Patent ID: 7588613

Claim:
A movable filter system, comprising: (a) a filter assembly comprising one or more filters; and (b) a telescoping rod assembly connected to said filter assembly, said telescoping rod assembly being movable between a first extension length to configure said filter assembly in an operative position and a second extension length to configure said filter assembly in a maintenance position, said telescoping rod assembly being configured to maintain a rotational positioning of said filter assembly in said operative position and said maintenance position, said telescoping rod assembly including a plurality of telescoping rods comprising: a first rod of said plurality of telescoping rods having a first rod outer surface of a first rod outer diameter, said first rod outer surface having a first rod keystock positioned thereon; a second rod of said plurality of telescoping rods having a second rod outer surface of a second rod outer diameter and a second rod inner surface, said second rod inner surface having a second rod inner diameter and having a groove therein configured to receive said first rod keystock, said second rod inner diameter being greater than said first rod outer diameter; and said first rod configured to be telescopically received within said second rod when said telescoping rod assembly is in one of said first extension length and said second extension length.