome Edwin Schaeffer
  • Publication number: 20020086342
    Abstract: The present invention relates to novel assays for the identification of agents that inhibit the catalytic activity of PTPbr7. The invention also provides pharmaceutical compositions comprising such agents identified using the assays of the invention. The invention further provides methods of treatment comprising administering such pharmaceutical compositions.
    Type: Application
    Filed: October 31, 2001
    Publication date: July 4, 2002
    Inventor: Eric Schaeffer