Patent US4164903A successfully refreshed from Google Patents.
US4164903A
Expired / Lapsed
US
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Shotgun wad for use as a practice projectile
Assignee: Individual
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Filing: 1977-09-08
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Granted: 1979-08-21
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Expires: 1997-09-08
Abstract
Abstract A novel shotgun wad is disclosed for use in a practice cartridge which includes a conventional tubular casing having a closed end and an open opposite end, the wad having a first cup portion facing a detonable primer charge at the closed end of the casing, and having a second cup portion facing the open end of the casing and defining a rounded aerodynamic flight end. Upon detonation of the primer charge, the wad is projected outwardly from the casing with the rounded flight end thereof facilitating a truer flight trajectory than obtainable without the rounded end.
Inventors
- 👤 Gordon F. Bouza
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:19
CPC Classifications
F; F42; F42B; F42B8/00; F42B8/02
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
215 words
An ammunition cartridge for practice shooting comprising a tubular casing of predetermined longitudinal length having a closed end and an opposite open end, a detonable primer disposed adjacent said closed end, a wad disposed within said casing and adapted to be projected therefrom, and a charge disposed between said wad and said closed end of said casing so that detonation of said primer effects projection of said wad from said casing, said wad having a first cup portion defined by a plurality of longitudinal fingers extending in the direction of said closed end of said casing, said wad having a second cup portion including a base end wall connected to said first cup portion and having a circumferential edge adapted to engage the internal surface of said tubular casing, said base end wall including a flight end facing said open end of said cartridge and defined by a generally conical surface establishing an axially outwardly projecting aerodynamic air flow surface on said wad to facilitate flight thereof, said wad having a longitudinal length such that said wad is disposed substantially fully within said tubular casing, detonation of said primer being operative to effect projection of said wad outwardly of said open end of said casing with said wad maintaining its structural integrity throughout flight thereof.
Claim 2
Dependent Claim
215 words
An ammunition cartridge for practice shooting comprising a tubular casing of predetermined longitudinal length having a closed end and an opposite open end, a detonable primer disposed adjacent said closed end, a wad disposed within said casing and adapted to be projected therefrom, and a charge disposed between said wad and said closed end of said casing so that detonation of said primer effects projection of said wad from said casing, said wad having a first cup portion defined by a plurality of longitudinal fingers extending in the direction of said closed end of said casing, said wad having a second cup portion including a base end wall connected to said first cup portion and having a circumferential edge adapted to engage the internal surface of said tubular casing, said base end wall including a flight end facing said open end of said cartridge and defined by a generally conical surface establishing an axially outwardly projecting aerodynamic air flow surface on said wad to facilitate flight thereof, said wad having a longitudinal length such that said wad is disposed substantially fully within said tubular casing, detonation of said primer being operative to effect projection of said wad outwardly of said open end of said casing with said wad maintaining its structural integrity throughout flight thereof.
Claim 3
Dependent Claim
77 words
The improvement as defined in claim 1 wherein said second cup portion includes an annular wall the outer peripheral surface of which is adapted to engage the interior surface of said tubular casing, said annular wall defining with said base end wall a recess, said rounded flight end having a portion received and retained within said recess and extending outwardly therefrom to define a generally conical aerodynamic air flow surface on the forward end of said wad.
Claim 4
Dependent Claim
15 words
The improvement as defined in claim 1 wherein said rounded flight end is substantially hollow.
Claim 5
Dependent Claim
26 words
The improvement as defined in claim 1 wherein said rounded flight end forming said aerodynamic air flow surface is formed from a solid generally pointed member.
Claim 6
Dependent Claim
20 words
The practice cartridge as defined in claim 4 wherein said wad and said rounded flight end are formed of plastic.
Claim 7
Dependent Claim
177 words
A wad for use in a practice shotgun cartridge having a tubular casing of predetermined longitudinal length with a closed end and an open opposite end, said wad including a first cup portion normally adapted to contain a shot loading and having a second cup portion normally adapted to contain a charge, said wad having a generally conically shaped flight end on second cup portion extending axially outwardly thereof in a direction opposite to said first cup portion to facilitate insertion of said wad into a cartridge casing with said first cup portion facing the closed end of said cartridge casing, said first cup portion including a plurality of longitudinal fingers extending in a direction opposite to said flight end, said wad having a longitudinal length such that said wad may be substantially fully received within said tubular casing with said flight end facing the open end of said cartridge case to facilitate projection of said wad from said cartridge casing with said generally conically shaped flight end thereof defining an aerodynamic flight surface for said wad.
Claim 8
Dependent Claim
177 words
A wad for use in a practice shotgun cartridge having a tubular casing of predetermined longitudinal length with a closed end and an open opposite end, said wad including a first cup portion normally adapted to contain a shot loading and having a second cup portion normally adapted to contain a charge, said wad having a generally conically shaped flight end on second cup portion extending axially outwardly thereof in a direction opposite to said first cup portion to facilitate insertion of said wad into a cartridge casing with said first cup portion facing the closed end of said cartridge casing, said first cup portion including a plurality of longitudinal fingers extending in a direction opposite to said flight end, said wad having a longitudinal length such that said wad may be substantially fully received within said tubular casing with said flight end facing the open end of said cartridge case to facilitate projection of said wad from said cartridge casing with said generally conically shaped flight end thereof defining an aerodynamic flight surface for said wad.
Claim 9
Dependent Claim
34 words
A wad as defined in claim 6 wherein said generally pointed flight end on said second cup portion comprises a separate flight end cap secured to said second cup portion in axial alignment therewith.
Claim 10
Dependent Claim
13 words
A wad as defined in claim 6 wherein said flight end is solid.
Claim 11
Dependent Claim
13 words
A wad as defined in claim 6 wherein said flight end is hollow.
Claim 12
Dependent Claim
16 words
A wad as defined in claim 7 wherein said separate flight end is formed of plastic.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-08-20 | 1983-02-19 | 1983-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-08-20 | 1987-02-19 | 1987-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-08-20 | 1991-02-19 | 1991-08-21 | $7700.00 | Window Closed / Lapsed |