Gun trigger

• US 4,908,970 A
• Filed: 06/21/1988
• Issued: 03/20/1990
• Est. Priority Date: 06/21/1988
• Status: Expired due to Fees

• Current Assignee: Dennis L. Bell
• Original Assignee: Dennis L. Bell
• Inventors: Bell, Dennis L.
• Primary Examiner(s): NOT, DEFINED
• Assistant Examiner(s): NOT, DEFINED
• Application Number:
  US07/209,364
• Time in Patent Office: 637 Days
• Field of Search: 42/42.01, 42/65, 42/69.01, 42/69.02, 42/69.03, 42/70.05
• US Class Current: 42/69.02
• CPC Class Codes: F41A 19/12 Sears; Sear mountings

Abstract

An improved gun trigger unit for a rifle or the like. The unit uses at least two spring biased moving members positioned one above the other. The members are pivotably mounted in relation to each other and pivot from a first engaged position to a second disengaged position. At least one of the members has rotatably mounted thereon a bearing in engagement with the other of the moving members. A movement of the trigger lever will pivot one of the members to activate the other of the members by the bearing rolling from a first engaged position to a second disengaged position thereby releasing the rifle bolt to fire the rifle.

Claims

1. In a rifle of the type having a trigger lever mounted below a rifle bolt and positioned in a gunstock, the trigger unit having a plurality of spring biased moving parts, the improvement comprising:

a. the trigger unit being positioned in a housing and having at least two spring biased moving members, at least two of the springs from the spring bias engaging the housing and the respective moving member;

(1) one of the moving members being positioned above the other of the moving members, the members being pivotably mounted in relation to each other and being spring biased from the housing to pivot from a first engaged position to a second disengaged position;

(2) at least one of the moving members having rotatably mounted thereon a bearing for engagement with the other of the moving members; and

b. the rotatably mounted bearing being in juxtaposition to one of the members and riding in contact with the other of the members so that a movement of the trigger lever will pivot one of the members to activate the other of the members by the bearing rolling from a first engaged position to a second disengaged position thereby releasing the rifle bolt to fire the rifle.

2. The improvement as defined in claim 1 further comprising the trigger unit having at least three spring biased moving members, with at least two of the springs of the spring bias engaging the housing and at least one of the springs of the spring bias engaging one of the moving members.

3. The improvement as defined in claim 1 further comprising one of the moving members being a sear and the other of the moving members being a trigger yoke.

4. The improvement as defined in claim 3 wherein the bearing is rotatably mounted on the trigger yoke.

5. The improvement as defined in claim 1 wherein the trigger unit has pivotably mounted thereon a trigger safety lever for engagement between both of the moving members to prevent motion of the members by blocking movement of at least one of the members thereof, thereby preventing the firing of the rifle.

6. The improvement as defined in claim 5 wherein the trigger safety has formed thereon a sear engagement nose and the nose is positioned between the two spring biased moving members thereby preventing motion of the members.

7. In a rifle of the type having a trigger unit mounted below a rifle bolt and positioned in a gun stock, the trigger unit having a plurality of moving parts which are spring biased, the improvement comprising:

a. the trigger unit being positioned in a housing and having three spring biased moving members;

(1) the first moving member being a pivotably mounted trigger yoke having formed thereon a trigger lever and a pair of bifurcated arms;

(2) the second moving member being a pivotably mounted trigger toggle having a sear bearing rotatably mounted thereon, the trigger toggle being pivotably mounted on the trigger yoke;

(3) the third moving member being a sear, pivotably mounted to the housing and being positioned above the trigger yoke and trigger toggle with the sear bearing engaging the sear and riding on the sear between a first engaged position and a second disengaged position; and

b. the rotating sear bearing riding on the sear between a first engaged position to the second disengaged position permitting a reduced trigger lever travel and minimizing trigger parts wear and tear.

8. The improvement as defined in claim 7 further comprising the sear having formed thereon a generally horizontal bearing surface on the underside of the sear and generally vertical surface joining the generally horizontal bearing surface at a point for engagement with the sear bearing when the trigger is squeezed.

9. The improvement as defined in claim 7 further comprising;

c. a trigger safety being mounted on the housing to prevent the trigger lever from being moved.

10. The improvement as defined in claim 7 further comprising the trigger safety being pivotably mounted on the housing and having a sear engagement nose formed thereon for positioning between the trigger yoke and the sear to prevent motion thereof thereby preventing firing of the rifle.

11. A trigger unit for use in a rifle, having a gun stock or the like and designed to trigger a bolt having a cocking piece sear notch, the bolt serving to detonate explosive ammunition, comprising:

a. a generally hollow housing, for positioning and mounting in the gun stock below the bolt;

b. a trigger yoke, pivotably mounted in the hollow housing, the yoke having formed thereon;

(1) a trigger lever;

(2) a pair of bifurcated arms having an apex area, one of the arms having formed thereon an extended trigger yoke finger;

c. a trigger toggle having opposite ends and being pivotably mounted on one end thereof to the trigger yoke at the apex area, the trigger toggle having a sear bearing, rotatably mounted thereon on the other end thereof, the trigger toggle being positioned generally vertical with the sear bearing extending upwardly;

d. a sear, pivotably mounted in the hollow housing and above the trigger yoke, the sear having formed thereon;

(1) a sear nose for engagement with the cocking piece sear notch in the bolt;

(2) an extended sear finger for engagement with the trigger yoke finger whenever the trigger lever is squeezed;

(3) a generally horizontal bearing surface on the underside of the sear for engagement with the sear bearing when the trigger has not been squeezed;

(4) a generally vertical bearing surface joining the generally horizontal bearing surface at a point for engagement with the sear bearing when the trigger is squeezed, the sear bearing being positioned at the point joining the two bearing surfaces and riding between the two bearing surfaces as the trigger lever is squeezed,

(5) a plurality of spring bias members positioned inside the housing and engaging the yoke, the toggle and the sear to return the yoke, toggle and sear to their engaged position; and

(6) the movement of the trigger lever in one direction causing the bifurcated arms to move in an opposite direction, one of the arms striking the toggle and moving the toggle and the attached sear bearing in the same opposite direction, the sear bearing then rolling off of the generally horizontal bearing surface onto the joining generally vertical bearing surface which permits the sear to rotate downwardly thereby moving the sear nose out of engagement with the cocking piece sear notch to allow the bolt to detonate the explosive ammunition, the downward motion of the sear being stopped as the extended sear finger engages the extended trigger yoke finger.

12. The trigger unit as defined in claim 11 further comprising:

e. a trigger safety being mounted on the housing to prevent the trigger lever from being moved.

13. The trigger unit as defined in claim 12 further comprising the trigger safety being pivotably mounted on the housing and having a sear engagement nose formed thereon for engagement with the trigger yoke and the sear to prevent motion thereof thereby preventing firing of the rifle.

14. In a rifle of the type having a trigger lever mounted below a rifle bolt and positioned in a gunstock, the trigger unit having a plurality of spring biased moving parts, the improvement comprising:

a. the trigger unit being positioned in a housing and having at least two spring biased moving members, one of the moving members being a sear and the other of the moving members being a trigger yoke;

(1) one of the moving members being positioned above the other of the moving members, the members being pivotably mounted in relation to each other and being spring biased to pivot from a first engaged position to a second disengaged position;

(2) the trigger yoke having rotatably mounted thereon a bearing for engagement with the other of the moving members;

(3) the trigger yoke has mounted thereon a trigger toggle with the bearing being mounted on the trigger toggle and;

b. the rotatably mounted bearing being in juxtaposition to the sear and riding in contact with the sear so that a movement of the trigger lever will pivot the trigger yoke to activate the sear by the bearing rolling from a first engaged position to a second disengaged position thereby releasing the rifle bolt to fire the rifle.

15. In a rifle of the type having a trigger lever mounted below a rifle bolt and positioned in a gunstock, the trigger unit having a plurality of spring biased moving parts, the improvement comprising:

a. the trigger unit being positioned in a housing and having at least two spring biased moving members;

(1) one of the moving members being positioned above the other of the moving members, the members being pivotably mounted in relation to each other and being spring biased to pivot from a first engaged position to a second disengaged position;

(2) at least two of the moving members having rotatably mounted thereon a bearing for engagement with the other of the moving members; and

b. the rotatably mounted bearings being in juxtaposition to each other and riding in contact with each other so that a movement of the trigger lever will pivot one of the members to activate the other of the members by one of the bearings rolling from a first engaged position to a second disengaged position thereby releasing the rifle bolt to fire the rifle.