Patents by Inventor Osamu Asano
Osamu Asano 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: 5447397Abstract: An apparatus for fixing an annular cutter to an arbor comprises an arbor and a rotation transmitting member coaxially fixed to the arbor. Inclined grooves which receives locking pins extend from the inner peripheral surface to the outer peripheral surface of the rotation transmitting member toward the arbor. A guide ring is axially slidably mounted on the rotation transmitting member and has pressing faces and restricting grooves defined by the pressing faces. Each restricting groove has a dimension which can receive the respective locking pin. A holding mechanism is provided for holding the guide ring in a normal state in which the pressing faces press the locking pins inward along the inclined grooves. The holding mechanism can moved toward the arbor together with the guide ring so as to allow the locking pins to enter the restricting grooves. An annular cutter has a cutter body and a shank connected to the cutter body and inserted into said rotation transmitting member.Type: GrantFiled: January 28, 1994Date of Patent: September 5, 1995Assignee: Nitto Kohki Co., Ltd.Inventor: Osamu Asano
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Patent number: 5438045Abstract: A triazolo-1,4-di-azepine compound of the below given formula and a pharmacologically acceptable salt thereof are disclosed and useful in the pharmaceutical field, especially to allergic diseases. ##STR1## in which R1 and R2 are hydrogen or an alkyl, R3 is hydrogen or a halogen, R4 is hydrogen or an alkyl, X is --OOO--, --NHCO--, --CO-- or others and Y is a cycloalkyl, a cycloalkylalkyl, an alkynyl or others.Type: GrantFiled: April 27, 1993Date of Patent: August 1, 1995Assignee: Eisai Co., Ltd.Inventors: Kazuo Okano, Shuhei Miyazawa, Richard S. J. Clark, Shinya Abe, Tetsuya Kawahara, Naoyuki Shimomura, Osamu Asano, Hiroyuki Yoshimura, Mitsuaki Miyamoto, Yoshimori Sakuma, Kenzo Muramoto, Hiroshi Obaishi, Koukichi Harada, Hajime Tsunoda, Satoshi Katayama, Kouji Yamada, Shigeru Souda, Yoshimasa Machida, Kouichi Katayama, Isao Yamatsu
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Patent number: 5429457Abstract: An annular cutter connecting apparatus includes an arbor, annular cutter fixing locking members received in holding holes formed in the lower end portion of the arbor and a sleeve member surrounding the lower end portion of the arbor, for fixing an annular cutter to the arbor. The sleeve has a first control face having an inner diameter equal to the outer diameter of the lower end portion of the arbor, for projecting the locking members into the central bore by a predetermined length when the first control face engages the locking members, and second control faces formed circumferentially in the first control face, for receiving the locking members. The sleeve is rotatable around its own axis so as to cause the locking members to selectively face the first control face and the second control faces, respectively.Type: GrantFiled: November 7, 1994Date of Patent: July 4, 1995Assignee: Nitto Kohki Co., Ltd.Inventors: Osamu Asano, Yutaka Tanaka
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Patent number: 5427482Abstract: An annular cutter connecting apparatus includes an arbor, annular cutter fixing locking members received in holding holes formed in the lower end portion of the arbor and a sleeve member surrounding the lower end portion of the arbor, for fixing an annular cutter to the arbor. The sleeve has a first control face having an inner diameter equal to the outer diameter of the lower end portion of the arbor, for projecting the locking members into the central bore by a predetermined length when the first control face engages the locking members, and second control faces formed circumferentially in the first control face, for receiving the locking members. The sleeve is rotatable around its own axis so as to cause the locking members to selectively face the first control face and the second control faces, respectively.Type: GrantFiled: June 29, 1994Date of Patent: June 27, 1995Assignee: Nitto Kohki Co., Ltd.Inventors: Osamu Asano, Yutaka Tanaka
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Patent number: 5409909Abstract: A triazolo-1,4-di-azepine compound of the below given formula and a pharmacologically acceptable salt thereof are disclosed and useful in the pharmaceutical field, especially to treat allergic diseases: ##STR1## in which R1 and R2 are hydrogen or an alkyl, R3 is hydrogen or a halogen, R4 is hydrogen or an alkyl, X is --OCO--, --NHCO--, --CO-- or others and Y is a cycloalkyl, a cycloalkylalkyl, an alkynyl or others.Type: GrantFiled: March 18, 1994Date of Patent: April 25, 1995Assignee: Eisai Co., Ltd.Inventors: Kazuo Okano, Shuhei Miyazawa, Richard S. J. Clark, Shinya Abe, Tetsuya Kawahara, Naoyuki Kimomura, Osamu Asano, Hiroyuki Yoshimura, Mitsuaki Miyamoto, Yoshimori Sakuma, Kenzo Muramoto, Hiroshi Obaishi, Koukichi Harada, Hajime Tsunoda, Satoshi Katayama, Kouji Yamada, Shigeru Souda, Yoshimasa Machida, Kouichi Katayama, Isao Yamatsu
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Patent number: 5382579Abstract: A triazolo-1,4-azepine compound of the below given formulas and a pharmacologically acceptable salt thereof are disclosed and useful in the pharmaceutical field, especially to allergic diseases. ##STR1## in which R1 and R2 are hydrogen or an alkyl, R3 is hydrogen or a halogen, R4 is hydrogen or an alkyl, X is --OCO--, --NHCO--, --CO-- or others and Y is a cycloalkyl, a cycloalkylalkyl, an alkynyl or others.Type: GrantFiled: August 26, 1991Date of Patent: January 17, 1995Assignee: Eisai Co., Ltd.Inventors: Kazuo Okano, Shuhei Miyazawa, Richard S. J. Clark, Shinya Abe, Tetsuya Kawahara, Naoyuki Shimomura, Osamu Asano, Hiroyuki Yoshimura, Mitsuaki Miyamoto, Yoshimori Sakuma, Kenzo Muramoto, Hiroshi Obaishi, Koukichi Harada, Hajime Tsunoda, Satoshi Katayama, Kouji Yamada, Shigeru Souda, Yoshimasa Machida, Kouichi Katayama, Isao Yamatsu
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Patent number: 5304553Abstract: A triazolo-1,4-di-azepine compound of the below given formula and a pharmacologically acceptable salt thereof are disclosed and useful in the pharmaceutical field, especially to allergic diseases, ##STR1## in which R.sup.1 and R.sup.2 are hydrogen or an alkyl, R.sup.3 is hydrogen or a halogen, R.sup.4 is hydrogen or an alkyl, X is --OCO--, --NHCO--, --CO-- or others and Y is a cycloalkyl, a cycloalkylalkyl, an alkynyl or others.Type: GrantFiled: May 28, 1993Date of Patent: April 19, 1994Assignee: Eisai Co., Ltd.Inventors: Kazuo Okano, Shuhei Miyazawa, Richar S. J. Clark, Shinya Abe, Tetsuya Kawahara, Naoyuki Shimomura, Osamu Asano, Hiroyuki Yoshimura, Mitsuaki Miyamoto, Yoshimori Sakuma, Kenzo Muramoto, Hiroshi Obaishi, Koukichi Harada, Hajime Tsunoda, Satoshi Katayama, Kouji Yamada, Shigeru Souda, Yoshimasa Machida, Kouichi Katayama, Isao Yamatsu
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Patent number: 5273985Abstract: A glycerin derivative having the following formula (I) or (I') and a pharmacologically acceptable salt thereof are useful to treat diseases caused by the platelet activating factor.Type: GrantFiled: June 4, 1991Date of Patent: December 28, 1993Assignee: Eisai Co., Ltd.Inventors: Kazuo Okano, Osamu Asano, Naoyuki Shimomura, Tetsuya Kawahara, Shinya Abe, Shuhei Miyazawa, Mitsuaki Miyamoto, Hiroyuki Yoshimura, Koukichi Harada, Junsaku Nagaoka, Tsutomu Kawata, Tsutomu Yoshimura, Hiromasa Suzuki, Shigeru Souda, Yoshimasa Machida, Kouichi Katayama, Isao Yamatsu
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Patent number: 5233887Abstract: A quick return mechanism for a drilling machine comprises an input shaft, an output shaft, an overdrive gear train and a speed-reduction gear train, each disposed between the input and output shafts, a first clutch for connecting the output shaft to the input shaft through the over-drive gear train when a motor for driving the input shaft rotates in the quick-return direction and disconnecting the output shaft from the input shaft when the motor rotates in the feed direction, a second clutch selectively set at a first position and a second position, for connecting the output shaft to the input shaft through the speed-reduction gear train at the first position when the motor is rotated in the feed direction, and disconnecting the output shaft from the input shaft through the speed-reduction gear train at the second position, when the motor rotates in the quick-return direction, and a rotation=linear-movement converting unit for setting the second clutch at the first position when the motor rotates in the feedType: GrantFiled: August 11, 1992Date of Patent: August 10, 1993Assignee: Nitto Kohki Co., Ltd.Inventors: Osamu Asano, Michihiro Shoji
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Patent number: 5221671Abstract: A triazolo-1,4-di-azepine compound of the below given formulas and a pharmacologically acceptable salt thereof are disclosed and useful in the pharmaceutical field, especially to allergic diseases. ##STR1## in which R1 and R2 are hydrogen or an alkyl, R3 is hydrogen or a halogen, R4 is hydrogen or an alkyl, X is --OCO--, --NHCO--, --CO-- or others and Y is a cycloalkyl, a cycloalkylalkyl, an alkynyl or others.Type: GrantFiled: October 17, 1991Date of Patent: June 22, 1993Assignee: Eisai Co., Ltd.Inventors: Kazuo Okano, Shuhei Miyazawa, Richard S. J. Clark, Shinya Abe, Tetsuya Kawahara, Naoyuki Shimomura, Osamu Asano, Hiroyuki Yoshimura, Mitsuaki Miyamoto, Yoshimori Sakuma, Kenzo Muramoto, Hiroshi Obaishi, Koukichi Harada, Hajime Tsunoda, Satoshi Katayama, Kouji Yamada, Shigeru Souda, Yoshimasa Machida, Kouichi Katayama, Isao Yamatsu
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Patent number: 5087157Abstract: The states of contact switches are switched when a mode switch is turned on. If the drilling operation is effected by means of a drill motor in this state, an oscillation signal which is repeatedly set to "H" and "L" in a preset period corresponding to an output of an oscillator is supplied to the control terminal of a firing pulse generator. The firing pulse generator interrupts supply of the control signal to the control terminal of a triac in the above preset period based on the oscillation signal supplied to the control terminal thereof to interrupt supply of an AC power source from a commercial AC power source to a bridge-type rectifier so as to intermittently drive a feed motor which is energized by an output of the rectifier in the above preset period. As a result, the drill motor can be intermittently fed towards a to-be-worked object by means of the feed motor, and, when the feeding operation is interrupted, a cutting operation can be instantaneously stopped and swarf can be cut apart.Type: GrantFiled: January 23, 1991Date of Patent: February 11, 1992Assignee: Nitto Kohki Co., Ltd.Inventors: Michihiro Shoji, Osamu Asano
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Patent number: 5037827Abstract: A glycerin derivative having the following formula (I) or (I') and a pharmacologically acceptable salt thereof are useful to treat diseases caused by the platelet activating factor.Type: GrantFiled: June 29, 1989Date of Patent: August 6, 1991Assignee: Eisai Co., Ltd.Inventors: Kazuo Okano, Osamu Asano, Naoyuki Shimomura, Tetsuya Kawahara, Shinya Abe, Shuhei Miyazawa, Mitsuaki Miyamoto, Hiroyuki Yoshimura, Koukichi Harada, Junsaku Nagaoka, Tsutomu Kawata, Tsutomu Yoshimura, Hiromasa Suzuki, Shigeru Souda, Yoshimasa Machida, Kouichi Katayama, Isao Yamatsu
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Patent number: 5035549Abstract: A boring apparatus wherein the size in the axial direction of the shaft of the manual handle horizontally supported can be made small-sized. A clutch is composed of spherical bodies, a cylindrical body having formed therein hole portions for receiving the spherical bodies, spherical body pressing means for pressing the spherical bodies to the outside or inside of the cylindrical body, and an engagement member having recessed portions engaging with the spherical bodies which are projected to the outside or inside of the cylindrical body, and the boring apparatus is constructed by using the clutch.Type: GrantFiled: June 19, 1990Date of Patent: July 30, 1991Assignee: Nitto Kohki Co., Ltd.Inventors: Osamu Asano, Michihiro Shoji, Masunari Kowada
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Patent number: 4854787Abstract: A boring device has a spindle moving mechanism which retards a tool spindle when the spindle rotates through a predetermined angle. The mechanism has coaxial first and second thrust rings. Thrust balls are disposed between the thrust rings in rolling contact therewith. A retaining element holds the thrust balls such that they keep constant circumferential spaces therebetween. The first thrust ring is fixed to the tool spindle and has recesses in the surface facing the second thrust ring. The second thrust ring is fixed to the casing of the boring device. As the first thrust ring is rotated by the tool spindle, the thrust balls are fitted in the respective recesses, whereby the tool retards by the amount equal to the depth of the recesses. Then, cutting edges of a cutter is separated from the face of a workpiece which is being cut, and a continuous chip is broken into pieces having a predetermined length and is removed from a hole being formed.Type: GrantFiled: June 2, 1988Date of Patent: August 8, 1989Assignee: Nitto Kohki Co., Ltd.Inventors: Yasumasa Ooki, Osamu Asano, Toshio Mikiya
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Patent number: 4824299Abstract: A chip breaking device for annular cutters has a comb-shaped member fixed to the front wall of a boring machine. The comb-shaped member includes a stem extending in parallel with the annular cutter rotated by the boring machine and three or more elongated chip breaking elements extending perpendicularly from the stem and into proximity to the outer periphery of the annular cutter. Chips formed by the annular cutter hit against the chip breaking elements and their tip portions are caught by the elements. Then, intermediate portions pass through the spacings between the adjacent chip breaking elements. Thereafter the chips are pulled and broken into pieces.Type: GrantFiled: November 17, 1987Date of Patent: April 25, 1989Assignee: Nitto Kohki Co., Ltd.Inventors: Michihiro Shoji, Osamu Asano
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Patent number: D329438Type: GrantFiled: December 19, 1990Date of Patent: September 15, 1992Assignee: Nitto Kohki Co., Ltd.Inventors: Osamu Asano, Michihiro Shouji, Masunari Kowada, Toshio Mikiya
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Patent number: D348074Type: GrantFiled: October 27, 1992Date of Patent: June 21, 1994Assignee: Nitto Kohki Co. Ltd.Inventor: Osamu Asano
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Patent number: D360641Type: GrantFiled: July 26, 1994Date of Patent: July 25, 1995Assignee: Nitto Kohki Co., Ltd.Inventor: Osamu Asano
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Patent number: D361579Type: GrantFiled: July 26, 1994Date of Patent: August 22, 1995Assignee: Nitto Kohki Co., Ltd.Inventor: Osamu Asano
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Patent number: D361776Type: GrantFiled: July 26, 1994Date of Patent: August 29, 1995Assignee: Nitto Kohki Co., Ltd.Inventor: Osamu Asano