Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1976-08-23
1978-01-03
Guest, Alfred R.
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
B41F 3100
Patent
active
040658414
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.
REFERENCES:
patent: 1457276 (1923-05-01), Isherwood
patent: 1568401 (1926-01-01), Griffith
patent: 2176835 (1939-10-01), Cumfer
patent: 2616367 (1952-11-01), Sprung
patent: 2675596 (1954-04-01), Singer
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