| Patent Number |
Title Of Patent |
Date Issued |
| 6409864 |
Method of assembly of pleated filter with spacer insert |
June 25, 2002 |
| A pleat filter medium assembly and method of making the same wherein pleated fibrous filter medium forming troughs between opposed faces of adjacent filter medium pleats serve to include spacer inserts formed from intersecting sets of spaced strands of different cross-sectional thick |
| 6254476 |
Air circulating fan |
July 3, 2001 |
| In a fan for circulating an air stream in an air-treating environment, an improved fan blade structure designed to optimize airflow along the rotational axis of the fan blade within an optimized low decibel sound range and at preselected revolutions per minute. |
| 6230776 |
Apparatus for forming fibrous filter media |
May 15, 2001 |
| A method, apparatus and filter unit product wherein filter media fibers are fed from a media supply source to a mat forming interchangeable and movable contoured surface to contour shape a filter media mat into a preselected form for subsequent movement to a transfer zone for further |
| 6165244 |
Filter media with fluid stream positioned fibers |
December 26, 2000 |
| A filter including a fibrous filter medium mat, having an upstream dirty fluid inlet and a downstream clean fluid outlet, with a majority of the filter medium fibers oriented in a substantially unrestrained, aligned direction so as to be aligned with the direction of fluid stream flow, t |
| 6165242 |
Pleated filter media with crest spacers and method of making |
December 26, 2000 |
| A pleated filter and method of making the same wherein the crests of pleated filter medium include nesting daubs of pleat spreading and pleat maintaining material located at the crests to define free flow valleys between opposed pleat faces for efficient passage of a fluid stream to be |
| 6165241 |
Pleated filter media with strip spacers and method of making |
December 26, 2000 |
| A pleat filter arrangement and method of making the same wherein longitudinally extending sheets of filter media are pleated to include pliable strips adhesively extending between at least one face of the opposed pleat faces to separate the opposed pleat faces so as to allow fluid fl |
| 6159318 |
Method for forming fibrous filter media, filter units and product |
December 12, 2000 |
| A method, apparatus and filter unit product wherein filter media fibers are fed from a media supply source to a mat forming interchangeable and movable contoured surface to contour shape a filter media mat into a preselected form for subsequent movement to a transfer zone for further |
| 6045597 |
Pleated filter with spacer insert |
April 4, 2000 |
| A pleat filter medium assembly wherein pleated fibrous filter medium forming troughs between opposed faces of adjacent filter medium pleats serve to include spacer inserts formed from intersecting sets of spaced strands of different cross-sectional thickness. |
