Back to results
US 4,287,753 AGranted
Automatic moisture controller with stack sensor
OwnerFrederick W. Granthaminventor
Life of this patent
Estimating the term…
Abstract
A moisture detector and controller including a pair of spaced-apart plates positioned in a moist air duct, a cleaner positioned between the plate surfaces adapted to wipe them upon initiation and termination of air flow, and an associated circuit effective to measure the resistance between the plates and compare it with a preselected reference resistance indicative of a desired humidity of the air present in the duct.
Claims13
Moisture detecting apparatus comprising:
- a duct for the passage of moist air;
- a pair of opposed spaced-apart conductive plates mounted in said duct;
- a wiper adapted to selectively traverse the facing surfaces of said plates;
- and
- sensing means connected to said plates effective to measure the resistance between the plates and provide an indication of relative humidity of the air between the plates.
2 more elements
Dependencies are inferred from the claim text.