Abstract: An aftermarket hands free unit for mobile wireless telephone use in a vehicle. The hands free unit commands the telephone to enter either an active hands free mode, AHF, or alternatively, a privacy hands free mode, PHF, in response to a user-operated switch on the unit. In one embodiment, these commands are generated by a microprocessor in the unit that sends an ID inquiry to the phone that enables the unit to identify and be used with different model phones. This microprocessor also repeats AHF and PHF commands to the telephone to maintain the desired mode. The hands free speaker in the unit is uniquely clam shelled between the housing and a circuit board, and mode switching is effected by a clever optical switch mounted in a finger recess in the unit housing. Duplexing is fixed by the unit to appropriately marry the capabilities of the phone.
May 22, 2001
December 9, 2004
Robert N. Nelson, Richard J. Augustine, Juan C. Vazquez
Abstract: A power supply with DC surge and spike protection having additional, optional power conditioning and control functions such as low voltage protection, electro mechanical interferences(EMI) protection and radio frequency interference(RFI) protection. The device is for attachment to vehicular electrical systems for protecting, conditioning or controlling the input power to electrical devices such as computers, audio and video systems, PDA's, wireless phones, and other electronic products. The power supply includes a housing having a male cigarette lighter plug inserted into a vehicular cigarette lighter plug or DC power outlet, electrical circuitry in the housing and one or more female power receptacles into which the powered electrical devices DC connectors are inserted.
Abstract: A power supply with DC surge and spike protection having additional, optional power conditioning and control functions such as low voltage protection, electro mechanical interferences(EMI) protection and radio frequency interference(RFI) protection. The device is for attachment to vehicular electrical systems for protecting, conditioning or controlling the input power to electrical devices such as computers, audio and video systems, PDA's, wireless phones, and other electronic products.
Abstract: An automated system that assesses the quality of service provided by a cellular radiotelephone system. The system uses apparatus located at a mobile station that remotely controls apparatus located at a fixed station. A cellular radiotelephone call is placed from the mobile station which is received at the fixed station. When the connection is established, commands are sent from the mobile station to the fixed station that configure and control the operation of the fixed station. Many calls between the mobile station and the fixed station are placed and received by the mobile station each under control of the mobile station. During each call, recordings are made of the progress of the call and the audio quality measurements obtained during the call from both the mobile and fixed stations perspectives.
Abstract: An integral plastic fuseholder for receiving portions of a pair of in-line electrical conductors which may be connected to a non-fused electrical adapter plug. One conductor of the pair is severed within the holder to form an open connection until the connection is completed by a flat-blade insertion fuse. A pair of female electrical terminals is located within the fuseholder with each terminal connected to a different end of the severed conductor. The fuseholder has a foldable clam-shell housing formed by a pair of foldable cover sections which are joined by a centrally disposed hinge section. The housing is opened to receive the in-line electrical conductor pair, or alternatively is folded to a closed position to retain the in-line conductor pair and to create a partially enclosed cavity which forms a fuse-insert access opening opposite the hinge section. Any inserted fuse is connected in series with the conductor terminals to complete a fused conductor connection to an adapter plug through the fuseholder.
Abstract: An alidade surveying instrument, comprising a pair of gimbeled yokes, a mounting base supporting the pair of gimbeled yokes for rotation on axes perpendicular to one another, a ranging device carried by the gimbeled yoke pair for targeting a remote object both as to elevation and azimuth, a first gear set coupled to one of the yokes and second gear set coupled to the other yoke, a pivot plate supporting one of the gears of each gear set for a varying degree of gear meshing with respect to its associated gear, and a spring for applying a variable force to the pivot plate for driving the gears of each gear set into a yielding engagement to counteract physical variations in the degree of gear set engagement as the gears of each set mesh and rotate relative to one another.
Abstract: A manually-movable, portable, cellular-system signal-strength analyzer for measuring, recording and displaying geographically-located, downlink, cellular-communication-channel signal strengths in non-vehicular pedestrian areas and also inside buildings. The analyzer has a cellular-telephone scanning receiver housed within a backpack that is worn by a human operator who traverses the areas to be analyzed. A height-adjustable antenna mast formed from a set of telescoping tubes is fixed to the exterior of the backpack. This mast supports a self-resonant antenna of fixed length whose elevation height may be varied to determine signal-strengths at different pedestrian heights. The backpack also houses a controller. A laser rangefinder which has a built-in compass inputs data to the controller concerning the geographic locations of various points traversed by the analyzer. An arm-held computer is also connected to the controller.
February 9, 1993
Date of Patent:
March 14, 1995
Kurt T. Lemke, Joseph A. Schifferdecker
Abstract: An electrical coaxial jack connector adapted for electrical interconnection with a mating plug-type coaxial connector. The coaxial jack connector has an integral molded plastic body from which external connecting wires project to form a unitary cable connector. The jack-connector body is subdivided into three body sections, namely, a contact-housing section, a grip section, and a wire strain-relief section. A contact mounting board divides the contact-housing section from the grip section. A coaxial male-pin contact and a peripheral leaf-spring contact project from a front surface of the mounting board into an access cavity defined by a cylindrical wall which forms the contact-housing body section. This cylindrical wall is formed with an internal recess or groove which is located adjacent to and in alignment with the leaf-spring contact.