Trigger device

Abstract

A trigger device for activating a firing mechanism, the trigger device comprising a housing, a trigger pivotally mounted on the housing via a trigger pivot pin, a sear arm comprising a first sear surface, a ticker extending generally from the trigger to the sear arm, the ticker pivotable about a ticker pivot pin, the ticker comprising spaced apart flanges, each of which comprises an aperture defining at least a first contact surface, and a captured roller positioned at least partially within the apertures, wherein in a captured position the first sear surface and the first contact surfaces engage the captured roller and in a released position the first contact surfaces disengage from the captured roller to allow the captured roller to move within the aperture.

What is claimed is: 
     
         1 . A trigger device for activating a firing mechanism, the trigger device comprising:
 a housing;   a trigger pivotally mounted on the housing via a trigger pivot pin;   a trigger biasing member configured to bias the trigger in a ready position;   a sear arm comprising a first sear surface;   a ticker extending generally from the trigger to the sear arm and rotatable about a ticker pivot pin, the ticker comprising spaced apart flanges defining a slot, the slot receiving a portion of the sear arm including the first sear surface, each flange comprising an aperture defining a first contact surface; and   a captured roller positioned at least partially within the apertures and extending through the slot, the captured roller configured to selectively engage the first sear surface and the first contact surfaces.   
     
     
         2 . The trigger device of  claim 1  wherein the trigger comprises a trigger arm positioned above the trigger pivot pin. 
     
     
         3 . The trigger device of  claim 1  or  2  wherein the captured roller is configured to rotate and translate within the apertures when disengaged with the first contact surface. 
     
     
         4 . The trigger device of any one of  claims 1  to  3  wherein the trigger is configured to hold a portion of the ticker. 
     
     
         5 . The trigger device of  claim 4  further comprising a biasing member biasing the ticker in a same direction as a direction of travel of the trigger from a ready position to a fire position. 
     
     
         6 . The trigger device of any one of  claims 1  to  4  wherein the trigger is pivotable about the trigger pivot pint between a ready position, in which the trigger arm is not in contact with the housing, and a fire position, in which the trigger arm is in contact with the housing. 
     
     
         7 . The trigger device of  claim 6  wherein the ticker is pivotable about the ticker pivot pin between a first position, in which the trigger is in contact with the ticker, and a second position, in which the trigger is not in contact with the ticker, the ticker moveable from the first position to the second position as the trigger moves from the ready position towards the fire position. 
     
     
         8 . The trigger device of  claim 7  wherein the sear arm is moveable between a captured position, in which the sear arm is held by the engagement of the first sear surface with the captured roller, and a released position in which the first sear surface is disengaged with the captured roller. 
     
     
         9 . The trigger device of  claim 8  wherein the captured roller translates within the apertures as the sear arm moves from the captured position to the released position. 
     
     
         10 . The trigger device of any one of  claims 1  to  9  wherein the ticker is rotatably coupled to the trigger. 
     
     
         11 . An adjustment mechanism comprising:
 a feedback member comprising a plurality of wedge shaped projections on a first surface thereof;   a threaded wedge screw threadably coupled to a housing, the wedge screw comprising a first end shaped to be received between neighbouring wedge shaped projections; and   a spring connected at a first end to the feedback member on a surface opposite the first surface, the spring configured to be compressed or decompressed based on a direction of rotation of the threaded wedge screw;   wherein the feedback mechanism provides feedback to a user each time the threaded wedge screw is repositioned between adjacent neighbouring wedge shaped projections.   
     
     
         12 . A trigger device for activating a firing mechanism, the trigger device comprising:
 a housing;   a trigger pivotally mounted on the housing via a trigger pivot pin;   a sear arm comprising a first sear surface;   a ticker extending generally from the trigger to the sear arm, the ticker pivotable about a ticker pivot pin, the ticker comprising spaced apart flanges, each of which comprises an aperture defining at least a first contact surface; and   a captured roller positioned at least partially within the apertures,   wherein in a captured position the first sear surface and the first contact surfaces engage the captured roller and in a released position the first contact surfaces disengage from the captured roller to allow the captured roller to move within the aperture.   
     
     
         13 . The trigger device of  claim 12  wherein the sear arm moves from the captured position to the released position upon movement of the trigger from a ready position to a fire position. 
     
     
         14 . The trigger device of  claim 13  wherein the ticker is pivotable about the ticket pivot pin between a first position, in which the trigger is in contact with the ticker, and a second position, in which the trigger is not in contact with the ticker, the ticker moveable from the first position to the second position upon movement of the trigger from the ready position to the fire position. 
     
     
         15 . The trigger device of any one of  claims 12  to  14  wherein the captured roller is translatable within the apertures due to relative movement between the ticker and the sear arm. 
     
     
         16 . The trigger device of any one of  claims 12  to  15  further comprising a trigger biasing member biasing the trigger in a direction towards the sear. 
     
     
         17 . The trigger device of  claim 16  wherein the trigger biasing member is adjustable. 
     
     
         18 . The trigger device of any one of  claims 12  to  17  further comprising a sear biasing member biasing the sear in a direction away from the trigger. 
     
     
         19 . The trigger device of any one of  claims 12  to  18  further comprising a ticker biasing member biasing the ticker in a same direction as a direction of travel of the trigger from the ready position to the fire position. 
     
     
         20 . The trigger device of any one of  claims 12  to  19  further comprising a trigger arm engageable by a user to move the trigger from the ready position to the fire position thereby activating the firing mechanism. 
     
     
         21 . The trigger device of any one of  claims 12  to  20  wherein the movement of the captured roller within the apertures is translation and rotation.