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Resilient insert for tire inflator
| Details |
Inventors: Millray, Robert;
Assignee: Allied Chemical Corporation (Morris Township, NJ)
Primary Examiner: Bentley; Stephen C.
Assistant Examiner: Walsh; Donald P.
Attorney, Agent or Firm: Buff; Ernest D.
The invention is a light, portable, miniaturized tire inflator adapted to fit in a limited space, such as in a tire well for a deflated, space-saving tire in a trunk of an automobile, and adapted to be carried or held in one hand. The tire inflator includes a metal, preferably steel pressure cannister comprising in one embodiment a pressure vessel and a pressure head cap assembly, a pyrotechnic material in the pressure vessel, an ignitor mechanism and a nozzle in the head cap assembly, an internal insulation liner for said pressure cannister to reduce the temperature level of the cannister to a level acceptable to an external insulation, such as plastic foam or paper, of about 350.degree. F, and a resilient insert for example rubber, in the nozzle end to mate and thread in one embodiment, with the metal tire valve threads, and prevent cross threading, while providing a seal with the tire valve for inflation of the tire. The rubber insert also allows the tire inflator simply to be pushed on the valve and form the required seal, rather than threaded thereto, due to the resilient nature of the rubber. |
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DETAILED DESCRIPTION The invention is a light portable, miniaturized tire inflator, the embodiment shown of which is referred to generally by the numeral 2.
The embodiment 2 of the tire inflator includes: a pyrotechnic material 4, an ignitor mechanism, referred to generally by the numeral 6; which may be at either end of the pressure vessel 8 but is shown at the end opposite the nozzle 10, a pressure vessel, referred to generally by the numeral 8; and a nozzle, referred to generally by the numeral 10.
The pyrotechnic material 4 generates substantially non-toxic and non-condensible inflating gas upon ignition and burning to inflate a tire, without a source of stored fluid, either compressed gas or liquefied gas.
The ignitor mechanism 6 in this illustrative embodiment is located adjacent to the pyrotechnic material 4 to ignite and cause the pyrotechnic material 4 to burn.
The pressure vessel 8 holds the pyrotechnic material 4.
The pressure vessel 8 in this embodiment has an pyrotechnic end, at which the ignitor mechanism 6 is located and a tire end at the opposite end of the pressure vessel 8 from the pyrotechnic mechanism 6.
The nozzel 10 is mounted on the tire end of the pressure vessel 8, at the opposite end of the pressure vessel 8 from the ignitor mechanism 6.
The nozzle 10 is adapted to be connected directly to an inlet valve 7 of a tire 9 to inflate the tire 9.
The term "directly" means that the nozzle 10 may be connected to a tire valve 7 without any need for a hose or tube between the nozzle 10 and the tire valve 7.
For example, the nozzle 10 may be screwed on the tire valve 7 or pushed thereon as will be decribed hereafter.
The pressure cannister in this embodiment includes the pressure vessel 8, comprising a chamber 11, and a pressure cannister cap 12.
The chamber 11 has a cylindrical shape, a pyrotechnic end and a tire end.
The tire end of the chamber 11 is open and has an outer edge 14.
A portion of the cannister cap 12 is adapted to fit at, that is, either within or over the outer edge 14 of the tire end of the chamber 11
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Ring Tones 
