FR2280873A1 - Hydropneumatic underwater gun - has hydraulic pump for additional compression of pressurised air - Google Patents

Hydropneumatic underwater gun - has hydraulic pump for additional compression of pressurised air

Info

Publication number
FR2280873A1
FR2280873A1 FR7330397A FR7330397A FR2280873A1 FR 2280873 A1 FR2280873 A1 FR 2280873A1 FR 7330397 A FR7330397 A FR 7330397A FR 7330397 A FR7330397 A FR 7330397A FR 2280873 A1 FR2280873 A1 FR 2280873A1
Authority
FR
France
Prior art keywords
piston
hydraulic pump
hydropneumatic
pressurised air
additional compression
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Withdrawn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
FR7330397A
Other languages
French (fr)
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.)
SANNER DANIEL
Original Assignee
SANNER DANIEL
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 SANNER DANIEL filed Critical SANNER DANIEL
Priority to FR7330397A priority Critical patent/FR2280873A1/en
Publication of FR2280873A1 publication Critical patent/FR2280873A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41B—WEAPONS FOR PROJECTING MISSILES WITHOUT USE OF EXPLOSIVE OR COMBUSTIBLE PROPELLANT CHARGE; WEAPONS NOT OTHERWISE PROVIDED FOR
    • F41B11/00—Compressed-gas guns, e.g. air guns; Steam guns
    • F41B11/80—Compressed-gas guns, e.g. air guns; Steam guns specially adapted for particular purposes
    • F41B11/83—Compressed-gas guns, e.g. air guns; Steam guns specially adapted for particular purposes for launching harpoons

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Reciprocating Pumps (AREA)

Abstract

The gun is for underwater hunting at long or short range, and incorporates means for additional easy compression of the pressurized air already in the air chamber. Typically, this can be in the form of a piston sliding in a tube closed at one end by a union incorporating an inflation valve. To give the extra compression, the piston can be thrust by a hydraulic pump comprising a tube, a valved piston, a lever and a non-return valve. The velocity ratio of the lever allows water, in which the pump is immersed, to be injected into the chamber on the other side of the first piston mentioned, thus forcing it rearwards and compressing the air behind it further.
FR7330397A 1973-08-20 1973-08-20 Hydropneumatic underwater gun - has hydraulic pump for additional compression of pressurised air Withdrawn FR2280873A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7330397A FR2280873A1 (en) 1973-08-20 1973-08-20 Hydropneumatic underwater gun - has hydraulic pump for additional compression of pressurised air

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7330397A FR2280873A1 (en) 1973-08-20 1973-08-20 Hydropneumatic underwater gun - has hydraulic pump for additional compression of pressurised air

Publications (1)

Publication Number Publication Date
FR2280873A1 true FR2280873A1 (en) 1976-02-27

Family

ID=9124181

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7330397A Withdrawn FR2280873A1 (en) 1973-08-20 1973-08-20 Hydropneumatic underwater gun - has hydraulic pump for additional compression of pressurised air

Country Status (1)

Country Link
FR (1) FR2280873A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2617954A1 (en) * 1987-07-07 1989-01-13 Ctiemge HYDROPNEUMATIC HARPOON
WO2000008408A1 (en) * 1998-08-01 2000-02-17 Neven Ninic Underwater spear-gun with free piston in the spear
US6170477B1 (en) * 1998-02-26 2001-01-09 Nicolas James Horlock Pneumatic spear gun
EP1024340A3 (en) * 1999-01-29 2001-05-23 Davis Schwesinger Powered bow having internal energy storage
WO2013109231A1 (en) * 2012-01-18 2013-07-25 Tasyagan Bahtiyar Air rifle or air pistol with a gas piston

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2617954A1 (en) * 1987-07-07 1989-01-13 Ctiemge HYDROPNEUMATIC HARPOON
GR880100423A (en) * 1987-07-07 1989-04-12 C T I E M G E Hydropneumatic harpoon
US6170477B1 (en) * 1998-02-26 2001-01-09 Nicolas James Horlock Pneumatic spear gun
WO2000008408A1 (en) * 1998-08-01 2000-02-17 Neven Ninic Underwater spear-gun with free piston in the spear
EP1024340A3 (en) * 1999-01-29 2001-05-23 Davis Schwesinger Powered bow having internal energy storage
WO2013109231A1 (en) * 2012-01-18 2013-07-25 Tasyagan Bahtiyar Air rifle or air pistol with a gas piston

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Legal Events

Date Code Title Description
ST Notification of lapse
AR Application made for restoration
ST Notification of lapse
BD Lapse confirmed