Patents by Inventor Masao Iwami

Masao Iwami 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: 10737570
    Abstract: When a fuel tank inclines, a valve body device for the fuel tank restricts the flow of fuel to the exterior of the fuel tank, thereby preventing environmental pollution and improving fuel consumption. A rise/fall member and a valve body are lowered by an urge force less than a combined weight of the valve body and the rise/fall member, thereby creating an opening in a valve portion. A coil spring expands and the valve body contacts convex portions on a first inner surface of a cylinder main body. After a pressure reduction at a communication port of a resistance member, the fuel flows from a small-diameter space of a blow-up member, so that the flowing fuel pushes up the valve body and the rise/fall member closes the valve portion together with the urge force of the coil spring.
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: August 11, 2020
    Inventors: Masao Iwami, Masashi Iwami
  • Patent number: 10723221
    Abstract: A filler cap for a fuel tank is disclosed and is configured to prevent environmental pollution and improve fuel consumption without discharging fuel or harmful gas to an exterior of the fuel tank. A rise/fall member and a valve body are lowered by an urge force that is less than a total weight of the valve body and the rise/fall member, thereby opening a valve portion. When the fuel tank inclines, a coil spring expands and the valve body contacts with convex portions on an inner surface of a cylinder main body. After a pressure reduces at a communication port of a resistance member, the fuel flows from a small diameter space of a blow-up member. The flowing fuel pushes up the valve body and the rise/fall member thereby closing the valve portion together with the urge force of the coil spring.
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: July 28, 2020
    Inventors: Masao Iwami, Masashi Iwami
  • Publication number: 20190255937
    Abstract: When a fuel tank inclines, a valve body device for the fuel tank restricts the flow of fuel to the exterior of the fuel tank, thereby preventing environmental pollution and improving fuel consumption. A rise/fall member and a valve body are lowered by an urge force less than a combined weight of the valve body and the rise/fall member, thereby creating an opening in a valve portion. A coil spring expands and the valve body contacts convex portions on a first inner surface of a cylinder main body. After a pressure reduction at a communication port of a resistance member, the fuel flows from a small-diameter space of a blow-up member, so that the flowing fuel pushes up the valve body and the rise/fall member closes the valve portion together with the urge force of the coil spring.
    Type: Application
    Filed: March 15, 2019
    Publication date: August 22, 2019
    Inventors: Masao IWAMI, Masashi IWAMI
  • Patent number: 10377230
    Abstract: A filler cap for a fuel tank is disclosed that can prevent environmental pollution and also improve fuel consumption without discharging fuel or harmful gas evaporated therefrom to an exterior of the fuel tank, until a pressure in the fuel tank reaches a predetermined value. In summary, immediately after attaching the filler cap to a fill opening, pressures are balanced between an interior and an exterior of the fuel tank. A spring raises a valve body and the rise/fall member, so that a lateral outer circumference of the valve body point contacts with plural convex portions of a second side wall, thereby closing the valve portion. In such a state, coming and going of a fluid between a first space and an opening is not allowed. When a pressure in the fuel tank reaches 5 kPa, the fluid rise a first air passage formed in spaces between respective convex portions on the second side wall, passing the valve portion.
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: August 13, 2019
    Inventors: Masao Iwami, Masashi Iwami
  • Publication number: 20190210455
    Abstract: A filler cap for a fuel tank is disclosed and is configured to prevent environmental pollution and improve fuel consumption without discharging fuel or harmful gas to an exterior of the fuel tank. A rise/fall member and a valve body are lowered by an urge force that is less than a total weight of the valve body and the rise/fall member, thereby opening a valve portion. When the fuel tank inclines, a coil spring expands and the valve body contacts with convex portions on an inner surface of a cylinder main body. After a pressure reduces at a communication port of a resistance member, the fuel flows from a small diameter space of a blow-up member. The flowing fuel pushes up the valve body and the rise/fall member thereby closing the valve portion together with the urge force of the coil spring.
    Type: Application
    Filed: March 15, 2019
    Publication date: July 11, 2019
    Inventors: Masao IWAMI, Masashi IWAMI
  • Publication number: 20170166047
    Abstract: Immediately after attaching a filler cap to a fill opening, a spring raises a valve body and the rise/fall member, so that a laterally outer circumference of a valve body point contacts with plural convex portions of a second side wall, thereby closing the valve portion. In such a state, coming and going of a fluid between a first space S1 and an opening S3 is not allowed. When a pressure in the fuel tank reaches 5 kPa, the fluid rise a first air passage formed in spaces between respective convex portions on the second side wall, passing the valve portion. Rising fluid lowers the valve body to allow discharging an excessive pressure to the exterior of the fuel tank.
    Type: Application
    Filed: December 13, 2016
    Publication date: June 15, 2017
    Inventors: Masao IWAMI, Masashi IWAMI
  • Patent number: 9610839
    Abstract: Filler cap for fuel tank which can further prevent environmental pollution without releasing harmful gas evaporated from fuel in fuel tank and can improve fuel efficiency is provided. When vaporized gas is generated in fuel tank, inner pressure of fuel tank is increased to pressure for deformation strength prescribed to valve body or more, a central part of valve body enters into third space thereby causing deformation so to shorten outer diameter of valve body to form wrinkles, and in peripheral part of valve body are formed a portion contacting to pivot of cylinder main body when deforming and concave portion not contacting thereto, second space and third space are connected via space of this concave portion and air passage channel formed in wall surface forming second space to release excessive pressure to outside fuel tank thereby bringing pressure inside fuel tank to lower than the pressure for deformation strength.
    Type: Grant
    Filed: June 15, 2015
    Date of Patent: April 4, 2017
    Inventors: Masao Iwami, Masashi Iwami
  • Publication number: 20150360561
    Abstract: Filler cap for fuel tank which can further prevent environmental pollution without releasing harmful gas evaporated from fuel in fuel tank and can improve fuel efficiency is provided. When vaporized gas is generated in fuel tank, inner pressure of fuel tank is increased to pressure for deformation strength prescribed to valve body or more, a central part of valve body enters into third space thereby causing deformation so to shorten outer diameter of valve body to form wrinkles, and in peripheral part of valve body are formed a portion contacting to pivot of cylinder main body when deforming and concave portion not contacting thereto, second space and third space are connected via space of this concave portion and air passage channel formed in wall surface forming second space to release excessive pressure to outside fuel tank thereby bringing pressure inside fuel tank to lower than the pressure for deformation strength.
    Type: Application
    Filed: June 15, 2015
    Publication date: December 17, 2015
    Inventors: Masao IWAMI, Masashi IWAMI
  • Patent number: 8657140
    Abstract: A filler cap for a fuel tank wherein, when a pressure increases in the fuel tank, the valve body moves upward so an upper peripheral edge part of the valve body may be contacted to a first surface of shoulder cylinder portion, thereby shutting down a connection between a second space of cylinder main body and a third space connected to atmosphere. When the pressure in the fuel tank exceeds a pressure for a deformation strength of the valve body, a central part of the valve body enters into the third space causing deformation to shorten the outer diameter thereof; in the peripheral part of the valve body a concave portion not contacted to a lower end of a third surface that forms the third space, and the second space and the third space are connected via a space of this concave portion to release excessive pressure.
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: February 25, 2014
    Inventors: Masashi Iwami, Masao Iwami
  • Publication number: 20130075396
    Abstract: A filler cap for a fuel tank wherein, when a pressure increases in the fuel tank, the valve body moves upward so an upper peripheral edge part of the valve body may be contacted to wall of a shoulder cylinder portion that forms a second space, thereby shutting down a connection between a second space of cylinder main body and a third space connected to atmosphere. When the pressure in the fuel tank exceeds a pressure for a deformation strength of the valve body, a central part of the valve body enters into the third space causing deformation to shorten the outer diameter thereof; in the peripheral part of the valve body a concave portion not contacted to a lower end of the wall that forms the third space, and the second space and the third space are connected via a space of this concave portion to release excessive pressure.
    Type: Application
    Filed: July 13, 2012
    Publication date: March 28, 2013
    Inventors: Masashi IWAMI, Masao IWAMI
  • Patent number: 7823611
    Abstract: An object is to provide a filler cap of a fuel tank capable of securely preventing a disadvantage that, when the fuel tank tilts, fuel stored in the fuel tank is discharged from an air passage disposed at a cap main body. The cap includes the air passage which is constituted at the cap main body and which allows the inside of the fuel tank to communicate with the outside, and a valve mechanism portion constituted at this air passage. The valve mechanism portion includes a tube main body having a tube-like portion and a reduced diameter portion formed externally and continuously from this tube-like portion, a float stored in the tube main body with a space between the float and an inner surface of this tube main body, a piston positioned on a fuel tank side of the float and stored in the tube main body with a space between the piston and the inner surface of the tube main body, and a spherical member positioned on an outer side of the float and stored in the tube main body.
    Type: Grant
    Filed: May 29, 2007
    Date of Patent: November 2, 2010
    Assignees: Fuji Jukogyo Kabushiki Kaisha
    Inventors: Masashi Iwami, Masao Iwami, Mitsuo Kadoi, Masanori Horiuchi