Abrading – Abrading process – Utilizing shield
Reexamination Certificate
2008-05-06
2008-05-06
Nguyen, Dung Van (Department: 3723)
Abrading
Abrading process
Utilizing shield
C451S029000
Reexamination Certificate
active
11415742
ABSTRACT:
A method of masking includes adhering a removable pressure sensitive adhesive to a masking surface to cover the masking surface and blasting the adhesive and an adjacent target surface with abrasive blast media to remove material forming the target surface wherein the adhesive protects against removal of material forming the masking surface. The blasting media does not abrade the adhesive. The adhesive may be applied in molten form or at room temperature by separating the adhesive from a flexible release liner. The adhesive may be removed by simply peeling the adhesive from the masking surface, leaving the masking surface essentially free of residue. Due to the adhesive characteristics throughout the adhesive, some blast media adheres to the adhesive and forms a barrier layer which repels additional blast media. The adhesive may also be used to adhere a masking device over the masking surface to cover large areas easily.
REFERENCES:
patent: 4093754 (1978-06-01), Parsons
patent: 5912295 (1999-06-01), Oeltjen et al.
patent: 5958170 (1999-09-01), Cetrangolo
patent: 5989689 (1999-11-01), Komatsu
patent: 6037106 (2000-03-01), Komatsu
Williams Casey
Williams Raymond F.
Nguyen Dung Van
Sand & Sebolt
U.S. Technology Corporation
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