Check valve
OwnerPeter Kasper Dahminventor
Life of this patent
Estimating the term…
Abstract
A one-way valve which can be utilized in a toilet, particularly in a urinal, to prevent return flow of malodorous gases from the sewage system into the room wherein the toilet is installed has a body which is confined in the toilet. The body carries two sheet- or panel-shaped valving elements at least one of which is resilient to yield to the flow of urine but normally sealingly engages the other element to prevent the flow of gases from the sewage system counter to the direction of flow of the urine. At least one marginal portion of the at least one valving element is free to move away from the corresponding marginal portion of the other element to also permit lateral outflow of urine when the one element is at least partially out of contact with the other element.
Claims20
A one-way valve, comprising:
- a body having a first end and a second end and defining a fluid flow path extending from said first end toward said second end;
- a substantially strip-shaped first valving element provided at said second end and extending away from said first end of said body;
- and a second valving element borne by said body and normally sealingly engaging said first element to prevent the outflow of a fluid from said path, at least one of said elements consisting of a material which is sufficiently resilient to move away from the other of said elements in response to the flow of fluid along said path and thence between said elements, wherein said at least one valving element is movable away from said other valving element to permit the fluid to flow between said elements in a first direction away from said second end of said body and in at least one second direction transversely of said first direction.
A one-way valve comprising:
- a body having a first end and a second end and defining a fluid flow path extending from said first end toward said second end;
- a substantially strip-shaped first valving element provided at said second end and extending away from said first end of said body;
- and
- a substantially strip-shaped second valving element, formed separately from the first valving element, borne by said body, and partially sealingly engaged to the first valving element along seams at edges of each of the first and second valving elements;
- wherein the sealingly engaged first and second valving elements prevent the outflow of a fluid from said path, at least one of said elements comprising a material that is sufficiently resilient to move away from the other of said elements in response to the flow of fluid along and transverse to said path and thence between said elements.
Dependencies are inferred from the claim text.