Keuper
Gerhard Keuper, Leonberg DE
Patent application number | Description | Published |
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20080202110 | Hydraulic Control Arrangement - The invention discloses a hydraulic control arrangement for controlling a number of consumers, particularly of a mobile working machine. In addition to the consumers of the control arrangement, an additional consumer should be able to be connected to a power beyond port. All consumers and power beyond consumers are supplied with hydraulic fluid by a pump. An input pressure scale is provided downstream of the pump, and the greater of the load pressures of the consumers or of the at least one power beyond consumer is applied to the control port of said input pressure scale. | 08-28-2008 |
20090007556 | Hydraulic Control System - The invention relates to a hydraulic control arrangement for actuating at least two consumers ( | 01-08-2009 |
20090044527 | HYDRAULIC CONTROL SYSTEM - A hydraulic control system for controlling preferably at least two consumers, has a pump with an adjustable delivery quantity supplying pressure fluid, an adjustable metering orifice with which the consumers are each associatable, a power beyond connection to which at least one power beyond consumer is connectable, an inlet pressure governor unit situated downstream of the pump and acted on in a closing direction by a load pressure of the consumers or of the at least one power beyond consumer, the inlet pressure governor unit being provided in a pressure fluid flow path between the pump and at least one of the two consumers, while the power beyond connection branching off from a pressure fluid flow path between the pump and the inlet pressure governor unit, a tank, the inlet pressure governor unit in a spring-prestressed position closing a connection to the at least one of the two consumers and the tank, and in another position a pressure fluid connection to the tank is opened, the inlet pressure governor unit being movable into an additional position in which a throttled connection to the tank is opened. | 02-19-2009 |
20090053078 | HYDRAULIC CONTROL SYSTEM - A hydraulic control system for controlling preferably at least two consumers, has a pump supplying the consumers with a pressure medium and having an adjustable pump capacity, an adjustable metering orifice assigned to each of the consumers, a power-beyond connection to which at least one power-beyond consumer is attachable, an inlet pressure scale connected downstream of the pump and provided in a pressure medium flow path between the pump and at least one of the two consumers, wherein the power-beyond connection branches off in the pressure medium flow path between the pump and the inlet pressure scale, a spring with a force acting upon the inlet pressure scale in a closing direction, an inlet having a pressure acting upon the inlet pressure scale in an opening direction, wherein the inlet pressure scale is configured so that it is actable upon in the closing direction selectively by either a highest load pressure or by a pressure that is greater than the highest load pressure. | 02-26-2009 |
Matthijs H. Keuper, Eindhoven NL
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20100254115 | COLOR-TUNABLE ILLUMINATION SYSTEM, LAMP AND LUMINAIRE - The invention relates to a color-tunable illumination system ( | 10-07-2010 |
Matthijs H. Keuper, San Jose, CA US
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20080265263 | Polarized Semiconductor Light Emitting Device - A light emitting device includes a light emitting diode (LED), a concentrator element, such as a compound parabolic concentrator, and a wavelength converting material, such as a phosphor. The concentrator element receives light from the LED and emits the light from an exit surface, which is smaller than the entrance surface. The wavelength converting material is, e.g., disposed over the exit surface. The radiance of the light emitting diode is preserved or increased despite the isotropic re-emitted light by the wavelength converting material. In one embodiment, the polarized light from a polarized LED is provided to a polarized optical system, such as a microdisplay. In another embodiment, the orthogonally polarized light from two polarized LEDs is combined, e.g., via a polarizing beamsplitter, and is provided to non-polarized optical system, such as a microdisplay. If desired, a concentrator element may be disposed between the beamsplitter and the microdisplay. | 10-30-2008 |
Matthijs Hendrik Keuper, Eindhoven NL
Patent application number | Description | Published |
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20100328926 | ILLUMINATION DEVICE WITH LED AND ONE OR MORE TRANSMISSIVE WINDOWS - The invention provides an illumination device ( | 12-30-2010 |
Matthijs Hendrik Keuper, Geldrop NL
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20130188387 | LED LIGHTING SYSTEM COMPRISING AN OPTICAL SYSTEM SUITABLE FOR PROVIDING A LIGHT BEAM - An optical system having a light guide ( | 07-25-2013 |