Pulling rolls for use in manufacturing sheet glass
AssigneeCorning Incorporated
InventorsDavid S. Kaiser, Jaime Maldonado
Life of this patent
Estimating the term…
Abstract
Pulling rolls (13) for glass ribbons (11) are provided. The rolls include a shaft (17), a plurality of heat-resistant discs (15) mounted on the shaft in face-to-face contact, and a pair of fittings (25 or 25,31) affixed to the shaft which apply an axial compressive force to the discs. The axial compressive force gives the portions (27) of the roll surface (33) which contact the glass ribbon during use a Shore D hardness at room temperature of between 30 and 55. The rolls achieve a long service life without applying excessive force to the glass ribbon or generating high levels of particulate contamination.
Claims13
A roll for pulling a glass ribbon comprising:
- (a) a shaft having a first end and a second end;
- (b) a plurality of heat-resistant discs mounted on the shaft in face-to-face contact, said discs having circular outer peripheries which together form a roll surface, one or more portions of which are adapted to contact the glass ribbon during use of the roll, said discs comprising refractory ceramic fibers, mica, and a heat resistant binder;
- and
- (c) a pair of fittings affixed to the shaft, said fittings being spaced from one another along the shaft by a distance which causes an axial compressive force to be applied to the discs;
- wherein when the discs are subject to said axial compressive force, the one or more portions of the roll surface that are adapted to contact the glass ribbon have a Shore D hardness at room temperature of between 30 and 55.
Dependencies are inferred from the claim text.