US 12,522,032 B2Granted

Anti-skid device

AssigneeAffin AS

InventorsChristian Abry, Emil Abry, Crostopher John Kavanagh, Harald Furu

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Abstract

This present invention relates to an anti-skid device adapted to being mounted on tyres of the vehicle wheels to provide traction and wheel to ground contact enhancement in snowy and icy conditions. The device includes a central hub from which protrudes radially three arms which are extended at the outer end by anti-slip components transversally embracing the tread of the tyre. The inner area of the anti-slip components in contact with the tread is designed to increase friction to prevent circumferential displacement of the anti-skid device. When the car is moving a horizontal depression is formed at tyre-ground contact and this provokes a change in wheel radius. Integrated springs follows the depression by moving radially inwards to ensure that the anti-skid device stays attached to the tyre even when an anti-slip component is at the ground contact point at the bottom of wheel. A fastening handle integrated into the hub secures the device on the wheel by simultaneously tightening the arms radially inwards.

Claims11

Dependent claims

An anti-skid device for enhancing traction on slippery roads comprising:

at least 3 arms protruding radially from a backplate configured to rest against a wheel hub,
each of the arms terminates in an associated anti-slip elements configured to be arranged on a tread surface of the tire,
each of the arms is movably mounted to the backplate to allow extension or contraction of each of the arms in relation to the backplate,
each of the arms has an elongated hole and rack teeth along one side of the elongated hole, a pinion is located centrally on the backplate, the pinion having teeth that engage the rack teeth of each of the arms, when the pinion is rotated in a first direction the arms are extended and the pinion is rotated in a second direction the arms are retracted,
each of the anti-slip elements is equipped with a shoulder arranged to grip behind the tire,
a lock for preventing extension of the arms when the lock is engaged, and
wherein each of the arms is equipped with a compressive joint allowing the inwards displacement of the anti-slip elements to follow a displacement of the tire without in turn displacing the backplate.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/770,080Filed 14 Oct 2020
Priority: NO 2019126222 Oct 2019
Published: US 2022/0410643 A129 Dec 2022
Granted: 13 Jan 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

B60C 27/023
Extending over restricted arcuate part of tread: provided with radial arms for supporting the ground engaging parts on the wheel
B60C 27/0223
Involving lugs or rings taking up wear, e.g. chain links, chain connectors: studded links, i.e. traction enhancing parts located on the link or…
B60C 27/0238
Extending over restricted arcuate part of tread: provided with tensioning means
B60C 27/0246
Provided with tensioning means: resilient pretension