Patents by Inventor Shwi-Long Hwang

Shwi-Long Hwang 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).

  • Dampers for internal applications and articles damped therewith
    Patent number: 5902656
    Abstract: The present invention provides a damper comprising a compressible and resilient shaft and at least one constrained layer damping section attached to the exterior of the shaft via an adhesive. The damper can be compressed and inserted into a cavity or hollow in an article to be damped whereupon it can expand and provide vibration damping properties as well as optional acoustic absorbing properties. The present invention also provides the damped article and a method of damping the article.
    Type: Grant
    Filed: June 21, 1996
    Date of Patent: May 11, 1999
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Shwi-Long Hwang
  • Constrained layer damper with slit(s) and/or cutout(s)
    Patent number: 5725931
    Abstract: The present invention provides a constrained layer damper having slits and/or cutout(s) therein, which provides improved vibration damping performance. The constrained layer damper of the invention is useful, for example, for damping rotatable spacer articles and also rotatable storage media such as compact disks.
    Type: Grant
    Filed: November 3, 1995
    Date of Patent: March 10, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Donald T. Landin, Shwi-Long Hwang