Patents by Inventor Eiji Hirooka
Eiji Hirooka has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 6195003Abstract: A fire alarming system includes a plurality of terminal devices including fire sensors, transmitters, manual boxes, and/or other devices to be controlled; and a receiving device to which the plurality of terminal devices are connected. A great number of terminal devices with a manual box are connected to the receiving device. When a plurality of manual boxes are activated at the same time, the terminal devices corresponding to the activated manual boxes can be called at the same time without encountering a collision among returning-back signals transmitted from these terminal devices. That is, when a plurality of manual boxes are activated at the same time, the signal of only one of the plurality of activated manual boxes can arrive at the receiving device.Type: GrantFiled: May 14, 1999Date of Patent: February 27, 2001Assignee: Nohmi Bosai Ltd.Inventors: Nobuyuki Ichikawa, Eiji Hirooka, Keiichi Takahashi, Kenji Takeyoshi
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Patent number: 6091328Abstract: A fire alarming system includes a plurality of terminal devices including fire sensors, transmitters, manual boxs, and/or other devices to be controlled; and a receiving device to which the plurality of terminal devices are connected. A great number of terminal devices with a manual box are connected to the receiving device. When a plurality of manual boxs are activated at the same time, the terminal devices corresponding to the activated manual boxs can be called at the same time without encountering a collision among returning-back signals transmitted from these terminal devices. That is, when a plurality of manual boxs are activated at the same time, the signal of only one of the plurality of activated manual boxs can arrive at the receiving device.Type: GrantFiled: March 24, 1997Date of Patent: July 18, 2000Assignee: Nohmi Bosai Ltd.Inventors: Nobuyuki Ichikawa, Eiji Hirooka, Keiichi Takahashi, Kenji Takeyoshi
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Patent number: 5986556Abstract: A fire detector capable of readily and accurately adjusting the sensitivity there of and of not erroneously outputting any fire signal is provided with a first-stage amplifying circuit having an output adjusting variable resistor and a fire discriminating section having a reference voltage adjusting variable resistor. As a result, it is possible to adjust the amplified output to a predetermined value by the switching level of the fire discriminating section to a predetermined value by the reference voltage adjusting variable resistor.Type: GrantFiled: May 23, 1997Date of Patent: November 16, 1999Assignee: Nohmi Bosai Ltd.Inventors: Mikio Mochizuki, Eiji Hirooka, Makoto Yasukawa
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Patent number: 5872517Abstract: A fire detector capable of readily and accurately adjusting the sensitivity thereof and of not erroneously outputting any fire signal is provided with a first-stage amplifying circuit having an output adjusting variable resistor and a fire discriminating section having a reference voltage adjusting variable resistor. As a result, it is possible to adjust the amplified output to a predetermined value by the switching level of the fire discriminating section to a predetermined value by the reference voltage adjusting variable resistor.Type: GrantFiled: May 23, 1997Date of Patent: February 16, 1999Assignee: Nohmi Bosai Ltd.Inventors: Mikio Mochizuki, Eiji Hirooka, Makoto Yasukawa
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Patent number: 5670948Abstract: A fire detector capable of readily and accurately adjusting the sensitivity thereof and of not erroneously outputting any fire signal is provided with a first-stage amplifying circuit having an output adjusting variable resistor and a fire discriminating section having a reference voltage adjusting variable resistor. As a result, it is possible to adjust the amplified output to a predetermined value by the switching level of the fire discriminating section to a predetermined value by the reference voltage adjusting variable resistor.Type: GrantFiled: May 19, 1993Date of Patent: September 23, 1997Assignee: Nohmi Bosai Ltd.Inventors: Mikio Mochizuki, Eiji Hirooka, Makoto Yasukawa
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Patent number: 5486816Abstract: A photoelectric type fire detector has: a detector body; a printed circuit board disposed on the upper side of the detector body; conductive connecting members provided on the lower side of the detector body; terminal screws for simultaneously fixing the printed circuit board and the conductive connecting members to the detector body; an optic base directly placed on the upper side of the printed circuit board and having a labyrinth formed on the upper side thereof; hooks for fixing the optic base to the upper side of the printed circuit board; a light-emitting element and a light-receiving element arranged in a pair for detecting smoke; a bug screen provided on the outer periphery of the labyrinth of the optic base; an optic base cover covering the upper side of the optic base; and a protective cover covering the printed circuit board, the optic base, the bug screen and the optic base cover.Type: GrantFiled: April 23, 1993Date of Patent: January 23, 1996Assignee: Nohmi Bosai Ltd.Inventors: Yasuo Ariga, Eiji Hirooka
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Patent number: 5154074Abstract: A rolling apparatus having a width adjustment function includes a horizontal sleeve roll divided into two rolls in the axial direction and shrink-fitted over an arbor. Internal threads are formed in the inner circumference of one of the divided sleeve rolls. The arbor includes fluid passages for loading a fluid under high pressure between the sleeve roll and the arbor. A width-adjusting sleeve is movably mounted over the axial end portion of the arbor and external threads for formed in the inner side portion of the width-adjusting sleeve. The external threads of the width-adjusting sleeve are threadedly engaged with the internal threads of the sleeve roll. A clutch mechanism fixes the width-adjusting sleeve in a fixed position when a roll width adjustment is performed.Type: GrantFiled: January 24, 1991Date of Patent: October 13, 1992Assignee: Sumitomo Metal Industries, Ltd.Inventors: Tetsuro Haraguchi, Eiji Hirooka, Mitsuaki Watanabe
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Patent number: 5122164Abstract: A two bed pressure swing adsorption process is disclosed having high yield and high production rate. The process utilizes fine or normal size zeolite sieve material and relatively short cycle times. A power saving can be obtained by sequencing the various steps of the process to provide substantially continuous use of a vacuum pump.Type: GrantFiled: July 2, 1991Date of Patent: June 16, 1992Assignee: The BOC Group, Inc.Inventors: Eiji Hirooka, Jeremy P. Wheatland, Shain-Jer Doong
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Patent number: 4860416Abstract: A variable-crown roll comprises a straight arbor, and a plurality of antifriction bearings which are mounted on the arbor, each of the bearings having a cylindrical outer surface which is sloped with respect to the outer surface of the arbor, the bearings being symmetrically disposed with respect to the lengthwise center of the arbor, the slopes of the outer surfaces of the bearings on one side of the lengthwise center of the arbor being symmetric with respect to the slopes of the outer surfaces of the bearings on the other side of the lengthwise center.Type: GrantFiled: October 31, 1988Date of Patent: August 29, 1989Assignee: Sumitomo Metal IndustriesInventors: Takeshi Masui, Yoshiro Matsumoto, Atsushi Tomizawa, Eiji Hirooka