Protective Of Safety Devices For Personnel Patents (Class 331/63)
  • Patent number: 7099647
    Abstract: A single chip direct conversion transceiver that includes a substrate on which a mixer unit and a local oscillator are provided as a circuit, and a positive hole formed between the mixer unit and the local oscillator and filled with a conductive plug to block signal leakage. A shield ground surface is formed above the substrate and blocks signal leakage occurring when the signals received through the antenna are input into the mixer and signal leakage occurring when the reference signal is input into the mixer from the local oscillator. A first interconnection is formed above the shield ground surface and connects the mixer unit and the local oscillator. Dielectric layers are formed between the substrate and the shield ground surface and on the shield ground surface to cover the first interconnection.
    Type: Grant
    Filed: January 29, 2004
    Date of Patent: August 29, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sang-hyun Woo, Jong-ae Park
  • Patent number: 4255691
    Abstract: An electronic photoflash device includes a high voltage DC generator, a main storage capacitor and a reflector backed photoflash tube unit mounted on an insulating substrate on which are printed a high voltage conductor line connecting first terminals of the generator, capacitor and tube and a ground conductor line connecting their opposite terminals. The ground line surrounds and is proximate the high-voltage line so that the deposition of water on the substrate extends between and short-circuits the lines to discharge the high-voltage and eliminates the risk of an electric shock to the device operator. Alternative arrangements may be provided for surrounding the high-voltage conductor with the ground conductor, the conductors having proximate bare portions bridged by a surface which, when moistened, short circuits the conductors.
    Type: Grant
    Filed: April 27, 1979
    Date of Patent: March 10, 1981
    Assignee: Minolta Camera Kabushiki Kaisha
    Inventors: Tetsuhiko Inagaki, Toshinori Imura
  • Patent number: 4032860
    Abstract: An apparatus for treating tumors, both benign and malignant, such as carcinoma, sarcoma, cysts and avascular lesions, in animals, such as humans, by radio frequency heating at the location of the tumor in the host having an adjustable, stable output level with fail-safe feature.
    Type: Grant
    Filed: July 11, 1975
    Date of Patent: June 28, 1977
    Inventor: Harry H. LeVeen