Clean out tube check valve
OwnerLloyd J. Wanderinventor
Life of this patent
Estimating the term…
Abstract
Disclosed is a check valve for preventing liquid from entering an attached tube. The check valve includes a cylindrical housing having an inner surface and a removable plug that is at least partially within the housing. The plus has a side wall with at least part of the sidewall sloping in an inwardly direction from a top surface to a bottom surface towards a central axis. The side wall is operable to contact the inner surface of the housing and form a seal, thereby preventing liquid from passing through the housing, the housing being fixedly attached to an inner surface of a tube.
Claims16
A check valve for preventing liquid from entering a tube comprising:
- a cylindrical housing, having an inner surface;
- a removable plug at least partially within said housing, said plug having a side wall sloping in an inwardly central axis direction from a top surface to a bottom surface, said side wall operable to contact said inner surface of said housing, for the purpose of preventing liquid from entering a tube.
The invention of claim 5, further comprising a threaded cap operable to be accepted by said threads of said tube.
A check valve for preventing liquid from entering a tube comprising:
- a cylindrical housing having an inner surface:
- a removable plug at least partially within said housing said plug having a handle and a side wall sloping in an inwardly central axis direction from a top surface to a bottom surface, said side wall operable to contact said inner surface of said housing, for the purpose of preventing liquid from entering a tube.
A check valve for a sewer clean out tube for preventing liquid from entering the clean out tube comprising:
- a clean out tube having threads on an inner surface;
- a cylindrical housing having an inner surface, said housing having an outer diameter less than an inner diameter of said clean out tube and operable to slide within said clean out tube, said housing also fixedly attached within said clean out tube;
- a cap having threads operable to attach said cap to said clean out tube:
- a removable plug at least partially within said housing said plug having a handle and a side wall sloping in an inwardly central axis direction from a top surface to a bottom surface, said side wall operable to contact said inner surface of said housing, for the purpose of preventing liquid from entering the clean out tube.
Dependencies are inferred from the claim text.