Maintenance-free vehicle and cart tire

Details Maintenance-free vehicle and cart tire Maintenance-free vehicle and cart tire

1990-06-08

1992-02-25

Gallagher, John J.

Resilient tires and wheels

Tires, resilient

Cushion

152327, B60C 0700, B60C 0724

Patent

active

050904647

ABSTRACT:
A maintenance-free, non-pneumatic rubber tire for wheels of slow-moving vehicles such as wheelchairs, push-chairs and carts has a base (14) a rim (15), side walls (13) and a tread (11) of generally constant thickness along the width of the tire. The central region of the tire has one or two continuously annular empty space(s) (16) dimensioned to control the spring constant of the tire to a desired value. The tire also contains reinforcement e.g. in the form of a layer of cord (17) or spiral wire.

REFERENCES:
patent: 1435566 (1922-11-01), Vandereey et al.
patent: 1466133 (1923-08-01), Lundstrom
patent: 1612294 (1926-12-01), Krepokavich
patent: 2345068 (1944-03-01), Pfeiffer
patent: 3062254 (1962-11-01), Keefe
patent: 4033395 (1977-07-01), Berg
patent: 4493355 (1985-01-01), Ippen
patent: 4514243 (1985-04-01), Moore
"Carefree Cycling with Carefree Tires", Rubber Developments, vol. 27, No. 1, 1974.

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