公开(公告)号：US20190333362A1

公开(公告)日：2019-10-31

申请号：US16386807

申请日：2019-04-17

Applicant: Defond Electech Co., Ltd. ,  Defond Components Limited

Inventor： Massimo Fontanili

IPC: G08B25/01

Abstract: A warning device for use with a computerised warning system, the warning device including: a securement mechanism configured for arrangement between at least one of a secured configuration wherein the securement mechanism is configured to secure the warning device to a person's body, or to an item of clothing or accessory worn or carried on the person's body, and, an unsecured configuration wherein the securement mechanism is configured to allow release of the warning device from securement to the person's body, or to the item of clothing or accessory worn or carried on the person's body; a sensor module configured for sensing when the securement mechanism has been arranged in to the unsecured configuration, and, for sensing at least one type of interaction with the warning device when the securement mechanism has been arranged in the unsecured configuration; and a communication module communicably-connected with a computer server of the computerised system and configured for communicating information to the computer server indicative of the securement mechanism being arranged in to the unsecured configuration and indicative of the at least one type of interaction with the warning device that is sensed by the sensor module, and whereby in response to receiving the information form the communication module, the computer server is configured for communicating a predetermined warning message corresponding to the received information.

公开(公告)号：US20190302904A1

公开(公告)日：2019-10-03

申请号：US16366871

申请日：2019-03-27

Applicant: Defond Electech Co., Ltd ,  Defond Components Limited

Inventor： Cheng Chen NIEH ,  Kai Kei POON ,  Ka Leung LUK

IPC: G06F3/0362 ,  H01H19/14 ,  G06F3/044

Abstract: A control system for use in controlling operation of an electrical appliance, the system including: a processor module disposed inside of a housing of the electrical appliance, said processor module including at least one contactless-type sensor operably-connected with the processor module; an input control module including: an attachment element configured for releasably attaching the input control module to an outer surface of the housing; and at least one sensor-readable element configured for contactless-interaction with the contactless-type sensor; wherein said at least one sensor-readable element of the input control module is configured for movement into a plurality of different positions relative to the at least one contactless-type sensor of the processor module disposed inside the housing, whereby responsive to said movement of the at least one sensor-readable element into the plurality of different positions relative to the at least one contactless-type sensor, the contactless-type sensor is configured to sense a plurality of different readings from the sensor-readable element, and, said processor module is configured for controlling the electrical appliance to operate in a plurality of different operational modes by reference to the plurality of different readings sensed by the contactless-type sensor.

公开(公告)号：US10283291B2

公开(公告)日：2019-05-07

申请号：US15684662

申请日：2017-08-23

Applicant: DEFOND ELECTECH CO., LTD ,  DEFOND COMPONENTS LIMITED

Inventor： Kai Kei Poon

IPC: H01H23/06 ,  H01H23/14

Abstract: Provided is a waterproof toggle switch, which includes a panel, a shift lever, a fixed contact and an elastic element. The panel is provided with an opening portion, with the opening portion running through the panel, between a front wall surface and a rear wall surface of the panel. The shift lever is rotatably held in the opening portion of the panel, and the shift lever includes a rotation center portion, a driving portion and an operation portion. A fit clearance between the rotation center portion and the opening portion ranges from 0.02 mm to 0.2 mm. By providing the panel with the opening portion and providing the shift lever with the rotation center portion, and by controlling the fit clearance between the opening portion and the rotation center portion, a waterproof toggle switch having superperformance and a low cost is provided.

公开(公告)号：US20190089277A1

公开(公告)日：2019-03-21

申请号：US16101408

申请日：2018-08-11

Applicant: DEFOND ELECTECH CO., LTD. ,  Defond Components Limited

Inventor： Cheng Chen NIEH ,  Wai Man WONG ,  Ming Leong KONG ,  Pat On KWOK

IPC: H02P7/29 ,  H02P1/18 ,  H03K17/687 ,  H03K17/0412

Abstract: An electrical switch unit for use with an electrical device to control operation of a DC motor of the electrical device, the electrical switch unit comprising: a housing which houses a pair of electrical switching contacts, and, an actuator operably connected with at least one of the pair of electrical switching contacts, the actuator being configured for movement relative to the pair of electrical switching contacts so as to arrange the pair of electrical switching contacts into at least one of a closed configuration wherein power is able to be supplied from the DC power source to the DC motor via the pair of electrical switching contacts, and, an opened configuration wherein power is not able to be supplied from the DC power source to the DC motor via the pair of electrical switching contacts; a signaling module associated with the electrical switch unit comprising signaling circuitry for sensing the movement of the actuator and outputting a signaling module signal indicative of the sensed movement or position of the actuator; a power module comprising at least one power switching device for controllably supplying power from the DC power source to the DC motor; a control module comprising control circuitry for receiving the signaling module signal, and responsive to the received signaling module signal, outputting a control module signal to control the at least one power switching transistor device of the power module wherein the at least one power switching device controllably supplies power from the DC power source to the DC motor to allow operation of the DC motor at a speed corresponding to the sensed movement or position of the actuator; and wherein, the signaling module is integrally connected to a first end of the control module that is located within the electrical switch unit housing to allow relatively direct electrical communication between the pair of electrical switching contacts and the control module, and, whereby the control module is configured to extend outwardly of the electrical switch housing so as to terminate at a distal second end.

公开(公告)号：US20190086945A1

公开(公告)日：2019-03-21

申请号：US16105648

申请日：2018-08-20

Applicant: Defond Components Limited ,  Defond Electech Co., Ltd.

Inventor： Cheng Chen Nieh ,  Hoi Him Ko

IPC: G05G5/06 ,  G05G1/08

Abstract: A transducer device including: a base platform; an annular support member mounted on a surface of the base platform, the annular support member having a first opening positioned adjacent the surface of the base platform and a second opening positioned away from the surface of the base platform along a rotation axis; an inner shaft mounted relative to the base platform and configured to extend away from the second opening of the annular support member and rotate relative to the annular support member about the rotation axis; an inner shaft detent mechanism located at least partially within the annular support member configured for releasably securing the inner shaft in a plurality of rotational positions corresponding to each of a plurality of detent positions of the inner shaft detent mechanism as the inner shaft is rotated about the rotation axis; an outer shaft including a passage extending along an elongate axis thereof configured for receiving the inner shaft therein so that the inner shaft and outer shaft are arranged to rotate concentrically relative to each other about the rotation axis, the outer shaft further including a flanged portion configured for seating upon an outer surface of the annular support member; a PCB unit disposed on the surface of the base platform comprising: a first transducer circuit unit operably coupled to the inner shaft and responsive to rotational movement of the inner shaft about the rotation axis so that the first transducer circuit unit outputs a first electrical signal that is indicative of a rotational position of the inner shaft about the rotational axis; a second transducer circuit unit operably coupled to the outer shaft and responsive to rotational movement of the outer shaft about the rotation axis so that the second transducer circuit unit will output a second electrical signal that is indicative of a rotational position of the outer shaft about the rotational axis; a housing configured for enclosing the first and second transducer circuit units therein and having an opening disposed in a wall of the housing via which ends of the inner and outer shafts may extend outwardly of the housing along the rotation axis; and an outer shaft detent mechanism located between the outer shaft and an inner surface of the housing configured for releasably securing the outer shaft in a plurality of rotational positions corresponding to each of a plurality of detent positions of the outer shaft detent mechanism as the outer shaft is rotated about the rotation axis.

公开(公告)号：US20190084144A1

公开(公告)日：2019-03-21

申请号：US16119150

申请日：2018-08-31

Applicant: Defond Components Limited ,  Defond Electech Co., Ltd.

Inventor： Cheng Chen Nieh ,  Man Kit Mok ,  Kwok Hang Leung ,  Ka Leung Chan

IPC: B25F5/00 ,  B25F5/02 ,  G01L5/22

Abstract: A control assembly for controlling operation of an electric device having an electric motor, the control assembly including: a force sensor; an actuator configured for movement relative to the force sensor between at least one of a first relative position and a second relative position so as to apply at least one of a first amount of force and a second amount of force against the force sensor; and a control module configured for receiving from the force sensor at least a first signal indicative of a first amount of force and a second signal indicative of a second amount of force being applied against the force sensor by the actuator, wherein, the control module is configured for outputting control signals for controlling a speed of the electric motor by reference to the first amount of force and the second amount of force indicated by the received first and second signals.

公开(公告)号：US10121626B2

公开(公告)日：2018-11-06

申请号：US15697734

申请日：2017-09-07

Applicant: DONGGUAN CHEN DA APPLIANCE CO. LTD. ,  DEFOND COMPONENTS LIMITED

Inventor： Wai Man Wong

IPC: H01H73/04 ,  H01H3/04 ,  H01H3/46 ,  H01H1/20 ,  H01H3/38 ,  H02H3/08

Abstract: An electrical switch includes a fixed electrical contact; a movable electrical contact which is moveable relative to thereto between an ON position in contact with and, an OFF position out of contact with, the fixed electrical contact; a contact mover movably coupled to a terminal member moveable relative thereto so as to move the movable electrical contact between the ON and OFF positions; a biasing member coupling the contact mover and the terminal member together such that said biasing member acts upon the contact mover as the contact mover moves the movable electrical contact relative to the fixed electrical contact between the ON and OFF positions; wherein in the ON position, electrical current flows along a path comprising the terminal member, contact mover and movable electrical contact in series, and, an electrical insulation member arranged in series with the biasing member between the contact mover and the terminal member.

公开(公告)号：US20180164903A1

公开(公告)日：2018-06-14

申请号：US15808072

申请日：2017-11-09

Applicant: Dongguan Chen Da Appliance Co. Ltd ,  Defond Components Limited

Inventor： Wai Cheong Wilson Chu ,  Tak Chuen Richard Or

IPC: G06F3/0362 ,  G06F3/0488 ,  G06F3/0482

CPC classification number: G06F3/0362 ,  B60K37/06 ,  B60K2370/126 ,  B60K2370/128 ,  B60K2370/1438 ,  B60K2370/152 ,  B60K2370/1537 ,  G06F3/016 ,  G06F3/03547 ,  G06F3/0383 ,  G06F3/0482 ,  G06F3/0488 ,  G06F3/167 ,  H01H9/181 ,  H01H25/06 ,  H01H25/065 ,  H01H2013/525 ,  H03K17/96

Abstract: A control knob for controlling operation of a machine, the control knob including: an attachment member configured for attaching the control knob to a surface of the machine so that the control knob is operably connectable with the machine to control operation thereof; a display member comprising an electronic display module disposed thereon; an operational mode display controller for controlling display of operational modes of the machine upon the electronic display module, said operational mode display controller being configured for rotational movement around the electronic display module amongst a plurality of rotational positions, said operational mode display controller being operably connected with the electronic display module such that, responsive to the rotational movement of the operational mode display controller amongst the plurality of rotational positions, the electronic display module is configured to display a plurality of operational modes of the machine corresponding to the plurality of rotational positions; and an operational mode selector for controlling selection of one of the plurality of operational modes of the machine when said one of the plurality of operational modes is displayed on the electronic display module, the operational mode selector being configured for movement between at least a first position and a second position to actuate selection of the operational mode displayed on the electronic display module.

公开(公告)号：US09932728B2

公开(公告)日：2018-04-03

申请号：US14600455

申请日：2015-01-20

Applicant: Defond Components Limited

Inventor： Kwok Chiu Yu

IPC: E03D1/06 ,  E03D1/35 ,  E03D5/02 ,  E03D5/10 ,  E03D5/01

CPC classification number: E03D1/35 ,  E03D5/01 ,  E03D5/024 ,  E03D5/105 ,  Y02A20/412

Abstract: A flush valve assembly for use in a toilet tank that has a drain opening, a valve seat at the drain opening, and a valve member movable relative to the valve seat, together acting as a flush valve. The valve member has an internal chamber for containing water to reduce buoyancy of the valve member in water, so that the valve member may descend through water to reach the valve seat for sealing engagement with the valve seat. The valve member has an inlet for admitting water into the chamber, and an outlet for discharging water from the chamber. A toilet flush system includes the toilet tank, a tank refill mechanism for refilling the toilet tank with water, the flush valve assembly in the toilet tank, and an operating unit for operating the flush valve assembly.

公开(公告)号：US09663933B2

公开(公告)日：2017-05-30

申请号：US14713418

申请日：2015-05-15

Applicant: Defond Components Limited

Inventor： Kai Chi Chan ,  Kwok Chiu Yu ,  Yu Chi Lok

IPC: E03D9/08 ,  F24H1/10

CPC classification number: E03D9/08 ,  F24H1/101

Abstract: A toilet apparatus includes a toilet bowl with a seat, a reservoir for containing water for flushing the toilet bowl, and a water jet device including a conduit with an inlet, an outlet, and a nozzle at the outlet and located in the toilet bowl for generating a water jet to clean a user. A thermoelectric heat pump having a cold side in thermal communication with water in the reservoir extracts heat from the water in the reservoir and a hot side in thermal communication with a conduit section of the conduit supplies heat extracted from water in the reservoir and increases the temperature of water flowing through the conduit.