Patents by Inventor Fumio Kumagai

Fumio Kumagai 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: 11940274
    Abstract: A tilt detecting unit has a tilt sensor and is rotatably supported by an inner frame through a second shaft orthogonal to a first shaft, a first encoder is provided on the first shaft, a second encoder is provided on the second shaft, motors are provided on the respective shafts, an arithmetic processing module drives the respective motors so that the tilt sensor detects the horizontality based on a signal issued by the tilt sensor, calculates a tilt of the outer frame based on the outputs from the first and second encoders when the tilt sensor detects the horizontality, reverses the tilt detecting unit 180° at least once based on the outputs from the respective encoders in a stationary state of the tilt detecting device, and performs the calibration of the tilt sensor based on the detection signals output from the tilt sensor before and after the reversal.
    Type: Grant
    Filed: October 15, 2020
    Date of Patent: March 26, 2024
    Assignee: TOPCON Corporation
    Inventors: Fumio Ohtomo, Nobuyuki Nishita, Kaoru Kumagai
  • Patent number: 5574254
    Abstract: A water-proof sealing structure for an electric junction box including a main box having a first fitting portion and a water-proof covering having a second fitting portion to be mated with the first fitting portion; wherein either the first or second fitting portion is integrally formed with an elastomer-made fitting groove having a narrowed portion therein, while the other fitting portion is formed with a locking projection wall provided with a stopper; wherein the locking projection wall is suppressed by the narrowed portion when inserted into the fitting groove, forming simultaneously an air-keeping section between a top end of the locking projection wall and an innermost portion of the fitting groove.
    Type: Grant
    Filed: May 17, 1995
    Date of Patent: November 12, 1996
    Assignees: Yazaki Corporation, Arai Seisakusho Co., Ltd.
    Inventors: Fumimasa Mori, Masato Odake, Kazuhiro Shimizu, Fumio Kumagai
  • Patent number: 5195900
    Abstract: A connector-mounting structure for mounting a pair of mating connectors for connecting wires conducting electrical current comprises a bracket which is mounted to a member of an automobile, for example. A first connector which houses a plurality of first terminals with wires connected thereto is placed in the bracket. A second connector which houses a plurality of second terminals with wires connected thereto is connected to the first connector. Pivot pins, slots or slot and a hole, and stopping members are formed in the bracket and first connector so as to hold the first connector at a first position for connecting the second connector to the first connector and to retain the first connector at a second position to which the first connector is moved from the first position by turning.
    Type: Grant
    Filed: October 1, 1991
    Date of Patent: March 23, 1993
    Assignee: Yazaki Corporation
    Inventors: Fumio Kumagai, Mamoru Ono
  • Patent number: 5164546
    Abstract: A wire harness protector prevents wire harness wear resulting from repeated flexing at a single point by holding the harness in a bent fashion. The harness fits between a retaining portion and a retaining cap. A fixing arm may be connected to the retaining portion to facilitate attachment of the harness to a vehicle.
    Type: Grant
    Filed: August 15, 1990
    Date of Patent: November 17, 1992
    Assignee: Yazaki Corporation
    Inventor: Fumio Kumagai
  • Patent number: 4797512
    Abstract: To increase strength of a branch wire protector including a T-shaped semicylindrical member with a trunk portion and a branch portion; a trunk semicylindrical member with a semicylindrical base portion; a branch semicylindrical member; and locking member for locking the trunk and branch semicylindrical members to the T-shaped semicylindrical member, a clinch projection member is formed at an inner end surface of the branch semicylindrical member and a mated clinch hole is formed in the semicylindrical base portion of the trunk semicylindrical member.
    Type: Grant
    Filed: December 24, 1987
    Date of Patent: January 10, 1989
    Assignee: Yazaki Corporation
    Inventors: Fumio Kumagai, Toshio Okazaki
  • Patent number: D315332
    Type: Grant
    Filed: October 13, 1987
    Date of Patent: March 12, 1991
    Assignee: Yazaki Corp.
    Inventors: Fumio Kumagai, Masataka Ohishi