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US 4,363,643 AGranted
Support means for filter material in a non-electric air cleaner
AssigneeEmerson Electric Co.
InventorsClifford B. Elbrader, Jimmy L. Milum
Life of this patent
Estimating the term…
Abstract
A filter assembly in an air cleaner includes a lower wire-form adapted to receive two opposite ends of a pliable filter material. Spaced wires on the lower wire-form enable manual forming of pleats in the filter material and define the tops of such pleats. A complementary upper wire-form is engageable with the lower wire-form and attached filter to define the bottoms of such pleats.
Claims5
The combination of filter material and support means therefor, wherein said support means comprises:
- a lower wire-form portion,
- said lower portion being generally rectangular and having lower and upper peripheral loops and a plurality of spaced cross-over loops having vertical portions attached to said peripheral loops on two opposite sides of said lower portion;
- said cross-over loops further having horizontal portions extending between said opposite sides in a plane parallel to and above that of said upper peripheral loop;
- means attached to said lower portion for securing opposite ends of the filter material thereto;
- said cross-over loops being effective to enable manual forming of said filter material into a plurality of pleats having tops and bottoms, said tops of said pleats being defined by said cross-over loops;
- flexible tab means attached to the other two opposite sides of said lower portion;
- an upper wire-form portion,
- said upper portion being generally rectangular and having lower and upper peripheral loops and a plurality of spaced cross-over loops having vertical portions attached to said peripheral loops on two opposite sides of said upper portion;
- said cross-over loops on said upper portion further having horizontal portions extending between said opposite sides of said upper portion in a plane parallel to and below that of said lower peripheral loop of said upper portion;
- said lower peripheral loop of said upper portion being engageable by said flexible tab means, and when so engaged, said cross-over loops on said upper portion being effective to define said bottoms of said pleats.
7 more elements
An air cleaner comprising:
- a support frame;
- a filter assembly insertable into said support frame,
- said filter assembly comprising filter material and a wire-form means having a lower and upper portion for supporting said filter material;
- said lower portion comprising means for attaching said filter material thereto, means for enabling the forming of said filter material into a plurality of pleats having tops and bottoms and for defining said tops of said pleats, and means for engaging said upper portion;
- said upper portion comprising means for defining said bottoms of said pleats when said upper portion is engaged with said lower portion.
2 more elements
Dependencies are inferred from the claim text.