Patents by Inventor Dai Feng

Dai Feng 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: 10993034
    Abstract: The present disclosure provides a speaker including a housing, a vibration unit received in the housing, a magnetic circuit unit, flexible circuit boards, and conductive terminals. The housing includes an upper cover and a holder. The housing includes an upper cover and a holder. The holder includes a holder body and extension portions extending from the holder body. The extension portion includes a groove formed by inwardly recessing from a side surface of the extension portion facing away from the receiving space, and a through hole formed by recessing from a top end of the extension portion and communicating with the groove. One end of the flexible circuit board is received in the groove, and the conductive terminal passes through the through hole to be fixedly connected to the flexible circuit board. The present disclosure also provides a method for manufacturing the speaker.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: April 27, 2021
    Assignee: AAC Technologies Pte. Ltd.
    Inventor: Dai Feng
  • Patent number: 10979816
    Abstract: Provided is a speaker, including a holder, a vibration unit, and a magnetic circuit unit. The vibration unit includes a first diaphragm and a voice coil, and the voice coil includes a voice coil lead wire. A centering support is sandwiched between the first diaphragm and the voice coil, and includes a first pad portion. The magnetic circuit unit has a recessed portion formed at a position corresponding to the first pad portion. In the speaker provided by the present disclosure, the magnetic circuit unit is provided with the recessed portion to increase the distance between the magnetic circuit unit and the first pads, so that the vibration amplitude of the voice coil can be increased, thereby improving the acoustic performance of the speaker, and providing operating space for the subsequent welding process.
    Type: Grant
    Filed: July 30, 2019
    Date of Patent: April 13, 2021
    Assignee: AAC Technologies Pte. Ltd.
    Inventor: Dai Feng
  • Patent number: 10924862
    Abstract: The present disclosure provides a micro sound device. The micro sound device includes a basket having an accommodating space, a vibration system secured to the basket, and a magnetic circuit system accommodated in the basket and configured to drive the vibration system to vibrate and produce sound. The vibration system includes an upper diaphragm secured to the basket, a voice coil located below the upper diaphragm and configured to drive the upper diaphragm to vibrate and produce sound, and a support apparatus elastically supporting the voice coil. The support apparatus is disposed opposite to the upper diaphragm and separately from the upper diaphragm. The magnetic circuit system includes an upper clamping plate secured to the basket. One end of the support apparatus is fixed to one side of the upper clamping plate and the other end of the support apparatus is fixed to the voice coil.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: February 16, 2021
    Assignee: AAC Acoustic Technologies (Shenzhen) Co., Ltd.
    Inventors: Jiasheng Zhou, Dai Feng, Chenliang Kong
  • Patent number: 10827278
    Abstract: The speaker of the present disclosure comprises a frame having a receiving space, a vibration system and a magnet circuit system received in the frame. The magnet circuit system comprises a lower magnetic plate, a magnet attached on the lower magnetic plate and a pole plate attached on the magnet, wherein the pole plate comprises a main body portion and a bending portion bend along a direction from an edge of the main body portion toward the lower magnetic plate, the surface of the magnet attached to the main body portion is recessed to form a recessed portion, and the bending portion is received in the recessed portion. Compared with the related art, the speaker of the present disclosure improves the performance and the competitiveness of the product.
    Type: Grant
    Filed: August 5, 2019
    Date of Patent: November 3, 2020
    Assignee: AAC Technologies Pte. Ltd.
    Inventors: Chenliang Kong, Dai Feng
  • Patent number: 10820107
    Abstract: A speaker includes a frame having a receiving space, a vibration unit received in the receiving space, and a magnetic circuit unit for driving the vibration unit to vibrate and emit sound. The vibration unit includes a first diaphragm configured to vibrate and emit sound, and a voice coil for driving the first diaphragm to vibrate and emit sound. The speaker further includes a centering support sandwiched between the first diaphragm and the voice coil. In the speaker according to the present disclosure, by sandwiching the centering support between the voice coil and the first diaphragm, a positional conflict between the centering support and the main magnet is avoided, the main magnet can have an increased size, thereby enhancing the space utilization and sensitivity of the speaker, and improving the acoustic performance of the speaker.
    Type: Grant
    Filed: July 30, 2019
    Date of Patent: October 27, 2020
    Assignee: AAC Technologies Pte. Ltd.
    Inventor: Dai Feng
  • Publication number: 20200053480
    Abstract: The speaker of the present disclosure comprises a frame having a receiving space, a vibration system and a magnet circuit system received in the frame. The magnet circuit system comprises a lower magnetic plate, a magnet attached on the lower magnetic plate and a pole plate attached on the magnet, wherein the pole plate comprises a main body portion and a bending portion bend along a direction from an edge of the main body portion toward the lower magnetic plate, the surface of the magnet attached to the main body portion is recessed to form a recessed portion, and the bending portion is received in the recessed portion. Compared with the related art, the speaker of the present disclosure improves the performance and the competitiveness of the product.
    Type: Application
    Filed: August 5, 2019
    Publication date: February 13, 2020
    Inventors: Chenliang Kong, Dai Feng
  • Publication number: 20200045445
    Abstract: A speaker includes a frame having a receiving space, a vibration unit received in the receiving space, and a magnetic circuit unit for driving the vibration unit to vibrate and emit sound. The vibration unit includes a first diaphragm configured to vibrate and emit sound, and a voice coil for driving the first diaphragm to vibrate and emit sound. The speaker further includes a centering support sandwiched between the first diaphragm and the voice coil. In the speaker according to the present disclosure, by sandwiching the centering support between the voice coil and the first diaphragm, a positional conflict between the centering support and the main magnet is avoided, the main magnet can have an increased size, thereby enhancing the space utilization and sensitivity of the speaker, and improving the acoustic performance of the speaker.
    Type: Application
    Filed: July 30, 2019
    Publication date: February 6, 2020
    Inventor: Dai Feng
  • Publication number: 20200045446
    Abstract: Provided is a speaker, including a holder, a vibration unit, and a magnetic circuit unit. The vibration unit includes a first diaphragm and a voice coil, and the voice coil includes a voice coil lead wire. A centering support is sandwiched between the first diaphragm and the voice coil, and includes a first pad portion. The magnetic circuit unit has a recessed portion formed at a position corresponding to the first pad portion. In the speaker provided by the present disclosure, the magnetic circuit unit is provided with the recessed portion to increase the distance between the magnetic circuit unit and the first pads, so that the vibration amplitude of the voice coil can be increased, thereby improving the acoustic performance of the speaker, and providing operating space for the subsequent welding process.
    Type: Application
    Filed: July 30, 2019
    Publication date: February 6, 2020
    Inventor: Dai Feng
  • Publication number: 20200045441
    Abstract: The present disclosure provides a speaker including a housing, a vibration unit received in the housing, a magnetic circuit unit, flexible circuit boards, and conductive terminals. The housing includes an upper cover and a holder. The housing includes an upper cover and a holder. The holder includes a holder body and extension portions extending from the holder body. The extension portion includes a groove formed by inwardly recessing from a side surface of the extension portion facing away from the receiving space, and a through hole formed by recessing from a top end of the extension portion and communicating with the groove. One end of the flexible circuit board is received in the groove, and the conductive terminal passes through the through hole to be fixedly connected to the flexible circuit board. The present disclosure also provides a method for manufacturing the speaker.
    Type: Application
    Filed: July 31, 2019
    Publication date: February 6, 2020
    Inventor: Dai Feng
  • Publication number: 20200045434
    Abstract: The present disclosure provides a micro sound device. The micro sound device includes a basket having an accommodating space, a vibration system secured to the basket, and a magnetic circuit system accommodated in the basket and configured to drive the vibration system to vibrate and produce sound. The vibration system includes an upper diaphragm secured to the basket, a voice coil located below the upper diaphragm and configured to drive the upper diaphragm to vibrate and produce sound, and a support apparatus elastically supporting the voice coil. The support apparatus is disposed opposite to the upper diaphragm and separately from the upper diaphragm. The magnetic circuit system includes an upper clamping plate secured to the basket. One end of the support apparatus is fixed to one side of the upper clamping plate and the other end of the support apparatus is fixed to the voice coil.
    Type: Application
    Filed: July 31, 2019
    Publication date: February 6, 2020
    Inventors: Jiasheng Zhou, Dai Feng, Chenliang Kong
  • Publication number: 20120015765
    Abstract: A table tennis paddle including a blade and a handle has a handle structure that facilitates a grip with a natural inclination angle of about 45° and allows easy adjustment of inclination angle of a paddle blade to an incoming ball over a 0° to 90° range. A natural angle is the angle achieved when a player positions a paddle in the ball striking position without adjusting the angle of the paddle. A handle has a high aspect ratio A of width to thickness. For example, A?2. A method of using a paddle is provided wherein widthwise ends of the handle abut selected portions of the surfaces between the thumb and the index finger in order to facilitate improved ability to select a forehand or backhand stroke and control motion of a ball struck by the paddle.
    Type: Application
    Filed: July 14, 2010
    Publication date: January 19, 2012
    Inventor: Dai Feng
  • Patent number: 6445523
    Abstract: A storage media is disclosed and comprises a storage body and a readable indelible mark formed in the body such that portions thereof are indelibly altered. The mark is read by writing first data to the body in the region of the mark, and reading second data from the body in such region. The written first data is not accepted where the portions of the body are indelibly altered. Accordingly, the read second data corresponds to the written first data with segments thereof missing. The missing segments of the first data correspond to the portions of the body indelibly altered. In a preferred embodiment, the storage media comprises a magnetic rotatable disk having a substantially planar substrate and a magnetizable layer deposited thereon. The reading and writing are therefore performed magnetically.
    Type: Grant
    Filed: May 25, 2001
    Date of Patent: September 3, 2002
    Assignee: Iomega Corporation
    Inventors: Fred C. Thomas, III, Refael Bar, Daniel Alfonsi, Dai Feng, Jeff G. Carter, Charlie M. Monroe, Jr., Ronald F. Hales, George T. Krieger
  • Patent number: 6320717
    Abstract: A head loading apparatus for a disk drive device is disclosed that limits the velocity of the heads during loading of the heads onto the surface of a data storage medium. The apparatus is characterized by varying a voice coil current or voltage during the head loading process. The varying current or voltage nudges read-write heads off of a load ramp and onto the surface of a data storage medium.
    Type: Grant
    Filed: October 30, 1998
    Date of Patent: November 20, 2001
    Assignee: Iomega Corporation
    Inventor: Dai Feng
  • Patent number: 6317284
    Abstract: A head loading and parking apparatus for a disk drive device is disclosed that is characterized by varying a voice coil current and voltage during a head loading process. The varying voltage nudges read-write heads off of a load ramp and onto the surface of a data storage medium. Peak power is controlled by selectively turning off portions of the electronic system.
    Type: Grant
    Filed: October 30, 1998
    Date of Patent: November 13, 2001
    Assignee: Iomega Corporation
    Inventors: Dai Feng, Daniel Alfonsi
  • Publication number: 20010024337
    Abstract: A storage media is disclosed and comprises a storage body and a readable indelible mark formed in the body such that portions thereof are indelibly altered. The mark is read by writing first data to the body in the region of the mark, and reading second data from the body in such region. The written first data is not accepted where the portions of the body are indelibly altered. Accordingly, the read second data corresponds to the written first data with segments thereof missing. The missing segments of the first data correspond to the portions of the body indelibly altered. In a preferred embodiment, the storage media comprises a magnetic rotatable disk having a substantially planar substrate and a magnetizable layer deposited thereon. The reading and writing are therefore performed magnetically.
    Type: Application
    Filed: May 25, 2001
    Publication date: September 27, 2001
    Applicant: Iomega Corporation
    Inventors: Fred C. Thomas, Refael Bar, Daniel Alfonsi, Dai Feng, Jeff G. Carter, Charlie M. Monroe, Ronald F. Hales, George T. Krieger
  • Patent number: 6259575
    Abstract: A storage media is disclosed and comprises a storage body and a readable indelible mark formed in the body such that portions thereof are indelibly altered. The mark is read by writing first data to the body in the region of the mark, and reading second data from the body in such region. The written first data is not accepted where the portions of the body are indelibly altered. Accordingly, the read second data corresponds to the written first data with segments thereof missing. The missing segments of the first data correspond to the portions of the body indelibly altered. In a preferred embodiment, the storage media comprises a magnetic rotatable disk having a substantially planar substrate and a magnetizable layer deposited thereon. The reading and writing are therefore performed magnetically.
    Type: Grant
    Filed: September 9, 1998
    Date of Patent: July 10, 2001
    Assignee: Iomega Corporation
    Inventors: Fred C. Thomas, III, Refael Bar, Daniel Alfonsi, Dai Feng, Jeff G. Carter, Charlie M. Monroe, Jr., Ronald F. Hales, George T. Krieger
  • Patent number: 6180430
    Abstract: A method of fabricating an LCD-on-silicon device, comprising the following steps. A semiconductor structure having a control transistor formed therein is provided. The control transistor having a source and a drain. An interlevel dielectric (ILD) layer over the semiconductor structure is provided. Source/drain (S/D) plugs contacting the source and drain through contact openings in said ILD layer are provided. M1 lines are formed over the ILD layer and connected to at least the S/D plugs. An M1 intermetal dielectric (IMD) layer is deposited and patterned over the M1 lines to form M1 contact openings exposing at least some of the M1 metal lines. M1 metal plugs are formed within the M1 contact openings and M2 metal islands connected to, and integral with, at least the M1 metal plugs. The M2 metal islands having exposed side walls. Sidewall spacers are formed on the exposed M2 metal islands side walls.
    Type: Grant
    Filed: December 13, 1999
    Date of Patent: January 30, 2001
    Assignee: Chartered Semiconductor Manufacturing Ltd.
    Inventors: Sik On Kong, Dai Feng, Yung-Tao Lin, Robert Chin Fu Tsai