Very low angle splice for treads

Details Very low angle splice for treads Very low angle splice for treads

B - Operations, Transporting

29

D

B29D 30/46 (2006.01) B29C 65/00 (2006.01)

Patent

CA 2333200

A tread (10) has a first end (12) that is cut at an angle .theta.. The surface created by the cutting of the tread (10) is the splice surface (20). The surface created by the cutting of the tread (10) is called the splice surface (20) of the first end (12). The tread (10) has a tread thickness TT. The angle at which the tread (10) was cut is called the splice angle .theta.. Expressed algebraically, .theta. equals: SL = (TT)/(cosine(.theta.). The application of the invention is especially helpful in tires having thinner treads such as are commonly used in high performance tires where tread thicknesses can be as small as 1 cm (0.25 inches). The preferred embodiment of the invention is a tread with .theta. equal to 82~.

Cette invention concerne une semelle (10) possédant une première extrémité (12) qui est coupée à un angle .theta.. La surface formée par le découpage de la semelle (10) représente la surface de jonction (20), et est également appelée surface de jonction (20) de la première extrémité (12). La semelle (10) possède une épaisseur TT. L'angle auquel la semelle (10) est coupée est appelé angle de jonction .theta.. Sous forme algébrique, .theta. est défini par l'équation SL = (TT) / (cosinus .theta.). Cette invention peut notamment être utilisée dans des pneumatiques qui possèdent des semelles fines, comme celles que l'on utilise couramment dans des pneumatiques à hautes performances où l'épaisseur de ladite semelle peut se réduire à 1 cm (0,25 pouces). Dans un mode de réalisation préféré, cette invention concerne une semelle où .theta. est égal à 82·.

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