Air filtering method and apparatus

An air filtering apparatus comprising:

• (a) a filter panel defining a filter plane and a fold plane and having a plurality of pleats formed of alternating peaks and valleys, said filter panel further including an elongated upper end cap and an elongated lower end cap, said pleats being bonded to said upper and lower end caps;
• (b) a housing having an air inlet and an air outlet;
• (c) means for supporting the filter panel within the housing such that air can flow through the filter panel when passing from the air inlet to the air outlet;
• and
• (d) means for applying a force to the filter panel having a filter plane component and a relatively insubstantial fold plane component, said force being in a parallel direction corresponding to the length of the elongated end caps, whereby the filter plane component assists in the cleaning of the filter panel, and whereby the fold plane component is insufficient to collapse the pleats.

An air filtering apparatus comprising:

• (a) a housing having an air inlet and an air outlet;
• (b) a filter assembly having resilient pleated filter media formed into a plurality of alternating peaks and valleys extending from a first end to a second end, the filter assembly defining a filter plane and a fold plane;
• (c) means for supporting the filter assembly within the housing with the first end secured in a fixed position and with the filter assembly disposed for air to flow through the media when passing from the inlet to the outlet;
• and
• (d) means for displacing the filter assembly second end against the resiliency of the media from a rest position to a displaced position in a direction parallel to the filter plane and allowing the second end to return from the displaced position to the rest position, whereby the media is cleaned.

An air filtering apparatus comprising:

• (a) a housing having an air inlet and an air outlet;
• (b) an air filtering assembly having a first filter panel of resilient air filtering media and a second filter panel of resilient air filtering media, the filter panels each having a first end and a second end;
• (c) means for joining the second ends of the panels such that the first ends of the panels are retained in spaced apart relation with opposing surfaces of the panels defining a filter chamber having an opening between the spaced apart first ends;
• (d) means for supporting the filter assembly within the housing with the first ends disposed in a fixed position and with the filter assembly disposed within the housing for air to flow through the panels when passing from the inlet to the outlet and with the joined second ends assuming a rest position;
• and
• (e) means for displacing in a parallel direction the joined second ends against the resiliency of the panels to a displaced position and releasing the joined second ends at the displaced position, wherein the resiliency of the panels returns the second ends to the rest position, whereby the filter panels are cleaned.