Patents by Inventor Nagamasa Maruyama

Nagamasa Maruyama 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).

  • Ball transfer and seal member for ball transfer employing pile seal member
    Patent number: 11447342
    Abstract: To provide a ball transfer and a seal member for a ball transfer, a seal member is employed which is characterized in that it has a seal member employing pile fiber that, at a ball transfer having a main body which has a socket, an inner surface of which is a hemispherical concave surface, a plurality of ball bearings arranged at the main exterior socket, a primary ball, diameter of which is greater than that of said ball bearings and which is rotatably supported by the socket by way of the ball bearings, and a housing-like case which surrounds the main body socket and rotatably supports the ball bearings and the primary ball at a bearing portion thereof and which has a hole from which a portion of the primary ball is made to protrude at an upper surface of the primary ball socket.
    Type: Grant
    Filed: May 11, 2020
    Date of Patent: September 20, 2022
    Assignees: SANWA TECHNO CO., LTD., FREEBEAR CORPORATION
    Inventors: Kazuro Fukui, Toshio Takino, Kaito Oomae, Nagamasa Maruyama, Hiroyuki Furuuchi, Atsushi Sakane
  • BALL TRANSFER AND SEAL MEMBER FOR BALL TRANSFER EMPLOYING PILE SEAL MEMBER
    Publication number: 20220170508
    Abstract: To provide a ball transfer and a seal member for a ball transfer, a seal member is employed which is characterized in that it has a seal member employing pile fiber that, at a ball transfer having a main body which has a socket, an inner surface of which is a hemispherical concave surface, a plurality of ball bearings arranged at the main exterior socket, a primary ball, diameter of which is greater than that of said ball bearings and which is rotatably supported by the socket by way of the ball bearings, and a housing-like case which surrounds the main body socket and rotatably supports the ball bearings and the primary ball at a bearing portion thereof and which has a hole from which a portion of the primary ball is made to protrude at an upper surface of the primary ball socket.
    Type: Application
    Filed: February 4, 2022
    Publication date: June 2, 2022
    Applicants: SANWA TECHNO CO., LTD., FREEBEAR CORPORATION
    Inventors: Kazuro Fukui, Toshio Takino, Kaito Oomae, Nagamasa Maruyama, Hiroyuki Furuuchi, Atsushi Sakane
  • BALL TRANSFER AND SEAL MEMBER FOR BALL TRANSFER EMPLOYING PILE SEAL MEMBER
    Publication number: 20210207299
    Abstract: To provide a ball transfer and a seal member for a ball transfer, a seal member is employed which is characterized in that it has a seal member employing pile fiber that, at a ball transfer having a main body which has a socket, an inner surface of which is a hemispherical concave surface, a plurality of ball bearings arranged at the main exterior socket, a primary ball, diameter of which is greater than that of said ball bearings and which is rotatably supported by the socket by way of the ball bearings, and a housing-like case which surrounds the main body socket and rotatably supports the ball bearings and the primary ball at a bearing portion thereof and which has a hole from which a portion of the primary ball is made to protrude at an upper surface of the primary ball socket.
    Type: Application
    Filed: May 11, 2020
    Publication date: July 8, 2021
    Applicants: SANWA TECHNO CO., LTD., FREEBEAR CORPORATION
    Inventors: Kazuro Fukui, Toshio Takino, Kaito Oomae, Nagamasa Maruyama, Hiroyuki Furuuchi, Atsushi Sakane