Radial ball lock-up device
First Claim
Patent Images
1. A firearm having a lock-up mechanism comprising:
- a barrel;
a receiver portion attached to said barrel at a rear end of said barrel;
a stock attached to said receiver portion at a rear portion of said receiver portion; and
a lock-up mechanism including;
an inner lock sleeve;
an outer lock sleeve axially aligned with said inner lock sleeve;
a cam member axially aligned with said inner lock sleeve and said outer lock sleeve;
lock ball means for being disposed in a locking position between said inner lock sleeve and said outer lock sleeve, said lock ball means are releasable from said locking position by said cam member; and
biasing means for biasing said lock ball means from said locking position.
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Accused Products
Abstract
A lock-up device for a firearm which utilizes a ball and cam arrangement to interlock two members. The interlocked members include ball engagement surfaces which are curved so that a substantial portion of the ball surface is in contact with the engagement surfaces. The lock-up device disposed in a firearm absorbs inertia forces and utilizes the absorbed inertia force to cycle the firearm.
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Citations
25 Claims
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1. A firearm having a lock-up mechanism comprising:
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a barrel; a receiver portion attached to said barrel at a rear end of said barrel; a stock attached to said receiver portion at a rear portion of said receiver portion; and a lock-up mechanism including; an inner lock sleeve; an outer lock sleeve axially aligned with said inner lock sleeve; a cam member axially aligned with said inner lock sleeve and said outer lock sleeve; lock ball means for being disposed in a locking position between said inner lock sleeve and said outer lock sleeve, said lock ball means are releasable from said locking position by said cam member; and biasing means for biasing said lock ball means from said locking position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 9)
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8. A breech bolt lock-up mechanism, for use in a firearm, comprising;
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an inner lock sleeve; an outer lock sleeve axially aligned with said inner lock sleeve; a cam member axially aligned with said inner lock sleeve and said outer lock sleeve; lock ball means capable of being disposed in a locking position between said inner lock sleeve and said outer lock sleeve, said lock ball means being releasable from said locking position by said cam member; and biasing means for biasing said lock ball means from said locking position. - View Dependent Claims (10, 11, 12, 13)
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14. A firearm having a lock-up mechanism comprising:
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a barrel; a receiver portion attached to said barrel at a rear end of said barrel; a stock attached to said receiver portion at a rear portion of said receiver portion; and a lock-up mechanism including; an inner lock sleeve; an outer lock sleeve axially aligned with said inner lock sleeve; a cam member axially aligned with said inner lock sleeve and said outer lock sleeve; lock ball means for being disposed in a locking position between said inner lock sleeve and said outer lock sleeve; said lock ball means are releasable from said locking position by said cam member; wherein said lock ball means includes a plurality of lock balls with a predetermined radius; and said inner and outer lock sleeves each have a plurality of concave ball contact surfaces formed of a three-dimensional section of an inner-spherical surface with a curvature substantially equal to said predetermined radius of said lock balls. - View Dependent Claims (15, 16, 17, 18, 19)
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20. A firearm having a lock-up mechanism comprising:
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a barrel; a receiver portion attached to said barrel at a rear end of said barrel; a stock attached to said receiver portion at a rear portion of said receiver portion; and a lock-up mechanism including; an inner lock sleeve; an outer lock sleeve axially aligned with said inner lock sleeve; a cam member axially aligned with said inner lock sleeve and said outer lock sleeve; lock ball means for being disposed in a locking position between said inner lock sleeve and said outer lock sleeve; said lock ball means are releasable from said locking position by said cam member; and a cam spring connected between said inner lock sleeve and said cam member wherein said cam spring stores inertia energy when a projectile is discharged by said firearm and utilizes said inertia energy to unlock and cycle said firearm. - View Dependent Claims (21, 22)
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23. A firearm having a lock-up mechanism comprising:
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a barrel; a receiver portion attached to said barrel at a rear end of said barrel; a stock attached to said receiver portion at a rear portion of said receiver portion; and a lock-up mechanism including; an inner lock sleeve; an outer lock sleeve axially aligned with said inner lock sleeve; a cam member axially aligned with said inner lock sleeve and said outer lock sleeve; a lock ball means for being disposed in a locking position between said inner lock sleeve and said outer lock sleeve; said lock ball means are releasable from said locking position by said cam member; wherein said inner and outer lock sleeves are made of a ceramic. - View Dependent Claims (24)
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25. A breech bolt lock-up mechanism, for use in a firearm, comprising;
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an inner lock sleeve; an outer lock sleeve axially aligned with said inner lock sleeve; a cam member axially aligned with said inner lock sleeve and said outer lock sleeve; and lock ball means capable of being disposed in a locking position between said inner lock sleeve and said outer lock sleeve, said lock ball means being releasable from said locking position by said cam member, wherein said lock ball means includes a plurality of lock balls with a predetermined radius, and said inner and outer lock sleeves each have a plurality of concave ball contact surfaces formed of a three-dimensional section of an inner-spherical surface with a curvature substantially equal to said predetermined radius of said lock balls.
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Specification