Patents by Inventor Tadao Saito

Tadao Saito 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: 20030080157
    Abstract: A pump for discharging bubbles is provided on a neck portion of a container body. The pump for discharging bubbles comprises a cylinder for liquid in which a first piston slides, a cylinder for air in which a second piston slides, a pump head on which a nozzle is provided and which is connected to the first piston and the second piston so as to drive the both pistons, a vapor-liquid mixing chamber in which liquid delivered from the cylinder for liquid and air delivered from the cylinder for air are joined and a bubbling member provided between the nozzle and the vapor-liquid mixing chamber. Liquid within the container body and outside air are pumped up to be joined in the vapor-liquid mixing chamber and the vapor-liquid is bubbled via the bubbling member to be discharged in a foamy state from the nozzle by depressing the pump head.
    Type: Application
    Filed: October 28, 2002
    Publication date: May 1, 2003
    Applicant: Yoshino Kogyosho Co., Ltd.
    Inventors: Shigeo Iizuka, Hiroshi Mizushima, Haruo Tsuchida, Tadao Saito
  • Patent number: 6535557
    Abstract: In a method for coding a moving picture image, in which the moving picture image is coded into a digital moving picture stream when the moving picture image is transmitted via a network, the moving picture image is coded in such a manner that a data unit including a synchronous signal corresponds or conforms to a data transmission unit on the network, or, the moving picture image is coded in such a manner that a synchronous signal is included in a position near a head of respective data transmission units on the network. Therefore, in the digital moving picture stream generated according to the invention, the header of the synchronous layer is included in every maximum length of the IP packet in the variable length packet switching method and in every size of the time slots in the variable bit rate TDM.
    Type: Grant
    Filed: September 7, 1999
    Date of Patent: March 18, 2003
    Assignee: The University of Tokyo
    Inventors: Tadao Saito, Hitoshi Aida, Terumasa Aoki, Takayuki Ohnishi
  • Patent number: 6480084
    Abstract: An inductance element comprises a coil having a hollow portion opened at both ends and provided with a winding of which number of turns (N) per length 10 mm is 20 or more and 500 or less, and a core having a single layer or a plurality of layers of magnetic ribbon of a thickness of 4 &mgr;m or more and 50 &mgr;m or less and a width of 2 mm or more and 40 mm or less, at least part thereof being disposed in the hollow portion. In such an inductance element, a ratio (N/n) of a number of turns (N) of the coil per length 10 mm to a number of layers (n) of the magnetic ribbon is set at 20 or more and 500 or less. The magnetic ribbon, for instance in a state disposed in the hollow portion of the coil, has an open magnetic circuit structure. Instead, the magnetic ribbon, by disposing penetrating the hollow portion and magnetically connecting both ends thereof, forms a closed magnetic circuit loop. Such an inductance element possesses excellent inductance characteristics and is good in winding efficiency.
    Type: Grant
    Filed: June 29, 2000
    Date of Patent: November 12, 2002
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tadao Saito, Yasuaki Moriya, Kazumi Sakai, Takao Kusaka
  • Publication number: 20020162381
    Abstract: A malfunction detection device of a bellows type accumulator for pressurized fluid includes malfunction judgment unit for judging a malfunction of the bellows type accumulator on the basis of a detection output of the pressure sensor. The malfunction judgment unit judges that the malfunction of the seal member generates when the difference between a peak pressure value appeared before a predetermined time is past after the starting of the pressure increase from a value below a predetermined value in the inlet and outlet port and a stable fluid pressure appeared after the appearance of the peak pressure value is not within a predetermined range and/or when the peak pressure value does not appear before the progress of the predetermined time.
    Type: Application
    Filed: April 9, 2002
    Publication date: November 7, 2002
    Inventors: Kenichi Suzuki, Tetsuya Sato, Tadao Saito, Takashi Kurokawa, Yasunori Sakata
  • Patent number: 6477173
    Abstract: In a system for switching high-capacity and variable length packets from m input ports to n output ports, k Banyan networks are connected into a ring by means of at least n parallel lines, said input ports are connected to inputs of said Banyan networks in a dispersed manner by means of m input modules, misroute tag check parts are connected to outputs of said Banyan networks as well as to inputs of n output modules whose outputs are connected to said output ports. Each of plural unit switches constituting a Banyan network is constructed such that when an input packet cannot be sent to a desired output, the relevant packet is outputted to a non-occupied output of the relevant Banyan network. When the misroute tag check part finds that the misroute tag is set, the relevant packet is sent to a next stage Banyan network, but when the misroute check tag is not set, the relevant packet is outputted to an output module connected to a desired output.
    Type: Grant
    Filed: September 24, 1998
    Date of Patent: November 5, 2002
    Assignee: The University of Tokyo
    Inventors: Tadao Saito, Hitoshi Aida, Terumasa Aoki
  • Publication number: 20020000452
    Abstract: A pump for discharging bubbles is provided on a neck portion of a container body. The pump for discharging bubbles comprises a cylinder for liquid in which a first piston slides, a cylinder for air in which a second piston slides, a pump head on which a nozzle is provided and which is connected to the first piston and the second piston so as to drive-the both pistons, a vapor-liquid mixing chamber in which liquid delivered from the cylinder for liquid and air delivered from the cylinder for air are joined and a bubbling member provided between the nozzle and the vapor-liquid mixing chamber. Liquid within the container body and outside air are pumped up to be Joined in the vapor-liquid mixing chamber and the vapor-liquid is bubbled via the bubbling member to be discharged in a foamy state from the nozzle by depressing the pump head.
    Type: Application
    Filed: July 25, 2001
    Publication date: January 3, 2002
    Applicant: Yoshino Kogyosho Co. Ltd.
    Inventors: Shigeo Iizuka, Hiroshi Mizushima, Haruo Tsuchida, Tadao Saito
  • Patent number: 6299028
    Abstract: A pump for discharging bubbles is provided on a neck portion of a container body. The pump for discharging bubbles comprises a cylinder for liquid in which a first piston slides, a cylinder for air in which a second piston slides, a pump head on which a nozzle is provided and which is connected to the first piston and the second piston so as to drive the both pistons, a vapor-liquid mixing chamber in which liquid delivered from the cylinder for liquid and air delivered from the cylinder for air are joined and a bubbling member provided between the nozzle and the vapor-liquid mixing chamber. Liquid within the container body and outside air are pumped up to be joined in the vapor-liquid mixing chamber and the vapor-liquid is bubbled via the bubbling member to be discharged in a foamy state from the nozzle by depressing the pump head.
    Type: Grant
    Filed: July 27, 2000
    Date of Patent: October 9, 2001
    Assignee: Yoshino Kogyosho Co., Ltd.
    Inventors: Shigeo Iizuka, Hiroshi Mizushima, Haruo Tsuchida, Tadao Saito
  • Patent number: 6270178
    Abstract: A method of instantly measuring the amount of ink discharged from a nozzle of an ink-jet type printhead in a single discharging operation comprises: a density measuring step of measuring the density of an ink dot formed by ink discharged from the printhead onto a glass plate 10, and a determining step of determining the amount of the discharged ink on the basis of the density of the ink dot measured in the measuring step.
    Type: Grant
    Filed: December 9, 1997
    Date of Patent: August 7, 2001
    Assignee: Canon Kabushiki Kaisha
    Inventors: Satoshi Wada, Nobuhito Yamaguchi, Makoto Akahira, Hideto Yokoi, Hiroshi Fujiike, Tadao Saito
  • Patent number: 6158858
    Abstract: The color filter manufacturing method for improving precision in correcting color unevenness of a screen surface by eliminating the influence of measurement errors and variance in the ink discharge amount, includes the steps of: coloring a coloring-target medium, using at least two different ink discharge densities, and measuring color densities of colored portions of the coloring-target medium; obtaining a relationship between the color density and ink discharge density based on the respective color densities of the colored portions colored by the at least two different ink discharge densities and corresponding ink discharge densities; and determining an ink discharge density which attains a desired color density based on the obtained relationship between the color density and ink discharge density, and discharging ink onto the color filter substrate at the determined ink discharge density, thereby coloring the color filter substrate.
    Type: Grant
    Filed: March 12, 1998
    Date of Patent: December 12, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroshi Fujiike, Makoto Akahira, Satoshi Wada, Yoshitomo Marumoto, Tadao Saito
  • Patent number: 6119899
    Abstract: A container with a pump is provided that includes a container body with a neck portion and a pump for discharging bubbles that is provided on the neck portion. The pump includes a cylinder for air and a cylinder for liquid provided in a concentric arrangement. An attaching trunk is provided on the neck portion that holds a flange of the cylinder. A piston head passes through the attaching trunk in a state that allows upward and downward movement. A hollow, cylindrical stem having open ends is received within the cylinder. The upper part of the stem is connected to the piston head and a slidable circular first piston is provided on the lower part of the stem. A second piston is provided on an external surface of the stem and is only capable of slight upward and downward movement. A liquid discharge valve is arranged on the stem and a bubbling member is received between the liquid discharge valve and the nozzle. The pump also includes a vapor-liquid mixing chamber, an air passage and a liquid passage.
    Type: Grant
    Filed: July 22, 1998
    Date of Patent: September 19, 2000
    Assignee: Yoshino Kogyosho Co., Ltd.
    Inventors: Shigeo Iizuka, Hiroshi Mizushima, Haruo Tsuchida, Tadao Saito
  • Patent number: 6003957
    Abstract: The present invention aims to provide a fluid pressure control apparatus which allows the gradient of pressure increase to be adjusted finely without using any accumulator. The fluid pressure control apparatus of the present invention includes a hydraulic pump driven by a drive motor and a wheel brake. A first orifice is provided in a passage portion on the side of an outlet of the hydraulic pump. Another passage portion on the side of an inlet of the hydraulic pump is connected to the passage portion between the first orifice and the hydraulic pump through a return passage. A switching valve and a second orifice are connected in series along the return passage. The pressure increase gradient can be set to a small value by changing the amount of fluid flowing into the wheel brake. This is effected, for example, by changing the ratio of the fluid passage area of the first orifice to that of the second orifice, the operational speed of the hydraulic pump, or the duty ratio of the switching valve.
    Type: Grant
    Filed: August 11, 1997
    Date of Patent: December 21, 1999
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Hiroshi Toda, Hirochika Shibata, Tadao Saito
  • Patent number: 5957549
    Abstract: A hydraulic braking pressure control system for an automotive vehicle having a hydraulic pressure controlling circuit includes a hydraulic pressure generator that supplies hydraulic braking pressure to wheel brake cylinders of the vehicle through a hydraulic pressure controlling circuit, a pressure control device disposed in the hydraulic pressure controlling circuit between the hydraulic pressure generator and the wheel brake cylinders for controlling the hydraulic braking pressure in each of the wheel brake cylinders, and a reservoir disposed in the hydraulic pressure controlling circuit for storing brake fluid. A pump is disposed in the hydraulic pressure controlling circuit to pump brake fluid, and a motor is operatively connected to the pump to apply a driving force to the pump. A voltmeter is electrically connected to the motor to detect the output voltage of the motor and a calculating arrangement is provided to calculate the value of the decrease gradient of the output voltage of the motor.
    Type: Grant
    Filed: April 17, 1997
    Date of Patent: September 28, 1999
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Hiroyuki Nagai, Tadao Saito, Kenji Asano
  • Patent number: 5813576
    Abstract: A pump for discharging bubbles is provided on a neck portion of a container body. The pump for discharging bubbles comprises a cylinder for liquid in which a first piston slides, a cylinder for air in which a second piston slides, a pump head on which a nozzle is provided and which is connected to the first piston and the second piston so as to drive the both pistons, a vapor-liquid mixing chamber in which liquid delivered from the cylinder for liquid and air delivered from the cylinder for air are joined and a bubbling member provided between the nozzle and the vapor-liquid mixing chamber. Liquid within the container body and outside air are pumped up to be joined in the vapor-liquid mixing chamber and the vapor-liquid is bubbled via the bubbling member to be discharged in a foamy state from the nozzle by depressing the pump head.
    Type: Grant
    Filed: July 1, 1996
    Date of Patent: September 29, 1998
    Assignee: Yoshino Kogyosho Co., Ltd.
    Inventors: Shigeo Iizuka, Hiroshi Mizushima, Haruo Tsuchida, Tadao Saito
  • Patent number: 5745353
    Abstract: A snubber circuit is possessed of a saturable inductor made of an amorphous alloy and connected in series to a drive circuit for a switching element. A switching power source is a flyback type self-excitation or separate excitation switching power source having a saturable inductor connected in series between a switching element connected in series to a primary winding of a transformer and a drive circuit for actuating the switching element. The saturable inductor connected in series to the switching element serves the purpose of improving efficiency and curbing noise. The saturable inductor of this invention is adapted for use in the snubber circuit and the switching power source mentioned above and has an exciting current, I.sub.ex, of not more than 3 (A) and an amount of magnetic flux, .PHI. (Wb/m.sup.2), in the range of from 2 to 20% of the product of the operating period, T (sec), multiplied by the circuit voltage (V).
    Type: Grant
    Filed: July 12, 1995
    Date of Patent: April 28, 1998
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Morio Sato, Kenichiro Momose, Tadao Saito, Takao Kusaka
  • Patent number: 5711460
    Abstract: A trigger type liquid discharge device is provided with a valve structure designed to open only when the liquid inside the device shows a proper discharge pressure and arranged upstream relative to the discharge aperture of the nozzle head thereof and also with a flow path arranged in the cylinder of the pump unit of the device for returning any residual pressure in the liquid flow paths of the device after the end of a liquid discharging cycle. With such an arrangement, it can effectively prevent liquid from dripping out of the discharge aperture because of the residual pressure in the liquid flow paths in the initial and/or final stages of the liquid discharging operation.
    Type: Grant
    Filed: June 25, 1996
    Date of Patent: January 27, 1998
    Assignee: Yoshino Kogyosho Co., Ltd.
    Inventors: Tadao Saito, Shigeru Hayakawa
  • Patent number: 5538335
    Abstract: The hydraulic brake system for a vehicle which can perform anti-lock control includes a brake circuit for connecting a master cylinder to wheel brakes, a control valve circuit for decreasing hydraulic brake pressure in the wheel brake by discharging brake fluid from the wheel brake to a reservoir, a plunger pump driven by an electric motor for returning brake fluid from the reservoir to the brake circuit and a slit formed on at least the discharge valve seat or the suction valve seat of the pump unit for evacuating the pump chamber of the plunger pump. The hydraulic brake system can further include a one-way valve which permits communication between the pressure chamber of the pump with the reservoir for evacuation.
    Type: Grant
    Filed: July 28, 1995
    Date of Patent: July 23, 1996
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Tadao Saito, Yasuhito Sekihara, Hiroyuki Hattori, Hirohisa Kuwana, Hiroshi Toda, Ryuji Takagaki
  • Patent number: 5477990
    Abstract: Herein disclosed is a liquid injection container which comprises: a container body 1; a cylinder 10 depending into the container body from a cap-shaped member 3 fitted on the outer face of the mouth/neck portion of the container body; and an actuator 20 having a stem 17 erected through the top wail 4 of the cap-shaped member from a cylindrical piston 16, which is fitted in the cylinder, and a head 18 fitted on the upper end of the stem and having a nozzle opened forward. The actuator is moved up and down with respect to the cylinder for sucking a liquid in the container body into the cylinder and discharging the liquid in the cylinder out of the nozzle 19 through the stem. A finger knob 80 attached to the top face of the head for receiving a finger. The vertical movements of the actuator are accomplished by the tip of the finger inserted into the finger knob. The actuations of the actuator are facilitated through use of auxiliary walls 6 and 6 acting as a finger knob and guiding the head.
    Type: Grant
    Filed: December 1, 1994
    Date of Patent: December 26, 1995
    Assignee: Yoshino Kogyosho Co., Ltd.
    Inventors: Tadao Saito, Takamitsu Nozawa, Kazunori Hashimoto
  • Patent number: 5476196
    Abstract: Herein disclosed is a liquid injection container which comprises: a container body 1; a cylinder 10 depending into the container body from a cap-shaped member 3 fitted on the outer face of the mouth/neck portion of the container body; and an actuator 20 having a stem 17 erected through the top wall 4 of the cap-shaped member from a cylindrical piston 16, which is fitted in the cylinder, and a head 18 fitted on the upper end of the stem and having a nozzle opened forward. The actuator is moved up and down with respect to the cylinder for sucking a liquid in the container body into the cylinder and discharging the liquid in the cylinder out of the nozzle 19 through the stem. A finger knob 30 attached to the top face of the head for receiving a finger. The vertical movements of the actuator are accomplished by the tip of the finger inserted into the finger knob. The actuations of the actuator are facilitated through use of auxiliary walls 6 and 6 acting as a finger knob and guiding the head.
    Type: Grant
    Filed: April 19, 1995
    Date of Patent: December 19, 1995
    Assignee: Yoshino Kogyosho Co., Ltd.
    Inventors: Tadao Saito, Takamitsu Nozawa, Kazunori Hashimoto
  • Patent number: 5419463
    Abstract: The present invention has its object, the provision of a liquid sprayer capable of spraying a long time and a simple construction with respect to liquid sprayers having a cylinder and a piston. In order to accomplish this object, the liquid sprayer according to the present invention is constructed so as to have a long piston stroke, and has an operating member up- and downwards slidably located on the container body having a cylinder, a stem hung from this operating member and fitted into the cylinder, a trunk-like piston being provided at the lower end of the stem sliding in the cylinder together with the up- and downward movements of the operating member, a spring provided in the interior of the cylinder and energizing said piston and said stem downwards, a depressing spraying head provided on the operating member, and a discharge valve provided in the interior of the operating member and communicating the stem with the depressing spraying head together with the depression of the depressing spraying head.
    Type: Grant
    Filed: October 1, 1991
    Date of Patent: May 30, 1995
    Assignee: Yoshino Kogyosho Co.. Ltd.
    Inventors: Hiroshi Mizushima, Tadao Saito
  • Patent number: D438556
    Type: Grant
    Filed: September 3, 1999
    Date of Patent: March 6, 2001
    Assignee: Laurel Bank Machines Co., Ltd.
    Inventors: Yoshiyuki Kato, Ken Urata, Hideo Atsumi, Keiji Sakai, Tadao Saito