Liquid drainage system with stiff valve

Details Liquid drainage system with stiff valve Liquid drainage system with stiff valve

A - Human Necessities

61

F

128/110

A61F 5/44 (2006.01)

Patent

CA 1228274

PF-1532 LIQUID DRAINAGE SYSTEM WITH STIFF VALVE ABSTRACT OF THE DISCLOSURE A liquid drainage system comprising, a receptacle hav- ing a chamber to receive liquid, and a depending annular wall defining a valve seat at a lower portion thereof and an opening in the region of the seat. The system has a valve element com- prising a sheet of flexible relatively stiff material being suf- ficiently large to extend across the opening and sealingly engage against the seat peripherally around the wall. The sys- tem has a device for retaining a central portion of the valve element adjacent the seat.

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