• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:

    公开号:WO1984001811A1
    申请号:PCT/EP1983/000276
    申请日:1983-10-24
    公开日:1984-05-10
    发明作者:Conrad Zellweger；Victor C Spreter
    申请人:Pozel Sa；
    IPC主号:F23Q1-00
    专利说明:
    [0001] Igniter for Combustible Material
    [0002] The present invention relates to an igniter for combustible material comprising a support for an element made of a composition capable of being ignited by friction and a friction-strip having a surface portion treated in order to produce the ignition of the element by friction.
    [0003] In the known igniters of this kind, -the element sensitive to friction is placed in such a manner that one of its sides is located in front of the material to be ignited, and its other side in front of the friction-strip. This necessitates to place the element on both sides of the support and to provide a communication either by means of perforations or marginally. This implies a difficult and compii- cated manufacturing.
    [0004] Moreover, this device ay accidentally be ignited by friction with a part of the device comprising the igniter or eventually with a body not belonging to the device.
    [0005] The invention aims to remedy to these drawbacks. The igniter according to the invention is characterized in that the element is located in a space comprised between the support and the friction-strip, the latter being conformed so that its displacement brings said surface portion into frictional contact with the element first, and then uncovers the iatter when ignited.
    [0006] The attached drawings show schematically and by way of example an embodiment and two modified embodiments of the igniter according to the inven¬ tion.
    [0007] Fig. 1 is a perspective view of the embodiment.
    [0008] Fig. 2 is a iongitudinal section thereof.
    [0009] Fig. 3 and show modified embodiments of the igniter. The igniter shown in Fig. 2 and 3 comprises a support made of a sheet-metal 1 having a stamped cavity 2. This cavity is a recess in which is placed an element 3 and a material capabie of being ignited by friction, this element having the form of a capsule. The igniter comprises a friction-strip placed on a support 1 and a capsule 3, this friction-strip being maintained against the capsule by a metailic plate 5 secured to the support 1 by electrical welding.
    [0010] The plate 5 is bent in such a manner as to form with the support i a Channel for guiding and maintaining the friction-strip . The latter has a surface portion treated to produce the ignition of the capsule 3. For this purpose, it is made of a strip 6, an end of which is covered with a substance adapted to produce ignition- of the capsule 3 by friction. The plate 5 has an opening in front of the capsule 3. As the capsule 3 protrudes from its cavity 2, the strip 6 is curved in front of the opening 8. This deformation creates a pressure of the strip 4 against the capsule 3. The latter is made of a substance simiiar to that of a match tip, for example a mixture of potassium chlorate and/or chromate, lead peroxide and antimony sulphide ixed with a strong glue. The friction surface of the friction-strip can be made, for example, of a mixture of ground glass, red phosphorus and antimony sulphide agglomerated with strong glue.
    [0011] To light a combustible material, the part of this material to be ignited must be located in front of the opening 8. The capsule 3 is then ignited by a rapid pull of the friction-strip while grasping the strip 6 by its end opposite to the one carrying the layer 7. This pull produces a sliding of the strip 6 between the support 1 and the plate 5, so that the layer 7 scratches the capsule 3. At the end of the displacement, the strip 6 uncovers the opening 8, so that the ignited capsule 3 lights the combustible material.
    [0012] In the present arrangement, the igniting capsule 3 is located between the support 1 and the strip 6 so that it is protected from destruction by mechani- cal impact or by humidity. Moreover, the igniter offers more security due to the fact that the capsule cannot be ignited by accidental friction with an outer body. The igniter according to the invention may be used, for example, for igniting a heating cartridge of a self-heating Container of the kind described in European Patent N° (Patent Application PCT/EP81 00112).
    [0013] In the embodiment of Fig. 3, the support and the holding and guiding means are obtained by a Single plate 9, foided to form a Channel. The two main faces of this plate are sufficiently foided to ieave between them a distance lower than the thickness of the strip 6, so that the plate 9 must be slightly deformed to provide a passage for the strip which is elasticaiiy clamped between these faces. Thus, the elastical pressure is obtained for providing frictional contact between capsule 3 and the friction-strip 6.
    [0014] In the embodiment of Fig. , the friction-strip is constituted by an elongated member such as a string, an end of which is treated to constitute a friction strip 10. The Channel formed between the support 1 and the plate 5 has a cross- section substantially corresponding to the section of the string.
    [0015] It is obvious that numerous modifications may be provided, and particularly friction-strips and the holding and guiding means may have very different shapes. The friction-strip can be made of a disc having an open portion. The support carrying the element to be ignited wouid then be anguiarly moved with respect to the friction-strip, and the element when ignited would be placed in front of the open portion of the friction-strip.
    [0016] In the example of Fig. , the friciton-strip, instead of being constituted by a string, could be a rigid rod, for example a metallic rod, which could be treated to be rugged, so that ignition of element 3 could be obtained without having to coat the tip of the rod with a Special substance.
    [0017] In principle, it is preferable that the support and the holding plate be made of incombustible material, although it is not an essential condition in certain cases. Usually, the friction-strip is detached from the support after ignition, so that it could be made of combustible material, cardboard for example, in the case of strip 6 of Fig. 1. In any case, security is increased when the friction-strip is made of incombustible material.
    权利要求:
    Claims - - CLAIMS
    1. Igniter for combustible material, comprising a support for an element made of a composition capable of being ignited by friction and a friction-strip having a surface portion treated in order to produce the ignition of the element by friction, characterized in that the element is located in a space comprised between the support and the friction-strip, the latter being conformed so that its displacement brings said surface portion into frictional contact with the element first, and then uncovers the latter when ignited.
    2. Igniter according to claim 1, wherein the friction-strip Is constituted by an elongated member carrying close to one of its ends a substance for producing, by friction, ignition of said element, characterized in that the holding and guiding means are solid with the support and adapted to maintain the friction- strip in frictional contact with the element.
    3. Igniter according to claim 2, characterized in that said means are consti¬ tuted by a plate fixed on the support and having an opening in front of the element.
    4. Igniter according to claim 3, characterized in that the support comprises a cavity in which the element is retained.
    5. Igniter according to Claims 1 to 4, characterized in that the support is made of an incombustible substance.
    6. Igniter according to claim 5, characterized in that the holding and guiding means are made of an incombustible substance.
    7. Igniter according to one of the Claims 1 to 4, characterized in that the element is constituted in the form of a capsule.
    8. Igniter according to claim 3, characterized in that the plate and the support are constituted by two portions of a Single foided plate.
    9. Igniter according to claim 3 or 8, characterized in that the distance comprised between the support and the guiding plate is inferior to the thickness of the friction-strip, in order to produce elastical pressure on the element to be ignited.
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    同族专利:
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    AT20771T|1986-08-15|
    JPS60500026A|1985-01-10|
    EP0108719B1|1986-07-16|
    NZ206076A|1986-03-14|
    DE3364533D1|1986-08-21|
    CH650581A5|1985-07-31|
    AU2066883A|1984-05-03|
    JPH0428973B2|1992-05-15|
    AU561571B2|1987-05-14|
    EP0108719A1|1984-05-16|
    US4583940A|1986-04-22|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    1984-05-10| AK| Designated states|Designated state(s): JP US |
    优先权:
    申请号 | 申请日 | 专利标题
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