The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 28, 2013
Filed:
Nov. 26, 2008
Mark P. Allen, Bruce Township, MI (US);
Tao Chen, Hubei, CN;
Jay M. Tudor, Goodrich, MI (US);
Matthew J. Turpin, Linden, MI (US);
Thomas Mettler, Uetliburg, CH;
Bin Chen, Shanghai, CN;
Xiaochun Liu, Shanghai, CN;
Xiaojun Yang, Shanghai, CN;
Mark P. Allen, Bruce Township, MI (US);
Tao Chen, Hubei, CN;
Jay M. Tudor, Goodrich, MI (US);
Matthew J. Turpin, Linden, MI (US);
Thomas Mettler, Uetliburg, CH;
Bin Chen, Shanghai, CN;
Xiaochun Liu, Shanghai, CN;
Xiaojun Yang, Shanghai, CN;
Dow Global Technologies LLC, Midland, MI (US);
Abstract
An uncured acoustic absorbing member for cavity sealing comprises a thermally inert carrier () and a thermally expandable material () applied to the carrier (). The carrier () contains openings () which become covered when the thermally expandable material () is expanded to seal the cavity. The thermally expandable material () may be in the form of substantially discontinuous segments () having an area in the range of 0.25 to 400 mm. The substantially discontinuous segments () provide a highly uniform expansion of the material when it is thermally expanded. The acoustic absorbing members are particularly useful for sealing automotive cavities to provide acoustical abatement and to prevent the entry of fluids into the cavity.