Blade holder having displacement-dependent spring force...

Details Blade holder having displacement-dependent spring force... Blade holder having displacement-dependent spring force...

2007-10-23

2007-10-23

Peterson, Kenneth E. (Department: 3724)

Cutting

Rotatable disc tool pair or tool and carrier

Tool pair comprises rotatable tools

C091S508000

Reexamination Certificate

active

10741163

ABSTRACT:
A blade holder for cutting machines includes a blade head held on a raising and lowering device and an adjustment mechanism for a circular blade that is held on the blade head. The adjustment mechanism, for the movement of the circular blade between a cutting position and a ready position, is provided with an adjustment piston rod having an adjustment piston that is guided in a chamber of the blade head housing and can be moved by compressed air. The adjustment piston rod is biased by a compression spring into the ready position of the circular blade. The piston surface of the adjustment piston has a cross-sectional area that is configured such that as the path of the adjustment piston in the direction of adjustment increases, the piston surface that is acted upon by compressed air increases.

REFERENCES:
patent: 3819021 (1974-06-01), Schacher et al.
patent: 3892156 (1975-07-01), Johnstone
patent: 4905554 (1990-03-01), Cavagna
patent: 5247865 (1993-09-01), Kroger et al.
patent: 41 14 059 (1992-11-01), None

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