Nokian Tyres Plc

Nokian Renkaat Oyj

Tomi Korkama

Jorma Tikka

Niko Haanketo

Outi Husso

Mikko Jokinen

Niko Nummi

Henri Sakari Kossi

Jouni Juhani Raatikainen

Aki Aro

Juha Kurikka

Samu Lepisto

Tyre portion

Tyre

Tire

A pneumatic tire is provided with sipes, at least some of which have an open top end to the surface of the tread block. An intersection of the sipe with a surface that is geometrically congruent and parallel with the surface of the tread block and arranged a depth apart from the surface of the tread block into the tread block forms a curved line. A first sipe is shaped in such a way, that at all depths (d) within a range from the open top of the first sipe to a first transition depth, the curved line includes at least one deflection point having an inner corner that has a radius of curvature under 0.3 mm. A lamella plate for manufacturing the pneumatic tire, the tread band, or the tread block. Use of the lamella plate for manufacturing a tread block, a tread band, or a pneumatic tire.

Pneumatic tire, a tread band, and a tread block comprising a sipe, and a lamella plate for the manufacture thereof

A tread block arrangement suitable for a tire or for a tread band for a tire. The tread block arrangement comprises a tread block that limits a first primary sipe. The first primary sipe comprises at least a first deep part and a second deep part separated from the first deep part by a first shallow part. A depth of the first deep part is at least three times a depth of the first shallow part and a depth of the second deep part is at least three times the depth of the first shallow part. The first deep part is limited in a longitudinal direction of the first primary sipe by a primary first end wall and a secondary first end wall such that a first angle between the primary first end wall and the secondary first end wall is from 1 degree to 30 degrees. The second deep part is limited in a longitudinal direction of the first primary sipe by a primary second end wall and a secondary second end wall such that a second angle between the primary second end wall and the secondary second end wall is from 1 degree to 30 degrees.

Tread block arrangement having a sipe

Growing community of inventors

Tampere, Finland

Tomi Korkama