Patents by Inventor Tetsuo Maeda

Tetsuo Maeda 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: 9194647
    Abstract: A toy gun includes a toy gun body and a toy gun gas cartridge loading device. The toy gun body includes a housing, a gun body first lock and a gun body second lock. The gas cartridge loading device is detachably housed in the housing and is locked with the gun body first lock. The gas cartridge loading device includes a loading device second lock which is housed in the loading device housing when an end of the gas cartridge loading device is housed in the housing. The loading device second lock is located on a lateral side of the gas cartridge loading device. When the gun body first lock is disengaged, the loading device second lock engages with a gun body second lock.
    Type: Grant
    Filed: January 15, 2014
    Date of Patent: November 24, 2015
    Assignee: MARUZEN COMPANY LIMITED
    Inventor: Tetsuo Maeda
  • Publication number: 20150027427
    Abstract: A toy gun includes a barrel in which bullets travel due to released gas, a magazine that is cylindrically shaped and disposed in parallel with the barrel to house the bullets, a magazine joint that couples the rear end of the magazine to the barrel and allows the bullets to travel therein, a cut portion disposed between the magazine and the magazine joint and positioned toward the barrel, a magazine follower base that slides in the magazine, a pressing member that presses the magazine follower base toward the rear end of the toy gun, a trunk section that is pivotably mounted toward the rear end of the magazine follower base and allows a barrel side end thereof to slide in the magazine joint, and a magazine follower disposed on the barrel side end of the trunk section.
    Type: Application
    Filed: July 23, 2014
    Publication date: January 29, 2015
    Applicant: MARUZEN COMPANY LIMITED
    Inventor: Tetsuo Maeda
  • Publication number: 20140338650
    Abstract: A toy gun includes a toy gun body and a toy gun gas cartridge loading device to be attached to the toy gun body. The toy gun body has a loading device housing located around a gun body coupling valve. When attaching the toy gun gas cartridge loading device to the toy gun body with an end portion of the device inserted in the loading device housing of the toy gun body, a lock of the loading device is locked with a first lock of the gun body, and when detaching it from the toy gun body, the lock of the loading device is locked with a gun body second lock.
    Type: Application
    Filed: January 16, 2014
    Publication date: November 20, 2014
    Applicant: MARUZEN COMPANY LIMITED
    Inventor: Tetsuo Maeda
  • Publication number: 20140290637
    Abstract: A toy gun includes a toy gun body and a toy gun gas cartridge loading device. The toy gun body includes a housing, a gun body first lock and a gun body second lock. The gas cartridge loading device is detachably housed in the housing and is locked with the gun body first lock. The gas cartridge loading device includes a loading device second lock which is housed in the loading device housing when an end of the gas cartridge loading device is housed in the housing. The loading device second lock is located on a lateral side of the gas cartridge loading device. When the gun body first lock is disengaged, the loading device second lock engages with a gun body second lock.
    Type: Application
    Filed: January 15, 2014
    Publication date: October 2, 2014
    Applicant: Maruzen Company Limited
    Inventor: Tetsuo Maeda
  • Patent number: 8763597
    Abstract: It is made possible to use a toy gun that fires bullets by compressed gas without the replacement of a gas cartridge for a long time and the portability of the gas cartridge is enhanced. The air chamber body placed in the toy gun forms an air chamber. Compressed gas in the air chamber body passes through a gas discharge portion and shoots a bullet held by a bullet holding portion out of a muzzle. A valve establishes or breaks communication between the air chamber body and the gas discharge portion according to operation with an operation portion. The toy gun includes multiple gas cartridge attachment portions. A gas bomb is attached to each of the gas cartridge attachment portions. Each gas cartridge attachment portion is provided with a first valve portion. Compressed gas in the gas bomb attached to each gas cartridge attachment portion is guided into the air chamber by way of a gas introduction portion.
    Type: Grant
    Filed: January 26, 2012
    Date of Patent: July 1, 2014
    Assignee: Maruzen Company Limited
    Inventor: Tetsuo Maeda
  • Patent number: 8714145
    Abstract: A mechanism for an open bolt type air gun includes a trigger that is pulled with a bolt in its retracted position. The mechanism includes a sear or an inner safety and a trigger bar. The sear is located behind and below the bolt and has a projection to come into contact with a locking projection of the bolt. The inner safety is located below the bolt and has a projection to come into contact with the locking projection of the bolt. A first trigger bar is located below the sear and has a bolt contact part which extends upward at its front end and comes into contact with a cam part of the bolt and a locking projection to lock the sear. A second trigger bar is located below the inner safety and forward of the first trigger bar and has a locking projection to lock the inner safety.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: May 6, 2014
    Assignee: Maruzen Company Limited
    Inventor: Tetsuo Maeda
  • Publication number: 20130263840
    Abstract: A mechanism for an open bolt type air gun includes a trigger that is pulled with a bolt in its retracted position. The mechanism includes a sear or an inner safety and a trigger bar. The sear is located behind and below the bolt and has a projection to come into contact with a locking projection of the bolt. The inner safety is located below the bolt and has a projection to come into contact with the locking projection of the bolt. A first trigger bar is located below the sear and has a bolt contact part which extends upward at its front end and comes into contact with a cam part of the bolt and a locking projection to lock the sear. A second trigger bar is located below the inner safety and forward of the first trigger bar and has a locking projection to lock the inner safety.
    Type: Application
    Filed: September 14, 2012
    Publication date: October 10, 2013
    Applicant: Maruzen Company Limited
    Inventor: Tetsuo Maeda
  • Patent number: 8550061
    Abstract: A panel that conceals a gas cartridge attached to a toy gun is easily attached and detached without impairing the appearance of the toy gun. The gas cartridge is housed in a housing space formed in a cartridge housing portion and supplies compressed gas for firing a bullet. An introduction port for introducing the gas cartridge is provided in a first face of the cartridge housing portion. A working portion is provided in the cartridge housing portion and is moved in a direction along the first face. The panel is detachably attached to the cartridge housing portion and covers the introduction port. A protruded portion is extended from the lid portion of the panel. The protruded portion is provided with an inclined portion. The working portion is brought into slide contact with the inclined portion and moves the panel.
    Type: Grant
    Filed: January 26, 2012
    Date of Patent: October 8, 2013
    Assignee: Maruzen Company Limited
    Inventor: Tetsuo Maeda
  • Patent number: 8550062
    Abstract: A gas cartridge is firmly attached to a toy gun and the gas cartridge is replaced through simple operation. The gas cartridge is filled therein with compressed gas for firing a bullet. A cartridge housing portion slidably holds the circumferential surface of the gas cartridge. The lid portion of the gas cartridge housed in the cartridge housing portion is coupled to a cartridge attachment portion. A clamp arm has a roller and an extended portion and can be freely rotated around a rotation shaft. When the clamp arm is rotated, the roller presses the bottom portion of the gas cartridge in the cartridge housing portion. A raising lever has an abutment portion and is coupled to the extended portion so that the raising lever can be rotated around an installation shaft. When the raising lever is moved, the abutment portion slides on the sliding surface and rotates the clamp arm.
    Type: Grant
    Filed: January 26, 2012
    Date of Patent: October 8, 2013
    Assignee: Maruzen Company Limited
    Inventor: Tetsuo Maeda
  • Publication number: 20130192577
    Abstract: It is made possible to use a toy gun that fires bullets by compressed gas without the replacement of a gas cartridge for a long time and the portability of the gas cartridge is enhanced. The air chamber body placed in the toy gun forms an air chamber. Compressed gas in the air chamber body passes through a gas discharge portion and shoots a bullet held by a bullet holding portion out of a muzzle. A valve establishes or breaks communication between the air chamber body and the gas discharge portion according to operation with an operation portion. The toy gun includes multiple gas cartridge attachment portions. A gas bomb is attached to each of the gas cartridge attachment portions. Each gas cartridge attachment portion is provided with a first valve portion. Compressed gas in the gas bomb attached to each gas cartridge attachment portion is guided into the air chamber by way of a gas introduction portion.
    Type: Application
    Filed: January 26, 2012
    Publication date: August 1, 2013
    Applicant: Maruzen Company Limited
    Inventor: Tetsuo Maeda
  • Publication number: 20130192574
    Abstract: A panel that conceals a gas cartridge attached to a toy gun is easily attached and detached without impairing the appearance of the toy gun. The gas cartridge is housed in a housing space formed in a cartridge housing portion and supplies compressed gas for firing a bullet. An introduction port for introducing the gas cartridge is provided in a first face of the cartridge housing portion. A working portion is provided in the cartridge housing portion and is moved in a direction along the first face. The panel is detachably attached to the cartridge housing portion and covers the introduction port. A protruded portion is extended from the lid portion of the panel. The protruded portion is provided with an inclined portion. The working portion is brought into slide contact with the inclined portion and moves the panel.
    Type: Application
    Filed: January 26, 2012
    Publication date: August 1, 2013
    Applicant: Maruzen Company Limited
    Inventor: Tetsuo Maeda
  • Publication number: 20130192578
    Abstract: A gas cartridge is firmly attached to a toy gun and the gas cartridge is replaced through simple operation. The gas cartridge is filled therein with compressed gas for firing a bullet. A cartridge housing portion slidably holds the circumferential surface of the gas cartridge. The lid portion of the gas cartridge housed in the cartridge housing portion is coupled to a cartridge attachment portion. A clamp arm has a roller and an extended portion and can be freely rotated around a rotation shaft. When the clamp arm is rotated, the roller presses the bottom portion of the gas cartridge in the cartridge housing portion. A raising lever has an abutment portion and is coupled to the extended portion so that the raising lever can be rotated around an installation shaft. When the raising lever is moved, the abutment portion slides on the sliding surface and rotates the clamp arm.
    Type: Application
    Filed: January 26, 2012
    Publication date: August 1, 2013
    Applicant: Maruzen Company Limited
    Inventor: Tetsuo Maeda
  • Patent number: 8483239
    Abstract: According to one embodiment, an IP broadcast system includes a transmitting side and a receiving side connected to the transmitting side through a broadcast network on an IP network. The transmitting side includes a multiplexer which generates a standardized multiplex frame including at least a header field and an information field by multiplexing a plurality of RTP packets. The receiving side includes a buffer which temporarily holds the multiplex frame from the broadcast network and a program reproducer which retrieves and analyzes the multiplex frame from the buffer, extracts a reproduction clock shared by a plurality of programs, demultiplexes a plurality of TSs for each program from the multiplex frame, and based on the reproduction clock, reproduces the programs from each TS.
    Type: Grant
    Filed: March 14, 2008
    Date of Patent: July 9, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kenji Kimiyama, Yoshiro Osaki, Naoko Satoh, Tetsuo Maeda
  • Patent number: 8423216
    Abstract: To provide an engine controller of a hybrid vehicle that can perform a forced driving operation of an engine by performing the same inspection procedure as that of a vehicle using only an engine as a drive source even in the hybrid vehicle. The engine controller includes an operation control unit (ECM) that performs forced driving control of the engine to maintain an operation in a predetermined state suitable for an inspection if a determination that the inspection of the engine by a forced driving operation is requested is made, and an operation state determination unit (EVCM) that determines whether the cold start condition is satisfied or unsatisfied based on information containing at least with or without change from the disconnected state to the connected state of the battery. If the cold start condition is satisfied, the forced driving control of the engine is performed by the operation control unit.
    Type: Grant
    Filed: October 12, 2010
    Date of Patent: April 16, 2013
    Assignee: Mitsubishi Electric Corporation
    Inventors: Takahiro Yoshimura, Tetsuo Maeda, Takehisa Fukuda, Takeshi Kawakami, Toshio Otsuka
  • Patent number: 8161957
    Abstract: A valve body is in a cylindrical shape and communicates with the rear-side end of a barrel on the front side. The valve body forms an air chamber therein. A discharge valve is positioned in the valve body. The discharge valve is hit by a bolt from behind and thereby opens or shuts the communication between the barrel and the air chamber. When the bolt makes forward or backward slide movement, the valve body is fit into a first opening at the front part of the bolt. The cylindrical portion or the closed end of the bolt is provided with a second opening through which the air in the bolt flows in or out.
    Type: Grant
    Filed: October 15, 2010
    Date of Patent: April 24, 2012
    Assignee: Maruzen Company Limited
    Inventor: Tetsuo Maeda
  • Patent number: 8127755
    Abstract: According to the present invention, by providing an extremely simple member such as a partition wall having a microscopic hole section, it is possible to reliably reduce the speed of a bullet to within a fixed speed, even a complicated decompression device such as a regulator is not provided. As a result, manufacturing time for the air gun is shortened, it is possible to lower manufacturing cost, and there is the effect of improving the manufacturing efficiency.
    Type: Grant
    Filed: October 17, 2008
    Date of Patent: March 6, 2012
    Assignee: Maruzen Company Limited
    Inventor: Tetsuo Maeda
  • Patent number: 8109260
    Abstract: A bolt has a cylindrical fit receiving portion. When the bolt slides forward, the rear part of a valve body enters the fit receiving portion. At a closed end opposed to its opening behind the fit receiving portion, a cylindrical body is provided. The cylindrical body lets the interior of the bolt and the exterior of the bolt communicate with each other. The shank of an opening/closing body is slidably placed in the cylindrical body. This opening/closing body has an lid portion at the end of the shank on the fit receiving portion side and a coming-off preventing portion at the outside end of the shank. An opening/closing body spring is placed between the closed end of the bolt and the lid portion and pushes the lid portion toward the fit receiving portion.
    Type: Grant
    Filed: June 10, 2010
    Date of Patent: February 7, 2012
    Assignee: Maruzen Company Limited
    Inventor: Tetsuo Maeda
  • Patent number: 8100120
    Abstract: A bullet feed portion reciprocates and is positioned in a firing position where a bullet housing chamber is opposed to a bullet feed port, and in a non-firing position where the bullet feed port is closed. A gas flow path guides compressed gas to the bullet feed port in an inner barrel. A valve is biased to close the gas flow path. A firing action mechanism has a movable body that can be freely reciprocated along the inner barrel. The firing action mechanism moves the bullet feed portion to a firing position and moves the valve to a non-biasing direction. A power transmission unit transforms motor force into the locomotion of a movable body. When trigger is pulled, the motor moves the movable body toward the bullet feed port to feed a bullet into the bullet feed portion, and actuate the firing action mechanism.
    Type: Grant
    Filed: June 8, 2010
    Date of Patent: January 24, 2012
    Assignee: Maruzen Company Limited
    Inventor: Tetsuo Maeda
  • Patent number: 8051848
    Abstract: A trigger sear is placed between a trigger and a bolt sear. The engagement between the bolt sear and a bolt is removed by pulling the trigger. The bolt makes reciprocating motion in the back and forth direction of the toy gun. While it reciprocates once, the bolt opens and closes a valve portion and fires off a bullet B. When the trigger is pulled, a stopper pawl and a driving pawl are engaged with a control plate having a ratchet gear structure. In conjunction with the reciprocating motion of the bolt, the driving pawl rotates and displaces the control plate in a forward direction. When the toy gun fires a predetermined number of bullets B, a sear bar is displaced. The sear bar moves the trigger sear and causes it to break away from the bolt sear.
    Type: Grant
    Filed: June 8, 2010
    Date of Patent: November 8, 2011
    Assignee: Maruzen Company Limited
    Inventor: Tetsuo Maeda
  • Publication number: 20110265775
    Abstract: A valve body is in a cylindrical shape and communicates with the rear-side end of a barrel on the front side. The valve body forms an air chamber therein. A discharge valve is positioned in the valve body. The discharge valve is hit by a bolt from behind and thereby opens or shuts the communication between the barrel and the air chamber. When the bolt makes forward or backward slide movement, the valve body is fit into a first opening at the front part of the bolt. The cylindrical portion or the closed end of the bolt is provided with a second opening through which the air in the bolt flows in or out.
    Type: Application
    Filed: October 15, 2010
    Publication date: November 3, 2011
    Applicant: Maruzen Company Limited
    Inventor: Tetsuo Maeda