Filter attachment for automobile passenger compartment air intake
OwnerCarl Helwig, Dolores F. Helwiginventors
Life of this patent
Estimating the term…
Abstract
A filtering attachment for the air intake of an automobile passenger compartment. A large rectangular sheet of laminated foil, vinyl and paper has a central opening over which is mounted a filter unit. The filter unit comprises two layers of non-woven paper heat sealed together to form a plurality of adjacent pockets, each of which contains pieces of activated charcoal. A fine mesh screen is mounted in overlying relationship to the filter unit. The attachment is mounted in overlying relationship to the air intake of the automobile so that all air entering the passenger compartment passes through the filter unit.
Claims6
The combination of a filter attachment and an automobile, said automobile having a passenger compartment, a hood and an air intake for said passenger compartment, said air intake being disposed beneath or adjacent to said hood, said attachment being positioned in overlying relationship to said air intake, said attachment having a filter unit, said filter unit comprising two layers of porous flexible non-woven paper, each layer containing thermoplastic material, said layers being heat sealed together to form a plurality of adjacent pockets extending continuously across the major portion of said air intake, each of said pockets containing a plurality of small pieces of activated charcoal, said attachment having a sheet surrounding said filter unit, said sheet closing off all of the portions of said air intake except those beneath said filter unit, whereby all air passing into said passenger compartment through said air intake passes through and is filtered by said filter unit.
Dependencies are inferred from the claim text.