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US 4,065,841 AGranted
Printing roller
OwnerMax Gysininventor
Life of this patent
Estimating the term…
Abstract
An improved dampening roller produced by grinding a thermoplastic cylinder under conditions causing strands of the thermoplastic material to be abraded away from the surface and redeposited onto the still soft surface of the thermoplastic cylinder and to bond thereto. The particles are deposited at an angle, producing channels which permit edge removal of excess dampening solution, preventing liquid buildup at the center of the roller.
Claims6
A roller for the application of liquid substances having a mandrel extending longitudinally along a central axis comprising:
- a. a sleeve of thermoplastic material coaxially surrounding said mandrel and affixed thereto;
- and
- b. a plurality of discrete isolated elongated compressible strands of said thermoplastic material integral with said sleeve along longitudinal narrowed connecting portions of said strands to space portions of said strands from said sleeve for forming liquid collection pockets therebetween, whereby the liquid in the liquid collection pockets is forced outward therefrom when said elongated strands are compressed toward said sleeve.
Dependencies are inferred from the claim text.