Stud unit and skid-proof tire having the same

Details Stud unit and skid-proof tire having the same Stud unit and skid-proof tire having the same

1990-06-04

1993-03-30

Ball, Michael W.

Resilient tires and wheels

Tires, resilient

Anti-skid devices

152169, B60C 1116

Patent

active

051980495

ABSTRACT:
Cylinders each having open end and an internal engagement section in the mid-portion thereof are fixed in holes bored on an outer circumferential face of a tire tread. In each cylinder, a stud passing through a through-hole of the engagement section and having an expanded section at the front end thereof is inserted with play. The stud is biased toward the front end of the cylinder by a spring provided between a lid closing the rear opening of the cylinder and the expanded section. When the tire slips on a snow- or ice-covered road, the stud inclines and a large-neck section of the front end of the stud engages the rim of the cylinder to maintain the stud in a projected state. The projected large-neck section bites the surface of the road to prevent slippage. On a dry road, the stud 32 is pushed into the cylinder by the weight of the vehicle against the elasticity of the spring.

REFERENCES:
patent: 3786849 (1974-01-01), Loquist
patent: 4391314 (1983-07-01), Inamoto et al.

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