US3711241A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Butane gas lighter
Assignee: Individual
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Filing: 1970-07-14
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Granted: 1973-01-16
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Expires: 1990-07-14
Abstract
Abstract A liquefied gas lighter has a tank for containing liquefied butane or like fuel, and a burner unit that extends from an external orifice through the top of the tank to or near the bottom of the liquid in the tank. The burner is smoothly adjustable. A porous member with fine pin holes covers the opening from the tank to deliver low-pressure gas from the highpressure liquid, stabilizing the flame. A small-bore passage extends from the external burner orifice to an internal transverse abutment at the top of a large-bore tubular part of the burner unit. A compressible gas-permeable disc is squeezed between the transverse abutment and the top of a rod. In one form, there is an adjustment screw that presses against the bottom of the rod. In another form, the transverse abutment and the burner orifice form a top part that is screw-threaded into a tubular part of the burner unit and the bottom of the rod bears against a stop.
Inventors
- 👤 H Obata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:28
CPC Classifications
F; F23; F23Q; F23Q2/00; F23Q2/16; F23Q2/162; F23Q2/163
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
264 words
A liquefied gas lighter including a tank for containing liquefied gas and an adjustable burner unit, said tank having top, bottom and lateral walls, said burner unit including a tubular member having a lower portion extending gas-tight through said bottom wall and having a relatively large bore extending to an integral transverse abutment at the upper end of said lower portion, said tubular member having an upper portion extending gas-tight through said top wall and having a small-bore passage extending through said transverse abutment and to an external orifice, a rod fitting closely in the large bore of said lower portion with sufficient clearance to provide a gas passage along the rod, the length of the rod being much larger than its diameter, the rod having an upper transverse end opposite said transverse abutment, said transverse end and said transverse abutment being parallel to each other, a compressible gaspermeable member between said transverse abutment and said transverse end of the rod, said lower portion of the tubular member having an opening in the tank near the bottom wall, a porous gas-permeable member having fine holes occupying said opening and constituting a restrictive barrier between the liquefied fuel space in the tank and the gas passage in the lower portion of the tubular member, and an adjusting member screwthreaded into the large bore of said lower portion of the tubular member and bearing against the lower end of the rod for compressing said compressible gas-permeable member and thereby adjusting the flow of gas therethrough, and a seal below said opening and about said adjusting member.
Claim 2
Dependent Claim
264 words
A liquefied gas lighter including a tank for containing liquefied gas and an adjustable burner unit, said tank having top, bottom and lateral walls, said burner unit including a tubular member having a lower portion extending gas-tight through said bottom wall and having a relatively large bore extending to an integral transverse abutment at the upper end of said lower portion, said tubular member having an upper portion extending gas-tight through said top wall and having a small-bore passage extending through said transverse abutment and to an external orifice, a rod fitting closely in the large bore of said lower portion with sufficient clearance to provide a gas passage along the rod, the length of the rod being much larger than its diameter, the rod having an upper transverse end opposite said transverse abutment, said transverse end and said transverse abutment being parallel to each other, a compressible gaspermeable member between said transverse abutment and said transverse end of the rod, said lower portion of the tubular member having an opening in the tank near the bottom wall, a porous gas-permeable member having fine holes occupying said opening and constituting a restrictive barrier between the liquefied fuel space in the tank and the gas passage in the lower portion of the tubular member, and an adjusting member screwthreaded into the large bore of said lower portion of the tubular member and bearing against the lower end of the rod for compressing said compressible gas-permeable member and thereby adjusting the flow of gas therethrough, and a seal below said opening and about said adjusting member.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-16 | 1976-07-17 | 1977-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-16 | 1980-07-17 | 1981-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-16 | 1984-07-17 | 1985-01-16 | $7700.00 | Window Closed / Lapsed |