Patents Assigned to Robert GmbH Bosch
  • Patent number: 4998781
    Abstract: The invention relates to a brake device for a hydraulic vehicle brake system. In this device, a return feed pump located in a feed pump housing is supported at several points between an assembly housing and a fastening plate and is movable relative to the other components. The mounting is done by screws resting in bearing tubes, the screws being surrounded by elastic damping sleeves in order to enable the elastic mobility of the feed pump housing. The line connections between the feed pump housing and the assembly housing are made by small connecting tubes resting in housing bores in the feed pump housing on one side and in the assembly housing on the other. The through bore extending through the feed pump housing in this region is sealed off on the side of the feed pump housing opposite the small connecting tubes by bolts, which with their part remote from the feed pump housing rest on the fastening plate.
    Type: Grant
    Filed: September 8, 1989
    Date of Patent: March 12, 1991
    Assignee: Robert GmbH Bosch
    Inventors: Georg Kehl, Heinz Siegel, Helmut Deringer, Dietmar Rischen, Andreas Abbing, Alfred Bullinger
  • Patent number: 4886037
    Abstract: To prevent spurious sparks from arising at a spark plug (6) connected to the secondary (3) of an ignition coil upon sudden current rise through the primary (2) when a switching transistor (4) serially connected with the primary becomes conductive, the primary (2) of the ignition coil is serially connected with another resistor (7) to form one branch of a bridge circuit, the other branch being formed by two resistors (8, 9) connected in parallel with said first branch.The diagonal terminals (11, 11') are connected to a source of reference voltage (Uref), formed for example by a Zener diode (12) and the emitter-base path of a control transistor (13), the collector of which is connected to the base of a driver transistor (14) which is controlled from an ignition control source (i) either to conduction or non-conduction to, in turn and 180.degree. out of phase, control non-conduction and conduction of the switching transistor (4).
    Type: Grant
    Filed: March 17, 1987
    Date of Patent: December 12, 1989
    Assignee: Robert GmbH Bosch
    Inventor: Richard Schleupen
  • Patent number: 4240103
    Abstract: A method and a circuit for the additive and multiplicative spurious signal compensation of a video signal are proposed. For additive spurious signal compensation, a signal is derived from the "black level" signal, stored, read-out in synchronism with the video signal to be corrected and the thus formed correction signal is subtracted from the video signal. For multiplicative spurious signal compensation, a signal is derived from the "white level" signal, its reciprocal value is formed, stored, read-out in synchronism with the video signal to be corrected and the thus formed correction signal is multiplied with the video signal. A three channel system for color television signals is disclosed.
    Type: Grant
    Filed: September 17, 1979
    Date of Patent: December 16, 1980
    Assignee: Robert GmbH Bosch
    Inventors: Dieter Poetsch, Werner Becker