Bobbin for use in producing a mesophase pitch derived carbon yar

Details Bobbin for use in producing a mesophase pitch derived carbon yar Bobbin for use in producing a mesophase pitch derived carbon yar

1980-12-17

1983-02-01

Christian, Leonard D.

Winding, tensioning, or guiding

Bobbin or spool

Double-headed spool

24211832, B65H 7512, B65H 7514

Patent

active

043711294

ABSTRACT:
A bobbin capable of retaining thermoset yarn during a heat treatment to pyrolyze and carbonize the thermoset yarn to produce a good quality carbon yarn, comprises a cylindrical body made of selected materials; and a layer of carbon felt positioned on the outside surface of the cylindrical body to receive the thermoset yarn and to minimize stress between the cylindrical body and the thermoset yarn during the heat treatment.

REFERENCES:
patent: 2756006 (1956-07-01), Klein
patent: 3107152 (1963-10-01), Ford et al.
patent: 3270980 (1966-09-01), Philips
patent: 3398915 (1968-08-01), Dittrich
patent: 3503708 (1970-03-01), Spry
patent: 3643888 (1972-02-01), Blue
patent: 3993265 (1976-11-01), Parks

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