Patents by Inventor Nikita Grigoriev

Nikita Grigoriev 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).

  • Multi-framed convertible article of furniture
    Patent number: 5722101
    Abstract: An article of furniture is disclosed which includes a foldable frame assembly including a seat frame and a back rest frame. The article of furniture includes an integral frame. A trifold configuration and two bifold configurations are disclosed. A four-bar linkage is disclosed to provide added stability. As part of the four-bar linkage, a leg is hingedly attached to the back rest frame. A linkage interconnects the leg and the seat frame such that the leg retracts proximate the frame when the article furniture is in a seat position and extends away from the frame when said article of furniture is in an extended horizontal position. A release mechanism is also disclosed which is hingedly attached to the seat frame for assisting opening and closing the seat frame when the article of furniture is being placed in a seat position.
    Type: Grant
    Filed: May 17, 1996
    Date of Patent: March 3, 1998
    Inventor: Nikita Grigoriev
  • Front wheel drive bicycle exercise device
    Patent number: 5501648
    Abstract: A front wheel drive bicycle exercise device including a front wheel and a reciprocating handlebar assembly attached to a frame. A clutch and a mechanical advantage device are utilized to drive the front wheel of the bicycle in response to the reciprocative displacement of the handlebar assembly.
    Type: Grant
    Filed: July 15, 1994
    Date of Patent: March 26, 1996
    Inventor: Nikita Grigoriev
  • Impulse drive mechanism and shock driver for a land vehicle
    Patent number: 5429379
    Abstract: A land vehicle or bicycle (110) is disclosed having a front wheel drive which includes an impulse drive mechanism and shock driver. The front wheel drive mechanism (140) includes a handle bar/driver mechanism (151) attached to an impulse drive mechanism (166). The bicycle (110) may be used such that the handle bar/driver mechanism (151) is fixed for use as a conventional bicycle or may be released by a twist grip (159) or thumb release (193) so that the bicycle may be driven by a drive mechanism (140). The shock drive mechanism (FIGS. 14-16) provides forward propulsion force due to the compression (308) and recoil (304) forces of a shock absorber (144) when the bicycle (110) encounters a bump, curb or other obstacle.
    Type: Grant
    Filed: March 7, 1994
    Date of Patent: July 4, 1995
    Inventor: Nikita Grigoriev
  • Convertible furniture
    Patent number: 4538308
    Abstract: A piece of furniture which is convertible to a bed, a sofa or couch, a recliner, a sick bed or a day bed for convalescents and which utilizes the geometry of its component parts to facilitate conversion from one mode, e.g., sofa, to another mode, e.g., bed.
    Type: Grant
    Filed: December 9, 1983
    Date of Patent: September 3, 1985
    Inventor: Nikita Grigoriev