Patents by Inventor Hua Gao

Hua Gao 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: 7740249
    Abstract: A holder for replaceable tools, including a body with an axial opening extending along an axis and for releasably receiving the tools and having two radial openings with balls therein extending into the axial opening. Two ramps are movable on the body and they engage the balls for forcing the balls onto the tool being held in the body and thereby radially and axially stabilize the tool in the body. Two separate springs engage the ramps for movement of the ramps separate from each other.
    Type: Grant
    Filed: May 1, 2006
    Date of Patent: June 22, 2010
    Assignee: Bradshaw Medical, Inc.
    Inventor: Hua Gao
  • Publication number: 20100130413
    Abstract: A method is disclosed for treating diseases or disorders of the eye involving undesired neovascularization by administration of a complement inhibitory protein such as soluble complement receptor type I (sCR1). The present invention relates to the direct treatment of macular degeneration, particularly age-related macular degeneration (AMD), by administering a complement inhibitory protein intraocularly or systemically.
    Type: Application
    Filed: October 19, 2007
    Publication date: May 27, 2010
    Inventors: Henry C. Marsh, Lawrence Thomas, Hua Gao, Xiaoxi Qiao
  • Publication number: 20090301267
    Abstract: A ratchet screwdriver with an assembly of a handle (10), a body (17), a gear (56), a pawl (21, 22, 71), and a selector (27) movable on the assembly. The selector carries a pawl actuator (38, 81) for pivoting the pawl, and there is a rotation lock (42, 92) on the selector for releasably holding the rotated selector. The selector can be axially, and also rotationally, movable on the body for controlling the lock. The assembly is along an axis (A), and there are a member (44) and axial force appliers (62, 64) effective between the body and the member, thus restricting axial movement in the assembly. There is provision for assembly along the axis from adjacent the handle. There are modifications and an assembly method.
    Type: Application
    Filed: May 19, 2006
    Publication date: December 10, 2009
    Inventor: Hua Gao
  • Publication number: 20090286948
    Abstract: This invention puts forward a process of preparing butyl rubber. High gravity devices are used as polymerization reactor. The mixture of isomonoolefin and conjugated diolefin monomers and the diluent, and the mixture of the initiator and diluent are pumped at a certain ratio into a high-gravity reactor to conduct cationic polymerization in the high-gravity environment. After polymerization, the monomers and the diluent are removed from the product to obtain butyl rubber polymers with number-average molecular weight of 80000˜300000 and molecular weight distribution index of 1.9˜3.6. The high gravity polymerization method of this invention can tremendously intensify micro-mixing, mass transfer and heat transfer in the reaction. Compared to the conventional stirred polymerization method, this invention features small reactor volume, at least 30-fold shorter residence time of substances in the high gravity reactor, low cost, low energy consumption and high production efficiency.
    Type: Application
    Filed: July 20, 2007
    Publication date: November 19, 2009
    Inventors: Jian-Feng Chen, Hua Gao, Yi-Xian Wu, Hai-Kui Zou, Guang-Wen Chu, Lei Zhang
  • Publication number: 20090223332
    Abstract: A gripping device comprising a first arm pivotally connected to a second arm. The arms form a gripping area. A linkage mechanism is used for adjusting the inwardly and outwardly movement of the gripping area, with the linkage mechanism pivotally connected to the first arm and second arm. The linkage mechanism is formed of a first linkage laterally and pivotally connected to a second linkage.
    Type: Application
    Filed: March 4, 2009
    Publication date: September 10, 2009
    Inventor: Hua Gao
  • Publication number: 20090205467
    Abstract: A ratcheting assembly for a tool comprising a housing, a gear supported by a hollow shaft located in the housing and a pawl to engage the gear. A ring in contact with the housing allows adjustment of the ratcheting assembly. The assembly can the releasably lock the tool within the ratcheting assembly by way of a locking mechanism located within the shaft. The assembly further has a compressible collar that will be used to release the tool from the ratcheting assembly.
    Type: Application
    Filed: February 20, 2009
    Publication date: August 20, 2009
    Inventor: Hua Gao
  • Patent number: 7516676
    Abstract: A torque limiting and ratcheting driver having a housing and a torque limiting assembly located within the housing. The torque limiting assembly includes a cam member, a plunger, and a roller supported by the plunger that interacts with the cam member. The ratcheting assembly is located interiorly of the cam member.
    Type: Grant
    Filed: May 14, 2007
    Date of Patent: April 14, 2009
    Assignee: Bradshaw Medical, Inc.
    Inventor: Hua Gao
  • Patent number: 7503104
    Abstract: A ratchet screwdriver and method of making same wherein there is a handle and there are a ratchet gear and pawls inside the handle. An adjuster is inside the handle and is movable by a tool extending into the handle for positioning the adjuster relative to the gear and thereby eliminating play between the gear and the handle. Ball bearings are interposed between the handle and the gear and the bearings rotatably support the gear and transmit the anti-play forces that act on the gear.
    Type: Grant
    Filed: December 28, 2006
    Date of Patent: March 17, 2009
    Assignee: Teleflex Medical Incorporated
    Inventors: James A. Rinner, Hua Gao
  • Patent number: 7467576
    Abstract: A clutch assembly for use with a torque limiting driver. The clutch assembly comprises two relatively roatable clutch plates, a driving plate and a camming plate, that face one another, with a plurality of rolling members housed between the two members. When the rolling members are in the override position, the recesses form individual housings for the rolling members that include a gap located between the rolling members and a respective curvilinear base area of the drive plate. The clutch assembly is secured to a drive shaft by a pin, which is supported by a pair of wheels located on opposing sides of the pin.
    Type: Grant
    Filed: July 16, 2007
    Date of Patent: December 23, 2008
    Assignee: Bradshaw Medical, Inc.
    Inventor: Hua Gao
  • Patent number: 7421772
    Abstract: A ratcheting driver for rotationally driving a piece and having a handle and pivotal pawls engageable with a driven gear and being capable of ratcheting and driving in both rotational directions. A cap is rotatable relative to said handle and it has a web for pivoting the pawls out of engagement with the gear. Through the selective rotation of the cap, the setting of the pawls is established. A spring positions the pawls in driving positions, and the cap has surfaces which disengage the pawls from the gear upon rotation of the cap. A method of arranging the driver is included.
    Type: Grant
    Filed: November 16, 2005
    Date of Patent: September 9, 2008
    Assignee: Teleflex Medical Incorporated
    Inventors: Hua Gao, James A. Rinner
  • Patent number: 7389700
    Abstract: An adjustable, torque-limiting driver for a tool having a radially extending handle that houses a cam member and a pair of plungers. The plungers are biased against the housing and provide variable resistance for the cam member. The arrangement of the cam member and the plungers reduces the wear on the various parts of the driver and extends the life of the driver.
    Type: Grant
    Filed: January 4, 2008
    Date of Patent: June 24, 2008
    Assignee: Bradshaw Medical, Inc.
    Inventor: Hua Gao
  • Publication number: 20080105060
    Abstract: An adjustable, torque-limiting driver for a tool having a radially extending handle that houses a cam member and a pair of plungers. The plungers are biased against the housing and provide variable resistance for the cam member. The arrangement of the cam member and the plungers reduces the wear on the various parts of the driver and extends the life of the driver.
    Type: Application
    Filed: January 4, 2008
    Publication date: May 8, 2008
    Inventor: Hua Gao
  • Publication number: 20080087515
    Abstract: A torque-limiting driver. The driver comprises a handle having a housing, a drive assembly located the housing. The drive assembly comprises a drive, a drive clutch member supported by the drive shaft and secured to the housing, a camming clutch member supported by the drive shaft and interacting with and biased against the drive clutch member. The camming clutch member is coupled to the drive shaft. The housing has a first open end and a second open end. The drive assembly is locked or secured together at the first open end, and the drive assembly is connected to a tool at the second opening.
    Type: Application
    Filed: March 20, 2007
    Publication date: April 17, 2008
    Inventor: Hua Gao
  • Publication number: 20080087146
    Abstract: A torque-limiting and ratcheting driver. The drive comprises a handle having an enclosed end and an open end, which houses a drive assembly. The drive assembly comprises a drive shaft, a drive clutch member and a camming clutch member supported by the drive shaft. The camrning clutch member is coupled to the drive shaft, and the first drive clutch member and second camming clutch member are biased towards one another. The drive assembly has a locking screw supported by the drive shaft, with the locking means located at the enclosed end of thc handle. The drive assembly is secured with the housing. The driver also comprises a ratcheting assembly connected to the handle, independently assembled of the drive assembly.
    Type: Application
    Filed: March 20, 2007
    Publication date: April 17, 2008
    Inventor: Hua Gao
  • Patent number: 7343824
    Abstract: An adjustable, torque-limiting driver for a tool having a radially extending handle that houses a cam member and a pair of plungers. The plungers are biased against the housing and provide variable resistance for the cam member. The arrangement of the cam member and the plungers reduces the wear on the various parts of the driver and extends the life of the driver.
    Type: Grant
    Filed: June 20, 2006
    Date of Patent: March 18, 2008
    Assignee: Bradshaw Medical, Inc.
    Inventor: Hua Gao
  • Patent number: D566271
    Type: Grant
    Filed: November 20, 2006
    Date of Patent: April 8, 2008
    Assignee: Bradshaw Medical, Inc.
    Inventors: Hua Gao, Joseph A. Post
  • Patent number: D580730
    Type: Grant
    Filed: April 21, 2006
    Date of Patent: November 18, 2008
    Assignee: Bradshaw Medical, Inc.
    Inventor: Hua Gao
  • Patent number: D582811
    Type: Grant
    Filed: April 29, 2008
    Date of Patent: December 16, 2008
    Assignee: Bradshaw Medical, Inc.
    Inventor: Hua Gao
  • Patent number: D596293
    Type: Grant
    Filed: March 4, 2008
    Date of Patent: July 14, 2009
    Assignee: Bradshaw Medical, Inc.
    Inventor: Hua Gao
  • Patent number: D604584
    Type: Grant
    Filed: January 13, 2009
    Date of Patent: November 24, 2009
    Assignee: Bradshaw Medical, Inc.
    Inventor: Hua Gao