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:
Jul. 19, 1983
Filed:
Oct. 26, 1981
Martin B Barmatz, Glendale, CA (US);
Eugene H Trinh, Los Angeles, CA (US);
Taylor G Wang, Glendale, CA (US);
Daniel D Elleman, San Marino, CA (US);
Nathan Jacobi, Pasadena, CA (US);
Abstract
A system is described for acoustically moving an object within a chamber, by applying wavelengths of different modes to the chamber to move the object between pressure wells formed by the modes. In one system, the object (96, FIG. 7) is placed in a first end portion of the chamber while a resonant mode is applied along the length of the chamber that produces a pressure well (86) at that location. The frequency is then switched to a second mode that produces a pressure well (100) at the center of the chamber, to draw the object thereto. When the object reaches the second pressure well and is still travelling towards the second end of the chamber, the acoustic frequency is again shifted to a third mode (which may equal the first mode) that has a pressure well (106) in the second end portion of the chamber, to draw the object thereto. A heat source (108) may be located near the second end of the chamber to heat the sample, and after the sample is heated it can be cooled by moving it in a corresponding manner back to the first end portion of the chamber. The transducers (88, 98, 110) for levitating and moving the object may be all located at the cool first end of the chamber.