Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Device for testing air for microorganism content










Image Number 4 for United States Patent #4663293.

In a device for testing air for microorganism content with a rapidly rotating impeller inside a cylinder that has a backing sheet coated with culture medium against its inside surface, microorganisms that vary more extensively in size can be detected with almost equal effectiveness, the throughput of air can easily be determined, and the precipitation effect can be precisely tested because the backing sheet rotates along with the impeller, the blades of the propeller are at a low angle to the plane it rotates in, the air enters at a location that is separate from the location at which it leaves, through inlets from above and down and out through outlets, and the inner surface of the rotor below the impeller chamber is in the form of a channeling cylinder.








 
 
  Recently Added Patents
Navigational cube for matching vendor offerings to service provider requirements
Oil extractor and the preparation method thereof
Reading apparatus and reading method
Application authentication system and method
System and methods for random parameter filtering
Wideband multi-channel receiver with fixed-frequency notch filter for interference rejection
Sign language keyboard and sign language searching apparatus using the same
  Randomly Featured Patents
Method and apparatus for detecting a synchronous signal
Apparatus for conveying waste materials by suction
Heteroarotinoids containing urea or thiourea linker
Car wheel lock
Adhesive sealed solid electrolyte cell housed within a ceramic frame and the method for producing it
Lawn-border sprinkler
Method of automatically discriminating and separating scraps containing copper from iron scraps
Mobile communication terminal and method of displaying information using the same
Method and system for wideband device measurement and modeling
Vulnerable road user protection system