Brush seal bristle cutting method

Details Brush seal bristle cutting method Brush seal bristle cutting method

1994-05-11

1996-09-17

Husar, John M.

Brush, broom, and mop making

Processes

A46D 108

Patent

active

055561721

ABSTRACT:
A method for cutting the bristles which form the sealing ends of a brush seal, in which the tightly packed bristles are infiltrated with a liquid binder which is then hardened to form a rigid composite of bristles and binder. The resulting rigid composite can then easily be machined (cut or ground) without damage to the bristles. For metallic bristles, conventional fine line cutting methods such as single point turning or milling, are employed. Ceramic bristles, are machined by conventional bore grinding. After machining, the binder material may be immediately removed by melting or dissolution. Alternatively, the binder may be left on the bristles to provide protection during subsequent machining or handling procedures. The method provides accurate, smooth cuts while offering a combination of low cost and high production rates.

REFERENCES:
patent: 3836199 (1974-09-01), Blankschein
patent: 4678113 (1987-07-01), Bridges et al.
patent: 4730876 (1988-03-01), Werner et al.
patent: 4839997 (1989-06-01), Pritchard
patent: 5183197 (1993-02-01), Howe

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