Combustion – Flame holder and fuel tank assembly
Patent
1984-03-26
1986-07-22
Dority, Jr., Carroll B.
Combustion
Flame holder and fuel tank assembly
251121, F23D 1478
Patent
active
046016562
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a gas flowrate regulating device for a liquefied-gas lighter and, in particular, a device enabling the maximum height of the flame which can be furnished by the lighter to be adjusted to a given value.
Most gas flowrate regulating devices for liquefied-gas lighters employ a compressible element, which may or may not be traversed by the gas, which is compressed to a greater or lesser degree according to the gas flowrate desired. Some of these devices additionally have means enabling the gas flowrate, and hence the flame height furnished, to be limited to a given maximum value.
These means usually consist of a preregulation stage disposed on the gas path and causing it to undergo an additional pressure loss, this preregulation stage being disposed in series with the normal regulation stage.
It has been proposed to produce preregulation and regulation of the flame height of a lighter with the aid of a single permeable pellet. Thus, regulating devices are known from French Pat. No. 2,277,305 wherein, on the one hand, preregulation is ensured by annular compression of a permeable compressible disk by means of a first annular screw screwed into the body of the expander and, on the other hand, regulation is ensured by central compression of the same disk by means of a second screw screwed into an internal thread of the first.
This type of device permits easy access to the preregulation and regulation means from the outside of the lighter and hence enables the maximum flame or utilization flame height to be corrected without disassembling either the preregulation or the regulation system.
However, a disadvantage inherent in this type of device resides in the fact that preregulation and regulation are not independent of each other, and that a modification in one is likely to modify the other. In fact, because the preregulation and regulation screws are screwed into each other, they are linked rotationally by the friction existing between their common threads.
German Pat. No. 1,632,608 has also proposed preregulation by means of an annular screw screwed into the expander body and regulation by means of a second screw screwed upstream of the first, also in the expander body, part of which passes through the annular screw to compress the elastic disk. Although this type of device ensures full independence of the two compression screws from each other, it does not permit access to the screw exerting the annular compression without first having disassembled the entire device.
The goal of the present invention is to remedy these drawbacks by proposing a gas flowchart regulating device of the aforesaid type wherein the preregulation system, namely regulation of the maximum flame height, and the system for regulation of the flame at the utilization height are both independent of each other and accessible from the outside of the lighter without disassembly and hence without going out of adjustment.
For this purpose, the object of the invention is a gas flowrate regulating device for a liquefied-gas lighter, of the type having an expander body provided in the lighter body designed to receive a permeable elastic disk traversed by the gas and two compression elements able to compress two different zones of this disk, an annular zone and a central zone, a first compression element composed of an annular compression screw screwed into the expander body and rotationally integral with a control element and a second element, known as the central compression element, traversing said annular compression screw to ensure compression of the central zone of the elastic permeable disk, said device being characterized by said central compression element being slidably mounted in the annular compression screw and being integral, at least translationally, with a control element screwed into the expander body.
The present invention ensures independence of the two regulating elements from each other by making access to each of them possible without having to disassemble the other.
In an advantageous embodiment
Dority Jr. Carroll B.
Morley John P.
S. T. Dupont
LandOfFree
Gas flowrate regulating device for a liquefied-gas lighter does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Gas flowrate regulating device for a liquefied-gas lighter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gas flowrate regulating device for a liquefied-gas lighter will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-863610