Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Bi-directional fluid loss device and method










Image Number 12 for United States Patent #7252153.

A fluid loss device including a flapper and seat assembly that provide a seal on a lower flapper surface when the flapper is closed and resists pressure in either direction. The flapper and seat assembly is spring biased to contact a flapper support above the flapper to resist deformation of the flapper due to a pressure differential from below the flapper. The flapper and seat assembly may be moved by tubing pressure to release an opening prop that opens the flapper. The valve seat may include an elastomeric seal element to improve the fluid flow restriction. The flapper and seat assembly is also biased upward by a pressure differential from below to above the flapper, to thereby increase the flapper to valve seat pressure as the fluid pressure differential increases.








 
 
  Recently Added Patents
Information display device and program storing medium
Proximity search methods using tiles to represent geographical zones
Method for identifying modulators of GPCR GPR1 function
Method and system for fail-safe call survival
Coordinate measuring device and method for measuring with a coordinate measuring device
Method and apparatus for information exchange over a web based environment
Variety corn line LIC7382
  Randomly Featured Patents
Inbred corn line PHB00
Movable member membrane switch
On-demand lubrication system and method for improved flow management and containment
Wall for the booth of a coating plant
Ignition control apparatus for internal combustion engine
Cam-actuated swing turnover and transfer placing apparatus
Connector with check valve and method of use
Amplifier
Lens system
Foreground detection