US3783737A - Seal - Google Patents

Seal Download PDF

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Publication number
US3783737A
US3783737A US00223643A US3783737DA US3783737A US 3783737 A US3783737 A US 3783737A US 00223643 A US00223643 A US 00223643A US 3783737D A US3783737D A US 3783737DA US 3783737 A US3783737 A US 3783737A
Authority
US
United States
Prior art keywords
seal
chamber
aft
diameter
annular
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.)
Expired - Lifetime
Application number
US00223643A
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English (en)
Inventor
E Ashley
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Application granted granted Critical
Publication of US3783737A publication Critical patent/US3783737A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F41A3/74—Obturating or packing devices for gas leak prevention in breech mechanisms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B14/00—Projectiles or missiles characterised by arrangements for guiding or sealing them inside barrels, or for lubricating or cleaning barrels
    • F42B14/02—Driving bands; Rotating bands

Definitions

  • a liquid propellant gun is provided with a seal and a multi diametered chamber which centripetally deflects [56] References and the seal to generate a preseating force thereon.
  • FIG. 1 is a schematic in longitudinal cross section of a prior art firing chamber, such as is shown in Ser. No. 148,833 supra;
  • FIG. 2 is a schematic in longitudinal cross section of a seal embodying this invention
  • FIG. 3 is a schematic in longitudinal cross-section of a multi diametered firing chamber and seal embodying this invention.
  • FIG. 4 is a detail view in longitudinal cross-section of a gun embodying this invention.
  • the seal is self-energizing in that a higher gas pressure within the chamber tends to seat the seal yet more firmly.
  • the disadvantage of such conventional seals is that the small initial leakage causes heating and erosion of the seal, and often allows foreign particles to enter the gap and to interfere with the seating of the seal.
  • FIGS. 2 and 3 The combination of the seal and the firing chamber shown in FIGS. 2 and 3 provides a full seating of the seal with both the chamber and the gun bolt before firing.
  • the seal 20 is shown in its free state in FIG. 2, and is transversely annular, with a substantially triangular longitudinal crosssection.
  • the seals outer annular surface 22 has a small positive taper forward the front, shown as angle PT, its aft transverse surface 24 may be slightly conical internally, shown as angle NT, and its hypotenuse may be concave. If the seal is subjected to an annular, centripetal force on its forward edge annulus 26, a compound deflection will occur which pivots the longitudinal cross section about a transverse annular axis, so that the major diameter D of the forward edge-annulus is reduced, reducing the angle PT, and the aft transverse surface 24 becomes less conical, increasing the angle NT.
  • the chamber 30 has an internal diameter D, with a tapered aft entrance or lead-in portion 32 having an initial aft internal diameter D greater than D and a forward internal diameter equal to D
  • FIG. 3 shows the seal 20 in its free state.
  • the forward edge annulus 26 engages the wall 32 and is progressively deflected by the peripheral force F, to reduce its major diameter D,.
  • the peripheral force F plateaus at a maximum, while the major diameter D plateaus at a minimum which is the diameter of the firing chamber D with the forward edge annulus firmly seated against the chamber wall.
  • a barrel 50 having a chamber 52 similar to 30/32 is locked into a receiver 54.
  • a bolt 56 reciprocates in the chamber and carries a chamber seal 58, similar to 20, which is held by a retainer 60 and a resilient washer 62.
  • the aft end of the retainer is threaded at 64 into a bore 66 in the bolt.
  • An electrode 68 is fixed in a bore 70 through the retainer and bolt by an insulator 72 and a wedge 74.
  • the seal 58 is distorted by the chamber wall and preseated thereagainst as described with respect to FIG. 3.
  • a combustion apparatus comprising:
  • said chamber having an internal wall having an aft gressively reduced thereby, providing a continuous edge sealing between said seal and said wall;
  • said piston has a forward facing transverse surface aft of and adjacent to said seal;
  • said aft, annular, approximately transverse face of said seal having an inner annular edge which in the free state of said seal is longitudinally forward of a piston for obturating said forward portion of said chamber
  • said seal being transversely annular, with substantially triangular longitudinal cross-section, having an outer annular, approximately cylindrical face and an aft, annular, approximately transverse face,
  • aft entrance portion has a negative taper from its aft initial diameter to said final diameter, said final diameter, being the diameter of said

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Automotive Seat Belt Assembly (AREA)
  • Gasket Seals (AREA)
US00223643A 1972-02-04 1972-02-04 Seal Expired - Lifetime US3783737A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US22364372A 1972-02-04 1972-02-04

Publications (1)

Publication Number Publication Date
US3783737A true US3783737A (en) 1974-01-08

Family

ID=22837418

Family Applications (1)

Application Number Title Priority Date Filing Date
US00223643A Expired - Lifetime US3783737A (en) 1972-02-04 1972-02-04 Seal

Country Status (4)

Country Link
US (1) US3783737A (ru)
JP (1) JPS5644360B2 (ru)
DE (2) DE2253230C2 (ru)
GB (1) GB1414653A (ru)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3986431A (en) * 1974-02-07 1976-10-19 Diehl Tubular firearm with striker and sealing lip
US4161133A (en) * 1977-03-04 1979-07-17 The United States Of America As Represented By The Secretary Of The Navy Liquid propellant gun
US4634134A (en) * 1985-05-08 1987-01-06 Epworth Manufacturing Co., Inc. Mechanical seal
US4715260A (en) * 1986-12-22 1987-12-29 General Electric Company Seal
EP0321102A2 (en) 1987-12-16 1989-06-21 General Electric Company Liquid propellant weapon system
US4852459A (en) * 1987-12-16 1989-08-01 General Electric Company Liquid propellant weapon system
US4852458A (en) * 1987-12-16 1989-08-01 General Electric Company Liquid propellant weapon system
US4930423A (en) * 1987-12-16 1990-06-05 General Electric Company Liquid propellant weapon system
US4932327A (en) * 1984-11-30 1990-06-12 General Electric Company Liquid propellant gun
US4945809A (en) * 1984-11-30 1990-08-07 General Electric Company Liquid propellant gun
US4967638A (en) * 1981-05-14 1990-11-06 General Electric Company Liquid propellant weapon system
US4993309A (en) * 1987-12-16 1991-02-19 General Electric Company Liquid propellant weapon system
WO1992001901A1 (de) * 1990-07-19 1992-02-06 Pse Produkt- Und Systementwicklungsgesellschaft M.B.H. Einrichtung an handfeuerwaffen zum abdichten eines patronenlagers
US5305679A (en) * 1991-04-04 1994-04-26 Giat Industries Cylinder mortar
US5343849A (en) * 1992-08-17 1994-09-06 Michael Steer Rapid fire ball gun
US6286743B1 (en) * 1999-02-11 2001-09-11 Hilti Aktiengesellschaft Explosive powder charge-operated setting tool
FR2862377A1 (fr) * 2003-11-14 2005-05-20 Philippe Courty Systeme d'etancheite de chambre pour munitions sans etuis
US20100038864A1 (en) * 2006-10-16 2010-02-18 Nok Corporation Sealing device
US20100175549A1 (en) * 2007-04-02 2010-07-15 Rheinmetall Waffe Munition Gmbh Obturation of drum cannons
US20100201078A1 (en) * 2006-10-16 2010-08-12 Nok Corporation Sealing device
US20130014634A1 (en) * 2010-02-01 2013-01-17 Diehl Bgt Defence Gmbh & Co. Kg Sealing ring and propellant charge cartridge

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2711070A1 (de) * 1977-03-14 1978-09-21 Hilti Ag Pulverkraftbetriebenes bolzensetzgeraet
JPS59191663U (ja) * 1983-06-07 1984-12-19 株式会社日本製鋼所 超音波探触子の保持装置
JPS59191666U (ja) * 1983-06-07 1984-12-19 日立造船株式会社 検出器保持装置
DE3706213C2 (de) * 1987-02-26 1998-04-09 Wegmann & Co Gmbh Wurfbecher für Wurfkörper, wie Nebelkerzen und dergleichen
JPH02662U (ru) * 1988-06-10 1990-01-05

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US539733A (en) * 1895-05-21 Gas-check for breech-loading guns
US1376130A (en) * 1916-07-06 1921-04-26 Us Ordnance Co Gas-check
US2117885A (en) * 1934-12-06 1938-05-17 Hasek Jaroslav Firearm
DE1096697B (de) * 1956-05-11 1961-01-05 Goetzewerke Kolbenring, insbesondere fuer Brennkraftmaschinen
US3006254A (en) * 1960-02-17 1961-10-31 Robert J Thierry Self-energizing breech seal for guns

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3354780A (en) * 1966-03-28 1967-11-28 Olin Mathieson Breech seal for firearms utilizing caseless ammunition

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US539733A (en) * 1895-05-21 Gas-check for breech-loading guns
US1376130A (en) * 1916-07-06 1921-04-26 Us Ordnance Co Gas-check
US2117885A (en) * 1934-12-06 1938-05-17 Hasek Jaroslav Firearm
DE1096697B (de) * 1956-05-11 1961-01-05 Goetzewerke Kolbenring, insbesondere fuer Brennkraftmaschinen
US3006254A (en) * 1960-02-17 1961-10-31 Robert J Thierry Self-energizing breech seal for guns

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3986431A (en) * 1974-02-07 1976-10-19 Diehl Tubular firearm with striker and sealing lip
US4161133A (en) * 1977-03-04 1979-07-17 The United States Of America As Represented By The Secretary Of The Navy Liquid propellant gun
US4967638A (en) * 1981-05-14 1990-11-06 General Electric Company Liquid propellant weapon system
US4932327A (en) * 1984-11-30 1990-06-12 General Electric Company Liquid propellant gun
US4945809A (en) * 1984-11-30 1990-08-07 General Electric Company Liquid propellant gun
US4634134A (en) * 1985-05-08 1987-01-06 Epworth Manufacturing Co., Inc. Mechanical seal
US4715260A (en) * 1986-12-22 1987-12-29 General Electric Company Seal
EP0321102A2 (en) 1987-12-16 1989-06-21 General Electric Company Liquid propellant weapon system
US4852459A (en) * 1987-12-16 1989-08-01 General Electric Company Liquid propellant weapon system
US4852458A (en) * 1987-12-16 1989-08-01 General Electric Company Liquid propellant weapon system
US4930423A (en) * 1987-12-16 1990-06-05 General Electric Company Liquid propellant weapon system
US4993309A (en) * 1987-12-16 1991-02-19 General Electric Company Liquid propellant weapon system
WO1992001901A1 (de) * 1990-07-19 1992-02-06 Pse Produkt- Und Systementwicklungsgesellschaft M.B.H. Einrichtung an handfeuerwaffen zum abdichten eines patronenlagers
US5345854A (en) * 1990-07-19 1994-09-13 Voere Kufsteiner Geratebau-Und Handelsgesellschaft M.B.H. Device to seal the cartridge chamber on hand weapons
US5305679A (en) * 1991-04-04 1994-04-26 Giat Industries Cylinder mortar
US5343849A (en) * 1992-08-17 1994-09-06 Michael Steer Rapid fire ball gun
US6286743B1 (en) * 1999-02-11 2001-09-11 Hilti Aktiengesellschaft Explosive powder charge-operated setting tool
FR2862377A1 (fr) * 2003-11-14 2005-05-20 Philippe Courty Systeme d'etancheite de chambre pour munitions sans etuis
US20100038864A1 (en) * 2006-10-16 2010-02-18 Nok Corporation Sealing device
US20100201078A1 (en) * 2006-10-16 2010-08-12 Nok Corporation Sealing device
US20100175549A1 (en) * 2007-04-02 2010-07-15 Rheinmetall Waffe Munition Gmbh Obturation of drum cannons
US8459166B2 (en) * 2007-04-02 2013-06-11 Rheinmetall Waffe Munition Gmbh Obturation of drum cannons
US20130014634A1 (en) * 2010-02-01 2013-01-17 Diehl Bgt Defence Gmbh & Co. Kg Sealing ring and propellant charge cartridge
US8833227B2 (en) * 2010-02-01 2014-09-16 Diehl Bgt Defence Gmbh & Co. Kg Sealing ring and propellant charge cartridge

Also Published As

Publication number Publication date
JPS5644360B2 (ru) 1981-10-19
DE2253230C2 (de) 1983-04-14
GB1414653A (en) 1975-11-19
DE7239856U (de) 1977-03-10
JPS4888797A (ru) 1973-11-20
DE2253230A1 (de) 1973-08-16

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