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Title: Quick-change filter cartridge

Abstract

A quick-change filter cartridge. In sampling systems for measurement of airborne materials, a filter element is introduced into the sampled airstream such that the aerosol constituents are removed and deposited on the filter. Fragile sampling media often require support in order to prevent rupture during sampling, and careful mounting and sealing to prevent misalignment, tearing, or creasing which would allow the sampled air to bypass the filter. Additionally, handling of filter elements may introduce cross-contamination or exposure of operators to toxic materials. Moreover, it is desirable to enable the preloading of filter media into quick-change cartridges in clean laboratory environments, thereby simplifying and expediting the filter-changing process in the field. The quick-change filter cartridge of the present invention permits the application of a variety of filter media in many types of instruments and may also be used in automated systems. The cartridge includes a base through which a vacuum can be applied to draw air through the filter medium which is located on a porous filter support and held there by means of a cap which forms an airtight seal with the base. The base is also adapted for receiving absorbing media so that both particulates and gas-phase samples maymore » be trapped for investigation, the latter downstream of the aerosol filter.« less

Inventors:
 [1];  [2];  [3]
  1. (Santa Fe, NM)
  2. (College Station, TX)
  3. (Bryan, TX)
Publication Date:
Research Org.:
Los Alamos National Laboratory (LANL), Los Alamos, NM
OSTI Identifier:
869822
Patent Number(s):
US 5404762
Assignee:
Regents of Univ. of California Office of Technology Transfer (Alameda, CA) LANL
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
quick-change; filter; cartridge; sampling; systems; measurement; airborne; materials; element; introduced; sampled; airstream; aerosol; constituents; removed; deposited; fragile; media; require; support; prevent; rupture; careful; mounting; sealing; misalignment; tearing; creasing; allow; air; bypass; additionally; handling; elements; introduce; cross-contamination; exposure; operators; toxic; moreover; desirable; enable; preloading; cartridges; clean; laboratory; environments; simplifying; expediting; filter-changing; process; field; permits; application; variety; types; instruments; automated; base; vacuum; applied; draw; medium; located; porous; held; means; cap; forms; airtight; seal; adapted; receiving; absorbing; particulates; gas-phase; samples; trapped; investigation; latter; downstream; toxic materials; sampled air; filter elements; filter media; filter element; filter medium; porous filter; filter cartridge; quick-change filter; tight seal; sampling systems; draw air; /73/

Citation Formats

Rodgers, John C., McFarland, Andrew R., and Ortiz, Carlos A. Quick-change filter cartridge. United States: N. p., 1995. Web.
Rodgers, John C., McFarland, Andrew R., & Ortiz, Carlos A. Quick-change filter cartridge. United States.
Rodgers, John C., McFarland, Andrew R., and Ortiz, Carlos A. Sun . "Quick-change filter cartridge". United States. https://www.osti.gov/servlets/purl/869822.
@article{osti_869822,
title = {Quick-change filter cartridge},
author = {Rodgers, John C. and McFarland, Andrew R. and Ortiz, Carlos A.},
abstractNote = {A quick-change filter cartridge. In sampling systems for measurement of airborne materials, a filter element is introduced into the sampled airstream such that the aerosol constituents are removed and deposited on the filter. Fragile sampling media often require support in order to prevent rupture during sampling, and careful mounting and sealing to prevent misalignment, tearing, or creasing which would allow the sampled air to bypass the filter. Additionally, handling of filter elements may introduce cross-contamination or exposure of operators to toxic materials. Moreover, it is desirable to enable the preloading of filter media into quick-change cartridges in clean laboratory environments, thereby simplifying and expediting the filter-changing process in the field. The quick-change filter cartridge of the present invention permits the application of a variety of filter media in many types of instruments and may also be used in automated systems. The cartridge includes a base through which a vacuum can be applied to draw air through the filter medium which is located on a porous filter support and held there by means of a cap which forms an airtight seal with the base. The base is also adapted for receiving absorbing media so that both particulates and gas-phase samples may be trapped for investigation, the latter downstream of the aerosol filter.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 1995},
month = {Sun Jan 01 00:00:00 EST 1995}
}

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