Patents by Inventor Gregor Poertzgen
Gregor Poertzgen 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: 6209583Abstract: The invention relates to a pressure accumulator which may be used in an electronically controllable vehicle braking system for a motor vehicle. In an electronically controllable vehicle braking system with a cylinder/piston arrangement (i.e., a master cylinder) providing a brake fluid , a brake pedal actuates the cylinder/piston arrangement to provide brake fluid acting on the brake of the motor vehicle. The cylinder/piston arrangement is connectable with a pump arrangement and the pressure accumulator.Type: GrantFiled: April 14, 2000Date of Patent: April 3, 2001Assignee: Lucas Industries public limited companyInventors: Kurt Mohr, Karl-Friedrich Wörsdörfer, Gregor Poertzgen
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Patent number: 6135572Abstract: An actuation unit for an electronically controlled hydraulic vehicle braking system, comprising a brake booster which can be actuated by a brake pedal and which comprises a master cylinder and a reservoir for hydraulic fluid, a first brake which is coupled with at least a first vehicle wheel and which is connectable with the master cylinder via an electronically controlled valve arrangement in a basic position or, in an actuation position is disconnectable from same, a brake pedal behaviour simulator which is connectable with the master cylinder and comprises a spring arrangement adapted to act against the hydraulic pressure from the master cylinder, and with which a characteristics modeling is associated.Type: GrantFiled: March 18, 1999Date of Patent: October 24, 2000Assignees: Varity GmbH, Lucas Industries plcInventors: Karl-Friedrich Worsdorfer, Gregor Poertzgen, Andrew Kingston, Thomas Weigert
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Patent number: 6076558Abstract: The invention relates to an electronically controllable vehicle braking system for a motor vehicle with a cylinder/piston arrangement providing a brake fluid, which, by actuating a brake pedal, is caused to provide brake fluid acting on the brake of the motor vehicle, with the cylinder/piston arrangement being connectable with a pump arrangement and a pressure accumulator. The pressure accumulator has a housing which comprises a fluid connection for a fluid flowing into and out of the housing as well as a spring arrangement against whose force brake fluid flowing through the fluid connection is acting, with at least one part of the spring arrangement being formed by at least one part of the housing wall.Type: GrantFiled: August 21, 1998Date of Patent: June 20, 2000Assignee: Lucas Industries public limited companyInventors: Kurt Mohr, Karl-Friedrich Worsdorfer, Gregor Poertzgen
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Patent number: 6012491Abstract: The invention relates to a pressure accumulator which comprises a housing for accommodating fluid, a fluid connection for a fluid flowing into and out of the housing, as well as a spring arrangement against whose force a fluid flowing through the fluid connection is acting, characterised in that at least one part of the spring arrangement is formed by at least one part of the wall of the housing.Type: GrantFiled: August 26, 1998Date of Patent: January 11, 2000Assignee: Lucas Industries public limted companyInventors: Kurt Mohr, Karl-Friedrich Worsdorfer, Gregor Poertzgen
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Patent number: 5979999Abstract: An electrohydraulic braking system for motor vehicles with a brake master cylinder which can be actuated by a brake pedal. A wheel brake is coupled with at least with one vehicle wheel. The wheel brake can be connected with the brake master cylinder in order to subject the wheel brake to pressurized hydraulic fluid. A hydraulic pump, and a hydraulic pressure accumulator supplied by the pump, form an alternative source of pressurized hydraulic fluid which can be supplied to the wheel brake through a control valve arrangement in a controlled manner in order to subject the wheel brake to pressurized hydraulic fluid. A shut-off valve is arranged between the hydraulic pump and the hydraulic pressure accumulator in order to selectively make or shut-off a connection between the hydraulic pump and the hydraulic pressure accumulator to permit the hydraulic pump, in certain situations, to rapidly pressurize the braking system without having to simultaneously recharge the hydraulic pressure accumulator.Type: GrantFiled: October 23, 1998Date of Patent: November 9, 1999Assignee: Lucas Industries public limited companyInventors: Gregor Poertzgen, Karl-Friedrich Worsdorfer, Kurt Mohr
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Patent number: 5865510Abstract: A brake pedal (1) for actuation of a brake cylinder (10) of a motor vehicle, comprises a lever (2), having at an end portion of one lever (3) a stepping plate (4) for actuation by a driver, and an articulation location (5) for introducing actuation forces into the brake cylinder (10), characterized in that the lever (2) comprises a first rotational axis (6) and a second rotational axis (7), the lever (2) rotating about the first rotational axis (6) during a normal actuation, and the lever (2) rotating about the second rotational axis (7) during an emergency actuation.Type: GrantFiled: October 8, 1996Date of Patent: February 2, 1999Assignee: Lucas Industries public limited companyInventors: Gregor Poertzgen, Peter Martin
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Patent number: 5778673Abstract: A brake cylinder means (1) for a motor vehicle, comprises a cylinder/piston means (2) adapted to be operated by a brake pedal means for generating pressure in a hydraulic brake system of the motor vehicle, characterized in that the cylinder/piston means (2) is provided in an outer cylinder means (3) in an axially movable manner, a spring means is provided to resiliantly bias said cylinder/piston means (2) against said outer cylinder (3), in an normal actuation position said cylinder (2a) of said cylinder/piston means (2) being essentially non-movable with respect to the piston (2b) of said cylinder/piston means (2), such that the cylinder/piston means (2) being movable against the spring forces of said spring means (4) in said outer cylinder (3).Type: GrantFiled: October 9, 1996Date of Patent: July 14, 1998Assignee: Lucas Industries public limited companyInventors: Gregor Poertzgen, Bob Uzzell
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Patent number: 5154264Abstract: According to an illustrative example of the invention, a gas spring comprises a cylinder which is closed at both ends thereof. A piston is provided within the cylinder and separates two working chambers within the cylinder. The working chambers are filled with a pressurized gas. The piston is connected with a piston rod which extends axially through one end of the cylinder. The working chambers can be selectively connected or separated from each other through an axial channel extending through the piston. This axial channel accommodates a valve pin. The valve pin is axially movable by an actuating rod accommodated by an axial bore of the piston rod. The piston is in sealing engagement with an inner circumferential face of the cylinder. The valve pin is in sealing engagement with the channel. The piston is provided with an elastic covering layer, which covering layer provides both the sealing engagement of the piston with the cylinder and the sealing engagement of the valve pin with the piston.Type: GrantFiled: February 6, 1990Date of Patent: October 13, 1992Assignee: Stabilus GmbHInventors: Gregor Poertzgen, Castor Fuhrmann
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Patent number: 5126925Abstract: According to an illustrative example of the invention, a motor vehicle comprises a basic frame. A compartment is defined within this basic frame. This compartment is intended for receiving an engine or for receiving luggage. The compartment is provided with a lid which is pivotable about a horizontal axis. For facilitating opening and closing of the lid, a gas spring is in operative connection between the basic frame and the lid. A light source is provided for illuminating the compartment when opened. This light source is mounted on the gas spring.Type: GrantFiled: August 6, 1990Date of Patent: June 30, 1992Assignee: Stabilus GmbHInventors: Rolf Mintgen, Castor Fuhrmann, Gregor Poertzgen, Michael Schuth
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Patent number: 5097928Abstract: According to an illustrative example of the present invention a hydropneumatic positioning device comprises a tubular container. A hollow piston rod is guided through one end of the tubular container. A piston is connected with the piston rod within a cavity of the tubular container. The piston divides the cavity into two working chambers. The working chambers contain a liquid. Adjacent one of the working chambers, namely the working chamber remote from the piston rod, a compensating chamber is provided. This compensating chamber contains a pressurized gas and is separated from the adjacent working chamber by a floating separating wall. A flow passage extends through the piston between the two working chambers. A valve is allocated to the flow passage. The valve can be opened by an actuating rod extending through an axial bore of the hollow piston rod. The actuating rod extends beyond an outer end of the piston rod. An actuating signal transformer is fastened to the outer end of the piston rod.Type: GrantFiled: October 10, 1990Date of Patent: March 24, 1992Assignee: Stabilus GmbHInventors: Stephan Enders, Gregor Poertzgen
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Patent number: 5012996Abstract: According to an illustrative example of the invention a gas spring has adjacent one end thereof an axially extending control pin. This control pin is prestressed towards an outer position and can be pushed inwards for opening a valve, which valve is provided in the passage between two working chambers established by a piston, said piston being fixed to a piston rod. When the pin is in its outward position, the gas spring is locked in the respective axial length. When the control pin is moved inwards, the axial length of the gas spring can be varied. The gas spring is intended for combination with a chair or table column. In combining the gas spring with a chair, the upper end of the gas spring cylinder is fixed to the lower side of the seat plate. The lower side of the seat plate is provided with a manipulating level. The manipulating lever engages the outer end of the control pin through a telescopic arrangement of control members or adapter elements.Type: GrantFiled: October 24, 1989Date of Patent: May 7, 1991Assignee: Stabilus GmbHInventors: Gregor Poertzgen, Castor Fuhrmann, Hans-Josef Hosan
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Patent number: 4848524Abstract: In a telescopic apparatus, an inner telescopic part is axially displaceable in wobble-free manner in an outer telescopic part. For the guidance of the inner telescopic part a carrier sleeve is inserted into the outer telescopic part. The carrier sleeve accommodates at least one guide ring body in universal joint manner. This guide ring body possesses a guide surface section which rests on the outer telescopic part.Type: GrantFiled: August 4, 1987Date of Patent: July 18, 1989Assignee: Stabilus GmbHInventors: Hans-Josef Hosan, Gregor Poertzgen