Patents by Inventor Ichiro Nakamura
Ichiro Nakamura 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).
-
Patent number: 5266358Abstract: The disclosure relates to a metal oxide film formed on a glass substrate by a sol-gel method using a solution of at least one metal alkoxide or acetylacetonate. Water which is in the amount ranging from 50 to 400 mol % of the at least one metal alkoxide or acetylacetonate, an organic solvent and a catalyst are added to the solution, thereby to form a first sol. To afford water repellency to the oxide film, a fluoroalkylsilane in the amount more than 0.30 mol % of and less than 3.0 mol % of the at least one metal alkoxide or acetylacetonate, or an alkylsilane compound in the amount more than 4.0 mol % of and less than 20 mol % of the at least one metal alkoxide or acetylacetonate, is added to the first sol, thereby forming a second sol. The concentration of the at least one metal alkoxide or acetylacetonate in the second sol is adjusted to fall within the range from 0.005 to 3.0 mol %. The second sol is applied to the glass substrate to form a gel film.Type: GrantFiled: June 2, 1992Date of Patent: November 30, 1993Assignee: Nissan Motor Company, Ltd.Inventors: Ryuzo Uemura, Toshikazu Nishide, Ichiro Nakamura
-
Patent number: 5251356Abstract: A device for cleaning pipe passages of medical devices comprises a brush having an elongated rod portion and a brush portion, a mechanism for holding and rotating the brush, a mechanism for reciprocating the brush in the pipe passage along the longitudinal axis of the brush, and a unit for controlling the rotation of the brush as well as the reciprocation of the brush in the longitudinal direction thereof.Type: GrantFiled: April 3, 1992Date of Patent: October 12, 1993Assignee: Olympus Optical Co., Ltd.Inventors: Yoshinao Oaki, Hisao Yabe, Hideo Ito, Koji Koda, Akio Ogawa, Daisaku Negoro, Manabu Yajima, Yoshihiro Iida, Ichiro Nakamura, Akira Suzuki
-
Patent number: 5244060Abstract: An elevator apparatus is provided with a hoisting unit including a drive sheave for winding a rope around it. The hoisting unit includes a rotary member. The rope has a car attached at one end thereof for suspending. A braking force is applied to the rotary member by a biasing unit. The braking force against the rotary member is released by a releasing unit, and is reduced by a reducing unit. In emergency stop of such an elevator apparatus, slipping of the rope is not caused to control the braking force with ease.Type: GrantFiled: May 8, 1992Date of Patent: September 14, 1993Assignee: Hitachi, Ltd.Inventors: Masakatsu Tanaka, Masayuki Shigeta, Jun Sugahara, Masanobu Itoh, Ichiro Nakamura
-
Patent number: 5231912Abstract: A bent-axis type variable displacement hydraulic machine provided with one of a hydrostatic radial bearing and a hydrostatic thrust bearing to support hydraulic reaction forces exerted on a cylinder block. The hydraulic machine is adapted to draw out a high oil pressure corresponding to a tilt angle of the cylinder block through a variable throttle means or through a control valve, and to supply the pressure of the hydrostatic radial or thrust bearing to thereby impart a hydrostatic supporting capacity commensurate with a tilt angle of the cylinder block and stably support a rotational shaft while minimizing oil leaks.Type: GrantFiled: October 30, 1992Date of Patent: August 3, 1993Assignee: Hitachi Construction Machinery Co., Ltd.Inventors: Yoshimichi Akasaka, Ichiro Nakamura, Yasuharu Gotoh
-
Patent number: 5214622Abstract: An information display apparatus which accumulates arbitrary information inputted to a television receiver from the outside, superimposes the information in a memory on an ordinary video signal and displays the superimposed image on a television display in accordance with a calender timer built in the television receiver. A remote control unit is provided for inputting information to the information display apparatus from the outside. Memories are disposed in the information display apparatus and the remote control unit for accumulating arbitrary information. A calender timer is provided for serving as a reference for displaying information are also disclosed. Arbitrary information inputted from the outside can be displayed on a television display at a previously appointed date.Type: GrantFiled: April 26, 1991Date of Patent: May 25, 1993Assignee: Hitachi, Ltd.Inventors: Yasuhiro Nemoto, Kazuo Sakai, Masataka Kawauchi, Hideki Tanaka, Kihachiro Tanaka, Hiroshi Ohki, Ichiro Nakamura, Hideo Enoki
-
Patent number: 5182978Abstract: Described is a bent axis type variable displacement hydraulic machine which is provided with a hydrostatic radial bearing 23 and/or a hydrostatic thrust bearing 28 to support hydraulic reaction forces exerted on a cylinder block 8. The hydraulic machine is arranged to draw out a high oil pressure corresponding to the tilt angle of the cylinder block 8 through a variable throttle means 34, 37, 51 or 54 or through a control valve 77 or 78, and to supply the pressure to the hydrostatic radial or thrust bearing 23 or 28 thereby imparting to a hydrostatic supporting capacity commensurate with the tilt angle of the cylinder block 8 to support a rotational shaft stably while holding oil leaks to a minimum.Type: GrantFiled: January 30, 1990Date of Patent: February 2, 1993Assignee: Hitachi Construction Machinery Co., Ltd.Inventors: Yoshimichi Akasaka, Ichiro Nakamura, Yasuharu Gotoh
-
Patent number: 5147305Abstract: A medical instrument whose distal end is inserted into a body cavity of a subject in cooperation with a treating unit, comprises an insertion section including a distal end inserted into the body cavity and having a first opening exposed there, a proximal base end located outside the body of the subject, and a channel provided in the insertion section and extending from the proximal base end toward the first opening, an operation section connected to the proximal base end and having a second opening leading to the channel, a mount piece provided around the second opening. A valve is provided on the mount piece including a body having a slit adapted to be opened when the treating unit is inserted into the channel and closed when it is withdrawn from the channel and an annular groove detachably fitted on the mount piece, and a thin-walled portion for destroying the valve when the valve is removed from the mount piece.Type: GrantFiled: October 3, 1991Date of Patent: September 15, 1992Assignee: Olympus Optical Co., Ltd.Inventors: Ichiro Nakamura, Hideki Tujiya
-
Patent number: 5104379Abstract: A medical instrument whose distal end is inserted into a body cavity of a subject in cooperation with a treating unit, comprises an insertion section including a distal end inserted into the body cavity and having a first opening exposed there, a proximal base end located outside the body of the subject, and a channel provided in the insertion section and extending from the proximal base end toward the first opening, an operation section connected to the proximal base end and having a second opening leading to the channel, a mount piece provided around the second opening. A valve is provided on the mount piece including a body having a slit adapted to be opened when the treating unit is inserted into the channel and closed when it is withdrawn from the channel and an annular groove detachably fitted on the mount piece, and a thin-walled portion for destroying the valve when the valve is removed from the mount piece.Type: GrantFiled: March 28, 1990Date of Patent: April 14, 1992Assignee: Olympus Optical Co., Ltd.Inventors: Ichiro Nakamura, Hideki Tujiya
-
Patent number: 5094144Abstract: A bent axis type variable displacement hydraulic machine employing hydrostatic radial bearings for supporting hydraulic reaction forces exerted on the cylinder block. In a hydraulic machine of this sort, the number of pistons which are located in the high pressure are varies with the rotation of the cylinder block, and the resultant force of hydraulic reaction forces has an acting point at a position off the axis of the rotational shaft. Therefore, the hydrostatic radial bearings are located in such positions as to balance the moment loads which occur about the rotational shaft in relation with the acting point of the resultant force of radial hydraulic reaction forces on the drive disc of the rotational shaft. As a result, it becomes possible to lead to suppression of oil leaks from the sliding surfaces to a minimal rate and to prevent abnormal abrasive wear of each of the sliding surfaces.Type: GrantFiled: July 16, 1990Date of Patent: March 10, 1992Inventors: Yoshimichi Akasaka, Ichiro Nakamura, Yasuharu Gotoh
-
Patent number: 5047086Abstract: A cement composition for extrusion which is produced by incorporating, into cement mortar, 3 to 15 weight % of crushed pulp fiber, 0.2 to 1 weight % of at least one member selected from an alkylcellulose and a hydroxyalkylalkyllcellulose, and a 2% water solution having a viscosity of 80,000 cps or more allows for reduced production costs by reducing the loads of the binder material using a pulp fiber without carcinogenicitic asbestos fiber. Furthermore, it allows for excellent extrudability and provides the moldings with workability such as nailing and sawing.Type: GrantFiled: April 28, 1989Date of Patent: September 10, 1991Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Kazuhisa Hayakawa, Tohru Chiba, Shin-Ichiro Nakamura
-
Patent number: 5040569Abstract: A direct-operated servo valve which exhibits stable damping characteristics. The servo valve is characterized in that a viscous fluid is charged in the gap between a stator and a movable element. The velocity of a valve member is detected and a feed back the velocity signal is obtained by this detection so as to enable a damping of the motion of the valve member.Type: GrantFiled: February 13, 1990Date of Patent: August 20, 1991Assignee: Hitachi, Ltd.Inventors: Tadahiko Nogami, Ichiro Nakamura, Ichiro Maeno
-
Patent number: 5018501Abstract: A plate valve type electromagnetic fuel injection valve according to the present invention is directed to achieving excellent atomization of fuel. The electromagnetic fuel injection valve is characterized by the provision of a fuel rotating element for causing fuel to flow in a circle. In this way, the fuel is made to flow in a circle, and this accelerates atomization of the fuel.Type: GrantFiled: December 28, 1989Date of Patent: May 28, 1991Assignee: Hitachi, Ltd.Inventors: Haruo Watanabe, Ichiro Nakamura, Yoshio Okamoto, Hitoshi Konno
-
Patent number: 5014748Abstract: A rotary valve has a valve body having at least one cylindrical hole, and casings provided with sleeves/plugs having an outer diameter substantially equal to an inner diameter of the cylindrical hole. The sleeves/plugs are provided in coaxial relation with the cylindrical hole. A flow of fluid is controlled by the relative motion between the valve body and the casings. The rotary valve may be provided with a high response time even by a small drive force.Type: GrantFiled: January 18, 1989Date of Patent: May 14, 1991Assignee: Hitachi, Ltd.Inventors: Tadahiko Nogami, Ichiro Nakamura, Ichiro Maeno, Ryohei Kinose
-
Patent number: 4920413Abstract: A blood-vessel endoscope system has an endoscope to be inserted into a blood vessel in a living body and a frozen-picture memorizing device connected to the endoscope, and is capable of storing a frozen picture when a release switch is actuated. The system is provided with a frozen-picture memorization controlling device so that a frozen picture free from a large blur may be stored in synchronization with the signal output from a heart pulsation measuring device for measuring the heart pulsation of the living body and at the timing that the action of a myocardium is reduced.Type: GrantFiled: February 28, 1989Date of Patent: April 24, 1990Assignee: Olympus Optical Co., Ltd.Inventors: Ichiro Nakamura, Naruto Shinkai, David Barlow, Akio Nakada
-
Patent number: 4909279Abstract: In a fluid control valve, a check valve is provided between the pump port and the first fluid chamber and allows the fluid to pass therethrough only in a direction from the pump port to the first fluid chamber, a down control valve is provided between the first fluid chamber and the second fluid chamber, an up control valve is provided between the first fluid chamber and the third fluid chamber, the fluid is allowed to flow from the pump port to the cylinder port through the check valve and through the down control valve when they are opened, and the fluid from the cylinder port to the tank port is allowed to flow through the down control valve, through the first fluid chamber and through the up control valve when they are opened. The fluid control valve can be obtained simple in structure and high in precision, and be allowed a reduction in cavitation and noise.Type: GrantFiled: July 10, 1989Date of Patent: March 20, 1990Assignee: Hitachi, Ltd.Inventors: Ichiro Nakamura, Katsuharu Shuto, Eiichi Sasaki
-
Patent number: 4830146Abstract: A fluid-pressure elevator comprising an elevator frame for supporting a cage; a fluid pressure cylinder attached to the elevator frame and adapted to vertically move the cage by controlling the rate of charge or discharge of pressure fluid; a rope means for connecting the cage and the plunger of the fluid pressure cylinder to each other while being supported by pulleys attached to upper portions of the elevator frame.Type: GrantFiled: October 22, 1987Date of Patent: May 16, 1989Assignee: Hitachi, Ltd.Inventors: Ichiro Nakamura, Toshihiko Nara
-
Patent number: 4809679Abstract: A forceps plug for endoscopes comprises energizing means for partly pressing only the center on an outer peripheral portion of an elastic plug body which portion corresponds to a slit provided in the latter and is in a direction substantially perpendicular to the slit, in a direction to close the slit and for extending the slit in it longitudinal direction.Type: GrantFiled: October 13, 1987Date of Patent: March 7, 1989Assignee: Olympus Optical Co., Ltd.Inventors: Kideki Shimonaka, Ichiro Nakamura
-
Patent number: 4788902Abstract: A thrust hydrostatic bearing device for use in an axial piston machine includes a bearing sleeve fitted into a housing cover for rotatably supporting a drive shaft through a bearing and having a plurality of hydrostatic pads. The hydrostatic pads are disposed at locations which are symmetrical with respect to an axis lying in a cross-section taken perpendicular to the drive shaft, and these pads increase the performance and durability of the thrust hydrostatic bearing device for use in an axial piston machine.Type: GrantFiled: August 24, 1987Date of Patent: December 6, 1988Assignees: Hitachi Ltd., Hitachi Construction MachineryInventors: Yoshimichi Akasaka, Ichiro Nakamura, Ken Ichiryu, Eiji Kometani, Yasuharu Gotoh
-
Patent number: 4775031Abstract: A hydraulic elevator, wherein actual speed characteristics are detected so that they can be used together with desired speed characteristics in such a manner that the speed control accuracy of the car itself is improved.Type: GrantFiled: June 18, 1987Date of Patent: October 4, 1988Assignee: Hitachi, Ltd.Inventors: Ichiro Nakamura, Satoshi Kobayashi, Toshihiko Nara
-
Patent number: RE33171Abstract: Disclosed is a hydraulic elevator in which the load and/or the oil temperature are detected under the running condition of a cage of the hydraulic elevator and a proper value of the deceleration delay time corresponding to this running condition is obtained to thereby control the flow of pressure-oil on the basis of the proper value of the deceleration delay time. Various values of the deceleration delay time are stored in advance in the form of table with respect to various values of load and oil temperature.Type: GrantFiled: August 12, 1987Date of Patent: February 27, 1990Assignee: Hitachi, Ltd.Inventors: Tsuyoshi Ogasawara, Ken Ichiryu, Ichiro Nakamura, Yasuo Kido