Device for producing a two-part tire layer

Details Device for producing a two-part tire layer Device for producing a two-part tire layer

2005-03-15

2005-03-15

Del Sole, Joseph S. (Department: 1722)

Plastic article or earthenware shaping or treating: apparatus

Means feeding fluent stock from plural sources to common...

Extrusion shaping means

C425S133500, C425S190000, C425S380000, C425S463000, C425S467000, C156S394100

Reexamination Certificate

active

06866494

ABSTRACT:
In a road vehicle tire, a two-part layer (2) of elastomeric material is preassembled by co-extruding a first and a second strip (19, 16) through a preforming plate die (26), through which extends at least one pair (27) of tapered flow channels (25a, 25b) having offset, side by side inlets (28, 29) with respective superimposed adjacent lateral portions (30, 32), and substantially coplanar outlets (33, 34) with respective adjacent lateral portions (35, 38) interconnected to define, between the two strips (19, 16), an L-shaped joint (20) wherein a lateral portion (21) of the second strip (16) has an edge (17) substantially contacting a lateral shoulder (22) of the first strip (19), and is superimposed on a thin annular appendix (23) projecting from the shoulder (22) of the first strip (19).

REFERENCES:
patent: 4917164 (1990-04-01), Tsuda et al.
patent: 5424019 (1995-06-01), Miyakawa et al.
patent: 6294119 (2001-09-01), Nakamura
patent: 0 925 903 (1999-06-01), None
patent: 1 103 391 (2001-05-01), None
patent: 04 208443 (1992-07-01), None
patent: 2000 351306 (2000-12-01), None

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