Explosive actuated battering ram

An impact device for delivering a large impact force against an impact surface, comprising:

• an impact delivery head having a first end with an impact edge for engaging against the impact surface;
• an impact head housing for surrounding said impact head and guiding the motion of said head into and out of said impact head housing, said impact head housing having an open end for allowing said head to extend out of said impact head housing and subsequently impact against the impact surface;
• a linking member having a first end rigidly attached to a second end of said impact head and a second end acting as a piston;
• an elongated housing for guiding reciprocal movement of said linking member such that said impact head may move between a first position wherein said head is fully retracted into said impact head housing and a second position wherein said head extends out of said impact head housing;
• a means for explosively moving said piston end of said linking member to allow said impact head to move from said first position to said second position;
• wherein said explosive movement of said piston end of said linking member allows said impact head to move to said second position at a high velocity in order to deliver the large impact force against the impact surface;
• and
• a means for absorbing energy of said impact head during said explosive movement of said piston end of said linking member, once said impact head moves to said second position, said energy absorbing means including:
• a tube for surrounding a portion of said linking member, said tube having an opening through which said linking member may move and a piston abutment surface for allowing said piston end of said linking member to abut against said tube;
• a predetermined volume of fluid for retarding the motion of said tube and said linking member once said impact head moves to said second position.

An impact device for delivering an impact force against a surface, the impact device comprising:

• a cylinder;
• a piston, having a piston head side and a link side, slidably disposed within the cylinder, the piston being movable from a first position within the cylinder to a second position within the cylinder;
• an impact head connected to the link side of the piston;
• a means for causing high speed movement of the piston from the first position within the cylinder, to the second position within the cylinder;
• a means for absorbing energy of the piston during movement of the piston within the cylinder, the means for absorbing energy including:
• (a) a means for confining a fluid;
• (b) a fluid disposed in the means for confining a fluid;
• and
• (c) a means for forcing the fluid in the confining means through an aperture which is disposed in fluid flow communication with the confining means.

An impact device for delivering an impact force against a surface, the impact device comprising:

• a cylinder;
• a piston, having a piston head side and a link side, slidably disposed within the cylinder, the piston being movable from a first position within the cylinder to second position within the cylinder;
• an impact head connected to the link side of the piston;
• a means for causing high speed movement of the piston from the first position within the cylinder, to the second position within the cylinder;
• and
• a means for absorbing energy of the piston, wherein the means for absorbing energy includes:
• a fluid;
• and
• a brake member disposed within the fluid, wherein movement of the piston causes the brake member to move through the fluid.

An impact device for delivering an impact force against a surface, the impact device comprising:

• a cylinder having first and second ends;
• a piston, having a piston head side and a link side, slidably disposed within the cylinder, the piston being movable from a first position within the cylinder to a second position within the cylinder;
• an impact head connected to the link side of the piston;
• a means for causing high speed movement of the piston from the first position within the cylinder, to the second position within the cylinder, including a first chamber connected to one end of the cylinder, wherein the piston head side of the piston faces towards the firing chamber, the firing chamber having a diameter sized to slidably receive a standard shotgun shell;
• and
• braking means for braking the piston during movement of the piston within the cylinder, the braking means including:
• (a) a chamber;
• (b) a fluid disposed within the chamber;
• and
• (c) a means associated with the movement of the piston to move therewith to impose a compression force on the fluid within the chamber.