Patents by Inventor Wolfram Grieser
Wolfram Grieser 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).
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Patent number: 10829212Abstract: A telescoping strut for a retractable landing gear in an aircraft. The telescoping strut comprises a pre-pressurized and central extension chamber extending along the telescoping strut and a surrounding retraction chamber. For retraction, an hydraulic generation architecture of the aircraft feeds a single input/output passage of the surrounding retraction chamber with a overcoming fluid pressure that overwhelms a extension positive pressure in the central extension chamber and opposes the effect of the pre-pressurizing. The retraction system is for instance for a rotorcraft.Type: GrantFiled: May 25, 2017Date of Patent: November 10, 2020Assignee: AIRBUS HELICOPTERS DEUTSCHLAND GMBHInventor: Wolfram Grieser
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Publication number: 20170341738Abstract: A telescoping strut for a retractable landing gear in an aircraft. The telescoping strut comprises a pre-pressurized and central extension chamber extending along the telescoping strut and a surrounding retraction chamber. For retraction, an hydraulic generation architecture of the aircraft feeds a single input/output passage of the surrounding retraction chamber with a overcoming fluid pressure that overwhelms a extension positive pressure in the central extension chamber and opposes the effect of the pre-pressurizing. The retraction system is for instance for a rotorcraft.Type: ApplicationFiled: May 25, 2017Publication date: November 30, 2017Applicant: AIRBUS HELICOPTERS DEUTSCHLAND GMBHInventor: Wolfram GRIESER
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Patent number: 9511872Abstract: A mobile power plant having an engine together with a main gear box (5) and a free wheel assembly (4) suitable for driving a rotary wing (7) by means of the main gear box (5) and further having an electric motor-generator (10), wherein the power plant includes an accessory gear box (12), an additional freewheel assembly (11) and a pump (8), said electric motor-generator (10) being mechanically connected in series via said additional freewheel assembly (12) to said main gear box (5) in order to be capable of being driven by said main gear box (5) and said electric motor-generator (10) being connected to said pump (8) in order to be capable of driving said pump (8). The invention relates as well to an application of such a mobile power plant and to a method of operating the mobile power plant.Type: GrantFiled: November 19, 2013Date of Patent: December 6, 2016Assignee: Airbus Helicopters Deutschland GmbHInventor: Wolfram Grieser
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Publication number: 20140140871Abstract: A mobile power plant having an engine together with a main gear box (5) and a free wheel assembly (4) suitable for driving a rotary wing (7) by means of the main gear box (5) and further having an electric motor-generator (10), wherein the power plant includes an accessory gear box (12), an additional freewheel assembly (11) and a pump (8), said electric motor-generator (10) being mechanically connected in series via said additional freewheel assembly (12) to said main gear box (5) in order to be capable of being driven by said main gear box (5) and said electric motor-generator (10) being connected to said pump (8) in order to be capable of driving said pump (8). The invention relates as well to an application of such a mobile power plant and to a method of operating the mobile power plant.Type: ApplicationFiled: November 19, 2013Publication date: May 22, 2014Applicant: EUROCOPTER DEUTSCHLAND GMBHInventor: Wolfram Grieser
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Patent number: 8376283Abstract: A device for controlling vehicles having a manual control unit configured to influence the direction of movement of a vehicle. The manual control unit provides, in a neutral position of the manual control unit, a trim point to determine a preferred direction of movement. The device further includes a force generating device, generating at least one force acting in the direction of the neutral position of the manual control unit; a trim coupling operable to reduce the at least one force acting on the manual control unit; and a trim control unit configured to store and retain the trim point existing prior to an operation of the trim coupling.Type: GrantFiled: November 18, 2009Date of Patent: February 19, 2013Assignee: Eurocopter Deutschland, GmbHInventor: Wolfram Grieser
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Publication number: 20100123045Abstract: A device for controlling vehicles having a manual control unit configured to influence the direction of movement of a vehicle. The manual control unit provides, in a neutral position of the manual control unit, a trim point to determine a preferred direction of movement. The device further includes a force generating device, generating at least one force acting in the direction of the neutral position of the manual control unit; a trim coupling operable to reduce the at least one force acting on the manual control unit; and a trim control unit configured to store and retain the trim point existing prior to an operation of the trim coupling.Type: ApplicationFiled: November 18, 2009Publication date: May 20, 2010Applicant: EUROCOPTER DEUTSCHLAND GMBHInventor: Wolfram Grieser
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Patent number: 7581486Abstract: A hydraulic system includes a reservoir for a hydraulic fluid, a pump, a high-pressure line network, a low-pressure line network and operating cylinders each of which can be connected to the high-pressure line network or to the low-pressure line network via control units, each operating cylinder is associated with a local compensation volume element.Type: GrantFiled: January 18, 2007Date of Patent: September 1, 2009Assignee: Eurocopter Deutschland GmbHInventor: Wolfram Grieser
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Publication number: 20070163251Abstract: A hydraulic system includes a reservoir for a hydraulic fluid, a pump, a high-pressure line network, a low-pressure line network and operating cylinders each of which can be connected to the high-pressure line network or to the low-pressure line network via control units, each operating cylinder is associated with a local compensation volume element.Type: ApplicationFiled: January 18, 2007Publication date: July 19, 2007Applicant: Eurocopter Deutschland GmbHInventor: Wolfram Grieser
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Patent number: 6471160Abstract: A flying drone includes a flight control computer, a parachute system with a parachute, a power supply system, a propulsion system, and an actuating drive system, without any of these systems being redundantly duplicated. To prevent uncontrolled crashing of the drone due to a critical error of any subsystem, signals or data are supplied from the power supply system, the propulsion system, and the actuating drive system, to an error detection or recognition device, which detects defined errors or error combinations in the provided signals or data and then supplies a deployment signal to the parachute system, which responsively generates a control signal that triggers an ejection mechanism to eject the parachute.Type: GrantFiled: May 24, 2001Date of Patent: October 29, 2002Assignee: Eurocopter Deutschland GmbHInventor: Wolfram Grieser
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Publication number: 20010048050Abstract: A flying drone includes a flight control computer, a parachute system with a parachute, a power supply system, a propulsion system, and an actuating drive system, without any of these systems being redundantly duplicated. To prevent uncontrolled crashing of the drone due to a critical error of any subsystem, signals or data are supplied from the power supply system, the propulsion system, and the actuating drive system, to an error detection or recognition device, which detects defined errors or error combinations in the provided signals or data and then supplies a deployment signal to the parachute system, which responsively generates a control signal that triggers an ejection mechanism to eject the parachute.Type: ApplicationFiled: May 24, 2001Publication date: December 6, 2001Inventor: Wolfram Grieser