Pop-up valve with seal
AssigneeXiamen Lota International Co., Ltd.
InventorsKeping Li, Pingsheng Yao
Life of this patent
Estimating the term…
Abstract
A pop-up valve, comprising an internally threaded screw nut, and positioned in a circumjacent manner around a cylindrical waste drain pipe. A complementary, externally threaded screw bolt, is threadably engageable with the screw nut, and also circumjacent the cylindrical waste drain pipe. A seal element is positioned on the screw nut, and is vertically movable towards the bottom of a sink, as a result of corresponding vertical movement of the screw bolt.
Claims24
A pop-up valve assembly for use with a bathroom sink, comprising an internally threaded screw nut for circumscribing a unitary cylindrical waste drain pipe that is devoid of external threads;
- a sink seat secured to an upper end of said waste drain pipe;
- an elongated plunger extending through said sink seat and into an upper portion of said waste drain pipe;
- a complementary, externally threaded screw bolt, threadably engageable with the screw nut;
- and
- a seal element that is vertically movable, as a result of corresponding continual sliding movement of the screw bolt along an external longitudinal rail of said waste drain pipe.
A pop-up valve assembly for use with a bathroom sink, comprising:
- an internally threaded screw nut is a sleeve that is circumjacent a unitary, generally cylindrical waste drain pipe that is devoid of external threads, wherein said waste drain pipe includes an external longitudinal rail;
- a sink seat secured to an upper end of said waste drain pipe, wherein an upper portion of said waste drainpipe receives an elongated plunger;
- a complementary, externally threaded screw bolt, threadably engageable with the screw nut;
- and
- a seal element that is contained within a groove at the top of the screw bolt, and is slidingly movable, as a result of corresponding continual sliding movement of the screw bolt along said longitudinal rail of said waste drain pipe.
A pop-up valve assembly for use with a bathroom sink, comprising:
- an elongated cylindrical waste drain pipe that is devoid of external threads and that includes an external longitudinal rail;
- an elongated plunger that extends through a sink seat and into an upper portion of the waste drain pipe;
- an internally threaded screw nut that circumscribes the waste drain pipe;
- a complementary screw bolt with external threads that engage the internal threads of the screw nut, said screw bolt continually slidable along said longitudinal rail of said waste drain pipe;
- and
- a seal element that is vertically movable, as a result of corresponding sliding movement of both the screw nut and screw bolt along said waste drain pipe.
A pop-up valve assembly for use with a bathroom sink, comprising:
- an elongated cylindrical waste drain pipe that is devoid of external threads, the waste drain pipe includes an external longitudinal rail and a stationary base plate, said base plate extending radially outward from the waste drain pipe at a lower edge of the longitudinal rail;
- a sink seat secured to an upper end of said waste drain pipe;
- a screw bolt circumjacent the waste drain pipe, said screw bolt having an upper annular groove with a seal element, wherein said screw bolt is continually slidable along said longitudinal rail of said waste drain pipe;
- a screw nut circumjacent said screw bolt, said screw nut having internal threads that engage external threads of said screw bolt.
Dependencies are inferred from the claim text.