US 12,187,080 B2
Tire with a wireless indicator
Jari Ojala, Nokia (FI); Jani Räisänen, Pirkkala (FI); Teemu Soini, Tampere (FI); Pekka Iso-Ketola, Sastamala (FI); Simo Vapaakoski, Tampere (FI); and Tero Taipale, Tampere (FI)
Assigned to NOKIAN RENKAAT OYJ, Nokia (FI)
Filed by NOKIAN RENKAAT OYJ, Nokia (FI)
Filed on Apr. 20, 2023, as Appl. No. 18/304,307.
Application 18/304,307 is a continuation of application No. 16/622,972, granted, now 11,660,912, previously published as PCT/FI2018/050502, filed on Jun. 27, 2018.
Claims priority of application No. 17397517 (EP), filed on Jul. 3, 2017.
Prior Publication US 2023/0249498 A1, Aug. 10, 2023
Int. Cl. B60C 11/24 (2006.01)
CPC B60C 11/243 (2013.01) [B60C 11/246 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A tire configured to rotate about an axis of rotation, the tire comprising:
a tread block forming at least a part of a tread of the tire;
a circuit comprising:
a primary capacitive component comprising a first electrode, a second electrode, dielectric material arranged between the first electrode and the second electrode, and a base capacitor, and
a primary inductive component, the primary capacitive component being electrically connected to the primary inductive component to form an electric oscillator; and
an interrogator comprising:
an electric source,
a communication circuit, and
a secondary inductive component;
wherein:
the first electrode forms a capacitance with the second electrode,
the primary capacitive component is configured to wear as the tread wears so that the capacitance changes, wherein the capacitance change affects an angular resonant frequency of the circuit,
the base capacitor is configured not to wear in use,
at least a part of the primary capacitive component is arranged a first distance apart from the tread and inside the tread block,
at least a part of the primary inductive component is arranged a second distance towards the interior of the tire from the tread, the second distance being greater than the first distance, wherein at least a part of the primary capacitive component is configured to wear before the primary inductive component,
the secondary inductive component is arranged on a same side of the tread as the primary inductive component, and
at least a part of the secondary inductive component is arranged a third distance apart from the tread, the third distance being greater than the second distance.