Rotary disconnector
View Patent ↗A pistol has a disconnector for disconnecting a trigger bar from a sear to allow the sear to reset and engage and hold a hammer in a cocked position. Motion of a slide causes rotation of the disconnector through interaction between a cam surface on the slide and a cam follower on the disconnector. A contact surface on the disconnector engages the trigger bar upon rotation of the disconnector and moves the trigger bar out of engagement with the sear. A biasing spring resets the sear into engagement with the hammer which is rotated into the cocked position by motion of the slide.
1. A disconnector for a pistol, said pistol having a frame, a slide movably mounted on said frame, a cam surface being positioned on said slide, a sear rotatably mounted on said frame, and a trigger bar movably mounted on said frame, a portion of said trigger bar being engageable with said sear, said disconnector comprising:
a body mounted on said frame for rotation about an axis, said body having a cam follower engageable with said cam surface and a contact surface engageable with said trigger bar; wherein
motion of said slide relatively to said frame causes said cam surface to engage said cam follower, thereby rotating said body about said axis, said contact surface thereby engaging said trigger bar and moving said portion thereof out of engagement with said sear.
2. The disconnector according to claim 1 , wherein said cam follower is positioned on a first side of said axis and said contact surface is positioned on a second side of said axis opposite to said first side.
3. The disconnector according to claim 1 , wherein said cam follower comprises a lobe projecting from said body in a plane substantially perpendicular to said axis.
4. The disconnector according to claim 1 , wherein said cam follower defines a first plane and said contact surface is offset therefrom in a direction substantially parallel to said axis.
5. The disconnector according to claim 1 , wherein said cam follower is positioned at a first end of said body and said contact surface is positioned at a second end of said body opposite to said first end.
6. The disconnector according to claim 1 , wherein said body has first and second sides arranged opposite to one another, both said cam follower and said contact surface being positioned on a same one of said sides.
7. The disconnector according to claim 1 , wherein said axis is oriented perpendicularly to a line of motion of said slide.
8. A pistol, said pistol comprising:
a frame;
a slide movably mounted on said frame;
a cam surface positioned on said slide;
a sear rotatably mounted on said frame;
a trigger bar movably mounted on said frame, a portion of said trigger bar being engageable with said sear;
a disconnector body mounted on said frame for rotation about an axis, said disconnector body having a cam follower engageable with said cam surface and a contact surface engageable with said trigger bar; wherein
motion of said slide relatively to said frame causes said cam surface to engage said cam follower, thereby rotating said disconnector body about said axis, said contact surface thereby engaging said trigger bar and moving said portion thereof out of engagement with said sear.
9. The pistol according to claim 8 , wherein said cam follower is positioned on a first side of said axis and said contact surface is positioned on a second side of said axis opposite to said first side.
10. The pistol according to claim 8 , wherein said cam follower comprises a lobe projecting from said disconnector body in a plane perpendicular to said axis.
11. The pistol according to claim 8 , wherein said cam follower defines a first plane and said contact surface is offset therefrom in a direction substantially parallel to said axis.
12. The pistol according to claim 8 , wherein said cam follower is positioned at a first end of said disconnector body and said contact surface is positioned at a second end of said disconnector body opposite to said first end.
13. The pistol according to claim 8 , wherein said disconnector body has first and second sides arranged opposite to one another, both said cam follower and said contact surface being positioned on a same one of said sides.
14. The pistol according to claim 8 , wherein:
said frame comprises first and second rails positioned on opposite sides thereof;
said slide comprises first and second sidewalls oppositely disposed from one another, said first and second sidewalls respectively engaging said first and second rails to permit sliding motion of said slide relatively to said frame, said cam surface being positioned on said first sidewall of said slide.
15. The pistol according to claim 14 , wherein said cam surface is angularly oriented with respect to said first rail.
16. The pistol according to claim 8 , wherein said axis is oriented perpendicularly to a line of motion of said slide relatively to said frame.
17. The pistol according to claim 8 , further comprising a spring acting on said trigger bar for biasing said trigger bar away from said frame.
18. The pistol according to claim 17 , wherein said spring comprises a leaf spring mounted on said trigger bar.
19. The pistol according to claim 8 , wherein said portion of said trigger bar engageable with said sear comprises an end of said trigger bar.
20. A method of resetting a sear into a ready position during operation of a pistol, said method comprising:
moving a slide;
engaging a cam surface on said slide with a cam follower on a rotatable body and thereby rotating said rotatable body;
engaging a contact surface on said rotatable body with a trigger bar engaged with said sear and thereby moving said trigger bar relatively to said sear and out of engagement therewith;
moving said sear into said ready position upon disengagement with said trigger bar.