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4648131 Work helmet having transmitter-receiver for light signal
New
4648128 MICROWAVE INTEGRATED CIRCUIT IMMUNE TO ADVERSE SHIELDING EFFECTS Hiroshi Saka, Toshihide Tanaka, Osaka, Japan assigned to Matsushita Electric Industrial Co Ltd A microwave integrated circuit comprises a shield case having a pair of opposed first and second end walls, a pair of side walls and top and bottom walls, and a dielectric substrate on the bottom wall. First and second interconnected integrated circuit portions are arranged on the substrate between the first and second end walls. An input strip line is arranged on the substrate, the strip line having one end coupled to the input of the first integrated circuit portion and the other end terminating at a position spaced from the first end wall by a distance approximately equal to an integral multiple of the halfwavelength of a signal propagating in the shield case. An elongated coupling member is disposed in parallel with the first end wall, the coupling member extending from the other end of the input strip line to an external circuit.
VII
Patents
band is worn about the head as a crown, it then provides beneficial thermal effects as the wearer listens to the radio through a pair of earphones which depend from the crown. The headband is constituted by a central pouch adapted to receive both the cartridge and a flexible card in front thereof having a metallized face, and a pair of hollow fabric wings extending from opposite ends of the pouch. When the band is encircled about the head and the wings are joined to define the crown, the cartridge in the pouch then lies in heat-exchange relationship with the brow of the wearer. Disposed in one wing is the miniature radio set in a flat format which is powered from a small battery pack disposed in the other wing, the antenna terminal of the radio being connected to the metalhzed face of the card which serves both as the antenna and as a back reflector for radiation emanating from the cartridge. Connected to the audio output of the set are a pair of flexible lines, one going out of one wing and terminating in one earphone, the other going out of the other wing and terminating in the other earphone.
4648131 WORK HELMET HAVING TRANSMITTER-RECEIVER FOR LIGHT SIGNAL
4648129 FREQUENCY
CONVERTER
Kenji Hirai, Hideki Torizuka, Yokohama, Japan assigned to Kabushiki Kaisha Toshiba A frequency converter includes a mixer, a local oscillator connected to the mixer by a line which transmits a local oscillator signal to the mixer and a starter circuit for supplying a transient bias current to the mixer for insuring the start of the local oscillations.
4648130 RADIO-THERMAL
HEADBAND
Lawrence Kuznetz A fabric headband which incorporates a replaceable thermal cartridge and is integrated with a miniature radio set whereby when the
Toshiyuki Kawaguchi, Hiroyuki Katsukawa, Kaxumi Nakanishi, Naoki Tanaka, Inuyama, Japan assigned to NGK Insulators Ltd A work helmet for effecting an intercommunication between workers as well as between a central control room and respective workers, especially used for informing each workers of guide information adequate for emergency escape when a disaster occurs is disclosed. To this end, the work helmet includes a light-receiving element for receiving a light signal modulated with the guide information, an earphone for reproducing audibly the guide information, a light emitting element for emitting an outgoing light signal modulated with a speech signal supplied from a microphone, and an oscillator for generating a carrier having a frequency specific to the helmet, on which carrier said speech signal is modulated, so that the outgoing light signal is always modulated by the carrier serving as a helmet identifying signal by means of which the central control room can recognize and identify the worker wearing the helmet.
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4648128 MICROWAVE INTEGRATED CIRCUIT IMMUNE TO ADVERSE SHIELDING EFFECTS Hiroshi Saka, Toshihide Tanaka, Osaka, Japan assigned to Matsushita Electric Industrial Co Ltd A microwave integrated circuit comprises a shield case having a pair of opposed first and second end walls, a pair of side walls and top and bottom walls, and a dielectric substrate on the bottom wall. First and second interconnected integrated circuit portions are arranged on the substrate between the first and second end walls. An input strip line is arranged on the substrate, the strip line having one end coupled to the input of the first integrated circuit portion and the other end terminating at a position spaced from the first end wall by a distance approximately equal to an integral multiple of the halfwavelength of a signal propagating in the shield case. An elongated coupling member is disposed in parallel with the first end wall, the coupling member extending from the other end of the input strip line to an external circuit.
VII
Patents
band is worn about the head as a crown, it then provides beneficial thermal effects as the wearer listens to the radio through a pair of earphones which depend from the crown. The headband is constituted by a central pouch adapted to receive both the cartridge and a flexible card in front thereof having a metallized face, and a pair of hollow fabric wings extending from opposite ends of the pouch. When the band is encircled about the head and the wings are joined to define the crown, the cartridge in the pouch then lies in heat-exchange relationship with the brow of the wearer. Disposed in one wing is the miniature radio set in a flat format which is powered from a small battery pack disposed in the other wing, the antenna terminal of the radio being connected to the metalhzed face of the card which serves both as the antenna and as a back reflector for radiation emanating from the cartridge. Connected to the audio output of the set are a pair of flexible lines, one going out of one wing and terminating in one earphone, the other going out of the other wing and terminating in the other earphone.
4648131 WORK HELMET HAVING TRANSMITTER-RECEIVER FOR LIGHT SIGNAL
4648129 FREQUENCY
CONVERTER
Kenji Hirai, Hideki Torizuka, Yokohama, Japan assigned to Kabushiki Kaisha Toshiba A frequency converter includes a mixer, a local oscillator connected to the mixer by a line which transmits a local oscillator signal to the mixer and a starter circuit for supplying a transient bias current to the mixer for insuring the start of the local oscillations.
4648130 RADIO-THERMAL
HEADBAND
Lawrence Kuznetz A fabric headband which incorporates a replaceable thermal cartridge and is integrated with a miniature radio set whereby when the
Toshiyuki Kawaguchi, Hiroyuki Katsukawa, Kaxumi Nakanishi, Naoki Tanaka, Inuyama, Japan assigned to NGK Insulators Ltd A work helmet for effecting an intercommunication between workers as well as between a central control room and respective workers, especially used for informing each workers of guide information adequate for emergency escape when a disaster occurs is disclosed. To this end, the work helmet includes a light-receiving element for receiving a light signal modulated with the guide information, an earphone for reproducing audibly the guide information, a light emitting element for emitting an outgoing light signal modulated with a speech signal supplied from a microphone, and an oscillator for generating a carrier having a frequency specific to the helmet, on which carrier said speech signal is modulated, so that the outgoing light signal is always modulated by the carrier serving as a helmet identifying signal by means of which the central control room can recognize and identify the worker wearing the helmet.
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