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. 09, 2000
Filed:
Sep. 18, 1998
Applicant:
Inventor:
Haregoppa S Gopalakrishna, Woodbury, MN (US);
Assignee:
3M Innovative Properties Company, St. Paul, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ;
U.S. Cl.
CPC ...
1565802 ; 156 731 ; 4251742 ;
Abstract
A rotary acoustic horn imparts energy at a selected wavelength, frequency, and amplitude. The horn includes a shaft having an axial input end and an axial output end and a welding portion. The welding portion is mounted on the shaft and has a diameter that is greater than the diameter of the shaft. The welding portion has a weld face that expands and contracts with the application of acoustic energy. At least a portion of the weld face can be formed of a different material than the remainder of the welding portion. The welding portion can include a sleeve. The sleeve can be shrink fit onto the welding portion.