Resilient tires and wheels – Spring wheels – Deformable ground engaging part
Reexamination Certificate
2002-04-26
2004-01-27
Stormer, Russell D. (Department: 3617)
Resilient tires and wheels
Spring wheels
Deformable ground engaging part
C152S047000, C152S326000
Reexamination Certificate
active
06681822
ABSTRACT:
FIELD OF THE INVENTION
This invention relates to an improved non-pneumatic tire that can be used primarily as a temporary spare tire. The improved tire is designed to replace the conventional pneumatic spare tire.
BACKGROUND OF THE INVENTION
Non-pneumatic tires are old in the art. Non-pneumatic solid rubber tires were in use prior to pneumatic tires. As vehicle speeds increased and ride characteristics became more important the need for a better tire structure emerged. The invention of the pneumatic tire provided a solution to the problems and limitations of solid tires.
The pneumatic tire is an efficient structure that has endured as a solution to conventional vehicle requirements. A pneumatic tire is a “tensile structure”. Tensile structures always contain a compression member for providing a tensile preload in the tensile member. The tensile member can usually accept no compression and the compression member no tension. In pneumatic tires the cords are the tensile members and the compressed air is the compression member.
The primary drawback of a pneumatic tire is that it is pneumatic. Air contained under pressure can and usually does escape at the most inopportune times at least from the driver's viewpoint. It is aggravating to find that the spare tire that has been stored in the trunk for years is also flat.
The present invention has no air under pressure. It is a tire structure that performs similarly to a pneumatic tire without requiring pressurized air.
SUMMARY OF THE INVENTION
The present invention is a non-pneumatic tire comprising a rim and one or more elastomeric materials bonded to the rim or to one another. The tire has an equatorial plane, an annular tread, and an annular elastomeric body having first and second spaced lateral sides equidistant from the equatorial plane and extending between the tread and the rim. The tire body has a plurality of equally spaced arches forming at least a first series of openings extending from the first side to the second side. The first openings having a height at least one-half the height of the tire side.
In one aspect of the invention, each arch of the non-pneumatic tire has a constant radius of curvature.
In another aspect of the invention, the arches form a second series of openings circumferential and radially offset from the first openings. The second openings preferably have a triangular shape due to the arch configuration.
In another aspect of the invention, the first openings have a height of one-half to three-quarters of the tire side.
In another aspect of the invention, the openings in the non-pneumatic tire extend the fill width of the body. The openings may also vary in size across the width of the body.
Definitions
The invention also may be better understood in the context of the following definitions, which are applicable to both the specification and the appended claims:
“Axial” and “axially” are used herein to refer to lines or directions that are parallel to the axis of rotation of the tire;
“Elastomer” means a resilient material capable of recovering size and shape after deformation;
“Equatorial plane (EP)” means the plane perpendicular to the tire's axis of rotation and passing through the center of its tread;
“Footprint” means the contact patch or area of contact of the tire tread with a flat surface at zero speed and under normal load;
“Normal load” refers to the specific design load for the service condition for a tire;
“Pneumatic tire” means a laminated mechanical device of generally toroidal shape (usually an open-torus) having beads and a tread and made of rubber, chemicals, fabric, and steel or other materials;
“Radial” and “radially” are used to mean directions radially toward or away from the axis of rotation of the tire;
“Rim” means a support for a tire or a tire and tube assembly upon which the tire is secured; and
“Tread” means a molded rubber component which, when bonded to a tire body, includes that portion of the tire that comes into contact with the road when the tire is under normal load.
REFERENCES:
patent: 1166314 (1915-12-01), Beckham
patent: 1175151 (1916-03-01), johnstone
patent: 1277789 (1918-09-01), van ness et al.
patent: 1344346 (1920-06-01), Krusemark et al.
patent: 1430100 (1922-09-01), Mitchell
patent: 1495083 (1924-05-01), Krusemark
patent: D68536 (1925-10-01), Lenhoff
patent: 1617870 (1927-02-01), Snider
patent: 1670827 (1928-05-01), sieberling
patent: 1702081 (1929-02-01), Hatfield
patent: 1762905 (1930-06-01), Whitlark
patent: 2620844 (1952-12-01), lord
patent: 2742941 (1956-04-01), Johnson
patent: 3219090 (1965-11-01), Cisclo
patent: 3311149 (1967-03-01), Mathiesen
patent: 4226273 (1980-10-01), Long et al.
patent: 4549592 (1985-10-01), Schroder
patent: 4945962 (1990-08-01), Pajtas
patent: 5042544 (1991-08-01), Dehasse
patent: 5139066 (1992-08-01), Jarman
patent: 5154490 (1992-10-01), Burns
patent: 5265659 (1993-11-01), Pajtas et al.
patent: 5343916 (1994-09-01), Duddey et al.
patent: 5435367 (1995-07-01), Price
patent: 5460213 (1995-10-01), Pajtas
patent: 5787950 (1998-08-01), Muhlhoff et al.
Adams Anthony Dennis
Dill Ronald James
Krawczyk Nancy T.
Stormer Russell D.
The Goodyear Tire & Rubber Company
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