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US 6,668,390 B1Granted
Debris recovery for drainage system
OwnerRaul Gonzalezinventor
Life of this patent
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Abstract
A debris recovery device for drainage systems that includes a shaft with a peripheral wall. A basket made out of a meshed material has a spring loaded hingedly mounted bottom wall that is partially opened when it carries a load of a predetermined weight. A peripheral flange rests on the shoulder of the peripheral wall. An oil trap assembly can be optionally added to catch oil spills before reading the drainage system. The oil trap includes a sheet of a porous oil-absorbing material.
Claims6
A debris recovery device for drainage systems that includes a shaft with a peripheral shoulder, comprising:
- A) a basket assembly having peripheral walls defining a common upper edge and a common lower edge, said basket assembly including first and second openings defined by said upper and lower edges, and said peripheral walls made out of a meshed material;
- B) a bottom wall having cooperative dimensions to close said second opening, said bottom wall being hingedly mounted to said common lower edge;
- and
- C) means for keeping said bottom wall against said common lower edge and releasable upon the application of a predetermined force so that a load supported by said bottom wall is discharged upon reaching a predetermined weight, said means for keeping said bottom wall against said common lower edge includes spring means cooperatively mounted on said basket assembly and connected to said bottom wall for urging the latter against said common lower edge.
1 more element
Dependencies are inferred from the claim text.