Patent ID: 8549782
Filing Date: 2013-10-08
Classification: F41A,F41C,F41G

Abstract:
1. A firearm, comprising: a frame; a barrel having a firing axis, the barrel being attached to said frame; a cylinder pivotally attached within an opening in said frame and positioned between a rearward portion of said barrel and a breech face surface of said frame, said cylinder having a plurality of firing chambers sized to receive cartridges, each said firing chamber being indexable in turn to a position in alignment with the firing axis; and a firing mechanism, said firing mechanism including a trigger attached to the frame to actuate the firing mechanism, an indexing mechanism for indexing the firing chambers during actuation of the firing mechanism, and a hammer pivotally attached to said frame; wherein said indexing mechanism includes a frame-housed rotatable shaft having a longitudinal axis oriented parallel to said firing axis, said shaft being rotatable about said longitudinal axis, said shaft having a keyed head for engaging a complimentary shaped socket on a rear of said cylinder for rotating said cylinder during actuation of said firing mechanism wherein said rotatable shaft and keyed head are linearly moveable from a first position in which said head is positioned behind said breech face surface and interior to said frame and out of engagement with said socket.