Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Corrugated leaching chamber










Image Number 10 for United States Patent #7189027.

A continuous curve arch shape cross section leaching chamber made of molded thermoplastic has closely spaced corrugations and sidewalls which are perforated with slots which slope downwardly, running from interior to exterior of the chamber. The slot height and or wall thickness vary with slot clevation from the base, to achieve a desired minimum Soil Threshold Angle in the slots, where said Angle parameter relates to resistance to entry of surrounding soil. Slotted wall thickness is less than about two times the thickness of the basic chamber wall thickness elsewhere. The chamber has properties and performance approximating prior art chambers, but has substantially less normalized weight and total weight.








 
 
  Recently Added Patents
Leadless integrated circuit packaging system and method of manufacture thereof
Highly stable electrolytic water with reduced NMR half line width
Method and structure for forming ETSOI capacitors, diodes, resistors and back gate contacts
Systems, computer programs, and methods for controlling costs of a healthcare practice
Determining phase-specific parameters of a physiological variable
Gaming machine certificate creation and management
Substituted thiophene pentamers
  Randomly Featured Patents
Side sweeping brushing vacuum machine
Tire tread
Peripheral intravenous safety catheter with quick, painless puncture system
Method for recycling a substrate
Method and apparatus for QP modulation based on perceptual models for picture encoding
Blends of polystrene or poly (p-methylstyrene) and p-methylstyrene-diene-styrene block copolymers
Regeneration control for diesel particulate filter for treating diesel engine exhaust
Pre-poly emitter implant
Preparation of improved heat stable yellow iron oxide pigments
Semiconductor memory device