Arnold L Kinne

US Patent:

48319015, May 23, 1989

Filed:

May 23, 1988

Appl. No.:

7/201255

Inventors:

Arnold L. Kinne - Stirling City CA

International Classification:

B25D 100

US Classification:

81 25

Abstract:

A hammer having a spring to augment the magnitude of strike force through application of a sliding weight free-moving as a projectile in a hollow shaft inside the hammer head. The hammer gains impact force through the use of a double impact hammer head with the spring propelling a portion of the inner hammer head mass to a greater velocity than the surrounding position of the head.