Pneumatic tire including two grooves and two rubber parts

Details Pneumatic tire including two grooves and two rubber parts Pneumatic tire including two grooves and two rubber parts

1996-04-30

1998-09-22

Maki, Steven D.

Resilient tires and wheels

Tires, resilient

Anti-skid devices

152209D, B60C 100, B60C 1100, B60C10100

Patent

active

058109536

ABSTRACT:
A pneumatic tire has a tread part with two circumferential grooves continuously extending in the circumferential direction in either side of the tire's equator so as to divide the tread part into a pair of shoulder parts and a central part. The central part has a surface utilizing successive convex curves composed of a pair of inner groove walls, which extend inside in the axial direction of tire along a curve convexed outwardly in the radial direction from inner bottom edges of the circumferential grooves, and a central ground-contact surface, which is smoothly connected between the pair of the inner groove walls. The central ground-contact surface is substantially in contact with a virtual tread line connected between outer surfaces of the shoulder parts.

REFERENCES:
patent: D330882 (1992-11-01), Hasegawa
patent: 3931844 (1976-01-01), Mirtain
patent: 4044810 (1977-08-01), Taniguchi et al.
patent: 4385653 (1983-05-01), Okazaki et al.
patent: 4947911 (1990-08-01), Ushikabo et al.
patent: 4986324 (1991-01-01), Suzuki et al.
patent: 5046542 (1991-09-01), Ohta et al.
patent: 5109902 (1992-05-01), Kobayashi
patent: 5225011 (1993-07-01), Takino et al.
patent: 5323824 (1994-06-01), Swift et al.
patent: 5337815 (1994-08-01), Graas
Patent Abstract of Japan, vol. 016, No. 299 (M-1274) 2 Jul. 1992 & JP-A-04 081 305 (Bridgestone Corp.) 16 Mar. 1992.
Patent Abstract of Japan, vol. 016, No. 041 (M-1206) 31 Jan. 1992 & JP-A-03 246 104 (Bridgestone Corp.).
"Tire Materials & Construction," K. Fost, Automotive Engineering, Oct. 1992 .

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