EP0062021A2 - Einrichtung zum Schärfen eines Geschosszünders - Google Patents

Einrichtung zum Schärfen eines Geschosszünders Download PDF

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Publication number
EP0062021A2
EP0062021A2 EP82850062A EP82850062A EP0062021A2 EP 0062021 A2 EP0062021 A2 EP 0062021A2 EP 82850062 A EP82850062 A EP 82850062A EP 82850062 A EP82850062 A EP 82850062A EP 0062021 A2 EP0062021 A2 EP 0062021A2
Authority
EP
European Patent Office
Prior art keywords
piston
sleeve
projectile
opening
arming
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP82850062A
Other languages
English (en)
French (fr)
Other versions
EP0062021A3 (de
Inventor
Kenneth Sundvall
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Foerenade Fabriksverken AB
Original Assignee
Foerenade Fabriksverken AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Foerenade Fabriksverken AB filed Critical Foerenade Fabriksverken AB
Publication of EP0062021A2 publication Critical patent/EP0062021A2/de
Publication of EP0062021A3 publication Critical patent/EP0062021A3/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C15/00—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges
    • F42C15/28—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges operated by flow of fluent material, e.g. shot, fluids
    • F42C15/30—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges operated by flow of fluent material, e.g. shot, fluids of propellant gases, i.e. derived from propulsive charge or rocket motor

Definitions

  • the present invention relates to a pressure-sensitive device for arming a fuze for a projectile.
  • a piston 2 is mounted in an opening in a projectile wall 1. At the firing the piston is exposed to a high gas pressure in the cartridge of the projectile or the bore of its weapon. The piston 2 is then pushed into the projectile and carries out some predetermined arming movement.
  • the fuze can e.g. be of the customary type that comprises a rotor, which can complete an igniter train by a rotation, usually under the influence.of a spring
  • the present invention can then be used to release a safety device which prevents the rotation.
  • FIG. 2 and 3 show such a combination.
  • the piston 2 is placed either in the back wall of a projectile or in the case of mortar projectiles or other projectiles with a driving band somewhere behind this.
  • a sleeve 3 and, in sealing contact against it, a piston 2 are mounted in an opening in a wall 1 of a projectile.
  • the sleeve 3 is made of softer material than the piston 2.
  • the piston 2 is made with an abrupt change 4 in its cross section.
  • the narrower part 5 of the piston is directed against the interior of the projectile and inserted into the sleeve 3 so that the edge of the broader part 6 of the piston which is turned inwards, that is the change 4 in cross section, bears upon the edge of the sleeve 3.
  • a very good sealing between the piston 2 and the sleeve 3 is achieved which just becomes better when the piston 2 is pushed into the sleeve 3-and deformes it.
  • the outermost part 7 of the piston is suitably made with still larger cross section than the cross section of the previously mentioned broader part 6.
  • the opening in the projectile wall 1 is suitably made with an edge 10 upon which the sleeve 3 can bear and which prevents it from being displaced into the projectile when exposed to pressure. If one makes the piston 2, the sleeve 3 and the opening rotational symmetric, which among other things for reasons of manufacturing technique often is suitable, the opening can for instance by drilling easily be given three diameters changed step-by-step.
  • the air in the outer part of the opening between the sleeve 3 and the outermost part 7 of the piston is prevented from leaking inwards by the sealing of the sleeve 3 and outwards by the high outer pressure.
  • the sleeve 3 extend a little into the outer part of the opening so that an annular space 9 is formed in the outer part located outside the sleeve 3 as seen from the longitudinal axis of the piston 2. In this space the air can be compressed during the movement of the piston.
  • the piston 11 can move backwards in the projectile under the influence of the acceleration after a blocking ball 12 has been moved. This can only happen after the piston 2, which moves against the direction of the acceleration, has moved a determined distance. Consequently one gets a device that will not arm the fuze until first the piston 2 has moved under the influence of the gas pressure and then another piston 11 under the influence of the acceleration. The device gives a high degree of safety.
  • the present invention can of cause also be used in a variety of other embodiments and in combination with other arming or safety devices.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Fuses (AREA)
  • Actuator (AREA)
  • Toys (AREA)
  • Portable Nailing Machines And Staplers (AREA)
EP82850062A 1981-03-31 1982-03-25 Einrichtung zum Schärfen eines Geschosszünders Withdrawn EP0062021A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8102037 1981-03-31
SE8102037A SE443448B (sv) 1981-03-31 1981-03-31 Anordning for armering av ett tendror for en projektildel

Publications (2)

Publication Number Publication Date
EP0062021A2 true EP0062021A2 (de) 1982-10-06
EP0062021A3 EP0062021A3 (de) 1983-01-05

Family

ID=20343473

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82850062A Withdrawn EP0062021A3 (de) 1981-03-31 1982-03-25 Einrichtung zum Schärfen eines Geschosszünders

Country Status (4)

Country Link
EP (1) EP0062021A3 (de)
JP (1) JPS5828999A (de)
NO (1) NO821041L (de)
SE (1) SE443448B (de)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191518089A (en) * 1915-12-28 1916-06-22 Philip Middleton Justice Improvements in Fuzes for Projectiles.
DE808514C (de) * 1948-10-02 1951-07-16 Karl Peter May Ventil, insbesondere Hochdruckventil
FR1074193A (fr) * 1958-01-08 1954-10-04 Soc Tech De Rech Ind Fusée d'amorcage
FR1222780A (fr) * 1959-01-23 1960-06-13 Fusée pour projectiles et bombes
FR1403851A (fr) * 1964-05-15 1965-06-25 Lip Sa Dispositif de sécurité et de contrôle pour fusée
DE2403509A1 (de) * 1974-01-25 1975-08-07 Licentia Gmbh Anordnung zur abdichtung einer schubstange

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191518089A (en) * 1915-12-28 1916-06-22 Philip Middleton Justice Improvements in Fuzes for Projectiles.
DE808514C (de) * 1948-10-02 1951-07-16 Karl Peter May Ventil, insbesondere Hochdruckventil
FR1074193A (fr) * 1958-01-08 1954-10-04 Soc Tech De Rech Ind Fusée d'amorcage
FR1222780A (fr) * 1959-01-23 1960-06-13 Fusée pour projectiles et bombes
FR1403851A (fr) * 1964-05-15 1965-06-25 Lip Sa Dispositif de sécurité et de contrôle pour fusée
DE2403509A1 (de) * 1974-01-25 1975-08-07 Licentia Gmbh Anordnung zur abdichtung einer schubstange

Also Published As

Publication number Publication date
EP0062021A3 (de) 1983-01-05
SE8102037L (sv) 1982-10-01
NO821041L (no) 1982-10-01
JPS5828999A (ja) 1983-02-21
SE443448B (sv) 1986-02-24

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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17P Request for examination filed

Effective date: 19820616

AK Designated contracting states

Designated state(s): CH DE FR GB

PUAL Search report despatched

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AK Designated contracting states

Designated state(s): CH DE FR GB LI

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19830118

RIN1 Information on inventor provided before grant (corrected)

Inventor name: SUNDVALL, KENNETH