Patent US4619062A successfully refreshed from Google Patents.
US4619062A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety device for firearms using removable magazines
Assignee: Individual
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Filing: 1985-10-08
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Granted: 1986-10-28
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Expires: 2005-10-08
Abstract
Abstract A safety device for a repeating firearm includes a main body which fits in the magazine well of the firearm, closing its outer end. An outer end of the main body is clearly visible at the outer end of the magazine well when the main body is properly located therein. A chamber-blocking member movably attached to the main body excludes cartridges from the firing chamber of the weapon and, in one embodiment of the invention, includes a barrier which prevents a firing pin from reaching the primer of a cartridge which may be located in the firing chamber undetected. The chamber-blocking member, in one embodiment of the invention, is pivotably attached to the main body. In another embodiment of the invention the chamber-blocking member is a cylindrical plug attached to the main body by a flexible cable.
Inventors
- 👤 David A. Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:47
CPC Classifications
F; F41; F41A; F41A17/00; F41A17/42; F41A17/44; F41A17/64
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
181 words
A safety device for use in a firearm, of the type having a barrel defining a cartridge receiving and firing chamber having a breech opening, a longitudinally movable breech-closing member, and a magazine well for receiving and holding a removable magazine capable of holding a cartridge to be fed into the cartridge receiving and firing chamber, the safety device comprising: (a) a main body of a size and shape which fits within said magazine well, preventing insertion of a magazine thereinto, said main body including an inner end and an outer end; (b) a chamber-blocking element; and (c) connecting means attached to said main body for connecting said chamber-blocking element movably thereto, said chamber-blocking element being movable between a first position, in which said chamber-blocking element is aligned with said main body so that said main body can be inserted into said magazine well preceded by said chamber-blocking element, and a forwardly located second position in which at least a portion of said chamber-blocking element obstructs said breech opening, preventing insertion of a cartridge into said cartridge receiving and firing chamber.
Claim 2
Dependent Claim
181 words
A safety device for use in a firearm, of the type having a barrel defining a cartridge receiving and firing chamber having a breech opening, a longitudinally movable breech-closing member, and a magazine well for receiving and holding a removable magazine capable of holding a cartridge to be fed into the cartridge receiving and firing chamber, the safety device comprising: (a) a main body of a size and shape which fits within said magazine well, preventing insertion of a magazine thereinto, said main body including an inner end and an outer end; (b) a chamber-blocking element; and (c) connecting means attached to said main body for connecting said chamber-blocking element movably thereto, said chamber-blocking element being movable between a first position, in which said chamber-blocking element is aligned with said main body so that said main body can be inserted into said magazine well preceded by said chamber-blocking element, and a forwardly located second position in which at least a portion of said chamber-blocking element obstructs said breech opening, preventing insertion of a cartridge into said cartridge receiving and firing chamber.
Claim 3
Dependent Claim
23 words
The safety device of claim 1 wherein said connecting means comprises fastening means for attaching said base plate pivotably to said main body.
Claim 4
Dependent Claim
32 words
The safety device of claim 1, said main body including an outer end at least large enough to close said magazine well when said safety device is located operatively in said firearm.
Claim 5
Dependent Claim
26 words
The safety device of claim 1, said firearm including a slide latch and said main body including plunger means located thereon, for operating said slide latch.
Claim 6
Dependent Claim
65 words
The safety device of claim 1 wherein said chamber-blocking element comprises a base plate and a breech barrier portion attached to said base plate and located rearwardly adjacent said breech opening of said cartridge receiving and firing chamber, preventing insertion of a cartridge into said chamber, when said safety device is located operatively in a firearm and said chamber-blocking element is in said second position.
Claim 7
Dependent Claim
60 words
The safety device of claim 5, said connecting means including an ear connected with said base plate, said ear defining an elongated hole, and said safety device further including a pivot pin extending laterally through said elongated hole into said main body, connecting said chamber-blocking member to said main body so as to be pivotable and slidable with respect thereto.
Claim 8
Dependent Claim
51 words
The safety device of claim 1 wherein said main body includes an outer end which, when said safety device is installed operatively in said firearm, extends outward from said magazine well, a distance visibly and noticeably greater than a distance to which a magazine protrudes when located in said magazine well.
Claim 9
Dependent Claim
61 words
The safety device of claim 1, wherein said chamber-blocking member is a generally cylindrical plug, said connecting means including an elongate flexible cable extending between said plug and said main body, said cable being long enough to permit said plug to be inserted in said cartridge receiving and firing chamber only when said main body is located within said magazine well.
Claim 10
Dependent Claim
39 words
The safety device of claim 5, including locator tab means associated with said base plate, for extending from said base plate portion toward said barrel and limiting movement of said breech barrier into said cartridge receiving and firing chamber.
Claim 11
Dependent Claim
67 words
The safety device of claim 5, said barrel of said firearm including a breech end having a breech face, and said cartridge receiving and firing chamber including a loading ramp portion thereof, said base plate portion of said chamber-blocking member including a position limiting member located thereon and extending an appropriate distance to engage said breech face and prevent said breech barrier from contacting said loading ramp.
Claim 12
Dependent Claim
34 words
The safety device of claim 5, said firearm including a firing pin having a maximum protrusion from said breech-closing member, and said breech barrier having a thickness at least equal to said maximum protrusion.
Claim 13
Dependent Claim
17 words
The safety device of claim 5, said breech barrier including an upper margin defining a notch therein.
Claim 14
Dependent Claim
47 words
The safety device of claim 5 wherein said base plate extends forward and is located beneath and clear of the path of said longitudinally movable breech closing member when said chamber-blocking member is in said second position, when said safety device is operatively located in said firearm.
Claim 15
Dependent Claim
59 words
The safety device of claim 6, including limit stop located on said ear, and said main body including means located thereon for engaging said limit stop and thereby requiring said chamber-blocking member to be pivoted to a predetermined orientation with respect to said main body when said pivot pin is located within a predetermined portion of said elongated hole.
Claim 16
Dependent Claim
35 words
The safety device of claim 6, said chamber-blocking member being pivotable with respect to said main body to said first position when said pivot pin is located within a predetermined portion of said elongated hole.
Claim 17
Dependent Claim
64 words
The safety device of claim 6, said chamber-blocking member extending forwardly from said main body toward said cartridge receiving and firing chamber, and said breech barrier of said chamber-blocking member being located rearwardly adjacent said cartridge receiving and firing chamber, when said safety device is operatively located in said firearm and said pivot pin is located in a predetermined portion of said elongated hole.
Claim 18
Dependent Claim
27 words
The safety device of claim 7, said outer end having a distinctive shape different from the shape of a corresponding portion of a magazine for said firearm.
Claim 19
Dependent Claim
20 words
The safety device of claim 7, said outer end having a color contrasting clearly with the color of said firearm.
Claim 20
Dependent Claim
17 words
The safety device of claim 8, said plug including a rear face defining a centrally-located cavity therein.
Claim 21
Dependent Claim
32 words
The safety device of claim 8, said plug being of approximately the same size as a casing of a cartridge of a size which is intended to be fired from said firearm.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-10-27 | 1990-04-28 | 1990-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-10-27 | 1994-04-28 | 1994-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-10-27 | 1998-04-28 | 1998-10-28 | $7700.00 | Window Closed / Lapsed |