Patents by Inventor Yasutoshi Kaku
Yasutoshi Kaku 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: 5399821Abstract: A push-button switch keytop includes a flexible resin film deformed in such a manner that the resin film bulges upwardly to form a curved portion that is filled with a molding resin while the resin film is being deformed. The molding resin is allowed to harden to form a keytop body, whereby the top side of the keytop body consisting of the molding resin is integrated with the resin film in a state in which the top side of the keytop body is covered by the resin film. The keytop is manufactured by clamping a resin film between upper and lower molds, charging a molten resin from a pin gate provided on the lower mold into a cavity provided in the lower mold, thereby deforming and urging the resin film upward by pressure and heat produced by the molten resin and causing the resin film to adhere to the inner surface of the upper mold, filling the cavities of the upper and lower molds with the molten resin and separating the upper and lower molds after the resin hardens.Type: GrantFiled: October 20, 1993Date of Patent: March 21, 1995Assignee: Teikoku Tsushin Kogyo Co., Ltd.Inventors: Jiro Inagaki, Atsushi Hari, Nobuyuki Yagi, Yasutoshi Kaku, Takashi Shinoki
-
Patent number: 5362934Abstract: The keytop of a push-button switch includes a keytop portion situated on the top of a resin film, and a retaining portion situated on the underside of the resin film. The keytop portion and retaining portion are formed into a unitary body by a resin-molding process in which resin is passed through a hole provided in the resin film such that the resin film is sandwiched between the keytop portion and the retaining portion. In another embodiment, the retaining portion is loop-shaped and is formed into a unitary body with the keytop portion by a resin-molding process in which the resin passes through a plurality of holes provided in the resin film in a pattern corresponding to the loop-shaped circumference of the retaining portion. The resin film is sandwiched in a water-tight state between the keytop portion and the loop-shaped retaining portion.Type: GrantFiled: April 14, 1993Date of Patent: November 8, 1994Assignee: Teikoku Tsushin Kogyo Co., Ltd.Inventors: Jiroh Inagaki, Atsushi Hari, Nobuyuki Yagi, Yasutoshi Kaku, Takashi Shinoki
-
Patent number: 5362932Abstract: The keytop of a push-button switch includes a keytop portion situated on the top of a resin film, and a retaining portion situated on the underside of the resin film. The keytop portion and retaining portion are formed into a unitary body by a resin-molding process in which resin is passed through a hole provided in the resin film such that the resin film is sandwiched between the keytop portion and the retaining portion. In another embodiment, the retaining portion is loop-shaped and is formed into a unitary body with the keytop portion by a resin-molding process in which the resin passes through a plurality of holes provided in the resin film in a pattern corresponding to the loop-shaped circumference of the retaining portion. The resin film is sandwiched in a water-tight state between the keytop portion and the loop-shaped retaining portion.Type: GrantFiled: October 12, 1993Date of Patent: November 8, 1994Assignee: Teikoku Tsushin Kogyo Co., Ltd.Inventors: Jiroh Inagaki, Atsushi Hari, Nobuyuki Yagi, Yasutoshi Kaku, Takashi Shinoki
-
Patent number: 5309316Abstract: A terminal structure includes a portion of a flexible printed circuit board and a plurality of metal terminals each consisting of a slender, elongate metal plate. The circuit board has a plurality of electrically conductive patterns provided on a resin film, a prescribed portion of the board having a connector insertion portion of a width substantially the same as that of an insertion hole of a connector. The plurality of metal terminals are placed in parallel on the flexible printed circuit board in such a manner that distal ends thereof are situated adjacent a distal end of the connector insertion portion, and each metal terminal is fixedly bonded to a respective one of the electrically conductive patterns provided on the flexible printed circuit board.Type: GrantFiled: September 28, 1992Date of Patent: May 3, 1994Assignee: Teikoku Tsushin Kogyo Co., Ltd.Inventors: Nobuyuki Yagi, Yasutoshi Kaku
-
Patent number: 5280146Abstract: The keytop of a push-button switch includes a keytop portion situated on the top of a resin film, and a retaining portion situated on the underside of the resin film. The keytop portion and retaining portion are formed into a unitary body by a resin-molding process in which resin is passed through a hole provided in the resin film such that the resin film is sandwiched between the keytop portion and the retaining portion. In another embodiment, the retaining portion is loop-shaped and is formed into a unitary body with the keytop portion by a resin-molding process in which the resin passes through a plurality of holes provided in the resin film in a pattern corresponding to the loop-shaped circumference of the retaining portion. The resin film is sandwiched in a water-tight state between the keytop portion and the loop-shaped retaining portion.Type: GrantFiled: October 29, 1991Date of Patent: January 18, 1994Assignee: Teikoku Tsushin Kogyo Co., Ltd.Inventors: Jiroh Inagaki, Atsushi Hari, Nobuyuki Yagi, Yasutoshi Kaku, Takashi Shinoki
-
Patent number: 5071611Abstract: A molded resin casing of an electronic part equipped with a flat cable and internally accommodating a board on which are formed electric conductor patterns slidingly contacted by contacts of a slider of the electronic part. A flexible board having various electric conductor patterns formed on a synthetic resin film is used as the board, the flexible board is formed integral with a flat cable including a synthetic resin film on which are formed electric conductor patterns electrically connected to the aforementioned various electric conductor patterns, and when the molded resin casing is molded by injecting a molten synthetic resin, the flexible board is inserted in such a manner that the electric conductor patterns are exposed within the casing, thereby integrating the flexible board and synthetic resin casing, with the flat cable extending outwardly from a side portion of the synthetic resin casing.Type: GrantFiled: December 7, 1989Date of Patent: December 10, 1991Assignee: Teikoku Tsuhin Kogyo Co., Ltd.Inventors: Nobuyuki Yagi, Jiroh Inagaki, Kozo Morita, Yasutoshi Kaku, Nobuyuki Kikuchi, Shinji Mizuno
-
Patent number: 4978491Abstract: Disclosed is a molded resin casing of a rotary- or sliding-type electronic part internally accommodating a board on which are formed electric conductor patterns slidingly contacted by contacts of a slider of the electronic part, wherein a flexible board having the electric conductor patterns formed on a film comprising a synthetic resin material is used as the board, and the flexible board is inserted inside the synthetic resin casing in such a manner that the electric conductor patterns are exposed to the interior of the casing.Type: GrantFiled: September 13, 1988Date of Patent: December 18, 1990Assignee: Teikoku Tsushin Kogyo Co., Ltd.Inventors: Nobuyuki Yagi, Jiroh Inagaki, Kozo Morita, Yasutoshi Kaku, Nobuyuki Kikuchi, Shinji Mizuno
-
Patent number: 4935718Abstract: A molded resin casing of a rotary- or sliding-type electronic part internally accommodating a board on which are formed electric conductor patterns slidingly contacted by contacts of a slider of the electronic part, wherein a flexible board having the electric conductor patterns formed on a film comprising a synthetic resin material is used as the board, and the flexible board is inserted inside the synthetic resin casing in such as manner that the electric conductor patterns are exposed to the interior of the casing.Type: GrantFiled: August 22, 1988Date of Patent: June 19, 1990Assignee: Teikoku Tsushin Kogyo Co., Ltd.Inventors: Nobuyuki Yagi, Jiroh Inagaki, Kozo Morita, Yasutoshi Kaku, Nobuyuki Kikuchi, Shinji Mizuno
-
Patent number: 4928082Abstract: A molded resin casing of an electronic part equipped with a flexible flat cable and internally accommodating a board on which are formed electric conductor patterns slidingly contacted by contacts of a slider of the electronic part, includes a flexible board having various electric conductor patterns formed on a synthetic resin film used as the board. The flexible board is formed integrally with a flexible flat cable comprising a synthetic resin film on which are formed electric conductor patterns electrically connected to the aforementioned various electric conductor patterns. When the molded resin casing is molded by injecting a molten synthetic resin, the flexible board is inserted in such a manner that the electric conductor patterns are exposed within the casing, thereby integrating the flexible board and synthetic resin casing, with the flexible flat cable extending outwardly from a side portion of the synthetic resin casing.Type: GrantFiled: August 22, 1988Date of Patent: May 22, 1990Assignee: Teikoku Tsushin Kogyo Co., Ltd.Inventors: Nobuyuki Yagi, Jiro Inagaki, Kozo Morita, Yasutoshi Kaku, Nobuyuki Kikuchi, Shinji Mizuno