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:
Apr. 22, 2008
Filed:
Jun. 19, 2006
Eric Gard, San Francisco, CA (US);
Vincent Riot, Oakland, CA (US);
Keith Coffee, Diablo Grande, CA (US);
Bruce Woods, Livermore, CA (US);
Herbert Tobias, Kensington, CA (US);
Jim Birch, Albany, CA (US);
Todd Weisgraber, Brentwood, CA (US);
Eric Gard, San Francisco, CA (US);
Vincent Riot, Oakland, CA (US);
Keith Coffee, Diablo Grande, CA (US);
Bruce Woods, Livermore, CA (US);
Herbert Tobias, Kensington, CA (US);
Jim Birch, Albany, CA (US);
Todd Weisgraber, Brentwood, CA (US);
Lawrence Livermore National Security, LLC, Livermore, CA (US);
Abstract
A pressure-flow reducer, and an aerosol focusing system incorporating such a pressure-flow reducer, for performing high-flow, atmosphere-pressure sampling while delivering a tightly focused particle beam in vacuum via an aerodynamic focusing lens stack. The pressure-flow reducer has an inlet nozzle for adjusting the sampling flow rate, a pressure-flow reduction region with a skimmer and pumping ports for reducing the pressure and flow to enable interfacing with low pressure, low flow aerosol focusing devices, and a relaxation chamber for slowing or stopping aerosol particles. In this manner, the pressure-flow reducer decouples pressure from flow, and enables aerosol sampling at atmospheric pressure and at rates greater than 1 liter per minute.