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US 6,145,899 AGranted
Shock absorbent shovel
OwnerMichael Kelemeninventor
Life of this patent
Estimating the term…
Abstract
A shovel having a shock absorbing element in its hand-grip in conjunction with a rigid shaft. The rigid shaft maintains the strength and rigidity required for heavy tasks, while the hand-grip provides yielding movements so as to absorb shock force without compromising the strength of the overall shovel. The hand-grip itself can also be adapted such that it can easily be affixed to, and removed from, the shafts of different shovels, allowing for interchangeability of hand-grips between shovels.
Claims8
A shock absorbent shovel comprising:
- a scoop;
- a rigid shaft having a first end and a second end, wherein the first end is fixedly and inflexibly attached to the scoop;
- and
- a hand-grip fixedly attached to the second end of the shaft, said hand-grip comprising a yoke having two prongs and a cross-bar slidingly movable in-between the two prongs in directions essentially parallel to the axis of the shaft, and said hand-grip having a shock absorbing element therein capable of providing yielding movement primarily parallel to the axis of the shaft,
- said shock absorbing element comprising a spring mechanism within each prong against which the cross-bar is slidingly movable, said spring mechanism within each prong comprising a piston and a spring element that is elastically held against that piston, and wherein each end of the cross-bar is fixedly attached to one of the pistons.
2 more elements
A hand-grip capable of being fixedly attached to one end of a rigid shaft to form a handle for a shovel, comprising:
- a yoke having two prongs and a cross-bar slidingly movable in-between the two prongs in directions essentially parallel to the axis of the shaft;
- and
- a shock absorbing element capable of providing yielding movement primarily parallel to the axis of the shaft, comprising a spring mechanism within each prong against which the cross-bar is slidingly movable,
- wherein the spring mechanism within each prong comprises a piston and a spring element that is elastically held against that piston, and wherein each end of the cross-bar is fixedly attached to one of the pistons.
1 more element
Dependencies are inferred from the claim text.