Patents by Inventor Kohji Tsukahara

Kohji Tsukahara 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: 9604344
    Abstract: A dry cleaning casing of a dry cleaning apparatus includes a casing body including an internal space for flying a cleaning member, an opening to which a cleaning target is contacted to collide the cleaning member to the cleaning target, and an air introduction route to introduce external air to the internal space, by sucking air from the internal space while the opening is closed by the cleaning target, to generate rotating air flow for flying the cleaning member; a flow restriction member to define a rotation axis of the rotating air flow in the internal space; and a screen plate made of a porous plate to block movement of the cleaning member while passing through substance removed from the cleaning target.
    Type: Grant
    Filed: September 29, 2014
    Date of Patent: March 28, 2017
    Assignee: Ricoh Company, Ltd.
    Inventors: Yuusuke Taneda, Akihiro Fuchigami, Yoichi Okamoto, Shozo Murata, Kohji Tsukahara
  • Patent number: 9597716
    Abstract: A dry-type cleaning chassis for cleaning a cleaning target by colliding the cleaning media with the cleaning target, the cleaning media being blown by an air flow includes an internal space where the cleaning media are to fly; an opening part being in contact with the cleaning target so that the cleaning media collide with the cleaning target; an air inlet duct introducing external air into the internal space; a suction port generating a first air flow caused by a circulating air flow in the internal space by suctioning the introduced external air; an injection port generating at least a second air flow increasing a speed of the cleaning media flown by the circulating air flow; and a porous unit passing objects removed from the cleaning target to a suction port side.
    Type: Grant
    Filed: February 15, 2012
    Date of Patent: March 21, 2017
    Assignee: RICOH COMPANY, LTD.
    Inventors: Akihiro Fuchigami, Yoichi Okamoto, Kohji Tsukahara, Shozo Murata, Yusuke Taneda
  • Publication number: 20160327315
    Abstract: A heat exchanger includes a plurality of plate fins including a plurality of flow channels in which a heat medium flows; a plurality of corrugated fins, the plurality of plate fins and the plurality of corrugated fins being arranged alternately; and a reaction portion solidified by crystallization of reaction material slurry filling gaps between the plurality of plate fins and the plurality of the corrugated fins, the reaction material slurry including a reaction material that reversibly reacts with a reaction medium in an exothermic manner and in an endothermic manner to exchange heat with the heat medium.
    Type: Application
    Filed: April 28, 2016
    Publication date: November 10, 2016
    Applicant: Ricoh Company, Ltd.
    Inventors: Masahiro MASUZAWA, Yasutomo AMAN, Yohei SHIREN, Hiroko OHKURA, Tomiko TAKAHASHI, Yoshifumi OHBA, Kohji TSUKAHARA
  • Publication number: 20160290685
    Abstract: A heat storage and release unit includes a reactant formed body for reacting with a reaction medium to store and release heat; a reaction vessel for accommodating the reactant formed body and exchanging heat with the reactant formed body; a reaction medium flow path structure, connected to the reaction vessel, for supplying the reaction medium to the reaction vessel or discharging the reaction medium from the reaction vessel. The reactant formed body includes a plate-like heat transfer plate that contacts the reaction vessel, heat transfer elements extending from a surface of the heat transfer plate at substantially right angles, and a reactant formed unit that encloses the heat transfer elements in such a way that the heat transfer elements are partially exposed from the reactant formed unit, and the reaction vessel can change form by a pressure difference between the outside and the inside of the reaction vessel.
    Type: Application
    Filed: March 24, 2016
    Publication date: October 6, 2016
    Inventors: Yasutomo AMAN, Yohei SHIREN, Masahiro MASUZAWA, Hiroko OHKURA, Tomiko TAKAHASHI, Yoshifumi OHBA, Kohji TSUKAHARA, Kenichi HAYAKAWA
  • Patent number: 9452454
    Abstract: A dry type cleaning housing which causes a cleaning medium to fly with an air flow and places the cleaning medium on a cleaning object to clean the cleaning object is disclosed. The dry type cleaning housing includes an inner space which causes the cleaning medium to fly; an opening which abuts the cleaning medium against the cleaning object to collide the cleaning medium with the cleaning object; a ventilation path which passes air from outside into the inner space; a suction opening which suctions the air introduced into the inner space via the ventilation path to generate a revolving air flow in the inner space; a porous unit which passes removed matter removed from the cleaning object to the suction opening side; and a revolving air flow adjusting unit which arbitrarily reduces or stops the revolving air flow.
    Type: Grant
    Filed: December 6, 2012
    Date of Patent: September 27, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Yuusuke Taneda, Yoichi Okamoto, Akihiro Fuchigami, Kohji Tsukahara, Shozo Murata
  • Patent number: 9421588
    Abstract: Provided is an anti-cleanser dispersing element for use in a dry washing device which disperses cleanser by an air stream to allow the cleanser to collide with an object for washing. The anti-cleanser dispersing element is disposed on a side of a holder of the object opposite to a side with which the cleanser collides. The anti-cleanser dispersing element is configured to be deformed by its own weight or pressure in accordance with an outer shape of the object, to tightly attach to the object with no gap and prevent the cleanser from moving to the opposite side of the holder.
    Type: Grant
    Filed: October 25, 2012
    Date of Patent: August 23, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Akihiro Fuchigami, Yoichi Okamoto, Yuusuke Taneda, Kohji Tsukahara, Shozo Murata
  • Patent number: 9358589
    Abstract: A dry type cleaning case is for cleaning an object with a medium that flies by a revolving airflow. The dry type cleaning case includes a case unit and a leakage prevention unit. The case unit includes a space in which the medium flies, an opening that contacts the object so that the medium collides with the object, a ventilation path through which air flows into the space from outside, a suction opening that suctions the air that has been guided into the space through the ventilation path, to generate the revolving airflow in the space, and a porous unit through which a substance removed from the object is passed to the suction opening. The leakage prevention unit prevents the medium from leaking outside through the opening from the space, by causing outer air to flow in when the case unit is separated from the object.
    Type: Grant
    Filed: October 26, 2011
    Date of Patent: June 7, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Akihiro Fuchigami, Yoichi Okamoto, Kohji Tsukahara, Yuusuke Taneda, Shozo Murata
  • Publication number: 20150101143
    Abstract: A dry cleaning casing of a dry cleaning apparatus includes a casing body including an internal space for flying a cleaning member, an opening to which a cleaning target is contacted to collide the cleaning member to the cleaning target, and an air introduction route to introduce external air to the internal space, by sucking air from the internal space while the opening is closed by the cleaning target, to generate rotating air flow for flying the cleaning member; a flow restriction member to define a rotation axis of the rotating air flow in the internal space; and a screen plate made of a porous plate to block movement of the cleaning member while passing through substance removed from the cleaning target.
    Type: Application
    Filed: September 29, 2014
    Publication date: April 16, 2015
    Inventors: Yuusuke TANEDA, Akihiro FUCHIGAMI, Yoichi OKAMOTO, Shozo MURATA, Kohji TSUKAHARA
  • Publication number: 20140366307
    Abstract: Disclosed is a dry cleaning device including a first cleaning unit that performs cleaning by generating a rotational air current inside a first housing having a first opening and by colliding cleaning media with a to-be-cleaned object that is attached to the first opening, the first cleaning unit being disposed at a first surface of the to-be-cleaned object; and a second cleaning unit that performs the cleaning by generating a second rotational air current inside a second housing having a second opening and by colliding second cleaning media with the to-be-cleaned object that is attached to the second opening, the second cleaning unit being disposed on a second surface of the to-be-cleaned object, so that the first opening and the second opening are facing each other, wherein the cleaning is performed from the first surface and second surfaces of the to-be-cleaned object.
    Type: Application
    Filed: December 26, 2012
    Publication date: December 18, 2014
    Applicant: RICOH COMPANY, LTD.
    Inventors: Akihiro Fuchigami, Yuusuke Tanesda, Yoichi Okamoto, Shozo Murata, Kohji Tsukahara
  • Patent number: 8713750
    Abstract: A dry-type cleaning chassis includes a chassis part including an opening part in contact with a cleaning target, an air inlet duct provided to blow external air into the internal space; a suction port provided for generating a circulating air flow in the internal space by suctioning air having been introduced into the internal space via the air inlet duct; a porous unit configured to pass objects removed from the cleaning target to a suction port side; and a path limiting member formed of a cylindrical shape extended in an axis center direction of the circulating air flow and configured so that an inside of the cylindrical shape is in communication with the suction port as a suction path.
    Type: Grant
    Filed: October 28, 2011
    Date of Patent: May 6, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Akihiro Fuchigami, Yoichi Okamoto, Kohji Tsukahara, Shozo Murata, Yuusuke Taneda
  • Publication number: 20140020713
    Abstract: A dry-type cleaning chassis includes an internal space in which cleaning media are flown, an opening part configured to be in contact with a cleaning object, an air inlet duct configured to introduce external air into the internal space, a suction port that vacuums the air introduced into the internal space from the air inlet duct and causes a circulating air flow to be generated in the internal space, a flow path limiting member that regulates a circulating axis of the circulating air flow within the internal space, a cleaning media discharge outlet that is in communication with an exterior of a circulating flow path of the circulating air flow and is configured to discharge the cleaning media from the circulating flow path to the exterior, and a cleaning media guide member that guides the cleaning media to the cleaning media discharge outlet.
    Type: Application
    Filed: May 29, 2013
    Publication date: January 23, 2014
    Inventors: Yuusuke TANEDA, Akihiro Fuchigami, Kohji Tsukahara, Kakuji Murakami, Shozo Murata
  • Publication number: 20130326840
    Abstract: A dry-type cleaning chassis for cleaning a cleaning target by colliding the cleaning media with the cleaning target, the cleaning media being blown by an air flow includes an internal space where the cleaning media are to fly; an opening part being in contact with the cleaning target so that the cleaning media collide with the cleaning target; an air inlet duct introducing external air into the internal space; a suction port generating a first air flow caused by a circulating air flow in the internal space by suctioning the introduced external air; an injection port generating at least a second air flow increasing a speed of the cleaning media flown by the circulating air flow; and a porous unit passing objects removed from the cleaning target to a suction port side.
    Type: Application
    Filed: February 15, 2012
    Publication date: December 12, 2013
    Applicant: RICOH COMPANY, LTD.
    Inventors: Akihiro Fuchigami, Yoichi Okamoto, Kohji Tsukahara, Shozo Murata, Yusuke Taneda
  • Patent number: 8607259
    Abstract: A disk laminate includes thin disks laminated to each other, which are to be suctioned and conveyed; and spacers provided between the thin disks to prevent the thin disks from directly contacting each other, the spacers having air permeability.
    Type: Grant
    Filed: May 12, 2011
    Date of Patent: December 10, 2013
    Assignees: Ricoh Company, Ltd., Chotaro Engineering, Co.
    Inventors: Yoshimichi Takano, Nobuaki Onagi, Kohji Tsukahara, Haruki Tokumaru, Daiichi Koide, Takeshi Kajiyama, Masami Nishida
  • Publication number: 20130192018
    Abstract: A dry type cleaning case is for cleaning an object with a medium that flies by a revolving airflow. The dry type cleaning case includes a case unit and a leakage prevention unit. The case unit includes a space in which the medium flies, an opening that contacts the object so that the medium collides with the object, a ventilation path through which air flows into the space from outside, a suction opening that suctions the air that has been guided into the space through the ventilation path, to generate the revolving airflow in the space, and a porous unit through which a substance removed from the object is passed to the suction opening. The leakage prevention unit prevents the medium from leaking outside through the opening from the space, by causing outer air to flow in when the case unit is separated from the object.
    Type: Application
    Filed: October 26, 2011
    Publication date: August 1, 2013
    Applicant: RICOH COMPANY, LTD
    Inventors: Akihiro Fuchigami, Yoichi Okamoto, Kohji Tsukahara, Yuusuke Taneda, Shozo Murata
  • Publication number: 20130180552
    Abstract: A dry type cleaning housing which causes a cleaning medium to fly with an air flow and places the cleaning medium on a cleaning object to clean the cleaning object is disclosed. The dry type cleaning housing includes an inner space which causes the cleaning medium to fly; an opening which abuts the cleaning medium against the cleaning object to collide the cleaning medium with the cleaning object; a ventilation path which passes air from outside into the inner space; a suction opening which suctions the air introduced into the inner space via the ventilation path to generate a revolving air flow in the inner space; a porous unit which passes removed matter removed from the cleaning object to the suction opening side; and a revolving air flow adjusting unit which arbitrarily reduces or stops the revolving air flow.
    Type: Application
    Filed: December 6, 2012
    Publication date: July 18, 2013
    Inventors: Yuusuke Taneda, Yoichi Okamoto, Akihiro Fuchigami, Kohji Tsukahara, Shozo Murata
  • Publication number: 20130118525
    Abstract: A dry cleaning housing causes a cleaning medium to be scattered by an airflow and brings the cleaning medium into contact with a cleaning object to clean the cleaning object. The dry cleaning housing includes an internal space where the cleaning medium is scattered; an opening configured to be brought into contact with the cleaning object to cause the cleaning medium to collide with the cleaning object; a ventilation path configured to supply air from an outside to the internal space; a suction port configured to suction the air introduced into the internal space via the ventilation path to generate a rotating airflow inside the internal space; and a porous unit configured to allow a substance eliminated from the cleaning object to pass through.
    Type: Application
    Filed: July 29, 2011
    Publication date: May 16, 2013
    Inventors: Akihiro Fuchigami, Yoichi Okamoto, Kohji Tsukahara
  • Publication number: 20130104945
    Abstract: Provided is an anti-cleanser dispersing element for use in a dry washing device which disperses cleanser by an air stream to allow the cleanser to collide with an object for washing. The anti-cleanser dispersing element is disposed on a side of a holder of the object opposite to a side with which the cleanser collides. The anti-cleanser dispersing element is configured to be deformed by its own weight or pressure in accordance with an outer shape of the object, to tightly attach to the object with no gap and prevent the cleanser from moving to the opposite side of the holder.
    Type: Application
    Filed: October 25, 2012
    Publication date: May 2, 2013
    Inventors: Akihiro Fuchigami, Yoichi Okamoto, Yuusuke Taneda, Kohji Tsukahara, Shozo Murata
  • Publication number: 20120216363
    Abstract: A dry type cleaning case cleans a cleaning object by causing a cleaning medium to fly by an airflow and contact the cleaning object. The dry type cleaning case includes an internal space in which the cleaning medium is caused to fly; an opening that comes in contact with the cleaning object so that the cleaning medium collides with the cleaning object; a ventilation path through which air from outside is passed to the internal space; a suction opening configured to generate a revolving airflow in the internal space by suctioning the air that is guided into the internal space through the ventilation path; a porous unit configured to pass removed matter that is removed from the cleaning object to a side of the suction opening; and a humidifying unit configured to increase humidity in an area where the cleaning medium flies.
    Type: Application
    Filed: February 17, 2012
    Publication date: August 30, 2012
    Applicant: RICOH COMPANY, LTD.
    Inventors: Yoichi OKAMOTO, Akihiro Fuchigami, Kohji Tsukahara, Shozo Murata, Yusuke Taneda
  • Publication number: 20120117749
    Abstract: A dry-type cleaning chassis includes a chassis part including an opening part in contact with a cleaning target, an air inlet duct provided to blow external air into the internal space; a suction port provided for generating a circulating air flow in the internal space by suctioning air having been introduced into the internal space via the air inlet duct; a porous unit configured to pass objects removed from the cleaning target to a suction port side; and a path limiting member formed of a cylindrical shape extended in an axis center direction of the circulating air flow and configured so that an inside of the cylindrical shape is in communication with the suction port as a suction path.
    Type: Application
    Filed: October 28, 2011
    Publication date: May 17, 2012
    Applicant: RICOH COMPANY, LTD.
    Inventors: Akihiro FUCHIGAMI, Yoichi Okamoto, Kohji Tsukahara, Shozo Murata, Yuusuke Taneda
  • Publication number: 20110283299
    Abstract: A disk laminate includes thin disks laminated to each other, which are to be suctioned and conveyed; and spacers provided between the thin disks to prevent the thin disks from directly contacting each other, the spacers having air permeability.
    Type: Application
    Filed: May 12, 2011
    Publication date: November 17, 2011
    Inventors: Yoshimichi Takano, Nobuaki Onagi, Kohji Tsukahara, Haruki Tokumaru, Daiichi Koide, Takeshi Kajiyama, Masami Nishida