US20150354932A1 - Bullet or Projectile With Spiral Grooves - Google Patents
Bullet or Projectile With Spiral Grooves Download PDFInfo
- Publication number
- US20150354932A1 US20150354932A1 US14/692,713 US201514692713A US2015354932A1 US 20150354932 A1 US20150354932 A1 US 20150354932A1 US 201514692713 A US201514692713 A US 201514692713A US 2015354932 A1 US2015354932 A1 US 2015354932A1
- Authority
- US
- United States
- Prior art keywords
- bullet
- spiral
- spiral grooves
- projectile
- grooves
- 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.)
- Abandoned
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B30/00—Projectiles or missiles, not otherwise provided for, characterised by the ammunition class or type, e.g. by the launching apparatus or weapon used
- F42B30/02—Bullets
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B10/00—Means for influencing, e.g. improving, the aerodynamic properties of projectiles or missiles; Arrangements on projectiles or missiles for stabilising, steering, range-reducing, range-increasing or fall-retarding
- F42B10/02—Stabilising arrangements
- F42B10/22—Projectiles of cannelured type
- F42B10/24—Projectiles of cannelured type with inclined grooves
Abstract
A bullet or projectile having surface geometry in the form of a spiral or partial spiral groove. The spiral can be formed, cast or machined and very in depth, angle, and width. The spiral may go from the nose to the end of the bullet in one continual grove or the spiral may be focused on certain, areas of the bullet. The bullet may consist of any material capable of being formed, cast or machined and be of any caliber.
Description
- Not Applicable
- Not Applicable
- Not Applicable
- The present invention relates to bullets or projectiles, more specifically bullets with spiral or partial spiral grooves on the surface of the bullet. Conventional bullet designs consist of a basically smooth surface. The smooth surface relies on the rifling in the firearm barrel to impart spin on the bullet to obtain its gyroscopic stability. The conventional bullet design with a smooth surface also has limited ballistics based on current smooth surface with no spiral grooves on the surface of the bullet other than what is imparted from the rifling in the barrel.
- The present invention is a unique bullet or projectile design in which the spiral grooves on the bullet can help increase bullet stability and velocity. This is important due to the ability of a equal amount of gunpowder to provide a bullet of the same weight to have a higher velocity over a greater distance or allow less gunpowder to obtain the same bullet velocity. This could produce cost savings to the manufacturer and greater performance to the customer.
- The grooves will also assist in the stability of the bullet do to the increased gyroscopic effects. This could allow less barrel twist to be used while maintaining the appropriate twist rate to achieve the appropriate stability. Less barrel twist could result in less friction which would assist bullet muzzle velocity.
- The spiral grooves on the bullet also help reduce drag. This will result in a bullet velocity that is maintained at a greater rate than a traditional style bullet. A benefit of this is a straighter bullet trajectory where less drop is realized for a given distance. The result of which is greater energy delivered at impact.
- The spiral grooves can start at the nose and continue to the end of the bullet or projectile, but most likely will not continue through the full length of the bullet without an interruption. The interruption in grooves will most likely occur in the driving band to allow a better seal when the bullet is fired.
-
FIG. 1A shows a side view of a bullet with spiral grooves. Detail: A. Nose of bullet. Detail: B. Bore Rider of bullet. Detail: C. Driving Band of bullet. Detail: D. Boat Tail of bullet. Detail: E. Ogive of bullet. Detail: F. Spiral Groove of bullet. -
FIG. 1B shows a front view of a bullet with spiral grooves. Detail: A1. Spiral Groove. -
FIG. 2A shows a side view of a bullet with spiral grooves. Detail: B1. Spiral Groove. -
FIG. 2B shows a front view of a bullet with spiral grooves. Detail: C1. Spiral Groove front view. -
FIG. 2C shows detail of a spiral groove. Detail: D1. Section view of spiral groove. -
FIG. 3A . shows a side view of a bullet with spiral grooves. - A bullet is generally designed with a nose A, ogive E, bore rider B, driving band C and boat tail D, but some designs may not include all of the features or may include additional features. The groove depth, width, and angle can vary depending on the bullet caliber, load, and desired performance. The groove depth and width may also very along the surface of the bullet. For example, the start of the ogive at the nose may have a very minimal groove depth, but as the spiral groove moves along the ogive the groove could get deeper, wider and the angle of the groove could change.
- The grooves could be machined efficiently in an existing bullet with a CNC milling machine or a CNC lathe while utilizing the appropriate tooling to cut the groove. The bullets could also be cast in a mold which contains the grooves, so upon ejection from the mold the bullet is a finished product. The grooves could also be imparted during the forming process of a FMJ bullet or in a injection molding process.
Claims (2)
1. A bullet or projectile comprising of spiral or partial spiral grooves on the surface of the bullet.
2. The grooves can vary in length, width and depth depending on the desired ballistic characteristics.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/692,713 US20150354932A1 (en) | 2014-04-21 | 2015-04-21 | Bullet or Projectile With Spiral Grooves |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201461995781P | 2014-04-21 | 2014-04-21 | |
US14/692,713 US20150354932A1 (en) | 2014-04-21 | 2015-04-21 | Bullet or Projectile With Spiral Grooves |
Publications (1)
Publication Number | Publication Date |
---|---|
US20150354932A1 true US20150354932A1 (en) | 2015-12-10 |
Family
ID=54769322
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/692,713 Abandoned US20150354932A1 (en) | 2014-04-21 | 2015-04-21 | Bullet or Projectile With Spiral Grooves |
Country Status (1)
Country | Link |
---|---|
US (1) | US20150354932A1 (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017197504A1 (en) * | 2016-05-17 | 2017-11-23 | Schwark Todd | Self-spinning bullet and related methods of use |
RU2654115C1 (en) * | 2017-05-22 | 2018-05-16 | Владимир Анатольевич Фролов | Small arms cartridge bullet |
US20190178616A1 (en) * | 2019-02-17 | 2019-06-13 | Dorian Robert Golej | Mushroom Bullet |
WO2020160191A1 (en) * | 2019-01-29 | 2020-08-06 | Mark Thompson | Systems and methods for matching ogive twist and barrel twist |
WO2020261136A3 (en) * | 2019-06-26 | 2021-06-03 | Weidemann Hermann Arthur | A bullet |
CN113607002A (en) * | 2021-08-09 | 2021-11-05 | 南京理工大学工程技术研究院有限公司 | Structure for improving revolving speed of smooth-bore gun projectile |
US20220260351A1 (en) * | 2014-04-30 | 2022-08-18 | G9 Holdings, Llc | Projectile with Enhanced Ballistics |
US11421967B2 (en) * | 2017-06-26 | 2022-08-23 | Superior Shooting Systems, Inc. | Enhanced projectile, cartridge and method for creating precision rifle ammunition with more uniform external ballistic performance and enhanced terminal ballistic performance |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4996924A (en) * | 1987-08-11 | 1991-03-05 | Mcclain Harry T | Aerodynamic air foil surfaces for in-flight control for projectiles |
US5164538A (en) * | 1986-02-18 | 1992-11-17 | Twenty-First Century Research Institute | Projectile having plural rotatable sections with aerodynamic air foil surfaces |
US6439125B1 (en) * | 1998-01-27 | 2002-08-27 | Friedkin Companies, Inc. | Bullet |
US20070074637A1 (en) * | 2005-04-01 | 2007-04-05 | Pontieri James M | Aerodynamic air gun projectile |
-
2015
- 2015-04-21 US US14/692,713 patent/US20150354932A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5164538A (en) * | 1986-02-18 | 1992-11-17 | Twenty-First Century Research Institute | Projectile having plural rotatable sections with aerodynamic air foil surfaces |
US4996924A (en) * | 1987-08-11 | 1991-03-05 | Mcclain Harry T | Aerodynamic air foil surfaces for in-flight control for projectiles |
US6439125B1 (en) * | 1998-01-27 | 2002-08-27 | Friedkin Companies, Inc. | Bullet |
US20070074637A1 (en) * | 2005-04-01 | 2007-04-05 | Pontieri James M | Aerodynamic air gun projectile |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20220260351A1 (en) * | 2014-04-30 | 2022-08-18 | G9 Holdings, Llc | Projectile with Enhanced Ballistics |
WO2017197504A1 (en) * | 2016-05-17 | 2017-11-23 | Schwark Todd | Self-spinning bullet and related methods of use |
RU2654115C1 (en) * | 2017-05-22 | 2018-05-16 | Владимир Анатольевич Фролов | Small arms cartridge bullet |
US11421967B2 (en) * | 2017-06-26 | 2022-08-23 | Superior Shooting Systems, Inc. | Enhanced projectile, cartridge and method for creating precision rifle ammunition with more uniform external ballistic performance and enhanced terminal ballistic performance |
US20230375314A1 (en) * | 2017-06-26 | 2023-11-23 | Superior Shootings Systems, Inc | Method for Creating Precision Rifle Ammunition with More Uniform External Ballistic Performance and Enhanced Terminal Ballistic Performance |
US11815342B2 (en) * | 2017-06-26 | 2023-11-14 | Superior Shooting Systems, Inc. | Method for making precision rifle ammunition with more uniform external ballistic performance and enhanced terminal ballistic performance |
US20230194220A1 (en) * | 2017-06-26 | 2023-06-22 | Superior Shooting Systems, Inc. | Enhanced Projectile for Precision Rifle Ammunition with more Uniform External ballistic performance and Enhanced Terminal Ballistic Performance |
US20230056228A1 (en) * | 2017-06-26 | 2023-02-23 | Superior Shootings Systems, Inc | Method for Making Precision Rifle Ammunition with More Uniform External ballistic performance and Enhanced Terminal Ballistic Performance |
WO2020160191A1 (en) * | 2019-01-29 | 2020-08-06 | Mark Thompson | Systems and methods for matching ogive twist and barrel twist |
US10989507B2 (en) | 2019-01-29 | 2021-04-27 | Mark Thompson | Systems and methods for matching ogive twist and barrel twist |
US20190178616A1 (en) * | 2019-02-17 | 2019-06-13 | Dorian Robert Golej | Mushroom Bullet |
WO2020261136A3 (en) * | 2019-06-26 | 2021-06-03 | Weidemann Hermann Arthur | A bullet |
CN113607002A (en) * | 2021-08-09 | 2021-11-05 | 南京理工大学工程技术研究院有限公司 | Structure for improving revolving speed of smooth-bore gun projectile |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |