US3246490A - Pyrophoric lighters - Google Patents

Pyrophoric lighters Download PDF

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Publication number
US3246490A
US3246490A US342960A US34296064A US3246490A US 3246490 A US3246490 A US 3246490A US 342960 A US342960 A US 342960A US 34296064 A US34296064 A US 34296064A US 3246490 A US3246490 A US 3246490A
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United States
Prior art keywords
flint
housing
piston
gas
container
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Expired - Lifetime
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US342960A
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English (en)
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Quandt Hans Hubert
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Individual
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Individual
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q2/00—Lighters containing fuel, e.g. for cigarettes
    • F23Q2/34—Component parts or accessories
    • F23Q2/48—Flint; Guides for, or arrangements of, flints

Definitions

  • the present invention relates to pyrophoric lighters such as cigarette lighters, in which a flint is pressed against an abrasive or friction wheel to produce hot sparks when the Wheel is rotated.
  • the gas may be butane and/or propane contained, for example, in liquid form in the lighter, or alternatively may be carbon dioxide contained, for example, in solid form in the lighter. Since the spring has been dispensed with, a larger flint can be provided in the space hitherto occupied by the spring, and the adjustment screw can also be dispensed with.
  • FIGURE 1 is a longitudinal section of a pyrophoric lighter according to one embodiment of the invention.
  • FIGURES 2, 3 and4 are longitudinal sections of various embodiments of flint housings which are closed at their lower ends,
  • FIGURE 5 is an enlarged longitudinal section of the upper end of the flint housing shown in FIGURE 4.
  • FIGURE 6 is an underneath plan view of the housing shown in FIGURE 5.
  • FIGURE 7 is a transverse section of the flint for use in the housing of FIGURES 4, 5 and 6.
  • FIGURE 8 is a side elevation, partly in section, of a portion of a modified form of flint.
  • FIGURE 9 is a transverse section of the flint shown in FIGURE 8.
  • FIGURE 10 is a transverse section of a flint according to a further modification.
  • the pyrophoric lighter shown in FIGURE 1 is a pocket cigarette lighter comprising a reservoir or container 2 filled with a fuel, for example, liquefied butane 1.
  • a flint housing 3 extends into the container 2, and a gas-tight connection is provided at 4 between the housing and the container.
  • the flint housing 3 is open at its lower end 3a, and a flint 5 is dispose-d within and guided by the housing 3.
  • a piston 6 is slidable within the housing 3, below the flint 5 and forms a seal against the inner Wall of the housing 3, for example, by means of a sealing ring 7.
  • the pressure of the gaseous butane acts through the liquid against the bottom of the piston 6 and forces the piston 6 against the flint 5 in the direction of the arrows, thereby urging the latter, with a substantially constant pressure which is generally independent of the length of the flint, against an abrasive or friction wheel 8.
  • the container 2 has a gas outlet valve or point 9 where the gas is ignited by sparks from the flint and a filling or topping-up valve 10 in the base of the container 2.
  • an abutment member 12 for example, an inner shoulder, is provided, which forms a stop for the piston.
  • the modified flint housing shown in FIGURE 2 is closed at its lower end to form a chamber a for liquefied gas I isolated from the rest of the container 2.
  • the expansion pressure of this gas acts on the piston 6 and thus urges the flint 5 against the friction wheel 8.
  • topping-up valve 11 is arranged in the chamber a, as shown in FIGURE 3, in the base of the housing 3.
  • the friction wheel 8 is supp'ortedby an abutment member 12 which is fixed to the upper end of the housing'3.
  • the inner shoulder 13 of the abutment member 12 serves as a stop for the piston 6 when the wheel 8 is removed.
  • This piston 6 is recessed at 14 to receive and locate the lower end of the flint 5.
  • the abutment member 12 is provided with a rectangular projection 15 which slidably engages in a corresponding rectangular axial slot 16 in the flint 5 shown in FIGURE 7, and/or may be formed with a rectangular recess 17 (FIGURE 6) which is cooperable with a rectangular pro jection or spline 18 on the flint (FIGURE 7).
  • the abutment member may be provided with a V shaped projection (not shown) which cooperates with a V shaped groove 19 in the flint 5 as shown in FIGURES 8 and 9, or with a flat (not shown) which cooperates with the flat 20 of the flint 5 shown in FIG- URE 10.
  • the pressure of the gaseous fuel such as butane or propane
  • a different gas may be used.
  • This gas may be, for example, a non-inflammable gas such as carbon dioxide produced from solid carbon dioxide or Dry Ice, although other gas-producing pellets may be employed.
  • flint housing and/ or the abument mem ber thereof, and flint may have a cross-section which varies from the circular, oval or polyhedral, to prevent rotation of the flint.
  • the frictional fit of the piston within the flint housing may be adequate to prevent the piston passing out of the lower open end of the, flint housing into the container, due to its own weight when the gas pressure falls.
  • additional means may be provided, for example a shoulder may be formed at the lower end of the housing.
  • a container for a pressurised fuel a generally cylindrical open-ended flint housing mounted in a wall of said container with the inner end thereof opening into the container and the outer end thereof underlying a rotatable abrasive wheel, a piston and a flint slidably mounted in said housing, with said flint disposed between said wheel and piston and being normally urged into engagement with the abrasive wheel by the pressure of said fuel within the container which acts on said piston.
  • an igniter assembly including a generally cylindrical flint housing, one end of which is closed, and the other end of which is provided with a passage adapted to slidably receive a flint, a rotatable friction Wheel overlying said other end of said passage, a piston, provided with a flint engaging portion, slidably mounted within the housing, means forming a gas-tight, seal between said piston and housing, a chamber between said piston and closed end of said housing for receiving a gas under pressure, and a flint located in said housing against said flint engaging portion of said piston, said flint being normally urged through said passage into engagement with said abrasive wheel by the pressure of the. gas acting on said piston.
  • a lighter according to claim 2 including stop means associated with said housing, said means being engageable with said piston to limit the sliding movement of said piston within said housing.
  • a lighter according to claim 2- including at least one projection and recess associated with the housing and flint, said at least one recess in one member being cooperable with the projection on the other member to prevent rotation of said flint within said housing butpermit relative sliding movement therebetween.
  • a lighter according to claim 2 including a filling valve in the closed end. of said housing.
  • a gas lighter including a reservoir, a filling valvein said reservoir for the admission of a gaseous or liquid fuel, into said reservoir, an outlet valve in the reservoir for gaseous fuel to be, ignited, a generally cylindrical, open-ended,v flint housing secured to and extending through a wall of said reservoir, an apertured abutment member located at the outer open end of said housing and carrying a rotatable friction wheel which overlies said outer end, a piston mounted within said housing for sliding movement towards or away from said wheel, said sliding movement towards said wheel being limited by said abutment member, at least one sealing ring carried by said piston, disposed between said housing and piston, a flint engaging portion on said piston for engaging a flint when disposed so as to extend out of said housing through said aperture in the abutment member, between said piston and friction wheel, said aperture having at least one surface cooperable with at least one corresponding surface of the flint to prevent rotation of the latter, the flint being normally
  • a pyrophoric lighter comprising a reservoir, a first filling valve in said reservoir for admitting a pressurised, inflammable, at least partially gaseous fuel into said reservoir, an outlet valve in said reservoir for the gas to be ignited, a cylindrical flint housing secured to and extending into said reservoir adjacent said outlet valve, the interior of said housing being isolated from the interior of said reservoir, an apertured.
  • abutment member located at the outer open end of said housing and carrying a rotatable and detachable friction wheel overlying the aperture in said member, a piston slidably mounted within said housing, a sealing ring carried by said piston to provide a gas-tight seal between said housing and piston, a shoulder onsaid abutment member engageable with said piston upon removal of said friction wheel to prevent the exit of said piston from the housing, a flint slidably disposed within said housing and aperture between said piston and friction wheel, aprojection on said abutment member cooperable with a correspondingly shaped longitudinal recess in the flint, to prevent rotational movement of the flint, said flint being normally urged into engagement with the friction wheel with a pressure substantially independent of the length of the flint, by a. pressurised gas disposed Within said housing between said piston and closed inner end of. said housing, said gas acting through the intermediary of said piston, a second filling valve being

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lighters Containing Fuel (AREA)
US342960A 1963-02-19 1964-02-06 Pyrophoric lighters Expired - Lifetime US3246490A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEQ736A DE1182890B (de) 1963-02-19 1963-02-19 Pyrophore Zuendvorrichtung

Publications (1)

Publication Number Publication Date
US3246490A true US3246490A (en) 1966-04-19

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ID=7394517

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Application Number Title Priority Date Filing Date
US342960A Expired - Lifetime US3246490A (en) 1963-02-19 1964-02-06 Pyrophoric lighters

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US (1) US3246490A (de)
AT (1) AT248758B (de)
CH (1) CH418035A (de)
DE (1) DE1182890B (de)
GB (1) GB1045181A (de)
NL (1) NL6400881A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3331223A (en) * 1964-11-26 1967-07-18 Colibri Lighters Cigarette lighters
US3353375A (en) * 1964-06-04 1967-11-21 Colibri Lighters Cigarette lighters

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1762218A (en) * 1929-01-11 1930-06-10 Duncan Electric Mfg Co Electricity meter
US2042572A (en) * 1935-02-20 1936-06-02 Wise Frederick Charles Pyrophoric igniter
US2462467A (en) * 1945-12-18 1949-02-22 Charles C Clamp Pyrophoric lighter
US2743597A (en) * 1952-09-01 1956-05-01 Newman Stanley Herbert Compressed gas-fuelled cigarette lighters

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT189425B (de) * 1954-12-15 1957-03-25 Maximilian Dipl Ing Kohn Feuerzeug

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1762218A (en) * 1929-01-11 1930-06-10 Duncan Electric Mfg Co Electricity meter
US2042572A (en) * 1935-02-20 1936-06-02 Wise Frederick Charles Pyrophoric igniter
US2462467A (en) * 1945-12-18 1949-02-22 Charles C Clamp Pyrophoric lighter
US2743597A (en) * 1952-09-01 1956-05-01 Newman Stanley Herbert Compressed gas-fuelled cigarette lighters

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3353375A (en) * 1964-06-04 1967-11-21 Colibri Lighters Cigarette lighters
US3331223A (en) * 1964-11-26 1967-07-18 Colibri Lighters Cigarette lighters

Also Published As

Publication number Publication date
DE1182890B (de) 1964-12-03
GB1045181A (en) 1966-10-12
CH418035A (de) 1966-07-31
NL6400881A (de) 1964-08-20
AT248758B (de) 1966-08-10

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