one-way valve definition
one-way valve and “one-way . . . valve means”
one-way valve and “one-way waterless valve means” This is not means-plus-function limitation. The terms mean “a type of valve, also known as a check valve, that allows the flow of fluid in one direction but prevents flow in the reverse direction.” “means defining a flow path between the inlet tube and said one-way waterless valve” and “flow path” This is not a means-plus-function limitation. The terms mean a path along which air flows between the distinct points. “water seal” The term means a fluid filled structure that allows air to escape from the patient but prevents the back flow of air to the patient. “air leak detector,” “air leak detector means,” “U-shaped path,” “U-tube,” and “combination negative pressure indicator and air leak detector” These terms are constrained to mean an air leak detector or U-tube that does not act as a water or fluid seal.