US3747251A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety mechanism having cocked indicator
Assignee: CFPI Inc A CORP OF
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Filing: 1971-12-21
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Granted: 1973-07-24
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Expires: 1991-12-21
Abstract
Abstract A firearm has a falling breechblock movable between retracted and battery positions. A striker, adapted to fire a cartridge, is mounted within a passage in the breechblock for movement between cocked and firing positions. The breechblock is provided with a trigger mechanism to control the release of the striker from the cocked position. The trigger mechanism includes a sear to engage the striker to maintain it in the cocked position, and a trigger to release the sear from such engagement. A cam plate member, whose discrete positions portray the firearms condition, is pivotally mounted upon the trigger mechanism and includes first and second surfaces defining an apex therebetween which are adapted to contact a roller secured to the sear. When the roller is in engagement with the first surface, the striker cannot be released from the cocked position by movement of the trigger. When the firearm is cocked and ready, the roller rests upon the second surface of the cam plate member so as to subsequently displace the cam plate member when the striker moves from the cocked position to the firing position. When the roller engages the first surface, or the apex of the cam plate member, the searing surface of the trigger is spaced from the sear so that the firearm will not fire should the trigger be pulled when the firearm is in a ''''half-safe'''' condition and then subsequently placed in an apparent cocked and ready condition. An indicating lever is mounted upon the trigger mechanism for pivoting movement in response to displacements of the cam plate member. A legend associated with the indicating lever is imprinted on the firearm to indicate whether the firearm is cocked and ready, cocked and safe, or fired.
Inventors
- 👤 R Baker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:18
CPC Classifications
F; F41; F41A; F41A3/00; F41A3/02; F41A3/10; F41A17/00; F41A17/56; F41C; F41C7/00; F41C7/06
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
290 words
In a firearm, the combination comprising: a receiver having a passage therein; a barrel mounted adjacent the receiver and having a chamber for receiving a cartridge; a breechblock mounted in the passage for movement between retracted and battery positions, the breechblock covering the chamber to retain the cartridge therein in the battery position; a striker mounted in the breechblock for movement between cocked and firing positions, the striker being adapted to fire the cartridge in the firing position when the breechblock is in the battery position; a sear movably mounted in the receiver to engage and retain the striker in the cocked position; a trigger, having a searing surface thereupon for engaging the sear, mounted for movement in the receiver between depressed and normal positions for engaging the sear in the normal position to retain the striker in the cocked position, the trigger being releasable from the sear by movement to the depressed position to permit movement of the striker from the cocked position to the firing position; a projection mounted upon the sear; and a cam member, having first and second surfaces defining an apex therebetween, mounted for movement in the receiver betwEen safety and final positions such that the first surface contacts the projection in the safety position to maintain the sear in engagement with the striker irrespective of trigger movement, the searing surface is spaced from the sear when the projection contacts the apex to permit return of the trigger from the depressed position to the normal position, and the projection rides over the first surface to the second surface when the cam member is displaced from the safety position to an intermediate position in which depression of the trigger disengages the searing surface from the sear.
Claim 2
Dependent Claim
290 words
In a firearm, the combination comprising: a receiver having a passage therein; a barrel mounted adjacent the receiver and having a chamber for receiving a cartridge; a breechblock mounted in the passage for movement between retracted and battery positions, the breechblock covering the chamber to retain the cartridge therein in the battery position; a striker mounted in the breechblock for movement between cocked and firing positions, the striker being adapted to fire the cartridge in the firing position when the breechblock is in the battery position; a sear movably mounted in the receiver to engage and retain the striker in the cocked position; a trigger, having a searing surface thereupon for engaging the sear, mounted for movement in the receiver between depressed and normal positions for engaging the sear in the normal position to retain the striker in the cocked position, the trigger being releasable from the sear by movement to the depressed position to permit movement of the striker from the cocked position to the firing position; a projection mounted upon the sear; and a cam member, having first and second surfaces defining an apex therebetween, mounted for movement in the receiver betwEen safety and final positions such that the first surface contacts the projection in the safety position to maintain the sear in engagement with the striker irrespective of trigger movement, the searing surface is spaced from the sear when the projection contacts the apex to permit return of the trigger from the depressed position to the normal position, and the projection rides over the first surface to the second surface when the cam member is displaced from the safety position to an intermediate position in which depression of the trigger disengages the searing surface from the sear.
Claim 3
Dependent Claim
19 words
The combination of claim 1, wherein the projection comprises: a roller mounted for rotation with respect to the sear.
Claim 4
Dependent Claim
124 words
The combination of claim 1, wherein the breechblock is mounted for upward and downward movement with respect to the receiver, and wherein the sear, the trigger and the cam member are mounted upon the breechblock for movement therewith and the striker is moved from the firing position to the cocked position by downward movement of the breechblock, and wherein the cam member comprises: a tip adapted to contact the receiver during downward movement of the breechblock from the battery position to the retracted position when the cam member is in the final position such that the cam member is displaced from the final position to the safety position, whereby the firearm cannot be accidentally fired upon returning the breechblock upwardly to the battery position.
Claim 5
Dependent Claim
16 words
The combination of claim 1, further including: menas to indicate the position of the cam member.
Claim 6
Dependent Claim
75 words
The combination of claim 4, wherein the indicating means comprises: a lever pivotally mounted upon the firearm and operatively connected to the cam member so as to be rotated by the movement thereof, and so as to be capable of moving the cam member between the safety and intermediate positions; and a legend imprinted upon the firearm adjacent the lever to indicate the cocked and safe, cocked and ready, and fired condition of the firearm.
Claim 7
Dependent Claim
89 words
The combination of claim 5, wherein the legend comprises the successive letters C, S, F, and R, and wherein the lever is of a width sufficient to cover two adjacent letters, and wherein the lever covers the letters F and R when the cam member occupies the safety position, covers the letters S and F when the cam member occupies the intermediate position, and covers the letters C and S when the cam member occupies the final position, and whereby the exposed letters indicate the condition of the firearm.
Claim 8
Dependent Claim
99 words
The combination of claim 2, wherein the cam member is mounted for pivoting movement, and wherein the first and second surfaces define an obtuse angle and are arranged with respect to the roller such that contact of the roller with the first surface urges pivoting movement of the cam member in one direction, and contact of the roller with the second surface urges pivoting movement of the cam member in the other direction, and wherein there is further provided: means to limit the pivoting movement of the cam member urged by contact between the roller and the first surface.
Claim 9
Dependent Claim
64 words
The combination of claim 7, wherein there is further provided: spring means to bias the cam member in the first mentioned direction for urging the second surface into contact with the roller to thereby eliminate play therebetween, and to pivot the cam member from the final position to the safety position during movement of the breechblock from the battery position to the retracted position.
Claim 10
Dependent Claim
134 words
In a firearm having a chamber for receiving a cartridge, the combination comprising: means to move between cocked and firing positions to fire the cartridge; sear means to retain the firing means in the cocked position by engagement therewith; trigger means to maintain the sear means in engagement with the firing means and to release the sear means to permit the firing means to move from the cocked position to the firing position; safetY means positionable to prevent and to permit release of the sear means by the trigger means when the firing means is in the cocked position; and indicating means operatively connected to the safety means to indicate the release permitting position of the safety means, the firing position of the firing means, and the release preventing position of the safety means.
Claim 11
Dependent Claim
134 words
In a firearm having a chamber for receiving a cartridge, the combination comprising: means to move between cocked and firing positions to fire the cartridge; sear means to retain the firing means in the cocked position by engagement therewith; trigger means to maintain the sear means in engagement with the firing means and to release the sear means to permit the firing means to move from the cocked position to the firing position; safetY means positionable to prevent and to permit release of the sear means by the trigger means when the firing means is in the cocked position; and indicating means operatively connected to the safety means to indicate the release permitting position of the safety means, the firing position of the firing means, and the release preventing position of the safety means.
Claim 12
Dependent Claim
159 words
In a firearm having a receiver, the combination comprising: means to move between cocked and firing positions to fire a cartridge from the firearm; trigger means to retain the firing means in the cocked position, and to release the firing means for movemment from the cocked position to the firing position; cocking means to move the firing means from the firing position to the cocked position; safety means responsive to operation of the cocking means to move into a position in which release of the firing means by the trigger means is prevented; spring means to automatically position the safety means in the release preventing position during movement of the firing means from the firing position to the cocked position; and means responsive to operation of the cocking means to contact a surface in the receiver for automatically positioning the safety means in the release preventing position in the event the spring means fails to move the safety means.
Claim 13
Dependent Claim
159 words
In a firearm having a receiver, the combination comprising: means to move between cocked and firing positions to fire a cartridge from the firearm; trigger means to retain the firing means in the cocked position, and to release the firing means for movemment from the cocked position to the firing position; cocking means to move the firing means from the firing position to the cocked position; safety means responsive to operation of the cocking means to move into a position in which release of the firing means by the trigger means is prevented; spring means to automatically position the safety means in the release preventing position during movement of the firing means from the firing position to the cocked position; and means responsive to operation of the cocking means to contact a surface in the receiver for automatically positioning the safety means in the release preventing position in the event the spring means fails to move the safety means.
Claim 14
Dependent Claim
179 words
In a firearm having a chamber for receiving a cartridge, the combination comprising: striker means to move between cocked and firing positions to fire the cartridge; sear means to move between an engaged position in which the striker means is retained in the cocked position and a disengaged position in which the striker means is in the firing position; trigger means to maintain the sear means in the engaged position and to release the sear means to permit the striker means to move from the cocked position to the firing position; safety means to move between a first position in which release of the sear means by the trigger means is prevented and a second position in which release of the sear means by the trigger means is permitted; means responsive to movements of the sear means to move the safety means from the second position to a third position during movement of the striker means from the cocked position to the firing position; and lever means to manually move the safety means between the first and second positions.
Claim 15
Dependent Claim
179 words
In a firearm having a chamber for receiving a cartridge, the combination comprising: striker means to move between cocked and firing positions to fire the cartridge; sear means to move between an engaged position in which the striker means is retained in the cocked position and a disengaged position in which the striker means is in the firing position; trigger means to maintain the sear means in the engaged position and to release the sear means to permit the striker means to move from the cocked position to the firing position; safety means to move between a first position in which release of the sear means by the trigger means is prevented and a second position in which release of the sear means by the trigger means is permitted; means responsive to movements of the sear means to move the safety means from the second position to a third position during movement of the striker means from the cocked position to the firing position; and lever means to manually move the safety means between the first and second positions.
Claim 16
Dependent Claim
53 words
The combination of claim 11, further including: cocking means to move the striker means from the firing position to the cocked position; and spring means to automatically move the safety means from the third position to the first position when the striker means is moved from the firing position to the cocked position.
Claim 17
Dependent Claim
52 words
The combination of claim 12, wherein the safety means comprises: means responsive to operation of the cocking means to contact a surface in the firearm and to automatically move the safety means from the third position to the first position in the event the spring means fails to move the safety means.
Claim 18
Dependent Claim
68 words
The combination of claim 11, wherein the lever means comprises: a lever pivotally mounted upon the firearm such that it may be rotated by the safety means and be capable of positioning the safety means between the first and second positions; and wherein there is further provided: a legend imprinted upon the firearm adjacent the lever to indicate the first, second and third positions of the safety means.
Claim 19
Dependent Claim
93 words
The combination of claim 14, wherein the legend comprises the successive letters C, S, F, and R, and wherein the lever is of a width sufficient to cover two adjacent letters, and wherein the lever covers the letters F and K when the safety means is in the first position, covers the letters S and F when the safety means is in the second position, and covers the letters C and S when the firing means is in the fIring position, and whereby the exposed letters will indicate the condition of the 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) | 1976-07-23 | 1977-01-22 | 1977-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-23 | 1981-01-22 | 1981-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-23 | 1985-01-22 | 1985-07-24 | $7700.00 | Window Closed / Lapsed |