Resources Contact Us Home
Tubular filtration apparatus

Image Number 3 for United States Patent #6799686.

An expandable well screen has a desirable thin-wall construction together with a simplified fabrication method. In fabricating the screen, a flexible sheet of metal mesh filter media is diffusion bonded to an inner side of a perforated metal sheet which is then deformed to a tubular shape to form a filter structure having an outer perforated tubular shroud interiorly lined with the filter media. The tubular filter structure is telescoped onto a perforated base pipe and has its opposite ends sealingly secured thereto to complete the expandable well screen.

  Recently Added Patents
Implicit certificate scheme
Method for producing a flexible composite elastomeric polyurethane skin
Method and system of a sensor interface having dynamic automatic gain control
ESD protection circuit and ESD protection device thereof
Steering lock driving circuit and steering lock device
Permeable pressure sensitive adhesive
Magnetic recording medium, information storage device, and method of manufacturing magnetic recording medium
  Randomly Featured Patents
On-die termination snooping for 2T applications in a memory system implementing non-self-terminating ODT schemes
System for powering, speed control, steering, and braking
System for monitoring relevant events by comparing message relation key
Dust collector with an invertible wind exhausting case
Safety measures for kayaks and other craft
Certain aryl and cycloalkyl fused imidazopyrazinediones; a new class of GABA brain receptor ligands
Nonaqueous liquid detergent compositions
Process for spinning of solutions of cellulose carbamate
System, method, and program product for administrating document file in computerized network system
Heterocyclic inhibitors of necroptosis