Resilient tires and wheels – Spring wheels – Deformable ground engaging part
Patent
1989-06-09
1990-08-07
Stormer, Russell D.
Resilient tires and wheels
Spring wheels
Deformable ground engaging part
152 11, B60C 710
Patent
active
049459627
ABSTRACT:
A side web non-pneumatic tire ("SWNPT") is integrally molded from a stiff, resilient elastomeric material with particular specifications, to form a unitary honeycomb structure bounded by integrally molded outer and inner cylindrical coaxial and coextensive members ("hoops"), and, a single side web member. The outer hoop is supported and cushioned by the honeycomb which comprises a plurality of circumferentially spaced apart, angularly oppositely directed planar rib members (ribs) bounded by the side web on one side only. The side web, preferably on the outboard edge of the hoops, connects the hoops near their outboard edges. The opposite side surfaces of the side web lie at an angle .theta. in the range from 0.degree. to 30.degree. on either side of vertical to the rotational axis of the SWNPT. The ribs extend axially along the inner and outer hoops, connecting them, and the outboard edges of all the ribs lie upon the inboard face of the web. The ribs on each side are angled at opposite angles in the range from 15.degree. to 75.degree. to radial planes which intersect them at their radially inner ends. A rubber tread is secured to the outer surface of the structural elements of the SWNPT provide a load-supporting outer hoop. The coaction of the structure which, in operation, is subjected to continuous compression and tensile forces as it travels over the ground. Deformation and buckling characteristics of the SWNPT are derived from the honeycomb structure of an elastomer which provides the SWNPT with "ride" and "handling" comparable to those of a conventional pneumatic tire. The outer hoop has a vulcanized rubber tread secured to the hoop's outer surface to withstand travel over a road surface. The unribbed face of the single side web may be faced with an elastomeric sidewall to resemble the sidewall of a conventional pneumatic tire.
REFERENCES:
patent: 1258573 (1918-03-01), Johnstone
patent: 2298142 (1942-10-01), Martin
patent: 4832098 (1989-05-01), Palinkas et al.
Csontos Alan A.
Lobo Alfred D.
Stormer Russell D.
The Uniroyal Goodrich Tire Company
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