Doctoring apparatus and method employing prestressed doctor blad

Details Doctoring apparatus and method employing prestressed doctor blad Doctoring apparatus and method employing prestressed doctor blad

1984-08-13

1989-02-07

Davis, Curtis R.

Cleaning and liquid contact with solids

Processes

Longitudinally traveling work of bar, strip, strand, sheet...

152565, 1525651, 1525652, 1525653, 100174, 241112, 162281, 162 99, 162272, 210396, 210397, 118652, B08B 102

Patent

active

048029289

ABSTRACT:
A doctor blade assembly has a doctor blade supported in a blade holder. The blade has a projecting front edge adapted to be placed in contact with a moving surface to be doctored, and a rear edge adapted to be received in the blade holder. The blade is preloaded in a manner such that tensile stresses are induced in the front edge thereof. The level of such tensile stresses is below the yield strength of the blade material, yet high enough to prevent compressive stresses from developing at the blade front edge as a result of heat being generated by frictional contact between the blade and the moving surface being doctored.

REFERENCES:
patent: 3660863 (1972-05-01), Gerbasi
patent: 4083633 (1978-04-01), Shanly
patent: 4206528 (1980-10-01), Klemz
patent: 4359799 (1982-11-01), Boose
patent: 4451140 (1984-05-01), Saito
patent: 4469434 (1984-09-01), Yamazaki et al.

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