Patent ID: 7213359

Claim:
Sear mechanism for firearms comprising a sear box ( 12 ), a trigger ( 15 ) mounted in said sear box ( 12 ) on a rotation pin ( 18 ) which is acted upon by an elastic return element ( 25 ), and having a hammer ( 16 ) mounted in said sear box ( 12 ) on a pin of the hammer ( 31 ) and upon which acts an elastic thrust element ( 33 ), said hammer ( 16 ) being equipped with a mounting tooth ( 40 ) for engaging sear tooth ( 41 ), and a breechblock carrier ( 13 ) carrying a firing pin ( 14 ), and comprising a sear device ( 17 ) controlled by said trigger ( 15 ) which said hammer ( 16 ), motion between a cocking position A in engagement with said sear tooth ( 41 ) and a striking position B against said firing pin ( 14 ), wherein said sear tooth ( 41 ) is fixed and integral with said sear box ( 12 ), said hammer pin ( 31 ), is in engagement with a slot ( 32 ) of said sear box ( 12 ) said sear device ( 17 ) comprises at one end an engagement element ( 43 ) mounted on said hammer pin ( 31 ) said pin being adapted to cause said hammer pin to advance in said slot ( 32 ), said motion between said cocking position A and said striking position B of said hammer ( 16 ) comprising an initial translation step and a subsequent rotary step under the action of said elastic thrust element ( 33 ), said sear device ( 17 ) being connected at an opposite end thereof to said trigger ( 15 ), and including an additional safety device which comprises a interposing element ( 60 ) which is slidably mounted below the firing pin latch ( 43 ) in a housing having a first inclined plane element ( 63 ) and a second inclined plane element ( 63 a ) which are arranged between lateral walls ( 62 ) to form a seat ( 61 ) which holds interposing element ( 60 ) in a first position where it does not interfere with the operation of the firing pin latch ( 43 ) but allows said element ( 60 ) to move into a position where it prevents the pin latch ( 43 ) from moving downwardly to disengage hammer ( 16 ).