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US 6,143,173 AGranted
Removable drain filter
OwnerDan Luo, Yan-Yan Liuinventors
Life of this patent
Estimating the term…
Abstract
The present invention provides an economical and efficient means for removing grease and other contaminants from restaurant wastewater. There is a need for an easily removable drain filter. The present invention meets this need, as it is a low-cost, disposable, and efficient means for removing these contaminants.
Claims10
A replaceable apparatus for removing grease and other contaminants from a wastewater stream, comprising:
- an outer chamber for the accumulation of waste;
- a lid on said outer chamber that is watertight to prevent the waste from escaping from said outer chamber;
- an inlet pipe through said outer chamber having an outlet end within said outer chamber for the inflow of wastewater;
- an outlet pipe through said outer chamber having an inlet end within said outer chamber for the outflow of wastewater;
- a substantially spherical filter which covers said inlet end of said outlet pipe to prevent contaminants having a specific gravity near that of water from entering said outlet pipe;
- a baffle which defines an inner chamber which houses the filter and the inlet end of said outlet pipe, to prevent grease and other contaminants having a specific gravity less than that of water from entering said outlet pipe.
3 more elements
A replaceable apparatus for removing grease and other contaminants from a wastewater stream, comprising:
- a closed outer chamber having a base, lid and sides;
- an inlet means for delivering wastewater into the outer chamber;
- an inner chamber within the outer chamber defined by a vertical baffle plate extending from the lid of the outer chamber;
- an outer pipe having a substantially horizontal opening within the inner chamber and extending out of the outer chamber;
- a substantially spherical filter attached to the opening of the outlet pipe for preventing waste from entering the outlet pipe.
2 more elements
Dependencies are inferred from the claim text.