Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
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| Number | Title | Issue Date |
| 8164540 | Antenna device An improved antenna device is has an external length compensation device, permitting a differing length expansion of the housing/radome relative to at least one of the at least two external mounting devices for fixing the antenna device. At least one of the two moun... | 04/24/2012 |
| 8120444 | Circuit for separating or combining high frequency power An improved component for the separation or combination of high frequency outputs includes a coaxial input port located at the front end of the outer conductor. At the opposite end of the outer conductor, a head is located with at least two, and preferably three or ... | 02/21/2012 |
| 7999752 | Dipole shaped radiator arrangement An improved dipole-shaped radiator arrangement is characterized by the following features: a base is disconnected from ground or a ground surface with respect to direct current, or is capacitively coupled to a ground surface; a first dipole or radiator half is elect... | 08/16/2011 |
| 7999751 | Magnetically coupling near-field RFID antenna An improved magnetically coupling near-field RFID antenna is embodied as a magnetic H-field coupler, and the near-field RFID antenna is embodied as a looped and/or frame-shaped antenna. The looped and/or frame-shaped antenna comprises a looped or frame-shaped strip ... | 08/16/2011 |
| 7936306 | Multilayer antenna arrangement A multilayer antenna arrangement is distinguished in particular by the following features: a further patch antenna (B) comprising a dielectric carrier and a radiation plane is provided above the base portion or central portion of the patch arrangement, the radiation... | 05/03/2011 |
| 7868835 | Beam shaping means for external and/or roof antennas on vehicles, and associated antenna An improved beam shaping means for an external and/or roof antenna has a parasitic beam shaping means configured at a distance below the upper or outer surface of the electrically non-conductive region of the vehicle structure. The parasitic beam shaping means is co... | 01/11/2011 |
| 7852268 | RFID antenna system An RFID antenna system with the following features: the RFID antenna device, with respect to the goods identification system (GIS) or a side limit receiving this RFID antenna device, comprises at least two antenna, the at least two antennae for the goods identificat... | 12/14/2010 |
| 7821460 | Tunable patch antenna of planar construction An improved tunable antenna of planar construction is distinguished by the following features: in plan view perpendicular to the effective surface (7), the electrically conductive structure (13, 113) completely or par... | 10/26/2010 |
| 7777593 | High frequency filter with blocking circuit coupling An improved high frequency filter displays the following features: the high frequency filter displays transmission behavior with a coupling impedance resonance having at least one blocking point at a frequency, the blocking point at the frequency being adjustable by... | 08/17/2010 |
| 7777590 | HF socket An improved HF socket or HF plug socket for connecting to a coaxial wiring system comprises an integrated monitoring means comprising a monitoring circuit arranged in a feed path extending in the HF socket between an interface for connecting a receiver and a junctio... | 08/17/2010 |
| 7750763 | Waveguide bend having a square shape cross-section An improved 90° waveguide bend has the following features: the waveguide bend has two waveguide connectors located perpendicularly to each other, the waveguide connectors have a square internal cross section havin... | 07/06/2010 |
| 7741999 | Multilayer antenna of planar construction A multilayer antenna of planar construction comprises an electrically conductive ground face and a conductive radiation face which is arranged with lateral spacing from the ground face and extends substantially parallel thereto. A dielectric carrier is arranged betw... | 06/22/2010 |
| 7728700 | High frequency filter in a coaxial construction, in particular in the manner of a high frequency separating filter (for example a duplex separating filter) or a bandpass filter or band-stop filter An improved high frequency filter in a coaxial construction with one or a plurality of resonators has a thread pitch or thread pitch angle of an external thread of a thread-like tuning element which differs from the thread pitch or the thread pitch angle of the inte... | 06/01/2010 |
| 7710331 | Multilayer antenna having a planar design An improved multilayer antenna has patch assembly divided at least into two. It comprises, in addition to the primary patch element, a secondary patch additional element. The patch element and the patch additional element can be positioned toward one another and at ... | 05/04/2010 |
| 7679576 | Antenna arrangement, in particular for a mobile radio base station An improved antenna arrangement comprises at least a dipole-shaped radiator arrangement with the associated carrying device and/or balancing device and the associated dipole and/or radiator halves as well as the reflector or the part reflector or the reflector frame... | 03/16/2010 |
| 7626547 | Embedded planar antenna with pertaining tuning method A patch antenna comprising an electrically conductive ground plane; a first dielectric substrate layer arranged on said ground plane and having a first relative permittivity; at least one electrically conductive effective area arranged on the first dielectric substr... | 12/01/2009 |
| 7579999 | Dual polarized dipole radiator An improved dual polarized radiator is distinguished, inter alia, by the following features: the dual polarized dipole radiator is made from a strip and/or board material, in particular a metal sheet, the dual polarized dipole radiator is constructed in one piece, a... | 08/25/2009 |
| 7510434 | Coaxial HF plug-in connector A coaxial HF plug-in connector comprises an axial bore embodied in an external conductor material on a connection side, in which an electric component is arranged. The aim is to improve the connector. For this purpose, the component in the axial bore is embodied in ... | 03/31/2009 |
| 7489215 | High frequency filter The invention relates to a high frequency filter of coaxial construction, comprising an outer conductor housing with a housing base and a housing wall, whereby several resonators are embodied in the outer conductor housing, each comprising an inner conductor tube, e... | 02/10/2009 |
| 7486162 | High frequency filter An improved high frequency filter of coaxial construction comprises one or more resonators having an electrically conductive internal conductor configured as an internal conductive tube and an electrically conductive external conductor. An electrically conductive ba... | 02/03/2009 |
| 7460073 | RFID antenna system An RFID antenna system for a goods identification system with the following features: the RFID antenna device and/or a side limit receiving this RFID antenna device comprise(s) at least two antenna, the at least two antennae for the goods identification system (GIS)... | 12/02/2008 |
| 7427966 | Dual polarized antenna A dual polarized antenna with at least one dual polarized radiator device comprises a reflector (3) and longitudinal or transverse webs (9, 11) provided at least on its longitudinal side and/or on its transverse side. The improvement is distinguished b... | 09/23/2008 |
| 7358924 | Feed network, and/or antenna having at least one antenna element and a feed network An antenna feed network is provided with a capacitive coupling device via which a capacitive connection exists to a coupled line. The coupled line section is firmly connected to the downstream appliance or antenna element, or is part of the appliance or antenna elem... | 04/15/2008 |
| 7358904 | Remote-control device, particularly remote-control central lock for motor vehicles A remote-control device, particularly a remote-control central lock for motor vehicles, comprising an electrical device which is preferably mounted in a housing and an antenna. The inventive remote-control device is further characterized by the following: the antenn... | 04/15/2008 |
| 7252513 | Coaxial RF connection device electrically connected to a printed circuit board as well as associated connector unit An improved plug connection device has projections aligned parallel with the axial direction of the connectors, by means of which the connector unit is positioned or can be positioned perpendicularly to the plane of the printed circuit board. The connector unit has,... | 08/07/2007 |
| 7245267 | Mobile radio antenna radome with integral reflector An improved radome comprises at least one conductive flat structure integrally incorporated in the material of the radome, which acts as a reflector for a mobile radio antenna at least partially enclosed within the radome. ... | 07/17/2007 |
| 7194006 | Directed maximum ratio combining methods and systems for high data rate traffic Methods are provided for choosing mobile stations that have low cross correlations between their array response vectors, thereby minimizing inter-cell interference through uneven average reverse link data rates experienced by the mobile stations and minimizing intra... | 03/20/2007 |
| 7193572 | Roof antenna for motor vehicles The invention concerns a space craft, such as a telecommunication geostationary satellite, comprising a body, at lease one main telecommunication antenna having a specific orientation relative to the body, at least an omnidirectional antenna having a field of view o... | 03/20/2007 |
| 7158082 | Low-height dual or multi-band antenna, in particular for motor vehicles The invention relates to an improved, low-height dual or multi-band antenna comprising surface transmitters, whose size varies in accordance with the frequency band to be transmitted. Said antenna is configured from a smaller surface transmitter that is located on t... | 01/02/2007 |
| 7140913 | Apparatus for connection of a coaxial cable to a housing A housing has a integral coaxial cable connector including a holder for a coupling element. The coupling element has an insertion opening into which a connecting element, in which a coaxial cable is positioned, can be inserted in a direction which is essentially at ... | 11/28/2006 |
| 7138954 | Antenna assembly comprising a surface dipole An improved antenna assembly, wherein: the opposing end regions of the dipole halves are each electrically connected to a respective connection line; the connection lines lead to two amplifiers; the outputs of both amplifiers are connected to the two inputs of a tra... | 11/21/2006 |
| 7132979 | Calibration apparatus for a switchable antenna array, and an associated operating method A calibration device for a switchable antenna array, distinguished by the following improvements provides at least two inputs of two or more available inputs of the beam forming network fed simultaneously and/or jointly and/or in the same phase. The antenna elements... | 11/07/2006 |
| 7132995 | Antenna having at least one dipole or an antenna element arrangement similar to a dipole An improved antenna includes a coupling element in the form of a rod. The coupling element is electrically conductive and extends transversely with respect to the reflector plane is provided on the front face of the reflector. A mount device has an axial hole in the... | 11/07/2006 |
| 7117014 | System and method for selecting optimized beam configuration Disclosed are systems and methods which provide communication links optimized with respect to particular subscriber units. Preferred embodiments utilize multiple information components with respect to the arrival of signals associated with target subscriber units in... | 10/03/2006 |
| 7096040 | Passive shapable sectorization antenna gain determination Disclosed are systems and methods which provide communication network antenna pattern configuration for optimized network operation. Preferably, a statistical smart antenna configuration is provided in which antenna patterns associated with various base stations of ... | 08/22/2006 |
| 7085240 | Directed maximum ratio combining and scheduling of high rate transmission for data networks Disclosed are systems and methods which proactively determine particular access terminals which are compatible for simultaneous communication at a high data rate and preferred embodiments provide scheduling of simultaneous communications such that data communication... | 08/01/2006 |
| 7079083 | Antenna, in particular a mobile radio antenna An antenna, in particular a mobile radio antenna, operates in at least two frequency bands. Two or more dipole antenna elements are provided and are arranged in front of a reflector, which transmit and receive in two different frequency bands. The distance between t... | 07/18/2006 |
| 7079809 | Systems and methods for providing improved wireless signal quality using diverse antenna beams The present invention is directed to wireless communication, and more particularly, to providing improved signal quality using antenna beam selection and/or switching techniques. Embodiments of the present invention may measure the carrier-to-interference (C/I) leve... | 07/18/2006 |
| 7075385 | Impedance converter device An impedance converter device comprises an electrically conductive external conductor with one or more connection locations for electrical lines, an electrically conductive internal conductor with one or more connection locations for electrical lines, and also a die... | 07/11/2006 |
| 7075498 | Stationary mobile radio antenna An improved antenna arrangement includes a passive and electrically conductive element comprising a beamforming element. The at least one beamforming element is subdivided into at least two sections, specifically a mounting section and an operating section, which is... | 07/11/2006 |
