Tire tread

Details Tire tread Tire tread

1975-07-11

1976-07-27

Hoffman, Drayton E.

Resilient tires and wheels

Tires, resilient

Anti-skid devices

B60C 1106

Patent

active

039714241

ABSTRACT:
A pneumatic tire has a tread comprising two wide grooves of circumferential orientation and rows of wide grooves of transverse orientation defining circumferential rows of elements in relief. The tread is characterized by the following combination:
A. A middle row and two side rows of elements in relief are formed, separated in each row by grooves of transverse orientation discharging alternately, in the case of the middle row, into the wide grooves of circumferential orientation and, in the case of the side rows, into the adjacent wide groove of circumferential orientation and into the adjacent edge of the tread.
B. The grooves of transverse orientation of each row of elements in relief are connected in pairs by grooves of reduced width and at most the same depth as the depth of the longitudinal and transverse grooves.
C. The sum of the lengths, projected on a meridian section, of the transversely oriented grooves connected in pairs is between 0.75 and 1.5 times the width of the tread.

REFERENCES:
patent: 2584670 (1971-06-01), Verdier
patent: 3012599 (1961-12-01), Benson et al.
patent: 3512567 (1970-05-01), Verdier
patent: 3675700 (1972-07-01), Verdier
patent: 3799231 (1974-03-01), Boileau
patent: 3838725 (1974-10-01), Lejeune
patent: 3926238 (1975-12-01), Vorih

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