Resources Contact Us Home
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
Delay lines, amplifier systems, transconductance compensating systems and methods of compensating
Machine tool with an electrical generator for passive power generation
Modified continuous phase modulation communications system and related methods
Control method and allocation structure for flash memory device
Isolated Australian coral reef fluorescent proteins and cell-based kinase or phosphatase platforms for cancer drug development
Methods and kits for predicting the responsiveness of hepatocellular carcinoma patients to 5-fluorouracil-based combination chemotherapy
Deadline-driven parallel execution of queries
  Randomly Featured Patents
Submersible positive displacement piston pump
Method and system for computerized learning, response, and evaluation
Method for determining earth formation shear wave anisotropy parameters by inversion processing of signals from a multiple-component dipole array acoustic well logging instrument
Electronic musical instrument of variable timbre with switchable automatic accompaniment
Roller bearing cage
Outer surface of a power supply bezel
Profile driven code motion and scheduling
Pressure vessels
Polysilicon coated nitride-lined shallow trench
Tough denture and method for producing the same