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
Packet transmission method, apparatus, and network system
Wafer recycling method
Zoom lens
Water purification using energy from a steam-hydrocarbon reforming process
Method of making a low-Rdson vertical power MOSFET device
Electronic flash device
  Randomly Featured Patents
Representative majority voter for bus invert coding
Delivery of sedative-hypnotics through an inhalation route
Preambles in OFDMA system
Apparatus for folding spaced segments of web material
Print processing method, photographic printer, and print stacking device and method
Stabilizing post and method for bark controller
Apparatus for conveying work objects
Implant with nested members and methods of use
Method and apparatus for etch rate uniformity control
Weighing and packaging system