Patents Represented by Attorney, Agent or Law Firm Helfgott & Karas, P.G.
  • Subscriber circuit
    Patent number: 6310953
    Abstract: In a subscriber circuit implementing the analog system, the 2B1Q system and the ping-pong system, a signal processing unit is divided into a signal output unit for outputting a signal for transmission and a bias unit for providing a voltage, the signal output unit being implemented by an amplifier unit characterized by a low withstand voltage and a broadband characteristic, and the bias unit is implemented by an amplifier unit characterized by a high withstand voltage and a narrowband characteristic.
    Type: Grant
    Filed: April 28, 1998
    Date of Patent: October 30, 2001
    Assignee: Fujitsu Limited
    Inventors: Kazuhiro Yoshida, Kenji Takato
  • Seal device for rolling bearing
    Patent number: 5577845
    Abstract: A shield plate for use in an outer race is made from a metal plate in a circular ring shape so as to have notches on its periphery, such that part of the peripheral portions between adjacent notches are folded more strongly than the remaining peripheral portions so as to be a suitable prop for fitting into the outer race, preventing the outer race from being deformed by fitting of the shield plate.
    Type: Grant
    Filed: November 14, 1995
    Date of Patent: November 26, 1996
    Assignee: NSK Ltd.
    Inventors: Yasutaka Ishida, Hironori Suzuki, Shuji Sudo
  • Reciprocating piston engine
    Patent number: 5562076
    Abstract: A reciprocating piston engine, in particular a single-cylinder Diesel engine (2), has an air filter (1) in the suction pipe (3). To service the same, a pressure gauge (13) is arranged downstream of the filter cartridge (7), in the direction of flow. A check valve is provided at the measurement site or in the measurement pipe (12) between the measurement site and the pressure gauge (13).
    Type: Grant
    Filed: August 23, 1995
    Date of Patent: October 8, 1996
    Assignee: Motorenfabrik Hatz-GmbH & Co. KG
    Inventor: Albert Madl