Air filtering unit including a clamping assembly

Claim 1

An air filtering unit comprising: a. a first flow-through support member having clamping assembly receiving means spaced from the flow-through opening; b. a flow-through filter housing having opposed surfaces thereon; c. a resilient gas impervious sealing gasket, said gasket being disposed between one of said surfaces of said filter housing and said first support member; d. a second flow-through support member having apertures therein spaced from the flow-through opening thereof, said apertures being in spaced alignment with clamp assembly receiving means of said first support member; and, e. clamping assemblies extending along said filter housing fastening said support members and said filter housing together, each clamping assembly including (1) a shaft member having a threaded portion on at least one end and a fixed flange portion at a selected position thereon, said threaded portion being received by said clamping assembly receiving means of said first support member, (2) a clamp engaging said filter housing, said clamp being slidably mounted for limited movement on said shaft member, (3) compression spring means disposed between said flange portion on said shaft member and said clamp, said spring means being retained by said clamp, said threaded portion of said shaft being engaged and adjusted in said clamp assembly receiving means, and (4) means engaging with said second support, said engaging means receiving the opposite end of said threaded portion of said shaft member, said shaft member extending through said aperture of said second support member, and said engaging means fixedly positioning said second support member in relation to said filter housing.