Apparatus for dynamically adjusting size of an orifice to increase accuracy in measuring the rate of air flow
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 16, 2003
Grant Date -
Apr 10, 2003
app pub date -
Jul 7, 1999
filing date -
Jul 7, 1999
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A flow adapter for measuring the rate at which air flows into the brake pipe. The adapter includes a housing, a flow valve and a transducer. The primary passage of the housing contains a primary orifice and a secondary passage contains a secondary orifice. The flow valve is disposed within a supplemental passage. When the rate of air flowing from the input passage into the input chamber is less than or equal to a predetermined amount, the flow valve closes the supplemental passage. When the flow rate into the input chamber is greater than the predetermined amount, the flow valve opens the passage to an extent determined by the magnitude of the flow rate. This allows air to flow through the supplemental passage, in addition to that flowing through the primary passage. The transducer generates a signal proportional to the difference in pressure between input and output chambers.
First Claim
Other Claims data not available
