FI951363A - Press Top Chambers - Google Patents
Press Top Chambers Download PDFInfo
- Publication number
- FI951363A FI951363A FI951363A FI951363A FI951363A FI 951363 A FI951363 A FI 951363A FI 951363 A FI951363 A FI 951363A FI 951363 A FI951363 A FI 951363A FI 951363 A FI951363 A FI 951363A
- Authority
- FI
- Finland
- Prior art keywords
- bullet
- pressure
- gunpowder
- combustion
- chamber
- Prior art date
Links
Landscapes
- Emergency Lowering Means (AREA)
- Solid-Fuel Combustion (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
This invention belongs to the field of internal ballistics, its object being to reduce the imbalance between the rapid combustion of gunpowder or other propellant, which causes the rise in pressure, and the low acceleration of the bullet in the initial stage. When the gunpowder 8 is ignited in the casing or combustion chamber 9, the bullet 1 starts moving when the pressure has risen sufficiently. The cylinder-shaped part 6 of the bullet closes off the front edge 2 of the top- pressure chamber. On its way to the barrel 7, the rear edge 5 of the cylinder-shaped part of the bullet, after it has passed the rear edge of the top-pressure chamber 3, opens the inlet for the ignited material into the top- pressure chamber 4. The combustion chamber suddenly increases in size, both pressure and temperature drop and the rate of combustion of the gunpowder is lower for a while. The bullet thus gets extra time to accelerate to a sufficient velocity. <IMAGE>
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI951363A FI97912C (en) | 1995-03-23 | 1995-03-23 | Press Top Chambers |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI951363 | 1995-03-23 | ||
FI951363A FI97912C (en) | 1995-03-23 | 1995-03-23 | Press Top Chambers |
Publications (4)
Publication Number | Publication Date |
---|---|
FI951363A0 FI951363A0 (en) | 1995-03-23 |
FI951363A true FI951363A (en) | 1996-09-24 |
FI97912B FI97912B (en) | 1996-11-29 |
FI97912C FI97912C (en) | 1997-03-10 |
Family
ID=8543106
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI951363A FI97912C (en) | 1995-03-23 | 1995-03-23 | Press Top Chambers |
Country Status (1)
Country | Link |
---|---|
FI (1) | FI97912C (en) |
-
1995
- 1995-03-23 FI FI951363A patent/FI97912C/en active
Also Published As
Publication number | Publication date |
---|---|
FI97912C (en) | 1997-03-10 |
FI951363A0 (en) | 1995-03-23 |
FI97912B (en) | 1996-11-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
GB | Transfer or assigment of application |
Owner name: PATRIA VAMMAS OY |
|
BB | Publication of examined application | ||
PC | Transfer of assignment of patent |
Owner name: PATRIA VAMMAS OY |