Patents by Inventor Xiaomao Mao

Xiaomao Mao 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).

  • Publication number: 20170214440
    Abstract: An apparatus and a method are disclosed by which transmit power for each antenna element of an antenna array for beamforming is determined by determining a weight vector including a weight for each antenna element according to a specific beamforming procedure, it is detected whether at least one of the plurality of antenna elements is saturated, wherein an antenna element is saturated when the determined transmit power for this antenna element is higher than a threshold, and, when it is detected that there is at least one saturated antenna element, the transmit power for each antenna element of the antenna array is adjusted such that a part of the transmit power allocated to the at least one saturated antenna element is allocated to at least one antenna element of the antenna array which is not saturated based on the weight vector determined according to the specific beamforming procedure.
    Type: Application
    Filed: August 13, 2014
    Publication date: July 27, 2017
    Inventor: Xiaomao Mao
  • Patent number: 9537304
    Abstract: A surge suppression device comprising a voltage sensitive element, heat sensitive materials, terminals, a blocking element and a non-conductive barrier is disclosed. One of the terminals comprises an arm portion, a contact portion and an extension portion extended from the contact portion. The blocking element has a part engaging with the extension portion and another part contacting with the barrier and separating the barrier from the arm portion of the terminal. The device has higher structural stability and sensitivity and is only failed in the event that the voltage sensitive element is failed due to aging or grid fault.
    Type: Grant
    Filed: November 25, 2014
    Date of Patent: January 3, 2017
    Inventor: Xiaomao Mao
  • Publication number: 20160134104
    Abstract: A surge suppression device comprising a voltage sensitive element, heat sensitive materials, terminals, a blocking element and a non-conductive barrier is disclosed. One of the terminals comprises an arm portion, a contact portion and an extension portion extended from the contact portion. The blocking element has a part engaging with the extension portion and another part contacting with the barrier and separating the barrier from the arm portion of the terminal. The device has higher structural stability and sensitivity and is only failed in the event that the voltage sensitive element is failed due to aging or grid fault.
    Type: Application
    Filed: November 25, 2014
    Publication date: May 12, 2016
    Inventor: Xiaomao MAO
  • Publication number: 20150280420
    Abstract: A surge suppression device is disclosed comprising a voltage sensitive element, heat sensitive materials, a second terminal, and a conductive metal plate, which are substantively connected in parallel with respect to each other, such that a laminated structure is formed. The laminated structure maximizes the contact areas between theses elements, such that a conductive metal plate disposed between the voltage sensitive element and the contact portion of the second terminal is able to absorb and transfer, to the greatest extent, the heat generated by the voltage sensitive element due to over-voltage applied thereon, to the first heat sensitive material, so that an improved sensitivity is achieved.
    Type: Application
    Filed: July 30, 2014
    Publication date: October 1, 2015
    Inventor: Xiaomao MAO
  • Patent number: 8279575
    Abstract: A thermally protected surge suppression device comprises a housing and a base seat with a mounting plate. The base seat is provided with a surge suppression component and a thermal protection device, and the thermal protection device further comprises a metal bulge electrically connecting to the electrode B of the surge suppression component, a compression spring, a slider provided with an arc extinguishing component movable on the guide-track groove. In normal working condition, the conductive metal member electrically connects to the metal bulge via a low temperature solder. When the surge suppression component fails, the low temperature solder is melt owing to being passed through the power frequency fault current, the conductive metal member is disconnected from the metal bulge, the compression spring pushes the arc extinguishing component to move to obstruct the disconnected gap, and form an airflow to extinguish the electric arc between the conductive metal member and the metal bulge.
    Type: Grant
    Filed: May 5, 2010
    Date of Patent: October 2, 2012
    Assignee: Prosurge Electronics Co., Ltd
    Inventors: Xiaomao Mao, Tianyun Wei
  • Publication number: 20110170217
    Abstract: A thermally protected surge suppression device comprises a housing and a base seat with a mounting plate. The base seat is provided with a surge suppression component and a thermal protection device, and the thermal protection device further comprises a metal bulge electrically connecting to the electrode B of the surge suppression component, a compression spring, a slider provided with an arc extinguishing component movable on the guide-track groove. In normal working condition, the conductive metal member electrically connects to the metal bulge via a low temperature solder. When the surge suppression component fails, the low temperature solder is melt owing to being passed through the power frequency fault current, the conductive metal member is disconnected from the metal bulge, the compression spring pushes the arc extinguishing component to move to obstruct the disconnected gap, and form an airflow to extinguish the electric arc between the conductive metal member and the metal bulge.
    Type: Application
    Filed: May 5, 2010
    Publication date: July 14, 2011
    Inventors: Xiaomao MAO, Tianyun Wei