Abstract 1. A filter comprising a cylindrical housing having one integral end wall, an end disk mounted to the open end of said housing, said end disk having an outlet disposed at the center of said end disk and at least one inlet disposed about the periphery of the outlet, and an elongate filter element having a length greater than the length of said housing, said filter element having a return path interior thereof, said filter element being disposed within said housing along a tortuous path with said return path communicating with said outlet, said tortuous path comprising a first portion at the end of said filter element adjacent said outlet directed axially with respect to said housing and a second portion defining a spiral configuration closely wound about said first portion so that said filter element substantially fills the interior of the cylindrical housing to maximize the filter surface available in said housing.
A filter comprising a cylindrical housing having one integral end wall, an end disk mounted to the open end of said housing, said end disk having an outlet disposed at the center of said end disk and at least one inlet disposed about the periphery of the outlet, and an elongate filter element having a length greater than the length of said housing, said filter element having a return path interior thereof, said filter element being disposed within said housing along a tortuous path with said return path communicating with said outlet, said tortuous path comprising a first portion at the end of said filter element adjacent said outlet directed axially with respect to said housing and a second portion defining a spiral configuration closely wound about said first portion so that said filter element substantially fills the interior of the cylindrical housing to maximize the filter surface available in said housing.
Claim 2
Dependent Claim
152 words
A filter comprising a cylindrical housing having one integral end wall, an end disk mounted to the open end of said housing, said end disk having an outlet disposed at the center of said end disk and at least one inlet disposed about the periphery of the outlet, and an elongate filter element having a length greater than the length of said housing, said filter element having a return path interior thereof, said filter element being disposed within said housing along a tortuous path with said return path communicating with said outlet, said tortuous path comprising a first portion at the end of said filter element adjacent said outlet directed axially with respect to said housing and a second portion defining a spiral configuration closely wound about said first portion so that said filter element substantially fills the interior of the cylindrical housing to maximize the filter surface available in said housing.