Search

Klaus Willeke Phones & Addresses

  • 21 Donald Dr, Orinda, CA 94563 (925) 258-9707
  • Concord, CA
  • 147 Ritchie Ave, Wyoming, OH 45215 (513) 948-8081
  • Cincinnati, OH
  • Pembroke, MA
  • Oakland, CA

Work

Position: Professional/Technical

Education

Degree: High school graduate or higher

Publications

Isbn (Books And Publications)

Generation of Aerosols and Facilities for Exposure Experiments

View page
Author

Klaus Willeke

ISBN #

0250402939

Aerosol Measurement: Principles, Techniques, and Application

View page
Author

Klaus Willeke

ISBN #

0442004869

Aerosol Measurement: Principles, Techniques, and Applications

View page
Author

Klaus Willeke

ISBN #

0471284068

Aerosol Measurement: Principles, Techniques, and Applications

View page
Author

Klaus Willeke

ISBN #

0471356360

Aerosol Measurement: Principles, Techniques, And Applications

View page
Author

Klaus Willeke

ISBN #

0471784923

Us Patents

Aerodynamic Particle Size Analysis Method And Apparatus

View page
US Patent:
6408704, Jun 25, 2002
Filed:
Aug 14, 2000
Appl. No.:
09/555007
Inventors:
Klaus Willeke - Cincinnati OH, 45215-2062
International Classification:
G01N 1500
US Classification:
738655
Abstract:
A method and apparatus are provided for measuring the aerodynamic particle size distribution of airborne particles by drawing the particles through a device which continuously or intermittently changes the aerodynamic cut of the particles entering an aerosol sensor. Sensing is performed by optical sensors such as aerosol photometry or optical single particle size spectrometry or by other sensors that measure particle concentration remaining in the aerosol flowing from the cut device. Preferably, the cut device includes a rotational element that centrifugally removes particles of larger aerodynamic size than that determined by a cut setting, which can be varied by varying the rotational speed of the cut element. Preferably also, the rotary element does not alone determine the flow rate of the aerosol through the cut device, but a separate pump or flow restriction controls the time the aerosol remains in the cut device and maintains the flow rate through the device at a preferably constant level.

High Air Volume To Low Liquid Volume Aerosol Collector

View page
US Patent:
6520034, Feb 18, 2003
Filed:
Apr 3, 2002
Appl. No.:
10/116375
Inventors:
Donald A. Masquelier - Tracy CA
Fred P. Milanovich - Lafayette CA
Klaus Willeke - Cincinnati OH
Assignee:
The Regents of the University of California - Oakland CA
International Classification:
G01N 140
US Classification:
7386321, 7386322, 7386325, 73 2804, 55355, 209 17
Abstract:
A high air volume to low liquid volume aerosol collector. A high volume flow of aerosol particles is drawn into an annular, centripetal slot in a collector which directs the aerosol flow into a small volume of liquid pool contained is a lower center section of the collector. The annular jet of air impinges into the liquid, imbedding initially airborne particles in the liquid. The liquid in the pool continuously circulates in the lower section of the collector by moving to the center line, then upwardly, and through assistance by a rotating deflector plate passes back into the liquid at the outer area adjacent the impinging air jet which passes upwardly through the liquid pool and through a hollow center of the collector, and is discharged via a side outlet opening. Any liquid droplets escaping with the effluent air are captured by a rotating mist eliminator and moved back toward the liquid pool. The collector includes a sensor assembly for determining, controlling, and maintaining the level of the liquid pool, and includes a lower centrally located valve assembly connected to a liquid reservoir and to an analyzer for analyzing the particles which are impinged into the liquid pool.

Method For Sampling Aerosols

View page
US Patent:
59581115, Sep 28, 1999
Filed:
May 20, 1997
Appl. No.:
8/859492
Inventors:
Klaus Willeke - Cincinnati OH
Sergey A. Grinshpun - Cincinnati OH
Assignee:
SKC, Inc. - Eighty Four PA
International Classification:
B01D 4642
US Classification:
95268
Abstract:
A method for the collection of solid or liquid particles suspended in air (aerosol). The method involves abstracting a quantity of air through a curved, porous plate with evenly spaced holes which are designed to give an accurate sample of the particle content over defined size ranges. This method differs from similar methods in that it (1) provides a minimal bias in the results from the effects of ambient air velocity or direction, (2) provides a more even distribution of particles over a collection medium, and (3) enables exclusion of particles exceeding defined upper size limits.

Swirling Aerosol Collector

View page
US Patent:
59023856, May 11, 1999
Filed:
Jun 23, 1997
Appl. No.:
8/880118
Inventors:
Klaus Willeke - Cincinnati OH
Xuejun Lin - Cincinnati OH
Sergey Grinshpun - Cincinnati OH
Assignee:
SKC, Inc. - Eighty Four PA
International Classification:
B01D45/10
US Classification:
96316
Abstract:
An apparatus for collecting airborne particles and microorganisms by injecting them into a swirling air flow from where they are removed onto a dry surface, a surface coated with an adhesive material or a surface wetted by a liquid that is swirled onto that surface from a liquid reservoir below. The swirling air motion and the aerosol injection into it are achieved by pushing or drawing the airborne particles and microorganisms through one or more nozzles that are directed at an angle towards the collection surface. Each entire nozzle or only its exit section are aligned along the axis of aerosol flow injection into the swirling air flow. The apparatus consists of one piece or of three main components that are assembled to form one unit and are comprised of one inlet section, one nozzle section, and one collection vessel.

Apparatus For Sampling Aerosols

View page
US Patent:
59548452, Sep 21, 1999
Filed:
Jun 19, 1998
Appl. No.:
9/100443
Inventors:
Klaus Willeke - Cincinnati OH
Sergey A. Grinshpun - Cincinnati OH
Assignee:
SKC, Inc. - Eighty Four PA
International Classification:
B01D 4642
US Classification:
55331
Abstract:
An aerosol sampler for use with a source of vacuum. Air is drawn through a perforated hemisphere, directing small particles and aerosols for collection on a filter surface downstream of the hemisphere. A high collection efficiency is demonstrated.

Method For Concentrating Airborne Particles And Microorganisms By Their Injection Into A Swirling Air Flow

View page
US Patent:
59673320, Oct 19, 1999
Filed:
Jul 7, 1997
Appl. No.:
8/889050
Inventors:
Klaus Willeke - Cincinnati OH
Assignee:
SKC, Inc. - Eighty Four PA
International Classification:
B03B 400
US Classification:
209132
Abstract:
A method for concentrating airborne particles and microorganisms by injecting them into a swirling air flow from where they are removed into one or more receiving tubes. The swirling air motion and the aerosol injection into it are achieved by pushing or drawing the airborne particles and microorganisms through one or more nozzles that are directed at an angle towards the surface of the containment vessel. The ratio of air flow rate into the vessel to the air flow rate through the receiving tube is equal to the maximum aerosol concentrating ratio desired.

Method For Aerodynamic Particle Size Analysis

View page
US Patent:
59490012, Sep 7, 1999
Filed:
Feb 17, 1998
Appl. No.:
9/024341
Inventors:
Klaus Willeke - Cincinnati OH
International Classification:
G01N 1502
US Classification:
738655
Abstract:
A method is provided for measuring the aerodynamic particle size distribution of airborne particles by drawing the particles through a device which continuously or intermittently changes the aerodynamic cut of the particles entering an optical sensor. Optical sensing is performed by aerosol photometry or optical single particle size spectrometry. If aerosol photometry is used, the aerosol photometer becomes an aerodynamic particle size spectrometer by relating the aerosol photometer's output to the aerodynamic particle size fractions passing through the aerodynamic cut device. If optical single particle size spectrometry is used, the optical single particle counter becomes an aerosol particle size spectrometer by calibrating the optical sizes of the optical single particle counter relative to the aerodynamic particle sizes determined by the aerodynamic cut device.

Method For Collecting Airborne Particles And Microorganisms By Their Injection Into A Swirling Air Flow

View page
US Patent:
59047526, May 18, 1999
Filed:
Jun 23, 1997
Appl. No.:
8/880254
Inventors:
Klaus Willeke - Cincinnati OH
Assignee:
SKC, Inc. - Eighty Four PA
International Classification:
B01D45/10
US Classification:
95216
Abstract:
A method for collecting airborne particles and microorganisms by injecting them into a swirling air flow from where they are removed onto a dry surface, a surface coated with an adhesive material or a surface wetted by a liquid that is swirled onto that surface from a liquid reservoir below. The swirling air motion and the aerosol injection into it are achieved by pushing or drawing the airborne particles and microorganisms through one or more nozzles that are directed at an angle towards the collection surface.
Klaus Willeke from Orinda, CA Get Report