Abstract:
A hollow EVA foam tire structure includes a tire, a core and a rim. The core includes a plurality of sections substantially arranged into an annular shape and being hollow on both sides. A plurality of protruding block sections is disposed on the internal side of the flange section of the core extended from the accommodating space of the tire, and both sides of the tire are covered by the rim having two corresponding external flange surfaces at the external sides. Pointed splinters are disposed on the external flange surface and protruding block sections are protruded from the rim. Thus, the protruding block sections of the wheel core are alternatively and mutually engaged. Therefore, when the two corresponding rims are securely coupled, the pointed splinters of the rim can be pierced and fixed into the tire, and the internal side of the tire is embedded into the hollow section of the wheel core by a compressing force. Therefore, the tire, the wheel core and the two side rims can be coupled more securely so as to enhance the carrying capacity of the tire by the wheel core.
Abstract:
A wheel assembly includes a tire having bead seat angle in the range 10° to 12°, preferably 11°, and an aspect ratio of less than 60%. Reduced bounce and improved bead retention is obtained. The flange is curve and supports the sidewall of the tire in flexure to reduce rolling of the bead seat;
Abstract:
The present invention is related to a demountable tire rim (1) with a spare inner wheel (3) with antifriction systems which allow running with tubeless tires, without their deterioration; the demountable tire rim (1) comprises two complementary annular parts (4)(5) provided with reciprocal threaded coupling means (10). The body of the demountable tire (1) comprises two complementary annular parts (4)(5) which consist of a first part (4) and a second part (5). Both complementary annular parts (4)(5) are provided with each side holding rims (6) (13) for the tire (2). The modifications of the tires (2) have the purpose of adapting them to run under flat condition and determine a guided movement on it, and in relation to the tire rim, it decreases the rotating displacement on it.
Abstract:
A wheel assembly 10 for a tubeless pneumatic tire 11 is described. The wheel assembly 10 has a rim 12 for supporting the tire 11, a flange 14 removably attached to the rim 12, and a plurality of spaced studs 34 attached to the rim and threaded nuts 32 for securing the flange to the rim and for relieving pressurization from a mounted and inflated tire 11 in the event one of the threaded nuts 32 is loosened.
Abstract:
A take-apart tire and wheel assembly including a multi-piece wheel rim having axially spaced bead flanges, a rim base, and a pneumatic tubeless tire, preferably adapted to removably receive in its tire inflation chamber a safety runflat insert. The wheel assembly also includes a safety vent for preventing inflation of the tire cavity in the event of improper assembly or disassembly of the safety tire and wheel assembly, including an O-ring seal disposed in a triangular cavity formed between opposing portions of rim segments of the wheel assembly, and mounting studs and associated nuts that releasably clamp the rim segments together with the O-ring captured in compression therebetween. The outboard wheel rim segment includes a wheel mounting disc and may also have a safety inflation valve coupling fixed to the outboard rim segment. An interior air passage of the coupling communicates with the tire cavity and has a minimum cross sectional dimension which prevents insertion therethrough an air inflation valve provided on an inner tube of sufficient size to fit within said tire cavity and capable when inflated of rendering said wheel and tire assembly normally operable for supporting its normal vehicle load in a run-mode of the vehicle.
Abstract:
A light metal wheel rim apparatus is provided with an increased wheel disk area in proportion to the overall diameter of the rim. The light metal wheel rim is constructed of at least two component parts. A first component part includes an inner rim flange and rim ring. A second component part includes a wheel disk portion, upon which a design may be configured, and an outer rim flange. The first and second component parts are joined in a manner which maximizes the area of the wheel disc relative to the overall dimensions of the light metal wheel rim.
Abstract:
A take-apart wheel rim and disc assembly for use in a safety tire and wheel assembly which includes a pneumatic tubeless tire. The wheel includes an inboard rim part, a wheel mounting disc having an outer marginal flange telescoped into and secured to the inboard rim part, the disc flange having an outer surface protruding axially outboard beyond and clear of the inboard rim part. An outboard rim part telescopically received from an axially outboard direction over the disc flange, an O-ring seal disposed between the disc and opposing surfaces of the inboard and outboard rim parts, and a clamp ring for axially clamping the outboard and inboard rim parts together with the O-ring captured in compression between the disc and the opposing surfaces of the rim parts to seal against air leakage. The disc has an air bleed vent structure outboard of the O-ring and normally sealed from the tire cavity by the O-ring. The clamp ring and associated fasteners engage and exert clamping stress on the outboard rim part over a range of relative movement therebetween in the axial direction relative to the inboard rim part which is sufficient to permit loss of sealing pressure at the O-ring prior to loss of clamping engagement to thereby permit air leakage past the O-ring through the air bleed vent structure to atmosphere within the range of relative movement.
Abstract:
A safety tire and wheel assembly which includes an improved multiple-piece wheel rim assembly for preventing inflation and/or venting to atmosphere when the rim assembly components are improperly assembled, and an improved safety insert mounted on the wheel rim base for supporting the tire tread during operation following loss of inflation pressure. The wheel rim assembly includes telescoping rim segments and an O-ring normally captured in compression between opposing portions of the rim segments for sealing the tire cavity. Air bleed passages are formed in one rim segment adjacent the sealing ring externally of the cavity to vent the tire cavity to atmosphere when sealing compressive stresses are absent from the O-ring as in the event of improper assembly or disassembly. The safety insert includes a ledge normally disposed within the tire cavity and having a radially facing surface roughened by a circumferential series of axially extending splines. Encapsulated lubricant is carried by the insert in a position to be fractured by the tire tread upon loss of inflation pressure so that the lubricant is spread over the tread-engaging insert surface and retained adjacent the surface between the splines.
Abstract:
A tire or tire and wheel assembly in which the sidewalls are pretensioned before being loaded and/or deflected. Various pretensioning means are disclosed including some for displacing the beads radially, axially or circumferentially, and some for applying a radially outwards force to the tread. There is thus a tendency to lengthen the or each sidewall thereby creating pretension.
Abstract:
A vehicle wheel having a detachable rim ring with a rim flange. The fastening means for the rim ring may be covered by a detachable plate which also seals off an air duct which leads to the hollow interior of the tire.