Fluent material handling – with receiver or receiver coacting mea – With guard or screen for operator
Patent
1998-11-24
2000-11-07
Recla, Henry J.
Fluent material handling, with receiver or receiver coacting mea
With guard or screen for operator
141 4, 141 38, 141114, 141313, 2063041, 296 373, 150154, B65B 104
Patent
active
061421928
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to a safety device for use when inflating a pneumatic tire and a method of inflating such a tire using the safety device. The invention will find particular application in the tire servicing industry as well as in use by vehicle owners.
2. Background
It is not unknown for tires to explode when being inflated. Previously split ring commercial vehicle wheels with inner tubes were inflated after being clamped in a mechanical arrangement called an H-frame. The H-frame is a box frame construction especially designed for use when inflating split ring wagon wheels. Whilst the H-frame may contain the effects of an exploding tire by its presence adjacent the tire, the H-frame does not provide the desired degree of protection to fitters when inflating a tire. The fitters, when inflating the tire, could be positioned in one of many locations around the tire and H-frame.
As a tire bursts, there is a rapid release of highly compressed air and ejection of tire debris. This exposes the fitter who is inflating the tire to personal injury. This is undesirable. Tubeless tires are commonly used in modern tires. The H-frame is not used when inflating modern tires.
It is an object of the present invention to suggest a solution to the problem of risk of personal injury to tire fitters whilst inflating a tire for all kinds of pneumatic tires. For example, the invention is applicable to 40 ton wagon wheels having double or super single tires. The invention can also be used with heavy plant vehicle tires, as well as cars and even bicycle tires.
SUMMARY OF THE INVENTION
Accordingly, the invention comprises a method of inflating a pneumatic tire comprising: putting a bag over the tire so that it substantially envelops the exposed outer surface of the tire; and, inflating the tire, whereby the bag is capable of containing the debris of the explosion, whilst allowing the compressed air from the tire to escape, were the tire to explode.
In a further aspect of the invention there is provided a bag fitted over a tire so that the bag substantially envelops the exposed outer surface of the tire, whereby the bag is capable of containing the debris of explosion whilst allowing the compressed air from the tire to escape, were the tire to explode.
In preferred embodiments of both aspects of the invention, the bag is provided with an opening through which a tire can be inserted for inflation and retracted when inflated. Preferably, the bag is sized and shaped to correspond to the size and shape of the tire. The bag may be a close fit to the tire.
Preferably, the opening comprises a restraining means for resisting deformation or expansion of the opening. Preferably, the opening is elasticated. The opening may be provided with an elasticated rim which may be a hem through which an elasticated cord runs. The ends of the elasticated cord may be held together by a retaining member crimped onto the ends of the cord. Continuity of the cord is realized, in the preferred embodiment, by placing the two ends of the cord into the corresponding ends of a bore of a tube, such as a stainless steel or other metal pipe, which is then crimped so as to grip the ends of the cord.
Preferably, the cord is elastic. It need not be. For example, a non-elastic drawstring could be used.
Alternatively, or in addition, the opening may be provided with one or more straps across the opening.
In a preferred embodiment, the bag is substantially cylindrical. The bag may comprise a front and/or a rear wall.
In a preferred embodiment of the invention, the bag comprises front and rear walls which extend over substantially the entire side walls of the tire.
Preferably, the bag comprises the opening in a rear wall through which a tire can be inserted and retracted and a further opening in the front wall for insertion of an inflating device for inflating the tire. Preferably, when the first and further openings are provided, these are substantially opposite one another and/or of substantially the same siz
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patent: 4126169 (1978-11-01), Magnuson et al.
patent: 4352382 (1982-10-01), Weidler
patent: 4410021 (1983-10-01), Blevins et al.
patent: 5439727 (1995-08-01), Riggs et al.
Dickinson Michael Cecil
Oldham Adrian
Maust Timothy L.
Recla Henry J.
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