Grooved impactor and inertial trap for sampling inhalable particulate matter

Patent · Sun Jan 01 00:00:00 EST 1984

OSTI ID:865027

Loo, Billy W ^[1]

---

1. Oakland, CA

An inertial trap and grooved impactor for providing a sharp cutoff for particles over 15 microns from entering an inhalable particulate sampler. The impactor head has a tapered surface and is provided with V-shaped grooves. The tapered surface functions for reducing particle blow-off or reentrainment while the grooves prevent particle bounce. Water droplets and any resuspended material over the 15 micron size are collected by the inertial trap and deposited in a reservoir associated with the impactor.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• DOE Contract Number: W-7405-ENG-48
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4452068
• OSTI ID: 865027
• Country of Publication: United States
• Language: English

Related Subjects

grooved
impactor
inertial
trap
sampling
inhalable
particulate
matter
providing
sharp
cutoff
particles
15
microns
entering
sampler
head
tapered
surface
provided
v-shaped
grooves
functions
reducing
particle
blow-off
reentrainment
prevent
bounce
water
droplets
resuspended
material
micron
size
collected
deposited
reservoir
associated
tapered surface
particulate matter
reducing particle
water droplets
micron size
v-shaped grooves
sharp cutoff
inertial trap
grooved impactor
inhalable particulate
v-shaped groove
prevent particle
/73/