Impact means for ripper

Claim 1

In an earth working apparatus having a support, a ripper defining a resiliently deflectible shank and a tooth at one end of the shank, and an impact member having an inner mounting portion and an outer impacting portion, the improvement comprising: pivot means for pivotally mounting the ripper shank to the support for pivoting about a single pivot axis; pivot means for pivotally mounting the impact member mounting portion to the support for pivoting about a single pivot axis with said impacting portion defining a contact surface engaging said shank at an inner portion of an undeflected condition of said shank and defining therewith an outwardly widening gap; and impact force means for urging the impact member outwardly of said inner portion toward said shank with said tooth engaging earth to be loosened to cause said shank to be deflected into progressively increased gap-closing facial engagement with said contact surface in transferring an impact force from said force means through said deflectible portion to said tooth.

Claim 11

A device for use in a dynamic mechanical system applying vibratory energy to an implement for earth working, said device comprising: a frame for said dynamic mechanical system carried by a motor vehicle; a generally upright impacted member including an upper end and an earth engaging lower end; first pivot means on the frame supporting the upper end of the impacted member for pivoting about a first pivot axis; a generally upright impacting member in a coacting relation with said impacted member; and second pivot means on the frame supporting said impacting member for pivoting about a second pivot axis coaxial with said first pivot axis, said inpacting member being arranged to receive vibratory energy from dynamic system and to deliver the energy to said impacted member, said members having coextensive impact transmitting surfaces, said surfaces generally extending toward and away from the pivot supports of said members with an initial contact area at end of the surfaces closest to the pivots and diverging out of contact at a small acute angle from said initial contact area, said impacted member being bendable under impacting forces to bring said impact transmitting surfaces into coextensive face-to-face force transmitting contact, whereby impact velocity between the members and stresses in the members are effectively minimized.

Claim 12

A device for use in a dynamic mechanical system applying vibratory energy to an implement for earth working, said device comprising: a frame for said dynamic mechanical system carried by a motor vehicle; a generally upright impacted member including an upper end and an earth engaging lower end; first pivot means on the frame supporting the upper end of the impacted member for pivoting about a first pivot axis; a generally upright impacting member in a coacting relation with said impacted member; and second pivot means on the frame supporting said impacting member for pivoting about a second pivot axis coaxial with said first pivot axis, said inpacting member being arranged to receive vibratory energy from dynamic system and to deliver the energy to said impacted member, said members having coextensive impact transmitting surfaces, said surfaces generally extending toward and away from the pivot supports of said members with an initial contact area at end of the surfaces closest to the pivots and diverging out of contact at a small acute angle from said initial contact area, said impacted member being bendable under impacting forces to bring said impact transmitting surfaces into coextensive face-to-face force transmitting contact, whereby impact velocity between the members and stresses in the members are effectively minimized.