Trigger mechanism for a crossbow

A trigger assembly for a crossbow, the trigger assembly comprising:

• (a) a string retainer moveable between a firing retainer position and a non-firing retainer position, wherein the retainer is (i) arranged in the non-firing retainer position to retain a drawn bowstring of the crossbow and (ii) arranged in the firing retainer position to release the bowstring;
• and
• (b) a trigger mechanism moveable between a firing trigger arrangement and a non-firing trigger arrangement, wherein the trigger mechanism is (i) arranged in the non-firing trigger arrangement to hold the retainer in the non-firing retainer position and (ii) arranged in the firing trigger arrangement to enable the retainer to move to the retainer firing position,
• wherein:
• (c) the trigger mechanism includes first and second rotating sears;
• (d) the first sear is (i) coupled to a trigger of the crossbow, (ii) arranged in the non-firing trigger arrangement to block rotation of the second sear, and (iii) arranged in the firing trigger arrangement to allow rotation of the second sear to the firing trigger arrangement;
• (e) the second sear is (i) arranged in the non-firing trigger arrangement to block movement of the retainer from the non-firing retainer position and (ii) arranged in the firing trigger arrangement to allow movement of the retainer to the firing retainer position.