Liquid filter having self-retaining filter bag
First Claim
1. In a liquid filter including a housing having a side wall defining a chamber therein, said chamber having an opening, a cap spanning said chamber opening, a support carried by said housing, a reticulated basket having an opening therein defined by a marginal edge, said basket fitted within said chamber with its marginal edge contacting said support to space said basket from said housing side wall, an inlet port and an outlet port located in liquid flow communication through said basket, the improvement comprising a filter bag having an opening therein defined by a shape-retaining edge portion, said bag opening edge portion including a flexible outturned flange means, said bag fitting in said basket through said basket opening within the path of liquid flow communication between said inlet and outlet ports, said bag having its opening edge portion overlying said basket marginal edge, said bag flange means engaging said housing to secure said bag in position within said basket independently of said cap.
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Accused Products
Abstract
A liquid filter having a housing which includes a chamber enclosed by a cap. A reticulated basket is fitted within the housing chamber and supported by the housing. A filter bag is positioned within the reticulated basket and includes a flexible flange which engages the housing to secure the bag within the basket without the aid of the filter cap.
61 Citations
14 Claims
- 1. In a liquid filter including a housing having a side wall defining a chamber therein, said chamber having an opening, a cap spanning said chamber opening, a support carried by said housing, a reticulated basket having an opening therein defined by a marginal edge, said basket fitted within said chamber with its marginal edge contacting said support to space said basket from said housing side wall, an inlet port and an outlet port located in liquid flow communication through said basket, the improvement comprising a filter bag having an opening therein defined by a shape-retaining edge portion, said bag opening edge portion including a flexible outturned flange means, said bag fitting in said basket through said basket opening within the path of liquid flow communication between said inlet and outlet ports, said bag having its opening edge portion overlying said basket marginal edge, said bag flange means engaging said housing to secure said bag in position within said basket independently of said cap.
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14. In a liquid filter including a housing having a side wall defining a chamber therein, said chamber having an opening therein, a cap spanning said chamber opening, an annular shoulder carried by said housing side wall and extending into the housing chamber, said shoulder having opening means formed therein, a reticulated basket having an opening therein defined by a marginal edge, said basket removably fitted within said housing chamber with its said marginal edge contacting said housing shoulder to space said basket from said housing side wall, said basket including a side, stop means protruding exteriorly of said basket side in a spaced relationship from said basket marginal edge, said stop means located adjacently under said housing shoulder, a filter bag having a shape retaining edge portion, said bag fitting removably within said basket through said basket opening and having said edge portion overlying said basket marginal edge, said basket stop means for contacting said housing shoulder to prevent removal of said basket from said housing when said bag is removed from said basket for cleaning or replacement, said shoulder opening means for accomodating said stop means as said basket is first fitted into said housing and then rotated to position said stop means adjacently under said housing shoulder with said basket marginal edge contacting said shoulder, an inlet port and an outlet port located in liquid flow communication through said basket and bag.
Specification