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 airInfo
- 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- Withdrawn
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.
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)
| 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 |
-
1973
- 1973-08-20 FR FR7330397A patent/FR2280873A1/en not_active Withdrawn
Cited By (6)
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20130192576A1 (en) | Toy Gun With Fluid Firing Switch | |
| ES439651A1 (en) | Pneumatic system including auxiliary output | |
| US4196788A (en) | Device for propelling a liquid projectile in a liquid medium with a view to creating a shock wave | |
| FR2280873A1 (en) | Hydropneumatic underwater gun - has hydraulic pump for additional compression of pressurised air | |
| GB1289046A (en) | ||
| GB1478672A (en) | Arrangement and device for the extraction of part of the recoil energy of a cannon or like weapon | |
| FR2071513A5 (en) | Hydraulic pressure pulse generator | |
| FR2303976A1 (en) | Hydraulic ram supply system - has two pipes with flow restrictors, one only uncovered by piston near stroke end | |
| GB1332463A (en) | Guns | |
| US2959132A (en) | Compound piston hydraulic pump | |
| FR2308781A1 (en) | Lubricant piston pump pneumatic oscillator - consists of piston with reversing valve and hydraulic brake | |
| GB1407979A (en) | Watergoing craft | |
| FR2063798A5 (en) | Hydraulic pressure pulse generator | |
| JPS5774135A (en) | High pressure injection molding method and device therefor | |
| GB1262150A (en) | Gun having a pneumatic barrel recuperator and barrel moving means | |
| FR2412732A1 (en) | Hydraulic system for injection moulding platens - giving low and high pressure thrusts without use of high intensity pumps or compressors | |
| DE713978C (en) | Electrically operated submersible pump set | |
| NL7403631A (en) | Underwater spear gun with rear spear end - this fits in sleeve communicating with water until trigger is pulled | |
| IT1129866B (en) | Manually well water pump | |
| FR2303978A1 (en) | Hydraulically operated ram - with passages in piston rod for fluid to downstream receiver | |
| NL7702748A (en) | Mixer for fluids, esp. constituents of polyurethane foam - is injection gun loaded by pneumatically operated metering pumps | |
| SU314413A1 (en) | COMPRESSOR UNIT FOR AIR DIVERS AIR SUPPLY | |
| AT218308B (en) | Device for starting free piston compressors with external compression chambers | |
| FR2305612A1 (en) | Double pistoned hydraulic pump - has calibrated spring coupling pistons with different pressure operation | |
| FR2269439A1 (en) | Pressure control valve for hydraulic circuit - with differential piston between pump and reservoir to uncouple pump below maximum reservoir pressure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse | ||
| AR | Application made for restoration | ||
| ST | Notification of lapse | ||
| BD | Lapse confirmed |