Typewriting machines – Platen or platen-moving mechanism – Cylindrical platen
Patent
1994-07-06
1997-03-25
Burr, Edgar S.
Typewriting machines
Platen or platen-moving mechanism
Cylindrical platen
400661, B41J 1102
Patent
active
056137893
ABSTRACT:
A platen for an impact printer includes a hollow metal pipe having a hollow interior and inner and outer surfaces. A layer of elastic material covers the outer surface. A metal rod is inserted into the hollow interior and has an outer surface spaced from the inner surface to define therebetween a clearance. Such clearance is filled with a liquid.
REFERENCES:
patent: 1977531 (1934-10-01), Sperry
Fowler, "Typewriter sound reduction" 400/661 IBM, Technical Disclosure Bulletin, vol. 12, No. 3, Aug. 1969.
Burr Edgar S.
Citizen Watch Co. Ltd.
Nguyen Anthony H.
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