G - Physics – 01 – F
Patent
G - Physics
01
F
116/68
G01F 1/22 (2006.01) G01P 13/00 (2006.01) H01H 35/40 (2006.01) H01H 36/00 (2006.01)
Patent
CA 1273533
FLUID FLOW INDICATOR Abstract of the Disclosure A gas flow indicator comprises a housing defining a cylindrical flow passage having axially spaced first and second ends. A cylindrical piston member having first and second terminal ends and an exterior diameter which is substantially less than the diameter of the passage is axially positioned in the passage with its first terminal end facing the first end of the passage. The piston is mounted for sliding movement from a first position adjacent the first end of the passage to a second position adjacent the second end of the passage when gas flow through the passage exceeds a predetermined level. A flow passageway extends through the piston member from an inlet adjacent the first terminal end to a flow control outlet orifice spaced axially from the first terminal end. A metering a ring surrounds the piston at a location between first terminal end of the piston member and the outlet of the flow passageway when the piston member is in the first position and between the first end of said cylindrical passage and the first terminal end of the piston member when the piston member is in the second position.
571681
Eidsmore Paul G.
Ridout & Maybee Llp
LandOfFree
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