EP1712869A1 - Verbesserter hydraulischer Verschlussmechanismus - Google Patents

Verbesserter hydraulischer Verschlussmechanismus Download PDF

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Publication number
EP1712869A1
EP1712869A1 EP06007489A EP06007489A EP1712869A1 EP 1712869 A1 EP1712869 A1 EP 1712869A1 EP 06007489 A EP06007489 A EP 06007489A EP 06007489 A EP06007489 A EP 06007489A EP 1712869 A1 EP1712869 A1 EP 1712869A1
Authority
EP
European Patent Office
Prior art keywords
fluid
vent
annular chamber
high pressure
seal
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Withdrawn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
EP06007489A
Other languages
English (en)
French (fr)
Inventor
Simon Trendall
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP1712869A1 publication Critical patent/EP1712869A1/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A3/00—Breech mechanisms, e.g. locks
    • F41A3/64—Mounting of breech-blocks; Accessories for breech-blocks or breech-block mountings
    • F41A3/78—Bolt buffer or recuperator means
    • F41A3/90—Fluid buffers

Definitions

  • the present invention relates to an improvement to high pressure hydraulic breech mechanisms for all classes of firearm .
  • the clearance between components may be increased up to 0.02 millimetre and even at this size sufficient flow rate along the void,during the few milliseconds of peak pressure,to permit unsafe movement of the bolt in relation to the barrel cannot be achieved .
  • the use of conventional sealing means eases manufacture by increasinng acceptable tolerances .
  • Another advantage is that seals will remove the fluid film from reciprocating parts and wipe off any foreign matter preventing the ingress of damaging material into the hydraulic mechanism .
  • the annular chamber communicates via the vent directly or indirectly with the low pressure reservoir of the hydraulic breech mechanism so that any fluid passing through the annular chamber is returned to the reseervoir .
  • the vent discharges any fluid outside the envelope of the breech mechanism .
  • the vent discharges into a seperate reservoir .
  • a typical high pressure hydraulic breech mechanism is shown in figure 1 and comprises an outer casing 1 forming the wall of a low pressure reservoir 14, the high pressure cylinder 3 defines a high pressure reservoir 13 and a sleeve valve 2 closes ports 4 seperating the high pressure reservoir 13 from low pressure reservoir 14 .
  • the barrel extension 6 is secured to the high pressure cylinder 3 and the incompressible nature of the fluid sealed in high pressure reservoir 13 will secure or lock the bolt 10 in relation to the barrel extension 6 against the forces of firing . On firing a force will be applied to the bolt 10 due to gas pressure generated by the cartridge and the bolt 10 will that force to the fluid in high pressure reservoir 13 .
  • the fluid being incompressible will tend to migrate along the radial gap between the bolt 10 and the high pressure cylinder 3,fluid in the radial gap will be subject to the same pressure as that in the high pressure reservoir 13 .
  • On entering the annular chamber 7 the pressure is released as the fluid is no longer confined but can flow freely through the vent 11 back into the low pressure reservoir 14 .
  • the annular chamber 7 by seperating seal 8 and wipe ring 9 from the region of high pressure permits seal 8 and wipe ring 9 to operate within acceptable pressure limits. Any other seals such as at 5 may be protected in a similar way.
  • a seal 12 permits the vent tube 11 to reciprocate without fluid migrating from the low pressure reservoir 14 .

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Pressure Vessels And Lids Thereof (AREA)
EP06007489A 2005-04-12 2006-04-10 Verbesserter hydraulischer Verschlussmechanismus Withdrawn EP1712869A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0507382A GB2425162B (en) 2005-04-12 2005-04-12 An improvement to high pressure hydraulic breech mechanisms

Publications (1)

Publication Number Publication Date
EP1712869A1 true EP1712869A1 (de) 2006-10-18

Family

ID=34610997

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06007489A Withdrawn EP1712869A1 (de) 2005-04-12 2006-04-10 Verbesserter hydraulischer Verschlussmechanismus

Country Status (3)

Country Link
US (1) US20060225565A1 (de)
EP (1) EP1712869A1 (de)
GB (1) GB2425162B (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008209886A (ja) * 2007-02-23 2008-09-11 Samsung Sdi Co Ltd 有機電界発光表示装置及びその駆動方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB139541A (en) * 1918-12-10 1920-03-11 Hugh William Maunsell Gabbett Improvements in automatic firearms
DE737264C (de) * 1936-11-08 1943-07-09 Krupp Ag Mit einem Kolbenverschluss versehene selbsttaetige Feuerwaffe mit Rohrruecklauf und Vorholeinrichtung
EP0403452A2 (de) * 1989-05-09 1990-12-19 Aktiebolaget Bofors Bremse und Energieakkumulator zum Laden und Auswerfen von Artilleriepatronen

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2823587A (en) * 1942-11-28 1958-02-18 George A Chadwick Loading and ramming mechanism for semi-automatic guns
US2789472A (en) * 1954-06-28 1957-04-23 Warlick Frank Hydraulic breech control system
CH543722A (de) * 1971-08-26 1973-10-31 Karlsruhe Augsburg Iweka Vorrichtung zum gasdichten Abschliessen einer Trennfuge, insbesondere für Revolverkanonen hoher ballistischer Leistung
DE3234638C1 (de) * 1982-09-18 1991-01-03 Diehl Gmbh & Co Abdichtung fuer Differenzdruckkolben-Brennkammersysteme von Rohrwaffen
DE3838799C2 (de) * 1988-11-17 1997-06-26 Rheinmetall Ind Ag Dichtkonfiguration für eine automatische Rohrwaffe und Werkzeug zur Montage bzw. Demontage
DE3935314C2 (de) * 1989-10-24 1998-02-19 Diehl Gmbh & Co Dichtungsanordnung
GB2281961B (en) * 1992-12-09 1997-01-08 Vickers Shipbuilding & Eng Improvements in or relating to the movement of members
DE102005012284A1 (de) * 2005-02-03 2006-08-10 Diehl Bgt Defence Gmbh & Co. Kg Mechanisches Initiiersystem für hülsenlose Munition

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB139541A (en) * 1918-12-10 1920-03-11 Hugh William Maunsell Gabbett Improvements in automatic firearms
DE737264C (de) * 1936-11-08 1943-07-09 Krupp Ag Mit einem Kolbenverschluss versehene selbsttaetige Feuerwaffe mit Rohrruecklauf und Vorholeinrichtung
EP0403452A2 (de) * 1989-05-09 1990-12-19 Aktiebolaget Bofors Bremse und Energieakkumulator zum Laden und Auswerfen von Artilleriepatronen

Also Published As

Publication number Publication date
US20060225565A1 (en) 2006-10-12
GB0507382D0 (en) 2005-05-18
GB2425162B (en) 2007-04-11
GB2425162A (en) 2006-10-18

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