Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Drainage valve pipe tap assembly










Image Number 4 for United States Patent #6681796.

A drainage valve tap assembly for connection of a branch line to a main line while simultaneously forming a freeze proof drain comprising a hollow body having a first end and a second end, a cutting tube attached to the first end of the body; a handle having a hollow interior, the handle attached to the second end of the body for rotating the body; and a resilient drain plug extending at least partially in the body for blocking off the flow of water therethrough under a water pressure and for allowing the draining of water therethrough and out of the drainage valve when the water pressure is cut-off.








 
 
  Recently Added Patents
Organic electroluminescence element
Television receiver
High-speed comparator with asymmetric frequency response
System and method of verification of analog circuits
Real ear measurement system using thin tube
Pressing mold for optical lenses and method for manufacturing glass optical lenses
Statistical information collection from one or more device(s) in storage communication with a computing platform
  Randomly Featured Patents
Manufacturing method of 3D shape structure having hydrophobic external surface
Liquid crystal display element and micro-lens arrangement and a display using the same
System and method for polling in ethernet passive optical network
Rivet belt fastener
Contact lens and method of designing the same
Methods for improving printed media self-servo writing
Fast generation of dither matrix
Portable vibrating device and method of use
Method and apparatus for installing and adjusting a clutch assembly
Microscopic inspection apparatus for reducing image smear using a pulsed light source and a linear-periodic superpositioned scanning scheme to provide extended pulse duration, and methods usef