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US 5,846,360 AGranted
Filter and method and apparatus for manufacture thereof
OwnerGeorge Gilinventor
Life of this patent
Estimating the term…
Abstract
A filter and method and apparatus for manufacturing the filter. The filter includes a first filter layer and a second filter layer. The first and second filter layers are joined by a ribbon. The ribbon is attached to the first filter layer and the second filter layer through ultrasonic welding. The apparatus includes first and second ultrasonic welders for attaching the first filter layer to one end of the ribbon and the second filter layer to the other end of the ribbon.
Claims15
A method of forming a filter comprising:
- (a) feeding a first sheet material and a second sheet material spaced from one another and with a major surface of each sheet material facing one another;
- (b) feeding at least one ribbon oriented to intersect said major surface of each sheet material;
- and
- (c) bonding each said sheet material to said ribbon while maintaining said first and second sheet materials spaced from one another.
1 more element
A method of forming a filter comprising:
- a) feeding a first sheet material over a first fixed position roller;
- b) feeding a second sheet material over a second fixed position roller in spaced relation with said first fixed position roller;
- c) bending a ribbon into an elongated longitudinal generally u-shape;
- d) feeding said ribbon between said first sheet material and second sheet material;
- e) engaging said ribbon with an anvil;
- f) bringing said u-shaped ribbon on said anvil into contact with each of said first sheet material and said second sheet material;
- and
- g) ultrasonically bonding said first sheet material to said ribbon and said second sheet material to said ribbon.
5 more elements
Dependencies are inferred from the claim text.