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
Communication apparatus, and method and program for controlling same
Virtual appliance update method
Semiconductor device and method for manufacturing the same
Methods and apparatus for power amplifier calibration
Battery structures and related methods
Coordinate measuring device and method for measuring with a coordinate measuring device
  Randomly Featured Patents
Injection molding apparatus having a weighing block
Method to determine predictive tests and device applying same to lubricant formulations
Sharing fuse blocks between memories in hard-BISR
Rolling door winch apparatus
System for reducing noise in the reproduction of recorded sound signals
Barbecue grill
Recombinant P53 adenovirus compositions
Aqueous polyamine-containing anti-frizz composition for hair
Voice coil motor and disk drive unit with the same
Exhaust purification apparatus and method for internal combustion engine