US3795196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Projectile with a loose hard core
Assignee: Mauser Werke AG
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Filing: 1972-12-27
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Granted: 1974-03-05
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Expires: 1992-12-27
Abstract
Abstract In a projectile with a loose hard core therein the core is provided at its lower end face with at least one unevenness, such as a notch, a groove, a tooth or the like, so that upon firing the projectile the inner face at the bottom wall of the hollow body in which the core is loosely arranged, but secured against longitudinal displacement, will come into pressure engagement with said unevenness and will establish a coupling connection between the core and the hollow body so that the twisting movement of said body will be transmitted to said core.
Inventors
- 👤 H Hillenbrand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:26
CPC Classifications
F; F42; F42B; F42B12/00; F42B12/02; F42B12/04; F42B12/06
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
164 words
A twist projectile particularly a sabot projectile for being propelled through a rifled gun barrel comprising: a hollow shell having a tapered front end and a closed rear end with an axially elongate hollow chamber therein with a transversely extending chamber base; said chamber base having a forwardly facing surface; a core positioned within said chamber and being loosely mounted within said chamber so as to be free to have axial pressure movement within said chamber against said forwardly facing surface, said core being of a harder material than said shell and having a rear face forming a core base overlying said chamber base, said core and said hollow shell defining an interengageable projection and recess surfaces in the vicinity of said core base and said chamber base which are movable into coupling engagement as the shell is acceleratingly propelled through the gun barrel and to cause said projection to lock against said shell surface and the core to be rotated with the shell.
Claim 2
Dependent Claim
164 words
A twist projectile particularly a sabot projectile for being propelled through a rifled gun barrel comprising: a hollow shell having a tapered front end and a closed rear end with an axially elongate hollow chamber therein with a transversely extending chamber base; said chamber base having a forwardly facing surface; a core positioned within said chamber and being loosely mounted within said chamber so as to be free to have axial pressure movement within said chamber against said forwardly facing surface, said core being of a harder material than said shell and having a rear face forming a core base overlying said chamber base, said core and said hollow shell defining an interengageable projection and recess surfaces in the vicinity of said core base and said chamber base which are movable into coupling engagement as the shell is acceleratingly propelled through the gun barrel and to cause said projection to lock against said shell surface and the core to be rotated with the shell.
Claim 3
Dependent Claim
28 words
A projectile for being propelled through a rifled gun barrel constructed in accordance with claim 1: wherein said projection is in the form of a radially extending tooth.
Claim 4
Dependent Claim
30 words
A projectile for being propelled through a rifled gun barrel constructed in accordance with claim 1: wherein said projection is in the form of a plurality of radially extending teeth.
Claim 5
Dependent Claim
37 words
A projectile for being propelled through a rifled gun barrel constructed in accordance with claim 1: wherein said projection is constructed by material removed from separated areas on the base of the core defining said projection therebetween.
Claim 6
Dependent Claim
34 words
A projectile for being propelled through a rifled gun barrel constructed in accordance with claim 1: wherein said core has radially extending grooves formed in the base to provide a plurality of said projections.
Claim 7
Dependent Claim
29 words
A projectile for being propelled through a rifled gun barrel constructed in accordance with claim 1: wherein the core is radially supported at axially spaced locations within said chamber.
Claim 8
Dependent Claim
33 words
A projectile for being propelled through a rifled gun barrel constructed in accordance with claim 1: wherein the core is held centered at its base by a conical surface within the shell chamber.
Claim 9
Dependent Claim
133 words
A twist projectile with a hard core particularly a sabot projectile in which the hard core is concentrically and loosely arranged within a projectile jacket, comprising a hollow projectile jacket having an interior reCeiving space with a transversely extending bottom, a hard projectile core arranged within said projectile jacket and having a front pointed end and a rear substantially planar end loosely engaged on said bottom, holding means holding said projectile core within said receiving space at a spaced location from the forward end of said jacket, said projectile core and said jacket having surfaces bounding said rear planar end and said bottom respectively defining an interengageable projection and recess which upon firing become rearwardly interengaged in rotative coupling engagement whereby the spin of said projectile jacket is imparted to said projectile core.
Claim 10
Dependent Claim
133 words
A twist projectile with a hard core particularly a sabot projectile in which the hard core is concentrically and loosely arranged within a projectile jacket, comprising a hollow projectile jacket having an interior reCeiving space with a transversely extending bottom, a hard projectile core arranged within said projectile jacket and having a front pointed end and a rear substantially planar end loosely engaged on said bottom, holding means holding said projectile core within said receiving space at a spaced location from the forward end of said jacket, said projectile core and said jacket having surfaces bounding said rear planar end and said bottom respectively defining an interengageable projection and recess which upon firing become rearwardly interengaged in rotative coupling engagement whereby the spin of said projectile jacket is imparted to said projectile core.
Claim 11
Dependent Claim
37 words
A twist projectile according to claim 8, wherein said holding means holding said projectile core within said receiving space comprises at least one ring surrounding said projectile pointed end and extending between said projectile and said jacket.
Claim 12
Dependent Claim
50 words
A projectile according to claim 8, wherein said projectile jacket and said projectile core are complementarily tapered in the vicinity of the trailing portion of said projectile core to said bottom, said projectile jacket and said projectile core having at least one interengaged projection and recess in said tapered portion.
References Cited (Backward Citations)
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Cited
US741328A
Cited
FR762887A
Cited
CH197329A
Cited
GB752448A
Cited
US3370535A
Cited
US3348485A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-04 | 1977-09-03 | 1978-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-04 | 1981-09-03 | 1982-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-04 | 1985-09-03 | 1986-03-05 | $7700.00 | Window Closed / Lapsed |