Multi-stage filter frame assembly
AssigneeResearch Products Corporation
InventorRichard A. Deering
Life of this patent
Estimating the term…
Abstract
A multi-stage filter assembly having a number of filter media layers, at least one of which is removably mounted to a filter frame, utilizes a retaining clip to hold the filter media in place. The retaining clip is in the form of an elongated strip that extends across the filter media and has its ends disposed within channels formed in the frame. The elongated strip is provided with a centrally located bend that causes the ends of the clip to be urged upwardly into engagement with the framework and causes a portion of the clip to be urged downwardly into engagement with the filter media.
Claims7
A multi-stage air filter assembly comprising:
- a first filter layer having its outer edges disposed within a channel defined by the top, bottom and side walls of a metal frame,
- at least one additional filter layer disposed in a freely overlying relationship to said first filter layer, and
- a plurality of elongated retaining means extending across said additional filter layer and having a first end removably disposed within a first frame channel and a second end removably disposed within a second channel opposite said first channel, said retaining means having at least one bend disposed along its length whereby said first and second ends are urged upwardly away from said additional filter layer and into engagement with a frame wall and a portion of said retaining means is urged into contact with said additional filter layer.
A multi-stage air filter assembly comprising:
- a first filter layer having its outer edges disposed within a channel defined by the top, bottom and side walls of a metal frame, with at least one of said top and bottom walls having a lip integral with and extending from the inner edge of said wall and into engagement with said first filter layer,
- at least one additional filter layer disposed in a freely overlying relationship to said first filter layer, and
- a plurality of elongated retaining means extending across said additional filter layer and having a first end extending through a notch in said lip so that said first end is removably disposed within a first frame channel and said retaining means having a second end extending through a notch in said lip so that second end is removably disposed within a second channel opposite said first channel,
- said retaining means having at least one bend disposed along its length whereby said first and second ends are urged upwardly away from said additional filter layer and into engagement with a frame wall and a portion of said retaining means is urged into contact with said additional filter layer.
Dependencies are inferred from the claim text.