Normally-open backwater valve with suspended flapper

US20170051493A1Inactive Publication Date: 2017-02-23RECTORSEAL LLC
0 Cites 3 Cited by

Patent Information

Authority / Receiving Office
US · United States
Current Assignee / Owner
RECTORSEAL LLC
Publication Date
2017-02-23
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

A normally-open backwater valve fluidly coupled between one or more discharge conduits of a building, or other location, and a sewage, or drainage, system includes a valve body having a horizontally-oriented fluid flow passageway, a flapper pivotably moveable therein and at least one spacer configured to position the flapper above the lower interior surface of the valve body in the passageway when the flapper is in an open position.
Need to check novelty before this filing date? Find Prior Art

Description

[0001] This application claims priority to U.S. Provisional Patent Application Ser. Nos. 62 / 283,054 filed on Aug. 19, 2015 and entitled “Normally Open Backwater Valve with Magnets” and 62 / 398,040, filed on Feb. 16, 2016 and entitled “Normally Open Backwater Valve with Magnets”, both of which are hereby incorporated by reference herein in their entireties.FIELD OF THE DISCLOSURE

[0002] This disclosure relates to normally-open backwater valves for sewage and drainage conduits.BACKGROUND

[0003] Backwater valves are used in homes and other buildings to prevent sewage backup into the residence or building, such as due to a plugged sewer system, excess volume in the system, groundwater flooding or other causes. Two common types of backwater valves are referred to as “nomrally-closed” backwater valves and “normally-open” backwater valves based upon the normal position of the flapper member that closes off the valve. In many municipalities, backwater valves are required by law. Some jurisdiction...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More