Resilient tires and wheels – Tires – resilient – Anti-skid devices
Patent
1992-10-27
1995-01-31
Weston, Caleb
Resilient tires and wheels
Tires, resilient
Anti-skid devices
152DIG3, B60C 1112
Patent
active
053851897
ABSTRACT:
A pneumatic tire includes a plurality of blocks, each having a narrow area interposed between one set of two sipes which extend substantially in a transverse direction of the tire and wide areas positioned respectively at both sides of the narrow area across the sipes. An average distance H2 from a tire tread surface of the narrow area to bottom portions of the sipes is less than an average distance H1 from tire tread surfaces of the wide areas to the bottom portions of the sipes. Expanded portions may be provided at the bottom portions of the two sipes. A ratio W2/W1 of a length W2 of the narrow area in the transverse direction of the tire to a length W1 of the wide areas in the transverse direction of the tire may satisfy 0.50.ltoreq.W2/W1.ltoreq.0.95. A length, in the circumferential direction of the tire, of at least one side end portion of the narrow area may be longer than a length, in the circumferential direction of the tire, of a central portion of the narrow area. In a vulcanization mold for forming a green tire, a pair of blades for forming a pair of sipes are provided at a bottom portion of a concave portion for forming a block portion. A vent hole is also provided at a bottom portion of an area between the blades. A method of manufacturing a pneumatic tire using the mold is provided.
REFERENCES:
patent: D238768 (1976-02-01), Dubos
patent: D261495 (1981-10-01), Yurkovich
patent: D271958 (1983-12-01), Gorez
patent: D335845 (1993-05-01), Lurois
patent: 2121955 (1938-06-01), Eger
patent: 2848910 (1958-08-01), Bastian
patent: 4945966 (1990-08-01), Ogawa
patent: 5024260 (1991-06-01), Ochiai
Aoki Namito
Ichiki Yasufumi
Tanabe Chishiro
Bridgestone Corporation
Krawczyk Nancy T.
Weston Caleb
LandOfFree
Pneumatic tire with paired sides in the tread does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pneumatic tire with paired sides in the tread, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pneumatic tire with paired sides in the tread will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1098011