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. 23, 2000
Filed:
Feb. 05, 1999
Edward F Ruppel, Jr, San Jose, CA (US);
Biometric Imaging, Inc., Mountain View, CA (US);
Abstract
An energy director structure with an auxiliary weld depth limitation feature is provided. The energy director is located on a first contact shelf. A second contact shelf that is shorter, broader, forming a mesa is positioned laterally adjacent to, and below, the first contact shelf. The second contact shelf forms a mesa that limits the depth of the ultrasonic welding. Limiting the time, pressure, or temperature of the welding process additionally ensures the weld depth is limited to the height of the second contact shelf or mesa. Two plastic pieces, one of which includes an energy director and mesa structure, may be welded together to form a capillary having precise volumetric accuracy.