Patent ID: 6089291
Filing Date: 2000-07-18
Classification: B60C

Abstract:
A self-tensioning device for snow chain (2) comprising:an outer element (3) closable in a ring, suitable to be placed on an outer side of a wheel (1), said outer element comprising a terminal portion (7) and a storage block (20) containing an elastic element (21), said terminal portion (7) suitable to be pulled to bring the chain (2) under tension, said elastic element (21) able to be connected to an end of said terminal portion (7);an inner element that can be closed in a ring, suitable to be placed on an inner side of the wheel (1), said inner and outer elements being joined by variously composed elements (10) achieving traction on the wheel's tread; and,a non-return block (5) which allows said terminal portion (7) to slide therethrough only in a direction of the tensioning of said chains (2) and not in an opposite, slackening direction, said elastic element (21) able to constrain, tension and retain said terminal portion (7) by being connected to said end after passage of said end through said non-return block (5) in said direction of the tensioning.