SEWER OVERFLOW RELIEF DEVICE
1 Assignment
0 Petitions
Accused Products
Abstract
A sewer overflow relief device for mounting at a top end of a sewer overflow relief pipe includes a top cover having at least one outside air intake and an air flow control mechanism for controlling the flow of outside air into the sewer overflow relief pipe. In use, the device prevents outside water from entering the sewer and the device may be ejected from the sewer overflow relief pipe by sewage pressure pushing against the device, thereby allowing the sewer overflow relief pipe to overflow.
20 Citations
17 Claims
-
1-9. -9. (canceled)
-
10. A sewer overflow relief device for mounting at a top end of a sewer overflow relief pipe, the device comprising:
-
a top cover having an upper surface, the upper surface having at least one outside air intake; and air flow control means for controlling the flow of outside air into the sewer overflow relief pipe; wherein, in use, the device prevents outside water from entering the sewer and the device may be ejected from the sewer overflow relief pipe by sewage pressure pushing against the device, thereby allowing the sewer overflow relief pipe to overflow. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
-
Specification