Abstract:
An underground mine tire 20 having a nominal bead diameter of 20.0 inches or less has a carcass, a tread 25 and a pair of rubber sidewalls 23, each extending along the outer periphery of the carcass 21 below the tread 25. The tire 20 has a nominal bead width D greater than 8.50 inches and an overall diameter of less than 55 inches. The carcass 21 has at least one radial steel cord reinforced ply 24.
Abstract:
A tire, and an apparatus and method for forming a tire. The tire may either be a tubed or tubeless tire, and is filled with a mixture of virgin rubber and small rubber pieces. Preferably, a machine grinds the core of used flatproofed tires, or pieces thereof, into a finely communicated pulverulent. The pulverent is mixed with liquid virgin flatproofing material, such as a polyurethane. An injector introduces this mixture, into the core of a tire, typically through a valve. The core of the tire is preferably substantially filled with this mixture. The injector may take the form of one or more elongated screws and the mixing may occur as the ground rubber is being conveyed by the screw.
Abstract:
A method for expanding and curing formable elastomeric material 2, which is placed in the cavity 14 of a previously molded tire 10, is disclosed. The tire 10 when filled with foamable rubber material 2 is mounted on a curing rim 20 and contacted with heat to simultaneously foam and cure the elastomeric material 2 within the tire cavity 14. The curing rim 20 has a finished or a coated surface 30 that permits the cured foam filled tire 10 to be removed after curing by slipping the cured tire 10 off the coated surface 30 of the curing rim 20.
Abstract:
A wheel for a vacuum cleaner nozzle or for a vacuum cleaner having a central part (10a, 10b) of comparatively hard material to which a tread is secured. The tread (14) is formed from a soft material having a low friction coefficient, such as a felt material.
Abstract:
A lightweight, filler core tire construction for automotive and other vehicles, having a flexible composite outer layer structure and an inner flexible honeycomb core with a radial relief and said honeycomb is bonded to said outer layer, eliminating thus fully or partially pressurized air from the tire and increasing the safety of driving, damage resistance, and minimizing servicing of the tire. The structures are preferably made of a polyurethane polymer and various fibers and do not require a split rim for mounting and dismounting said tire.
Abstract:
The preferred embodiment is directed to a pneumatic tire having a plurality of layers of high density foam rubber formed therein and methods of manufacturing and installing the layers therein. The preferred method of forming the layers of fill to be inserted in the pneumatic tire casing includes the following steps. Forming an elongated strip of elastomeric material of a size sufficient to form at least two concentric layers in a predetermined size casing of a pneumatic tire at a manufacturing site. At least one dimension of the elongated strip is the same as at least one dimension of the two concentric layers when inserted in the casing. Formulating data sheet having information from which the elongated strips can be cut to form the at least two layers for at least one predetermined condition. Transporting the elongated strip of the elastomeric material and the data sheet to an installation site remote from the manufacturing site.
Abstract:
A wheel (10) having a tire (12 ) is provided with a liquid molasses as a ballast (100). The tire can be tubeless or can contain a tube (28). The molasses is preferably desugared (less than 30% by weight sucrose) and is able to sustain a temperature of -30.degree. F. (-34.4.degree. C. and below) without freezing. The molasses is non-toxic, non-corrosive and non-abrasive and is environmentally friendly. Farm, utility, industrial, lawn and garden and commercial vehicles use ballasted tires.
Abstract:
A molded polypropylene foam tire core suitable for all types of wheels. The core may be inserted, in one or more sections, into a pneumatic-type tire casing and mounted on a wheel rim to provide puncture-proof and rupture-proof internal support for said tire casing.
Abstract:
A method for making a polyurethane elastomer tire fill composition wherein a mixture of a) a low functionality (2.0-2.3) 4,4'-diphenylmethane diisocyanate, such as a carboiimide-modified (2.0 functionality) 4,4'-diphenylmethane diisocyanate and b) a nonreactive diluent, such as an oil extender, is mixed with a polyol, such as polypropylene oxide triol. The reaction mixture is inserted into a tire casing under pressure and cured therein to form an essentially void-free tire filler. The tire fill composition maintains pressure within the tire during use and has excellent physical and thermal properties. No prepolymer step is necessary in the method.
Abstract:
The running characteristics of a tire for a wheel are improved to provide a more quiet run, by attaching to an inner and/or outer surface of the tire vibration absorbing elements. Vibration absorbing elements may even be inserted into the tire material itself. The vibration absorbing elements are secured to the tire surface in a force and moment or torque transmitting manner by vulcanization or by a suitable adhesive. A strap may hold the individual absorbing elements together or the elements may form integral parts of the strap which is secured to the tire surface, for example, by a rubber vulcanizing operation. The vibration absorber elements may be secured to an inner tube instead of to the tire.