Pneumatic tire for use when deflated

Details Pneumatic tire for use when deflated Pneumatic tire for use when deflated

1976-03-12

1977-11-08

Hoffman, Drayton E.

Resilient tires and wheels

Tires, resilient

Wheel securing means

152353R, 152362R, 152362CS, 152330RF, 152330L, B60C 1700, B60C 1500, B60C 1300

Patent

active

040570924

ABSTRACT:
A pneumatic tire is disclosed to run while flat without the tire coming off the wheel rim and without excessive heat due to the friction from the rubbing of the sidewall portions. A circumferential locking lug on the sidewall exterior adjacent to the rim flange locks over the flange when the tire goes flat, keeping the tire on the wheel rim. To improve stability and to cushion the load while running the tire flat, inserts of cord material or hard rubber may be inserted into the sidewall, or the sidewall thickness may be increased with concentric slots added. Internal friction is decreased by coating the interior of the sidewalls with a lubricant.

REFERENCES:
patent: 2037640 (1936-04-01), MacMillan
patent: 2874745 (1959-02-01), Wann
patent: 3612137 (1971-10-01), Guyot
patent: 3709276 (1973-01-01), Montague
patent: 3717190 (1973-02-01), Boileau
patent: 3739829 (1973-06-01), Powell et al.
patent: 3861438 (1975-01-01), Bertelli et al.
patent: 3951192 (1976-04-01), Gardner et al.

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