Patents by Inventor Gunnar Hagbjer

Gunnar Hagbjer 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).

  • Structural damping
    Patent number: 4527371
    Abstract: For improved vibration damping are used preferably a plurality of parallel bodies (30) of generally thread-like configuration which are embedded in a layer of adherent viscoelastic material (29) applied to a vibrating structure or to a body (24) which in turn rests against a vibrating structure (22).
    Type: Grant
    Filed: February 14, 1983
    Date of Patent: July 9, 1985
    Assignee: IFM-Akustikbyran AB
    Inventor: Gunnar Hagbjer
  • Hygienic absorbent and use of a plastic foil in the absorbent
    Patent number: 4450195
    Abstract: A hygienic absorbent, i.e. a substantially liquid and gas tight sound absorbent, including an under-absorbent (11), a tight foil (13) and gas-filled blisters (15) located therebetween. Preferably a supporting layer (16) is located outside the under-absorbent to support the blisters (15).
    Type: Grant
    Filed: December 31, 1980
    Date of Patent: May 22, 1984
    Assignee: IFM Akustikbyran AB
    Inventor: Gunnar Hagbjer
  • Vibration damped structures and objects
    Patent number: 4338758
    Abstract: Vibration energy is absorbed in a structure in which bores are formed in a rigid part and viscoelastic material is applied in the bores.
    Type: Grant
    Filed: April 25, 1980
    Date of Patent: July 13, 1982
    Assignee: Reduc Acoustics AB
    Inventor: Gunnar Hagbjer