|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||210/164 ; 404/5 ; 210/170 ; 210/3231|
|발명자 / 주소|
|인용정보||피인용 횟수 : 125 인용 특허 : 0|
A device for use in water drains provided with an outer drain grating for preventing accidents and coarse material falling into the drain. The device is intended for separating and collecting particulate impurities, such as sand, wooden pegs and leaves, and also oil and other liquid impurities passing through the grating. To this end, the device includes a holder ring intended to be mounted under the drain grating, and carrying the combination of a coarse-filtering and protecting means and a fine-filtering means. The coarse-filtering and protecting means...
A filter device for an outdoor water drain in a paved roadway gutter or the like, said drain having an outer protective grating 12 for preventing vehicles, pedestrians and large objects from falling therethrough, said filter device serving to separate and collect particulate impurities such as sand, twigs and leaves, and also oil and other liquid impurities passing through the grating, and comprising: a continuous holder member (1) adapted to be mounted beneath the drain grating, said holder member having downwardly depending, fluid impervious sides, a r...