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Multi-stage trigger mechanism for firearm

  • US 10,578,385 B2
  • Filed: 01/20/2017
  • Issued: 03/03/2020
  • Est. Priority Date: 04/17/2015
  • Status: Active Grant
First Claim
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1. A trigger assembly for cocking and releasing a firing mechanism of a firearm, the trigger assembly having a trigger and comprising:

  • a trigger housing having a front, back, top, and bottom, the trigger housing comprising two spaced side plate elements mountable below the firing mechanism and a trigger assembly body therebetween a portion of the two spaced vertical plate elements;

    a sear pivotally mounted between the plate elements and releasably engagable with a portion of the firing mechanism and moveable between a first position wherein the sear secures the firing mechanism in a cocked position and a second position wherein the sear permits the firing mechanism to be released;

    a sear block pivotally mounted between the plate elements at a sear block pivot and having a distal portion releasably engageable with a portion of the sear; and

    ,a trigger lever configured to engage a proximal portion of the sear block and having a distal portion that extends upwardly a predetermined distance less than the distal portion of the sear block, wherein the trigger lever is pivotally mounted between the plate elements adjacent the sear block at a trigger lever pivot which is spaced apart from the sear block pivot;

    wherein, in the cocked position, the trigger lever is out of contact with the sear block and wherein, actuation of the trigger causes the trigger lever to rotate about the trigger lever pivot so that the trigger lever contacts and operably engages the proximal portion of the sear block, causing the sear block to rotate about the sear block pivot and urging the distal portion of the sear block out of engagement with the sear, thereby allowing the sear and the trigger lever to move together from the first position to the second position;

    wherein, if the sear block rotates independently and out of engagement with the sear, the sear rotates and contacts the distal portion of the trigger lever.

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