Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
178 words
A control valve for pulse air type filter apparatus comprising a header supplying compressed air to said control valve thorugh a port formed in said header, a blowpipe disposed over filter bags of the filter apparatus having aligned nozzles for periodically directing pulse air into the filter bags for removing accumulated dust, said control valve being disposed between said header and said blowpipe for periodically allowing a pulse of air to pass from said header into said blowpipe, said control valve having an internal header passage communicating with said header and an internal blowpipe passage communicating with said blowpipe, diaphragm means disposed in a passage between said header and blowpipe passages, and control means for operating said diaphragm to allow pulse air to flow periodically from said header to said blowpipe, manually operated isolator valve means having a disk movable into a position to stop the flow of air from said header to said internal header passage of said control valve, said disk being mounted on one end of a valve stem slidably mounted within the valve body.
Claim 2
Dependent Claim
178 words
A control valve for pulse air type filter apparatus comprising a header supplying compressed air to said control valve thorugh a port formed in said header, a blowpipe disposed over filter bags of the filter apparatus having aligned nozzles for periodically directing pulse air into the filter bags for removing accumulated dust, said control valve being disposed between said header and said blowpipe for periodically allowing a pulse of air to pass from said header into said blowpipe, said control valve having an internal header passage communicating with said header and an internal blowpipe passage communicating with said blowpipe, diaphragm means disposed in a passage between said header and blowpipe passages, and control means for operating said diaphragm to allow pulse air to flow periodically from said header to said blowpipe, manually operated isolator valve means having a disk movable into a position to stop the flow of air from said header to said internal header passage of said control valve, said disk being mounted on one end of a valve stem slidably mounted within the valve body.
Claim 3
Dependent Claim
52 words
The control valve of claim 1 wherein said stem extends through the body portion of said valve with one end of said stem having said disk mounted thereon and wherein the other end of said stem has means engagable with said valve body for securing said isolator valve in the open position.
Claim 4
Dependent Claim
55 words
The control valve of claim 2 wherein said stem and disk extend into the interior of said header when in the open position and wherein when in the closed position said disk engages the annular shoulder portion of said header adjacent said header port to close the passage between said header and said control valve.
Claim 5
Dependent Claim
55 words
The control valve of claim 3 wherein said header has a flat seat formed thereon with said header port centered therein and wherein said valve has a flange with sealing means adapted to mate with said header seat in sealing relationship and wherein fastening means extending from said seat portion secure said valve flange thereon.
Claim 6
Dependent Claim
18 words
The control valve of claim 4 wherein said isolator valve disk is made of bendable and compressible material.
Claim 7
Dependent Claim
28 words
The control valve of claim 5 wherein a metal support washer is mounted on said stem under said disk to rigidly support said disk in the closed position.