Patents by Inventor Fumiaki Saku

Fumiaki Saku 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: 7896290
    Abstract: A latch device for detecting pressure reduction of a cockpit in an aircraft and releasing a bolt and a stopper device are provided so as to prevent a cockpit door from unexpectedly opening by an impact. A main latch device 100 of the cockpit door has a frame 112 fixed to a door panel, and a latch base 120 is mounted to the frame 112 capable of pivotal rotation with a pin 122 as a fulcrum. A bolt 132 is inserted into a catch in conjunction with a door handle 130. A holding/releasing portion 150 holds the latch base 120. When a pressure difference occurs between a cockpit 4 and a cabin 5, a pressure-sensing piston 160 is pushed in, a trigger 170 and a flapper 180 are rotated and the latch base 120 is released. A stopper device 190 regulates movement of the trigger 170 by movement of an inertial piston 192 when an impact force is applied from the cabin 5 side.
    Type: Grant
    Filed: October 2, 2007
    Date of Patent: March 1, 2011
    Assignee: Jamco Corporation
    Inventors: Fumiaki Saku, Tadashi Watanabe, Yasuo Sekikawa
  • Publication number: 20080111025
    Abstract: A latch device for detecting pressure reduction of a cockpit in an aircraft and releasing a bolt and a stopper device are provided so as to prevent a cockpit door from unexpectedly opening by an impact. A main latch device 100 of the cockpit door has a frame 112 fixed to a door panel, and a latch base 120 is mounted to the frame 112 capable of pivotal rotation with a pin 122 as a fulcrum. A bolt 132 is inserted into a catch in conjunction with a door handle 130. A holding/releasing portion 150 holds the latch base 120. When a pressure difference occurs between a cockpit 4 and a cabin 5, a pressure-sensing piston 160 is pushed in, a trigger 170 and a flapper 180 are rotated and the latch base 120 is released. A stopper device 190 regulates movement of the trigger 170 by movement of an inertial piston 192 when an impact force is applied from the cabin 5 side.
    Type: Application
    Filed: October 2, 2007
    Publication date: May 15, 2008
    Applicant: JAMCO CORPORATION
    Inventors: Fumiaki Saku, Tadashi Watanabe, Yasuo Sekikawa
  • Patent number: 6945497
    Abstract: A cockpit door body 10 can be opened toward a cockpit in a direction shown by arrow R1 by a crew inside a cockpit 3 by manipulating a knob on a first hinge device 40. When rapid decompression occurs in the cockpit, a mechanical pressure-sensitive device of the first hinge device 40 operates to release a bolt from a catch. By the difference in pressure between the cabin and the cockpit, the door body 10 opens in the direction of arrow R1 to thereby reduce pressure difference. When rapid decompression occurs in cabin 4, a second latch device 60 detects this pressure difference and operates mechanically to rotate a link lever 62 to release a stopper 64 from a catch 66. Flaps 30 and 32 are opened toward cabin 4 in the direction of arrow R2 by the difference in pressure between the cockpit and cabin to thereby reduce pressure difference.
    Type: Grant
    Filed: January 20, 2004
    Date of Patent: September 20, 2005
    Assignee: Jamco Corporation
    Inventors: Fumiaki Saku, Tadashi Watanabe, Yasuo Sekikawa
  • Publication number: 20050082433
    Abstract: A cockpit door body 10 can be opened toward a cockpit in a direction shown by arrow R1 by a crew inside a cockpit 3 by manipulating a knob on a first hinge device 40. When rapid decompression occurs in the cockpit, a mechanical pressure-sensitive device of the first hinge device 40 operates to release a bolt from a catch. By the difference in pressure between the cabin and the cockpit, the door body 10 opens in the direction of arrow R1 to thereby reduce pressure difference. When rapid decompression occurs in cabin 4, a second latch device 60 detects this pressure difference and operates mechanically to rotate a link lever 62 to release a stopper 64 from a catch 66. Flaps 30 and 32 are opened toward cabin 4 in the direction of arrow R2 by the difference in pressure between the cockpit and cabin to thereby reduce pressure difference.
    Type: Application
    Filed: January 20, 2004
    Publication date: April 21, 2005
    Applicant: JAMCO CORPORATION
    Inventors: Fumiaki Saku, Tadashi Watanabe, Yasuo Sekikawa
  • Patent number: 6357806
    Abstract: An in-flight meal server 1 comprises a door 20 supported by a hinge 22 at the opening of a box-shaped main body 10. A main latch device 100 for locking the door 20 to the main body 10 has a handle 110, and when the handle 110 is pulled up, a lever 120 rises and pulls out the bolt from a catch in the main body side. The plural bolts may be operated through a link mechanism connected to the lever 120, but the bolt of an auxiliary latch device 150 may also be locked by operating a knob 180 manually. When the link mechanism fails, the door is locked manually.
    Type: Grant
    Filed: October 29, 1999
    Date of Patent: March 19, 2002
    Assignee: Jamco Corporation
    Inventor: Fumiaki Saku
  • Patent number: 6234498
    Abstract: A service cart comprises a box-shaped body formed of panels, and stores trays mounting tableware in the interior thereof. The side wall comprises a honeycomb panel 12 and a surface material 70, and on the rim portions thereof are mounted rim members 72. The rim member 72 is formed by joining together a first rim member element 73 and a second rim member element 74 being contacted to the outer side of the panel. When damaged, only the damaged second element 74 may be replaced.
    Type: Grant
    Filed: September 22, 1998
    Date of Patent: May 22, 2001
    Assignee: Jamco Corporation
    Inventors: Fumiaki Saku, Yutaka Oda