Dampening system

Details Dampening system Dampening system

1982-02-09

1984-09-25

Hayes, Monroe H.

Photocopying

Projection printing and copying cameras

Step and repeat

355 72, G03B 2742

Patent

active

044732929

ABSTRACT:
In a dampening arrangement for oscillations occurring in rapidly stepwise displacements of a cross slide system of a circuit printing machine, the moving part is with one portion thereof immersed in a viscous dampening liquid within a cavity. Between the walls of the cavity and the outer surfaces of the immersed portion there is formed a small gap, the width of which is calculated by a special formula and which is in the range between 10.mu. and 100.mu., preferably between 25.mu. and 60.mu., and optimally about 40.mu.. Within this gap a friction between the moving part, the liquid layers, and the stationery surface occurs, so as to dampen any oscillations of the moving part in a short decay time.

REFERENCES:
patent: 3107752 (1963-10-01), McLean
patent: 4330103 (1982-05-01), Thuries et al.
Article "High-Viscosity Silicone Fluids for Mechanical Applications", Product Engineering, Jul. 1954.

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