Patents by Inventor Naofumi Matoba

Naofumi Matoba 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).

  • Reduction motor
    Patent number: 9856943
    Abstract: A speed reducer (20) of a reduction motor (1) includes a first internal gear (22) attached to the housing, an input shaft (21) having an eccentric shaft portion (21d), a first external gear (24) having a pitch circle diameter smaller than a pitch circle diameter of the first internal gear (22), and an output member (27) connected to the first external gear (24). The input shaft (21) is configured to be rotated by a rotation input from the electric motor (10). The first external gear (24) is configured to be placed inside of the first internal gear (22) under a state that a part of an external teeth (24a) of the first external gear (24) engages with an internal teeth (22d) of the first internal gear (24a). A holding member (28) fixes the first internal gear (22) in the axial direction of the input shaft (21).
    Type: Grant
    Filed: September 20, 2013
    Date of Patent: January 2, 2018
    Assignee: Mitsuba Corporation
    Inventors: Tatsuyuki Saito, Tetsuya Watanabe, Naofumi Matoba, Hitoshi Tsukamoto
  • REDUCTION MOTOR
    Publication number: 20150219187
    Abstract: A speed reducer (20) of a reduction motor (1) includes a first internal gear (22) attached to the housing, an input shaft (21) having an eccentric shaft portion (21d), a first external gear (24) having a pitch circle diameter smaller than a pitch circle diameter of the first internal gear (22), and an output member (27) connected to the first external gear (24). The input shaft (21) is configured to be rotated by a rotation input from the electric motor (10). The first external gear (24) is configured to be placed inside of the first internal gear (22) under a state that a part of an external teeth (24a) of the first external gear (24) engages with an internal teeth (22d) of the first internal gear (24a). A holding member (28) fixes the first internal gear (22) in the axial direction of the input shaft (21).
    Type: Application
    Filed: September 20, 2013
    Publication date: August 6, 2015
    Inventors: Tatsuyuki Saito, Tetsuya Watanabe, Naofumi Matoba, Hitoshi Tsukamoto