Passenger car pneumatic tire excellent in cornering stability
US4662416A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 21, 1985 |
| Grant date | May 5, 1987 |
| Priority date | — |
| Expiry date | Oct 21, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60C3/04
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A passenger car pneumatic tire excellent in cornering stability, which is characterized in that the following ratio relations are met when the tire is assembled onto a rim with an internal pressure being filled: EQU 0.55.ltoreq.hw/h.ltoreq.0.70 EQU 0.75.ltoreq.tw/w.ltoreq.0.95 EQU 0.17.ltoreq.m/l.ltoreq.0.26 in which hw and h are the height of a point P at the maximum width of a carcass line and the maximum height of a tread as measured from the bead base B of the tire; tw and w are a tread width as measured with reference to intersections Q each between an extension of a center crown curve of the tread and an extension of the outer contour line of the shoulder on a section including a meridian line of the tire and the maximum width of the carcass with reference to the maximum width point P, respectively; and l and m are the length of a line segment joining an intersection S between a perpendicular fallen down to the bead base B from the intersection Q and the carcass line with the maximum width point P and the maximum distance from the carcass line to the line segment, respectively, and that the outer contour line of the shoulder is a curve inwardly concaved or a straight line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.