Patents by Inventor Tatsuhide Kawahara

Tatsuhide Kawahara 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: 7845391
    Abstract: Sharp bends in a defrost duct extending from a defrost outlet to a windshield, and in a face duct extending from a face outlet to both sides of a front passenger seat, are eliminated and the duct resistance of these ducts is reduced. Moreover collision safety of passengers is improved, and an interior space of a vehicle is expanded forward. In an air-conditioning unit to be positioned to the front of a front seat of a vehicle, an evaporator is positioned below and behind a blower, and a heater core is positioned below and in front of the blower. Preferably the air-conditioning unit is of a crushable structure wherein, in the event of a vehicle collision, a wall of the main cover behind the evaporator is broken, or component parts housed within the main cover are moved, to thereby absorb the impact energy.
    Type: Grant
    Filed: December 7, 2004
    Date of Patent: December 7, 2010
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Tatsuhide Kawahara, Soichiro Fujita
  • Publication number: 20050189100
    Abstract: Sharp bends in a defrost duct extending from a defrost outlet to a windshield, and in a face duct extending from a face outlet to both sides of a front passenger seat, are eliminated and the duct resistance of these ducts is reduced. Moreover collision safety of a passenger is improved, and an interior space of a vehicle is expanded forward. In an air-conditioning unit to be positioned to the front with respect to a front seat of a vehicle, an evaporator is positioned below and behind a blower, and a heater core is positioned below and in front of the blower. Preferably the air-conditioning unit is of a crushable structure wherein, in the event of a vehicle collision, a wall of the main cover behind the evaporator is broken, or component parts housed within the main cover are moved, to thereby absorb the impact energy.
    Type: Application
    Filed: December 7, 2004
    Publication date: September 1, 2005
    Inventors: Tatsuhide Kawahara, Soichiro Fujita
  • Patent number: 6286328
    Abstract: An overhead type air conditioning unit for a vehicle of the present invention, having a conditioner casing in which a heat exchanger for air conditioning and a blower are internally installed, and mounted in a ceiling of a passenger component. Furthermore, the air conditioning unit is characterized in that a casing of the blower is molded within the conditioner casing in one body. Therefore, the number of parts and the costs to prepare molds are reduced and expense is decreased.
    Type: Grant
    Filed: March 24, 2000
    Date of Patent: September 11, 2001
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventor: Tatsuhide Kawahara
  • Patent number: 6247319
    Abstract: The present invention relates an installation structure of the rear air conditioning unit 1, and comprises: a left bracket 20 having a body fastening portion 21, an air conditioning unit fastening portion 23 into which bolt holes 22 are bored, and a temporary fastening portion 25 into which a connecting hole 24 is bored and located at the lower side of the air conditioning unit fastening portion via a predetermined space, in one body, and installed beforehand in a body constructing member 7; a left installation member 40 having a bracket fastening portion 42 into which bolt holes 41 are bored and a connecting hook 43 which is downwardly provided at the point of the bracket fastening portion, and fastened on the side portion of the air conditioning unit. The connecting hook is inserted into the connecting hole for temporary fastening, and after that, the bracket fastening portion is fastend to the air conditioning unit fastening portion by bolts 26.
    Type: Grant
    Filed: April 18, 2000
    Date of Patent: June 19, 2001
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventor: Tatsuhide Kawahara
  • Patent number: 6129140
    Abstract: In a vehicular air conditioner having an insertion hole for inserting an air filter adjacently on the upstream side of an evaporator, the air filter is inserted and mounted along guide rails provided on the upper and lower inside walls of a cooler case, and a drain pan and a drain port are formed at the cooler case bottom surface portion corresponding to the installation position of the evaporator, a drain groove extends from the lower cooler case bottom surface portion on the upstream side of the lower guide rail to the drain pan to prevent the rainwater, sucked together with the air and blocked by the lower guide rail, from leaking into the cabin and to discharge the rainwater to the outside of the vehicle.
    Type: Grant
    Filed: September 22, 1997
    Date of Patent: October 10, 2000
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventor: Tatsuhide Kawahara
  • Patent number: 6044900
    Abstract: There is provided a heat exchanger with a receiver which has a small diameter and compact size without a liquid refrigerant suction pipe.The interior of a header tube 2 is partitioned into three chambers A, C, and F by partition plates 8a and 8b. The chamber C is provided with a refrigerant inlet 6, and the chamber F with a refrigerant outlet 7. Also, the interior of a header tube 3 is partitioned into chambers B, D, and E by partition plates 8c and 9. Receiver connecting flanges 11 are inserted in the side surface of the chambers B and E, and a receiver body 18 is fixed via receiver headers 21. An inlet passage 16 and an outlet passage 17 are formed in the receiver connecting flange 11 and the receiver header 21. A liquid refrigerant entering through the inlet passage 16 after passing through the chamber B drops in the receiver body 18 by gravity, and is conducted through the refrigerant outlet 7 after going through the outlet passage 17, chamber E, heat exchange tubes 4, and chamber F.
    Type: Grant
    Filed: April 8, 1999
    Date of Patent: April 4, 2000
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventor: Tatsuhide Kawahara
  • Patent number: 6029739
    Abstract: In a vehicular air conditioner, in which an air flow passage for directing air sucked horizontally through a suction port upward in a casing having a plurality of blowout ports at the upper part and said suction port at the lower part, and an evaporator, air mix damper, heater, and blowout mode switching damper for selectively switching the plural blowout ports are arranged in the air flow passage, the evaporator can be replaced easily and rapidly, and the contamination of the surroundings, caused by the drain which drops from the evaporator when the vehicle is inclined and flows back into the blower case and drops from it by leaking, is prevented.
    Type: Grant
    Filed: August 18, 1997
    Date of Patent: February 29, 2000
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Tomoki Izawa, Katsunari Shiroyama, Ryosaku Akimoto, Tatsuhide Kawahara, Shinji Banno, Sadahiko Tanaka, Masato Ono, Shigeharu Ishii
  • Patent number: 6000465
    Abstract: There is provided a heat exchanger with a receiver which has a small diameter and compact size without a liquid refrigerant suction pipe.The interior of a header tube 2 is partitioned into three chambers A, C, and F by partition plates 8a and 8b. The chamber C is provided with a refrigerant inlet 6, and the chamber F with a refrigerant outlet 7. Also, the interior of a header tube 3 is partitioned into chambers B, D, and E by partition plates 8c and 9. Receiver connecting flanges 11 are inserted in the side surface of the chambers B and E, and a receiver body 18 is fixed via receiver headers 21. An inlet passage 16 and an outlet passage 17 are formed in the receiver connecting flange 11 and the receiver header 21. A liquid refrigerant entering through the inlet passage 16 after passing through the chamber B drops in the receiver body 18 by gravity, and is conducted through the refrigerant outlet 7 after going through the outlet passage 17, chamber E, heat exchange tubes 4, and chamber F.
    Type: Grant
    Filed: June 27, 1997
    Date of Patent: December 14, 1999
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventor: Tatsuhide Kawahara
  • Patent number: 5881558
    Abstract: In an air conditioning apparatus for a vehicle having a casing which has an air suction opening and an air blowing opening at opposite ends of the casing. Contained within the casing are a fan for feeding air, an evaporator, an air mixing damper, and a heater, disposed in order from an upstream end of the casing. The air mixing damper is disposed in a position closely adjacent to an upstream side of the heater. The damper is constructed so as to be movable between a position for fully closing a front side of the heater and another position for fully closing a by-pass air flow passage provided for by-passing the heater. Provided at one side of the damper, is a rack extending along a moving direction of the damper, and a driving shaft, which is rotatably supported in the casing and carries a pinion which is engaged with the rack.
    Type: Grant
    Filed: April 3, 1997
    Date of Patent: March 16, 1999
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Tatsuhide Kawahara, Tomoki Izawa