Patents by Inventor Takanobu Esaki

Takanobu Esaki 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: 5467623
    Abstract: A door locking handle assembly of a pull-out and side-swinging lever-action type, includes a casing (4) having a rotatable locking shaft (12) and a pivotable handle (19). When the handle (19) is pushed into a front concave portion (6) of the casing (4), the handle (19) can be held in its retracted position without fail. A push button (27) is pivotally mounted on a front-end portion of the handle (19) so that when the push button (27) is swingably depressed, the handle (19) can project outwardly from the front concave portion (6) of the casing (4). The thus projected handle (19) is side-swing to have a catch plate (11) of a locking shaft (12) disengaged from its locking position.
    Type: Grant
    Filed: February 3, 1994
    Date of Patent: November 21, 1995
    Assignee: Takigen Manufacturing Co. Ltd.
    Inventors: Kenichi Yamada, Takanobu Esaki
  • Patent number: 5454239
    Abstract: A door locking handle assembly of a pull-out and side-swinging lever-action type, includes a casing (4) having a locking shaft (12) pivotally attached to a handle (19), which can be pushed into a casing (4), and locked in its retracted position without fail. A push button (27) is pivoted to a front-end portion of the handle (19) through a pivot (25) passing through an axial hole (50) of the button (27). The hole (50) is obliquely extended and assumes an oval shape. By depressing the pivoted push button (27), the handle (19) swings out of a front concave portion (6) of the casing (4). A catch plate (11) attached to the locking shaft (12) is swingably moved to its unlocking position by side-swinging the handle (19), which has its front-end portion receive a lock unit (31) fixedly in an embedding manner.
    Type: Grant
    Filed: February 3, 1994
    Date of Patent: October 3, 1995
    Assignee: Takigen Manufacturing Co. Ltd.
    Inventors: Takanobu Esaki, Kenichi Yamada
  • Patent number: 5450734
    Abstract: A door locking handle assembly of a pull-out and side-swinging lever-action type includes a casing (1) having a locking shaft (11) and a handle (18) which can be swung out and pushed in a front concave portion (3) of the casing smoothly without fail. A push button (24) is pivoted to a front end of the handle (18) through a cross pivot (31), and has its intermediate portion (26) partially formed into a corrugated surface (28). A corrugated leaf spring (32) is fixed to a rear surface of the front end of the handle (18), so as to have its peak portion (32a) engage with a trough portion (28b) of the corrugated surface (28) of the push button (24) so that the push button (24) is held in a depressed position, whereby an engaging hook portion (29) of the push button (24) is held in its retracted position free from a receiving portion (5) of the casing (1 ).
    Type: Grant
    Filed: February 16, 1994
    Date of Patent: September 19, 1995
    Assignee: Takigen Manufacturing Co., Ltd.
    Inventors: Takanobu Esaki, Kenichi Yamada
  • Patent number: 5450735
    Abstract: A door locking handle assembly of pull-out and side-swinging lever-action type, including a locking shaft 11, to which a catch plate 36 is fixed, is inserted in a cylindrical portion 2 of a casing 1, a retractable handle 19 received in the casing 1 is pivoted to the shaft 11 through a pivot 35, a spring-support plate 29 is axially slidably mounted on the shaft 11 but not rotatable relative to the shaft 11, a spring 37 urges the plate 29 toward a front-end of the shaft 11, wherein a cross-shaped click concave 23 is provided in a bearing surface 22 of the handle 19, and engaged with a corresponding cross-shaped click convex 31 provided in a bearing surface 30 on a front surface of the plate 29 when the handle 19 is projected from the casing 1 and side-swing, so that the handle 19 is held in a position in which a front end 36a of the plate 36 is retracted behind a rear surface 53b of the door 53.
    Type: Grant
    Filed: February 16, 1994
    Date of Patent: September 19, 1995
    Assignee: Takigen Manufacturing Co. Ltd.
    Inventors: Takanobu Esaki, Kenichi Yamada