Patents by Inventor Rahil Hasan

Rahil Hasan 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).

  • Method of measuring preload in a multirow bearing assembly
    Patent number: 6460423
    Abstract: The preload in a double row production bearing assembly is ascertained by comparing the deflection produced in that bearing assembly by oppositely directed thrust forces with the deflection produced in a master bearing assembly by equivalent thrust forces likewise applied in opposite directions. The master bearing assembly is similar in configuration and substantially equal in stiffness to the production bearing assembly, but exists in a state of end play. Each thrust force is transferred through the rolling elements of one row and should be sufficient in magnitude to unseat the rolling elements of the other row. The preload in the production bearing assembly equals the end play in the master bearing assembly plus the deflection in the production assembly less the deflection in the master assembly. The endplay in the master bearing assembly is ascertained by extrapolating the deflection to zero thrust force.
    Type: Grant
    Filed: February 1, 2001
    Date of Patent: October 8, 2002
    Assignee: The Timken Company
    Inventors: Larry L. Keller, William E. Harbottle, Rahil Hasan
  • METHOD OF MEASURING PRELOAD IN A MULTIROW BEARING ASSEMBLY
    Publication number: 20020139202
    Abstract: The preload in a double row production bearing assembly is ascertained by comparing the deflection produced in that bearing assembly by oppositely directed thrust forces with the deflection produced in a master bearing assembly by equivalent thrust forces likewise applied in opposite directions. The master bearing assembly is similar in configuration and substantially equal in stiffness to the production bearing assembly, but exists in a state of end play. Each thrust force is transferred through the rolling elements of one row and should be sufficient in magnitude to unseat the rolling elements of the other row. The preload in the production bearing assembly equals the end play in the master bearing assembly plus the deflection in the production assembly less the deflection in the master assembly. The endplay in the master bearing assembly is ascertained by extrapolating the deflection to zero thrust force.
    Type: Application
    Filed: February 1, 2001
    Publication date: October 3, 2002
    Applicant: The Timken Company
    Inventors: Larry L. keller, William E. Harbottle, Rahil Hasan