Patents by Inventor Fumito Komatsu

Fumito Komatsu 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).

  • Publication number: 20200208619
    Abstract: A plurality of guide shafts which are disposed parallel to an input/output shaft (a first input/output shaft, a second input/output shaft) are assembled in a case body which holds a cylinder in which first and second piston sets, move reciprocally. A first guide bearing, which abuts both side surfaces of a first piston body and receives only lateral pressure generated by the reciprocal movement, and a second guide bearing, which abuts both side surfaces of a second piston body and receives only lateral pressure generated by the reciprocal movement, are assembled coaxially and separated in an axial direction on each guide shaft.
    Type: Application
    Filed: September 6, 2018
    Publication date: July 2, 2020
    Applicant: YUGEN KAISHA K. R & D
    Inventor: Fumito KOMATSU
  • Patent number: 10253630
    Abstract: The object of the present invention is to provide a fluid rotary machine in which dead spaces can be reduced as much as possible even if the machine is enlarged by arranging rotary valves directly behind cylinder chambers. The fluid rotary machine in which first and second double-headed pistons (7, 8) intersecting within a case body (1, 2) move linearly back and forth within cylinders (16) due to the hypocycloid principle along with rotation of shafts (4a, 4b) and in which intake and exhaust cycles are repeated in chambers (22), wherein cylinder heads (17) for closing the cylinder chambers (22) are each provided with rotary valves (19) which are rotated by drive transmission from the shafts (4a, 4b) and which are provided with intake holes and discharge holes (19b) alternately communicated with the cylinder chambers (22) via communication channels (20a, 20b), and the rotary valves (19) intersect longitudinal axis of the opposing pistons (7, 8) and are capable of rotating parallel with output axil lines.
    Type: Grant
    Filed: February 19, 2015
    Date of Patent: April 9, 2019
    Assignee: AIR SURF MARKETING INC.
    Inventors: Isao Shimazu, Fumito Komatsu, Satoru Washio
  • Publication number: 20170022811
    Abstract: The object of the present invention is to provide a fluid rotary machine in which dead spaces can be reduced as much as possible even if the machine is enlarged by arranging rotary valves directly behind cylinder chambers. The fluid rotary machine in which first and second double-headed pistons (7, 8) intersecting within a case body (1, 2) move linearly back and forth within cylinders (16) due to the hypocycloid principle along with rotation of shafts (4a, 4b) and in which intake and exhaust cycles are repeated in chambers (22), wherein cylinder heads (17) for closing the cylinder chambers (22) are each provided with rotary valves (19) which are rotated by drive transmission from the shafts (4a, 4b) and which are provided with intake holes and discharge holes (19b) alternately communicated with the cylinder chambers (22) via communication channels (20a, 20b), and the rotary valves (19) intersect longitudinal axis of the opposing pistons (7, 8) and are capable of rotating parallel with output axil lines.
    Type: Application
    Filed: February 19, 2015
    Publication date: January 26, 2017
    Applicant: AIR SURF INC.
    Inventors: Isao SHIMAZU, Fumito KOMATSU, Satoru WASHIO
  • Patent number: 8932029
    Abstract: In the rotary type cylinder device, a first crank shaft is revolved around a shaft and a composite piston assembly is revolved around the first crank shaft in a state where first rotational mass balance relating to first and second piston units around second virtual crank shafts, second rotational mass balance relating to the composite piston assembly around the first crank shaft and third rotational mass balance relating to the first crank shaft and the composite piston assembly around the shaft are uniformly produced by only first and second balance weights which are attached to end parts of the first crank shaft. Therefore, first and second piston units, which are attached to the second cylindrical sections, are linearly reciprocally moved in radial directions of a circular orbit of second virtual crank shafts, which has radius of 2 r, with relatively revolving around the shaft.
    Type: Grant
    Filed: September 22, 2010
    Date of Patent: January 13, 2015
    Assignee: Yugen Kaisha K. R & D
    Inventor: Fumito Komatsu
  • Patent number: 8608455
    Abstract: A fluid rotary machine with a decreased footprint and a reduction in the number of parts. The fluid rotary machine has four heads wherein double-headed pistons are disposed inside cylinders in a crisscross arrangement. The rotational balance between rotational parts including the double-headed pistons is achieved only by first and second balance weights which are inserted and incorporated into both ends of a crank shaft coupled eccentrically to a shaft. The shaft is rotated for the double-headed pistons to linearly reciprocate in the cylinders. The fluid rotary machine has rotary valves for switching between the suction and discharge operations of the fluid for each cylinder chamber. The rotary valves are incorporated into a case to be coaxial and integrally rotatable with the shaft.
    Type: Grant
    Filed: July 19, 2011
    Date of Patent: December 17, 2013
    Assignees: Nippo Ltd., Yugen Kaisha K.R & D
    Inventors: Naoya Ishida, Isao Shimazu, Fumito Komatsu
  • Publication number: 20130133511
    Abstract: A fluid rotary machine with a decreased footprint and a reduction in the number of parts. The fluid rotary machine has four heads wherein double-headed pistons are disposed inside cylinders in a crisscross arrangement. The rotational balance between rotational parts including the double-headed pistons is achieved only by first and second balance weights which are inserted and incorporated into both ends of a crank shaft coupled eccentrically to a shaft. The shaft is rotated for the double-headed pistons to linearly reciprocate in the cylinders. The fluid rotary machine has rotary valves for switching between the suction and discharge operations of the fluid for each cylinder chamber. The rotary valves are incorporated into a case to be coaxial and integrally rotatable with the shaft.
    Type: Application
    Filed: July 19, 2011
    Publication date: May 30, 2013
    Applicants: YUGEN KAISHA K. R & D, NIPPO LTD.
    Inventors: Naoya Ishida, Isao Shimazu, Fumito Komatsu
  • Patent number: 8443713
    Abstract: Disclosed is a small rotary cylinder device wherein friction loss is reduced and energy is conserved by reducing effects of a reaction force applied from cylinders to pistons, which is incorporated in a piston composite body and which linearly reciprocates, the piston composite body being eccentrically connected to a first crank shaft rotating about a shaft. Guide bearings (1c) guide linear reciprocation of first and second piston assemblies (7, 8) attached to second tube bodies (6b), which are caused by rotating a first crank shaft (5) about a shaft (4) and rotating a piston composite body (P) about the first crank shaft (5), in the radial direction of a rolling circle of second imaginary crank shafts (14a, 14b), which has a radius 2r and which is centered at the shaft (4).
    Type: Grant
    Filed: February 1, 2011
    Date of Patent: May 21, 2013
    Assignees: Ikiken Co., Ltd., Yugen Kaisha K. R & D
    Inventors: Hiroshi Ogawa, Fumito Komatsu
  • Publication number: 20120315176
    Abstract: Disclosed is a small rotary cylinder device wherein friction loss is reduced and energy is conserved by reducing effects of a reaction force applied from cylinders to pistons, which is incorporated in a piston composite body and which linearly reciprocates, the piston composite body being eccentrically connected to a first crank shaft rotating about a shaft. Guide bearings (1c) guide linear reciprocation of first and second piston assemblies (7, 8) attached to second tube bodies (6b), which are caused by rotating a first crank shaft (5) about a shaft (4) and rotating a piston composite body (P) about the first crank shaft (5), in the radial direction of a rolling circle of second imaginary crank shafts (14a, 14b), which has a radius 2r and which is centered at the shaft (4).
    Type: Application
    Filed: February 1, 2011
    Publication date: December 13, 2012
    Inventors: Hiroshi Ogawa, Fumito Komatsu
  • Publication number: 20120177524
    Abstract: In the rotary type cylinder device, a first crank shaft is revolved around a shaft and a composite piston assembly is revolved around the first crank shaft in a state where first rotational mass balance relating to first and second piston units around second virtual crank shafts, second rotational mass balance relating to the composite piston assembly around the first crank shaft and third rotational mass balance relating to the first crank shaft and the composite piston assembly around the shaft are uniformly produced by only first and second balance weights which are attached to end parts of the first crank shaft. Therefore, first and second piston units, which are attached to the second cylindrical sections, are linearly reciprocally moved in radial directions of a circular orbit of second virtual crank shafts, which has radius of 2 r, with relatively revolving around the shaft.
    Type: Application
    Filed: September 22, 2010
    Publication date: July 12, 2012
    Inventor: Fumito Komatsu
  • Patent number: 7948193
    Abstract: An inexpensive, productivity-enhanced single-phase AC synchronous motor in which stabilized synchronous pull-in can be carried out by suppressing generation of counter torque during a starting operation. Starting operation is performed while the energizing range of motor current is suppressed such that the energizing direction of motor current waveform lagging in a phase behind the output waveform from a detection sensor (17) is switched at at least the zero cross point of the output waveform from the sensor when the number of revolutions of a permanent magnet rotor (1) reaches a predetermined number of revolutions in the vicinity of the synchronous number of revolutions.
    Type: Grant
    Filed: September 27, 2007
    Date of Patent: May 24, 2011
    Assignees: Yugen Kaisha K. R & D, Yugen Kaisha Dijianet
    Inventors: Fumito Komatsu, Hideaki Osada, Akira Tooyama, Makoto Murakami
  • Publication number: 20100026231
    Abstract: An inexpensive, productivity-enhanced single-phase AC synchronous motor in which stabilized synchronous pull-in can be carried out by suppressing generation of counter torque during a starting operation. Starting operation is performed while the energizing range of motor current is suppressed such that the energizing direction of motor current waveform lagging in a phase behind the output waveform from a detection sensor (17) is switched at at least the zero cross point of the output waveform from the sensor when the number of revolutions of a permanent magnet rotor (1) reaches a predetermined number of revolutions in the vicinity of the synchronous number of revolutions.
    Type: Application
    Filed: September 27, 2007
    Publication date: February 4, 2010
    Inventors: Fumito Komatsu, Hideaki Osada, Akira Tooyama, Makoto Murakami
  • Publication number: 20090155066
    Abstract: A pump driving apparatus that can suppress backflow of a liquid in a pump chamber and improve pump efficiency is provided. A guide tube 23 is provided coaxially with an output shaft 4 of a motor M inside a pump chamber 8, and the ends in the axial direction of the guide tube 23 are fitted into and make sliding contact with a case inner wall surface that forms the pump chamber 8 and a shaft core-side inner wall surface 25 of an impeller 9 enclosed inside the pump chamber 8.
    Type: Application
    Filed: August 29, 2006
    Publication date: June 18, 2009
    Inventor: Fumito Komatsu
  • Publication number: 20060238059
    Abstract: There is provided a synchronous motor where the winding density of coiled wires wound around a stator core via a bobbin is improved. A stator core 26 is assembled so as to be dividable on both sides in the axial direction of a bobbin 29 around which a coiled wire 28 is wound.
    Type: Application
    Filed: August 19, 2003
    Publication date: October 26, 2006
    Inventor: Fumito Komatsu
  • Patent number: 7102265
    Abstract: The four-pole synchronous motor comprises a stator core having first magnetic pole cores formed at both ends of a connection body part of crisscrossed connection body parts and second magnetic pole cores formed at both ends of the connection body part. The first magnetic pole cores include magnetic flux acting surface parts extended toward both sides thereof in a circumferential direction. A shape of each magnetic flux acting surface part on one side of a longitudinal centerline of the first magnetic pole cores is different from that on the other side so as to be magnetically asymmetrical with respect to the longitudinal centerline.
    Type: Grant
    Filed: June 2, 2003
    Date of Patent: September 5, 2006
    Inventors: Katsuyuki Totsu, Fumito Komatsu
  • Publication number: 20060033400
    Abstract: The four-pole synchronous motor comprises a stator core (23) having first magnetic pole cores (36) formed at both ends of a connection body part (24) of crisscrossed connection body parts (24, 25) and second magnetic pole cores (39) formed at both ends of the connection body part (25). The first magnetic pole cores (36) include magnetic flux acting surface parts (37) extended toward both sides thereof in a circumferential direction. A shape of each magnetic flux acting surface part (37) on one side of a longitudinal centerline (M) of the first magnetic pole cores (36) is different from that on the other side so as to be magnetically asymmetrical with respect to the longitudinal centerline (M).
    Type: Application
    Filed: June 2, 2003
    Publication date: February 16, 2006
    Inventors: Katsuyuki Totsu, Fumito Komatsu
  • Patent number: 6814830
    Abstract: A hot-stamping foil tape cassette comprises a hot-stamping foil tape transferred by pressure application together with a value-added medium to the value-added medium and a windup reel for winding up the hot-stamping foil tape. The reel on which the hot-stamping foil tape is wound is stored in a cassette case. A shutter is included which at the time of hot-stamping transfer is in a protective position that protects the hot-stamping foil tape. The shutter at the time of hot-stamping transfer withdraws to a withdrawal position that does not interfere with action of the hot-stamping transfer. After hot-stamping, by the shutter, the hot-stamping foil tape can be peeled from the value-added medium. A foil-peeling mechanism for a hot-stamping device, a peeling method for a hot-stamping foil and a control method for a hot-stamping foil tape cassette are also disclosed.
    Type: Grant
    Filed: October 25, 2001
    Date of Patent: November 9, 2004
    Assignee: Sankyo Seiki Mfg. Co., Ltd.
    Inventors: Mitsuo Yokozawa, Kiyotsugu Takasawa, Yukio Kuroiwa, Fumito Komatsu
  • Publication number: 20040154723
    Abstract: A hot-stamping foil tape cassette comprises a hot-stamping foil tape transferred by pressure application together with a value-added medium to the value-added medium and a windup reel for winding up the hot-stamping foil tape. The reel on which the hot-stamping foil tape is wound is stored in a cassette case. A shutter is included which at the time of hot-stamping transfer is in a protective position that protects the hot-stamping foil tape. The shutter at the time of hot-stamping transfer withdraws to a withdrawal position that does not interfere with action of the hot-stamping transfer. After hot-stamping, by the shutter, the hot-stamping foil tape can be peeled from the value-added medium. A foil-peeling mechanism for a hot-stamping device, a peeling method for a hot-stamping foil and a control method for a hot-stamping foil tape cassette are also disclosed.
    Type: Application
    Filed: February 4, 2004
    Publication date: August 12, 2004
    Inventors: Mitsuo Yokozawa, Kiyotsugu Takasawa, Yukio Kuroiwa, Fumito Komatsu
  • Patent number: 6692237
    Abstract: A rotary cylinder apparatus which prevents a fluid from leaking from a contact portion of a piston and a cylinder member and consequently enables efficient rotation. The rotary cylinder apparatus comprises: a rotary cylinder member 2 which has cylinder chambers 22 and 23 formed thereto so as to pass through a rotary shaft center O and rotates around the rotary shaft center O; pistons 3 and 4 demonstrating reciprocating linear motion in the cylinder chambers 22 and 23; a piston holding member 5 which holds the pistons 3 and 4 and rotates around a rotation center X eccentric from the rotary shaft center O of the rotary cylinder member 2; and a casing 6 which rotatably supports the rotary cylinder member 2 and has at least one inlet 61 and at least one outlet 62, wherein the pistons 3 and 4 are rotatably supported at a position away from the rotation center X of the piston holding member 5 by a fixed distance and with that position at the center thereof.
    Type: Grant
    Filed: December 11, 2001
    Date of Patent: February 17, 2004
    Assignee: Kabushiki Kaisha Sankyo Seiki Seisakusho
    Inventors: Fumito Komatsu, Kenji Muramatsu, Yuki Nakamura, Tomohiro Takeuchi
  • Patent number: 6672357
    Abstract: This invention relates to a hot-stamping device comprising a stamping arm with one end being a free end, a stamping section adapted to apply pressure to a hot-stamping foil positioned at the free end to a value-added medium such as ticket wherein the hot-stamping foil is transferred to the value-added medium. A first cam, in contact with said stamping arm, is used for moving a stamping section to close proximity of the value-added medium. A first drive section driving said first cam and a second cam for bringing pressure-exerting load to bear on the stamping section is used to move to close proximity a value-added medium. A second drive section is used for driving a second cam.
    Type: Grant
    Filed: October 24, 2001
    Date of Patent: January 6, 2004
    Assignee: Sankyo Seiki Mfg. Co., Ltd.
    Inventors: Mitsuo Yokozawa, Kiyotsugu Takasawa, Yukio Kuroiwa, Fumito Komatsu
  • Patent number: 6601792
    Abstract: A winding device is disclosed comprising a winding mechanism for winding a thin medium, such as paper, film and cloth and the like, output by a printer on a winding core. A looseness-detecting sensor is provided for detecting looseness of the medium and for actuating the winding mechanism upon detection. When a sheet tray is attached to the printer, the looseness-detecting sensor is capable of receding from the moving area of the medium.
    Type: Grant
    Filed: April 6, 2001
    Date of Patent: August 5, 2003
    Assignees: Sankyo Seiki Mfg. Co., Ltd., Canon Kabushiki Kaisha
    Inventors: Fumito Komatsu, Noboru Ueno, Kiyotsugu Takasawa