Patents by Inventor Tetsuhiko Miyoshi
Tetsuhiko Miyoshi 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).
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Patent number: 10256056Abstract: A switch device has a circuit unit that forms an electric circuit that detects at least one of disconnection and a short circuit of a wiring connecting an external device and the switch device, two terminals connected to the electric circuit, and configured to be connected to the wiring, a contact mechanism that moves in a movable direction to switch on and off of a contact of the electric circuit, and a circuit board on which the circuit unit, the two terminals, and the contact mechanism are disposed. The electric circuit comprises at least one resistive element. The circuit unit and the contact mechanism are disposed on an identical surface side of the circuit board. The resistive element is disposed in a direction perpendicular to the movable direction of the contact mechanism when viewed from at least a part of a movable range of the contact mechanism.Type: GrantFiled: September 25, 2015Date of Patent: April 9, 2019Assignee: Omron CorporationInventors: Tetsuhiko Miyoshi, Kenji Kuroki
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Publication number: 20160099119Abstract: A switch device has a circuit unit that forms an electric circuit that detects at least one of disconnection and a short circuit of a wiring connecting an external device and the switch device, two terminals connected to the electric circuit, and configured to be connected to the wiring, a contact mechanism that moves in a movable direction to switch on and off of a contact of the electric circuit, and a circuit board on which the circuit unit, the two terminals, and the contact mechanism are disposed. The electric circuit comprises at least one resistive element. The circuit unit and the contact mechanism are disposed on an identical surface side of the circuit board. The resistive element is disposed in a direction perpendicular to the movable direction of the contact mechanism when viewed from at least a part of a movable range of the contact mechanism.Type: ApplicationFiled: September 25, 2015Publication date: April 7, 2016Applicant: OMRON CorporationInventors: Tetsuhiko Miyoshi, Kenji Kuroki
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Patent number: 6774329Abstract: A switch unit is provided which is free from causing contact damage even in case applied to a high power voltage, whose switch unit is not greatly increased in size. Switches A and B are to take a motor stop status, a motor forward rotation status and a motor reverse rotation status. A switch C is to electrically connecting and disconnecting between the switches A and B and the power source. This switch C, when the switches A and B transits from the motor forward rotation status or motor reverse rotation status into the motor stop status, is operated from a connection state to a disconnection state at a time of any of completing the transition to the motor stop status and prior to a predetermined marginal period of time.Type: GrantFiled: October 8, 2003Date of Patent: August 10, 2004Assignee: Omron CorporationInventors: Keiichi Shimizu, Yasuhide Tanaka, Tetsuhiko Miyoshi
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Publication number: 20040112731Abstract: A switch unit is provided which is free from causing contact damage even in case applied to a high power voltage, whose switch unit is not greatly increased in size. Switches A and B are to take a motor stop status, a motor forward rotation status and a motor reverse rotation status. A switch C is to electrically connecting and disconnecting between the switches A and B and the power source. This switch C, when the switches A and B transits from the motor forward rotation status or motor reverse rotation status into the motor stop status, is operated from a connection state to a disconnection state at a time of any of completing the transition to the motor stop status and prior to a predetermined marginal period of time.Type: ApplicationFiled: October 8, 2003Publication date: June 17, 2004Inventors: Keiichi Shimizu, Yasuhide Tanaka, Tetsuhiko Miyoshi
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Patent number: 6720508Abstract: A switch includes a switching mechanism, an operating mechanism with a key which normally causes the switching mechanism to be in a switched-off condition when it is pulled out and to be displaced against a biasing force to be in a switched-on condition when the key is inserted, and a locking mechanism for maintaining the switching mechanism locked in the switched-on condition and releasing it from the locked condition if a load greater than a specified magnitude is applied to the key while the switching mechanism is locked such that the switching mechanism is set back in the switched-off condition. The switching mechanism may be contained in a head case attached to a main case containing the operating mechanism. The main case also includes a forcing mechanism which tends to force the switching mechanism in the switched-off condition.Type: GrantFiled: June 17, 2002Date of Patent: April 13, 2004Assignee: Omron CorporationInventors: Hiroyuki Moriyama, Shingo Akiyama, Takashi Niwa, Sueaki Honda, Minoru Yoshii, Hiroyuki Kajio, Hidemitsu Takenaka, Kazuki Kawata, Tetsuhiko Miyoshi
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Patent number: 6664487Abstract: A limit switch has switch areas and a partition wall in between in a switch case for containing switch element units separately and independently. An inner case includes covers for sealing the switch areas. For improving rigidity, a switch unit and a head unit which operates the switch unit are connected by means of a protrusion on one of them and an indentation on the other of them, the protrusion and the indentation being engaged in an embracing fashion for strength.Type: GrantFiled: June 24, 2002Date of Patent: December 16, 2003Assignee: Omron CorporationInventors: Hidemitsu Takenaka, Hiroyuki Kaijo, Tetsuhiko Miyoshi
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Publication number: 20030010614Abstract: A limit switch has switch areas and a partition wall in between in a switch case for containing switch element units separately and independently. An inner case includes covers for sealing the switch areas. For improving rigidity, a switch unit and a head unit which operates the switch unit are connected by means of a protrusion on one of them and an indentation on the other of them, the protrusion and the indentation being engaged in an embracing fashion for strength.Type: ApplicationFiled: June 24, 2002Publication date: January 16, 2003Inventors: Hidemitsu Takenaka, Hiroyuki Kaijo, Tetsuhiko Miyoshi
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Publication number: 20030005732Abstract: A switch includes a switching mechanism, an operating mechanism with a key which normally causes the switching mechanism to be in a switched-off condition when it is pulled out and to be displaced against a biasing force to be in a switched-on condition when the key is inserted, and a locking mechanism for maintaining the switching mechanism locked in the switched-on condition and releasing it from the locked condition if a load greater than a specified magnitude is applied to the key while the switching mechanism is locked such that the switching mechanism is set back in the switched-off condition. The switching mechanism may be contained in a head case attached to a main case containing the operating mechanism. The main case also includes a forcing mechanism which tends to force the switching mechanism in the switched-off condition.Type: ApplicationFiled: June 17, 2002Publication date: January 9, 2003Inventors: Hiroyuki Moriyama, Shingo Akiyama, Takashi Niwa, Sueaki Honda, Minoru Yoshii, Hiroyuki Kajio, Hidemitsu Takenaka, Kazuki Kawata, Tetsuhiko Miyoshi