Patents by Inventor Hisami Tanaka

Hisami Tanaka 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: 20210010226
    Abstract: A work machine capable of assisting in an operator's operation to allow a work tool move along a design surface indicating a target shape of an object to be worked irrespectively of an angle of the design surface and a posture of a work implement is provided. A controller determines an excavation actuator in charge of an excavation action and determines an alignment actuator in charge of an alignment action for a work tool out of a plurality of actuators on the basis of the design surface set by a work execution target setting device and the posture of the work implement measured by a work implement posture/position measurement device, determines a target velocity of the excavation actuator on the basis of operation signals outputted from an operation device, and limits a target velocity of the alignment actuator in a direction in which the work tool approaches the design surface.
    Type: Application
    Filed: June 13, 2019
    Publication date: January 14, 2021
    Inventors: Hiroaki TANAKA, Hisami NAKANO, Yuusuke SUZUKI, Hiroshi SAKAMOTO
  • Publication number: 20200277751
    Abstract: Target speeds of an arm cylinder and a boom cylinder are computed in response to a distance D between a bucket tip end and a target surface in such a manner that an operating range of a work device is limited on and above the target surface at a time of operating an operation device. A second flow control valve that supplies a hydraulic operating fluid from a second hydraulic pump to the boom cylinder is controlled on the basis of the target speed of the boom cylinder while a first flow control valve that supplies a hydraulic operating fluid from a first hydraulic pump to the arm cylinder and a third flow control valve that supplies the hydraulic operating fluid from the second hydraulic pump to the arm cylinder are controlled on the basis of the target speed of the arm cylinder.
    Type: Application
    Filed: March 15, 2018
    Publication date: September 3, 2020
    Inventors: Takaaki CHIBA, Hiroaki TANAKA, Hisami NAKANO, Hiroshi SAKAMOTO, Yusuke SUZUKI
  • Publication number: 20200232186
    Abstract: A controller (25) of the hydraulic excavator (1) includes a signal separation section (150) that separates each of target speed signals for a plurality of front members (8, 9, 10) into a low frequency component and a high frequency component, a high fluctuation target speed calculation section (143) that allocates the separated high frequency components preferentially to a front member having a relatively small inertial load to calculate high fluctuation target speeds individually for the plurality of front members, a high fluctuation target actuator speed calculation section (141c) that calculates high fluctuation target speeds individually for the plurality of actuators from the high fluctuation target speeds for the plurality of front members, a low fluctuation target actuator speed calculation section (141b) that calculates low fluctuation target speeds individually for the plurality of actuators from the low frequency components separated by the signal separation section, and an actuator controller (200)
    Type: Application
    Filed: March 22, 2018
    Publication date: July 23, 2020
    Inventors: Hisami NAKANO, Hiroaki TANAKA, Yusuke SUZUKI
  • Publication number: 20200224384
    Abstract: It is determined whether a velocity estimation model is established from an actual operating velocity Vr and a target operating velocity Vt of each of actuators 20A, 21A, and 22A; in a case in which the velocity estimation model is established, a dynamic center-of-gravity position of a hydraulic excavator 1 in a case in which each of the actuators 20A, 21A, and 22A is suddenly stopped from a driven state is predicted from an estimated operating velocity Ve; in a case in which the velocity estimation model is not established, the dynamic center-of-gravity position is predicted from the actual operating velocity Vr and it is determined whether to execute control intervention using the predicted dynamic center-of-gravity position; and in a case in which it is determined to execute the control intervention, the target operating velocity Vt is corrected in such a manner that each of the actuators 20A, 21A, and 22A slowly decelerate.
    Type: Application
    Filed: March 28, 2018
    Publication date: July 16, 2020
    Inventors: Yusuke SUZUKI, Hiroaki TANAKA, Hisami NAKANO
  • Publication number: 20200217050
    Abstract: An hydraulic excavator calculates an estimated excavation volume Va defined by a bucket claw tip position (first position) at an excavation start, a bucket claw tip position (second position) at an excavation end set in advance, a current landform, a first target surface, and a bucket width w. A second target surface is generated at a position superior to the first target surface when the estimated excavation volume Va exceeds a limit volume Vb; and the second target surface is generated at a position at which the excavation volume defined by the first position, the second position, the current landform, the second target surface, and the bucket width is closer to the limit volume Vb. The hydraulic actuators are controlled such that an operating range of a work implement is limited on the second target surface and to an area superior to the second target surface.
    Type: Application
    Filed: September 6, 2017
    Publication date: July 9, 2020
    Inventors: Takaaki CHIBA, Hisami NAKANO, Hiroaki TANAKA, Manabu EDAMURA
  • Publication number: 20200181870
    Abstract: Provided is a work machine with which an operator can easily perform semi-automatic excavating shaping work at an intended excavation velocity.
    Type: Application
    Filed: November 16, 2018
    Publication date: June 11, 2020
    Inventors: Hisami NAKANO, Hiroaki TANAKA, Takaaki CHIBA, Hidekazu MORIKI
  • Publication number: 20190390436
    Abstract: Provided is a work machine equipped with a semi-automatic control for assisting operator's operation in works to excavate the ground to form a surface as designed, which work machine can assist operator's operation in compaction works to compact the ground to form a surface as designed. In a work machine 100 including a controller 25 having a semi-automatic control section 31 that corrects an operation amount indicated by an instruction given by operation devices 15L and 15R, the controller includes: a compaction determining section 52 that determines whether or not a work tool 7 is being pressed against a ground; and an actuator control correcting section 54 that further corrects an operation amount having been corrected by the semi-automatic control section, such that a force that the work tool applies to the ground increases if the work tool is determined by the compaction determining section as being pressed against the ground.
    Type: Application
    Filed: April 25, 2018
    Publication date: December 26, 2019
    Inventors: Hiroaki TANAKA, Hisami NAKANO, Takaaki CHIBA, Yuusuke SUZUKI, Hiroshi SAKAMOTO
  • Patent number: 5707726
    Abstract: A process for producing an aluminum pipe is disclosed which has the steps of cutting the aluminum pipe on its periphery, and thereafter carrying out rotary pressure rolling. Also, an electrophotographic photosensitive member, a device unit, an electrophotographic apparatus and a developing roll having the aluminum pipe are disclosed.
    Type: Grant
    Filed: June 12, 1996
    Date of Patent: January 13, 1998
    Assignee: Canon Kabushiki Kaisha
    Inventors: Mutsuo Ohtaka, Hisami Tanaka, Shinichi Shibayama, Yosuke Okubo, Tatsu Nakajima
  • Patent number: 5677095
    Abstract: An electrophotographic photosensitive member has an electroconductive support and a photosensitive layer thereon which contains a compound of Formula 3, 5-11, 13 or 14 as follows: ##STR1##
    Type: Grant
    Filed: November 22, 1995
    Date of Patent: October 14, 1997
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshihiro Kikuchi, Akio Maruyama, Noriko Ohtani, Shin Nagahara, Hisami Tanaka, Teigo Sakakibara, Takakazu Tanaka
  • Patent number: 5669047
    Abstract: A charging member for electrophotography comprising a surface layer, wherein the surface layer comprises a resin and an alkali metal salt contained therein.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: September 16, 1997
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masami Okuda, Hisami Tanaka, Junichi Kishi, Hiroyuki Ohmori, Takashi Koyama, Masafumi Hisamura
  • Patent number: 5595848
    Abstract: A process for producing an aluminum pipe is disclosed which has the steps of cutting the aluminum pipe on its periphery, and thereafter carrying out rotary pressure rolling. Also, an electrophotographic photosensitive member, a device unit, an electrophotographic apparatus and a developing roll having the aluminum pipe are disclosed.
    Type: Grant
    Filed: February 15, 1995
    Date of Patent: January 21, 1997
    Assignee: Canon Kabushiki Kaisha
    Inventors: Mutsuo Ohtaka, Hisami Tanaka, Shinichi Shibayama, Yosuke Okubo, Tatsu Nakajima
  • Patent number: 5484673
    Abstract: An electrophotographic photosensitive member of the present invention has a photosensitive lazer containing a compound represented by the formula (1): ##STR1## The electrophotographic photosensitive member has a high sensitivity and can maintain stable and excellent electrophotographic characteristics even when repeatedly used.
    Type: Grant
    Filed: February 23, 1995
    Date of Patent: January 16, 1996
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshihiro Kikuchi, Akio Maruyama, Noriko Ohtani, Shin Nagahara, Hisami Tanaka, Teigo Sakakibara, Takakazu Tanaka
  • Patent number: 5358987
    Abstract: A new polysilane composition usable as an organic semiconductor which contains a specific polysilane compound of 6000 to 200000 in a weight average molecular weight in which all the substitutional groups and end groups being substituted by specific organic groups not containing oxygen atom, said polysilane compound not containing chlorine atom, and an acceptor level forming material or/and a donor level forming material.
    Type: Grant
    Filed: June 12, 1992
    Date of Patent: October 25, 1994
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masahiro Kanai, Hisami Tanaka, Harumi Sakou, Tatuyuki Aoike, Kouichi Matuda, Keishi Saitou, Mituyuki Niwa, Masahumi Sano
  • Patent number: 5354385
    Abstract: A solar cell, comprising a solar cell unit and a protective layer formed on the solar cell unit, wherein the protective layer comprises conductive particles.
    Type: Grant
    Filed: September 29, 1992
    Date of Patent: October 11, 1994
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yuichi Hashimoto, Teigo Sakakibara, Hisami Tanaka
  • Patent number: 5344501
    Abstract: A solar cell, comprising a solar cell unit and a protective layer formed on the solar cell unit, wherein said protective layer comprises a polymer formed by polymerization of a cyclotriphosphazene monomer represented by the following formula (I): ##STR1## wherein R.sub.1 to R.sub.6 independently denote an ethylenically unsaturated polymerizable group. The cyclophosphazene monomer preferably contains R.sub.1 to R.sub.6 which are represented by the formula (I): ##STR2## wherein R.sub.7 denotes an alkylene group, arylene group, alkyl-substituted arylene group, alkylamide group arylamide group or polyoxyalkylene group, and R.sub.8 denotes a hydrogen atom or a methyl group. The polymer obtained from the cyclotriphosphazene monomer is effective for providing a solar cell having high and stable output efficiency, mechanical durability, and good environmental stability.
    Type: Grant
    Filed: March 23, 1993
    Date of Patent: September 6, 1994
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yuichi Hashimoto, Hisami Tanaka
  • Patent number: 5332635
    Abstract: An electrophotographic photosensitive member is disclosed which has an electroconductive support and a photosensitive layer formed thereon. The photosensitive layer contains at least one polycarbonate selected from the group consisting of polycarbonates (1) to (3); and a charge-transportion substance having the structure represented by the formula (4) or (5) and having an oxidation potential of not less than 0.6 eV. Also, an electrophotographic apparatus, device unit and facsimile machine employing the electrophotographic photosensitive member are disclosed.
    Type: Grant
    Filed: October 21, 1992
    Date of Patent: July 26, 1994
    Assignee: Canon Kabushik Kaisha
    Inventor: Hisami Tanaka
  • Patent number: 5236798
    Abstract: An electrophotographic light receiving member comprising a substrate and a light receiving layer having a multi-layered structure disposed on said substrate, said light receiving layer comprising at least a photoconductive layer and a surface layer being stacked in this order from the side of said substrate, said photoconductive layer being formed of a non-single crystal material containing silicon atoms as the matrix and at least one kind of atoms selected from the group consisting of hydrogen atoms and halogen atoms, and said surface layer being formed of a polysilane compound having a weight average molecular weight of 6000 to 200000 and having at least an oxygen-free organic group selected from the group consisting of alkyl group, cycloalkyl group, aryl group and aralkyl group at the terminals.
    Type: Grant
    Filed: September 25, 1990
    Date of Patent: August 17, 1993
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tatsuyuki Aoike, Koichi Matsuda, Keishi Saitoh, Mitsuyuki Niwa, Masafumi Sano, Hisami Tanaka
  • Patent number: 5220181
    Abstract: An improved junction type photovoltaic element, characterized by having an organic semiconductor layer formed of a polysilane compound of 6000 to 200000 in weight average molecular weight which is represented by the following general formula (I): ##STR1## Wherein, R.sub.1 stands for an albyl group of 1 to 2 carbon atoms; R.sub.2 stands for an alkyl group, cycloalkyl group, aryl group or aralkyl group of 3 to 8 carbon atoms; R.sub.3 stands for an alkyl group of 1 to 4 carbon atoms; R.sub.4 stands for an alkyl group of 1 to 4 carbon atoms; A and A' respectively stands for an alkyl group, cycloalkyl group, aryl group or aralkyl group of 4 to 12 carbon atoms wherein the two substituents may be the same or different one from the other; and each of n and m is a mole ratio showing the proportion of the number of respective monomers versus the total of the monomers in the polymer wherein n+m=1, 0<n.ltoreq.1 and 0.ltoreq.m<1.
    Type: Grant
    Filed: January 15, 1992
    Date of Patent: June 15, 1993
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masahiro Kanai, Hisami Tanaka, Harumi Sakou
  • Patent number: 5190837
    Abstract: An image holding member comprises an electroconductive substrate, a resin layer, and an image holding layer. The resin layer is placed between the electroconductive substrate and the image holding layer. The resin layer comprises metal-coated fine resin particles, and a binder resin.
    Type: Grant
    Filed: October 17, 1990
    Date of Patent: March 2, 1993
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kiyoshi Sakai, Hisami Tanaka, Naoto Fujimura, Teigo Sakakibara, Takashi Koyama
  • Patent number: 5159042
    Abstract: There are provided a new polysilane compound having a weight average molecular weight of 6000 to 200,000, having neither chlorine radical nor other radicals resulted from side reaction, and all the Si radicals of which not having any oxygen, and a process for the production thereof.Said polysilane compound can be utilized in the preparation of various electronic devices, medical devices, etc., thus it is a high molecular substance which has a high industrial value in use.There is also provided an electrophotographic photosensitive member having a light receiving layer containing said polysilane compound.
    Type: Grant
    Filed: August 1, 1990
    Date of Patent: October 27, 1992
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hisami Tanaka, Harumi Sakou