Patents by Inventor Peter H. Tsang

Peter H. Tsang 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: 5339931
    Abstract: Friction material pads for use in a brake system with an aluminum-metal matrix composite rotor wherein a brake application can create operational temperatures that approach 450C. The formulation of the composition for the friction pads is generically a basic non-asbestos organic formula modified to include a high abrasive content, solid lubricant package, and a porous copper powder. The porous copper powder which makes up from 2-18 percent by weight the friction pads has a nominal diameter of 0.20 mm. The porous copper powder proportionally responds to temperature and mechanical forces generated during a brake application by deforming and smearing to aid in the formation of a glaze between the engaging surfaces of the friction pads and aluminum-metal matrix composite rotor. This glaze prevents scoring of the aluminum-based rotor while at the same time maintaining a substantial stable coefficient of friction of approximately 0.4 during brake applications over a wide range of speeds and deceleration rates.
    Type: Grant
    Filed: May 7, 1993
    Date of Patent: August 23, 1994
    Assignee: Allied-Signal Inc.
    Inventors: Michael G. Jacko, Peter H. Tsang, Seong K. Rhee
  • Patent number: 5108159
    Abstract: A noise sensor for supplying a central processing unit of an anti-lock brake system with a noise signal corresponding to vibrations produced during braking. The central processing unit responds to the noise signal by supplying a control valve assembly with an operational signal which modulates the fluid pressure supplied to a wheel cylinder to create a predetermined fluid pressure frequency therein to nullify vibrations and correspondingly attenuate noise produced thereby.
    Type: Grant
    Filed: October 26, 1990
    Date of Patent: April 28, 1992
    Assignee: Allied-Signal Inc.
    Inventors: Peter H. Tsang, Seong K. Rhee, Theodore F. Schnitz, Yiren S. Wang
  • Patent number: 4666834
    Abstract: A new technique is disclosed for assaying for the presence of invasive cancer. While based on leukocyte adherence inhibition, it is improved by using relatively long lived radio-labeled leukocytes, fractionation of the leukocytes to separately treat T-cells and monocytes and by providing for human plasma or serum in the incubation medium.
    Type: Grant
    Filed: March 28, 1984
    Date of Patent: May 19, 1987
    Assignee: Mount Sinai School of Medicine of the City University of New York
    Inventors: Julius G. Bekesi, James F. Holland, Peter H. Tsang
  • Patent number: 4605595
    Abstract: A method of manufacturing a friction article wherein a fiber material (14) having a continuous and substantially uniform three dimensional matrix which is filled with a slurry (24) made up of fillers, friction modifiers, a reinforcing material and a liquid binder. The filled fiber material is conveyed to a dryer (32) where the volatile solution is evaporated leaving the fillers, friction modifiers, reinforcing material and binder. The filled fiber material (14) is thereafter placed in an oven (50) where a compressive force is applied thereto while the binder is cured to define a second matrix which holds the fillers, friction modifiers, and reinforcing material in the three dimensional matrix.
    Type: Grant
    Filed: March 18, 1985
    Date of Patent: August 12, 1986
    Assignee: Allied Corporation
    Inventors: Peter H. Tsang, Joseph P. Coyle, Tung Liu, John G. VanderPoorte
  • Patent number: 4537823
    Abstract: A method of manufacturing a friction article wherein a fiber material (14) having a continuous and substantially uniform three dimensional matrix which is filled with a slurry (24) made up of fillers, friction modifiers, a reinforcing material and a liquid binder. The filled fiber material is conveyed to a dryer (32) where the volatile solution is evaporated leaving the fillers, friction modifiers, reinforcing material and binder. The filled fiber material (14) is thereafter placed in an oven (50) where a compressive force is applied thereto while the binder is cured to define a second matrix which holds the fillers, friction modifiers, and reinforcing material in the three dimensional matrix.
    Type: Grant
    Filed: November 18, 1983
    Date of Patent: August 27, 1985
    Assignee: Allied Corporation
    Inventors: Peter H. Tsang, Joseph P. Coyle, Tung Liu, John G. VanderPoorte
  • Patent number: 4455379
    Abstract: A new technique is disclosed for assaying for the presence of invasive cancer. While based on leukocyte adherence inhibition, it is improved by using relatively long lived radio-labeled leukocytes, fractionation of the leukocytes to separately treat T-cells and monocytes and by providing for human plasma or serum in the incubation medium.
    Type: Grant
    Filed: July 21, 1981
    Date of Patent: June 19, 1984
    Assignee: Mount Sinai School of Medicine of the City University of New York
    Inventors: Julius G. Bekesi, James F. Holland, Peter H. Tsang