Back to results
US 4,730,860 AGranted
Mechanical vibrating shovel
OwnerEdwin Padgettinventor
Life of this patent
Estimating the term…
Abstract
A common shovel is equipped with a spring activated vibrator. The vibrator is mounted between the handle and the blade. A downward thrust of the handle causes the blade to vibrate. This vibration increases the digging efficiency of the shovel.
Claims3
A mechanical vibrating shovel, comprising:
- a handle;
- a blade;
- a spring actuated vibrator;
- means for mounting said spring actuated vibrator between said handle and said blade;
- and
- said spring actuated vibrator further comprising mechanical means for vibrating said blade when a force is applied to said handle against said blade;
- said means for mounting said spring actuated vibrator between said handle and said blade further comprising:
- a mounting cylinder affixed to the top of said blade;
- said mounting cylinder further comprising a vertical cylinder rising above said blade;
- said vertical cylinder having parallel vertical slots;
- said handle further comprising a piston slidingly engaged inside said vertical cylinder;
- said piston further comprising stopper bolts slidingly engaged inside said parallel vertical slots wherein said stopper bolts limit the travel of said piston inside said vertical cylinder;
- said piston further comprising said spring actuated vibrator.
10 more elements
The mechanical vibrating shovel of claim, wherein said mechanical means for vibrating said blade further comprises:
- a vertical cylinder inside said piston;
- said vertical cylinder having a downward facing opening;
- a bolt slidingly engaged within said vertical cylinder;
- said bolt protruding from said vertical cylinder and rotatingly affixed to said mounting cylinder;
- said bolt having a spiral groove;
- said piston further comprising a stopper;
- said stopper having a central opening slidingly engaged around said bolt;
- said stopper having at least two ball bearings slidingly engaged in said spiral groove, thereby causing said bolt to rotate as said stopper travels downward around said bolt, as propelled by said force on said handle;
- said stopper having one end of a compression spring affixed thereto;
- said compression spring having at its opposite end a vibrating head, wherein said rotation of said bolt rotates said vibrating head;
- said vibrating head having teeth on its lower surface;
- said mounting cylinder having ridges at the uppermost portion, slidingly engaged with said teeth, wherein said rotation of said vibrating head causes said mounting cylinder and said blade to vibrate.
9 more elements
Dependencies are inferred from the claim text.