← Back to Patent Explorer
US4777752A Expired / Lapsed US ⏱️ 0.0 years remaining

Blank magazine

Assignee: Individual
•
Filing: 1987-06-09
•
Granted: 1988-10-18
•
Expires: 2007-06-09
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A blank magazine for feeding blank rounds to a bolt-equipped firearm. The magazine has a back wall and a front wall. The distance between the inner surface of the back wall and the inner surface of the front wall is less than the length of a standard round but is greater than the length of a blank round. The magazine also has structure which prevents any standard round from being fed by the bolt of the firearm.

Inventors

  • 👤 William J. Howard

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 09:12
CPC Classifications
F; F41; F41A; F41A9/00; F41A9/61; F41A9/64; F41A9/65; F41A33/00

Claims Analysis

Total Claims: 11
Claim 1
Independent Claim 148 words
A blank magazine for feeding blank rounds to the chamber of a bolt-equipped firearm; said magazine comprising: A. a back wall having an inner surface; and B. a front wall having an inner surface and a top; wherein the distance between the inner surface of the back wall and the inner surface of the front wall is less than the length of a standard round but is greater than the length of a blank round; and C. means for preventing any standard round from being fed by the bolt to the chamber of the firearm; and D. wherein said means constitutes means for holding the base of any standard round below the bolt such that an advancing bolt does not feed the standard round to the chamber; and E. wherein the blank round has an overall length that is less than the overall length of a standard round.
Claim 2
Dependent Claim 148 words
A blank magazine for feeding blank rounds to the chamber of a bolt-equipped firearm; said magazine comprising: A. a back wall having an inner surface; and B. a front wall having an inner surface and a top; wherein the distance between the inner surface of the back wall and the inner surface of the front wall is less than the length of a standard round but is greater than the length of a blank round; and C. means for preventing any standard round from being fed by the bolt to the chamber of the firearm; and D. wherein said means constitutes means for holding the base of any standard round below the bolt such that an advancing bolt does not feed the standard round to the chamber; and E. wherein the blank round has an overall length that is less than the overall length of a standard round.
Claim 3
Dependent Claim 24 words
The magazine of claim 1, wherein the inner surface of the back wall is substantially parallel to the inner surface of the front wall.
Claim 4
Dependent Claim 15 words
The magazine of claim 1, wherein the blank rounds are shorter than the standard rounds.
Claim 5
Dependent Claim 10 words
The magazine of claim 1 constructed substantially completely of thermoplastic.
Claim 6
Dependent Claim 10 words
The magazine of claim 4, wherein the thermoplastic is nylon.
Claim 7
Dependent Claim 10 words
The magazine of claim 4, wherein the thermoplastic is polypropylene.
Claim 8
Dependent Claim 304 words
A magazine for holding a plurality of blank cartridges and for feeding these blank cartridges sequentially to a firearm having a bolt which cooperates with a chamber; wherein said magazine will receive only one standard round having a projectile; and will not permit that standard round to be fed to the chamber of the firearm; said magazine comprising: A. a front wall having a top and an inner surface; and B. a back wall having an inner surface; and C. a left side wall joining the left side of the back wall to the left side of the front wall; the top of said left side wall terminating in a left cartridge-retaining lip; and , D. a right side wall joining the right side of the back wall to the right side of the front wall; the top of said right side wall terminating in a right cartridge-retaining lip; and wherein the distance between the inner surface of the front wall and the inner surface of the back wall is less than the length of a standard round but is greater than the length of a blank round; thereby preventing the magazine from holding more than one standard round; and wherein the top of the front wall supports the projectile of any standard round and wherein one cartridge-retaining lip contacts the standard round to hold the base of the standard round below the bottom of the bolt, thereby preventing the bolt from feeding the standard round to the chamber of the firearm; and wherein said magazine further comprises means for holding the base of any standard round below the bolt such that an advancing bolt does not feed the standard round to the chamber; and wherein the blank round has an overall length that is less than the overall length of a standard round.
Claim 9
Dependent Claim 304 words
A magazine for holding a plurality of blank cartridges and for feeding these blank cartridges sequentially to a firearm having a bolt which cooperates with a chamber; wherein said magazine will receive only one standard round having a projectile; and will not permit that standard round to be fed to the chamber of the firearm; said magazine comprising: A. a front wall having a top and an inner surface; and B. a back wall having an inner surface; and C. a left side wall joining the left side of the back wall to the left side of the front wall; the top of said left side wall terminating in a left cartridge-retaining lip; and , D. a right side wall joining the right side of the back wall to the right side of the front wall; the top of said right side wall terminating in a right cartridge-retaining lip; and wherein the distance between the inner surface of the front wall and the inner surface of the back wall is less than the length of a standard round but is greater than the length of a blank round; thereby preventing the magazine from holding more than one standard round; and wherein the top of the front wall supports the projectile of any standard round and wherein one cartridge-retaining lip contacts the standard round to hold the base of the standard round below the bottom of the bolt, thereby preventing the bolt from feeding the standard round to the chamber of the firearm; and wherein said magazine further comprises means for holding the base of any standard round below the bolt such that an advancing bolt does not feed the standard round to the chamber; and wherein the blank round has an overall length that is less than the overall length of a standard round.
Claim 10
Dependent Claim 245 words
A magazine for holding a plurality of blank rounds devoid of projectiles and for feeding these blank rounds sequentially to a firearm having a bolt which cooperates with a chamber; wherein said magazine will receive only one projectile-containing round and will not permit that projectile-containing round to be fed to the chamber of the firearm; said magazine comprising: A. a front wall having a top and an integral inner surface; and B. a back wall having an inner surface; and C. a left side wall fixedly joining the left side of the back wall to the left side of the front wall; the top of said left side wall terminating in a left cartridge-retaining lip; and D. a right side wall fixedly joining the right side of the back wall to the right side of the front wall; the top of said right side wall terminating in a right catridge-retaining lip; and wherein the distance between the inner surface of the front wall and the inner surface of the back wall is less than the length of a standard round but is greater than the length of a blank round; thereby constituting means for preventing the magazine from holding more than one projectile-containing round and wherein one cartridge-retaining lip contacts the projectile-containing round to hold the base of the projectile-containing round below the bottom of the bolt, thereby constituting means for preventing the bolt from feeding the projectile-containing round to the chamber of the firearm.
Claim 11
Dependent Claim 245 words
A magazine for holding a plurality of blank rounds devoid of projectiles and for feeding these blank rounds sequentially to a firearm having a bolt which cooperates with a chamber; wherein said magazine will receive only one projectile-containing round and will not permit that projectile-containing round to be fed to the chamber of the firearm; said magazine comprising: A. a front wall having a top and an integral inner surface; and B. a back wall having an inner surface; and C. a left side wall fixedly joining the left side of the back wall to the left side of the front wall; the top of said left side wall terminating in a left cartridge-retaining lip; and D. a right side wall fixedly joining the right side of the back wall to the right side of the front wall; the top of said right side wall terminating in a right catridge-retaining lip; and wherein the distance between the inner surface of the front wall and the inner surface of the back wall is less than the length of a standard round but is greater than the length of a blank round; thereby constituting means for preventing the magazine from holding more than one projectile-containing round and wherein one cartridge-retaining lip contacts the projectile-containing round to hold the base of the projectile-containing round below the bottom of the bolt, thereby constituting means for preventing the bolt from feeding the projectile-containing round to the chamber of the firearm.

References Cited (Backward Citations)

US1407633A Cited
US2296729A Cited
US2840944A Cited
US4139959A Cited
US4413437A Cited
US4472900A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1991-10-18 1992-04-18 1992-10-18 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1995-10-18 1996-04-18 1996-10-18 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1999-10-18 2000-04-18 2000-10-18 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag