Hammer drive tool
AssigneeBrosius Bros., Inc.
InventorRalph Brosius
Life of this patent
Estimating the term…
Abstract
A hammer drive, powder actuated tool having a main barrel housing, fastener drive and guide means telescopically slidable in one end of the housing and having a muzzle end for orienting a fastener and a breech end for orienting a fastener-driving powder charge, the other end of said main housing having first anvil means thereon, second anvil means including firing pin means, spring means of substantial force biasing said first and second anvil means apart, and movable safety means disposed between the breech end of said fastener drive and guide means and said firing pin means preventing unrestricted axial movement therebetween and contact between said firing pin and powder charge.
Claims14
A hammer drive, powder actuated tool having a main housing, relatively movable fastener drive and guide means telescopically slidable in one end of the housing and having a muzzle end for orienting a fastener and a breech end for orienting a fastener-driving powder charge, first anvil means secured to the other end of said main housing, second anvil means movably positioned in said main housing adjacent to said first anvil means and including firing pin means, spring means of substantial force biasing said first and second anvil means axially apart, said fastener drive and guide means being axially movable toward said firing pin means preparatory to firing engagement of said firing pin means with said powder charge, and movable safety means disposed between the breech end of said fastener drive and guide means and said firing pin means for restricting relative axial movement therebetween and contact between said firing pin means and powder charge.
In a hammer drive, powder actuated tool having a main housing with a muzzle end and an impact end, fastener guide means having a muzzle end for orienting a fastener and a breech end for orienting a fastener-driving powder charge and being axially slidable in said housing between extended breech loading and retracted ready-to-fire positions, the impact end of said main housing having a primary anvil member secured thereto;
- the improvement comprising floating firing pin means disposed between said primary anvil member and said breech end of said fastener guide means, said floating firing pin means comprising a secondary anvil member adjacent to the primary anvil member and spring means biasing said anvil members apart, a firing pin on said secondary anvil and being axially aligned with the powder charge on the breech end of said fastener guide means, said primary anvil member and said main housing being driven relative to said fastener guide means in response to a substantial striking force on said primary anvil member to thereby move said primary and secondary anvil members against the biasing action of said spring means and said firing pin into firing contact with the powder charge.
Dependencies are inferred from the claim text.