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US 12,129,619 B2Granted
Cleft-mallet
OwnerShachar Magaliinventor
Life of this patent
Estimating the term…
Abstract
A mallet is described that has at least one cleft, in such a structure that the stress wave created during impact has longer travel way than the length of the mallet as measured along the impact line. This mallet induces longer-lasting and weaker stress wave(s) in the anvil as compared to a solid mallet having the same outer dimensions and more or less the same weight. The Cleft-Mallet increases the effectiveness of the strike, while decreasing the stresses in the anvil.
Claims20
A cleft-mallet comprising:
- a first segment comprising an inner element having a contact face defining a terminal proximal end of the cleft-mallet;
- a second segment comprising a radial element having a terminal face defining a terminal distal end of the cleft-mallet and an opposing proximal face;
- a third segment comprising an outer tube directly connected to the radial element at a first connection portion, the first connection portion having a terminal face coincident with the terminal distal end of the cleft-mallet;
- and
- a cleft;
- wherein:
- the outer tube has a first longitudinal axis and a first length from a distal end to an opposite proximal end measured along the first longitudinal axis;
- the inner element is directly connected to the radial element at a second connection portion, the second connection portion having a terminal face coincident with the terminal distal end of the cleft-mallet;
- the cleft-mallet longitudinally extends exclusively between the contact face of the inner element and the coincident terminal faces of the radial element, the first connection portion, and the second connection portion;
- the inner element is arranged within the outer tube and has a second longitudinal axis and a second length from a distal end to an opposite proximal end measured along the second longitudinal axis, wherein the proximal end has a free end surface defining the contact face for impacting and driving an anvil configured as a hollow or solid pile into the earth;
- the second longitudinal axis is parallel to the first longitudinal axis;
- other than the respective connection portions, each of the inner element, the outer tube, and the radial element are separated one from another by the cleft;
- at least a part of the outer tube is a longitudinal segment configured for a stress wave traveling from the distal end of the outer tube to the proximal end of the outer tube;
- at least a part of the inner element is a longitudinal segment configured for a stress wave generated on impact of the contact face and the anvil traveling from the proximal end of the inner element to the distal end of the inner element;
- the radial element is a radial segment configured for a shear stress wave traveling from the distal end of the inner element to the distal end of the outer tube;
- and
- in use, the stress wave generated on impact of the contact face can only make a transition from the inner element to the radial element via the second connection portion and can only make a transition from the radial element to the outer tube via the first connection portion.
14 more elements
A cleft-mallet comprising:
- a first segment comprising an inner element having an inner element distal end and an opposite inner element proximal end;
- a second segment comprising a radial element having a terminal face defining a terminal distal end of the cleft-mallet and an opposing proximal face;
- a third segment comprising an outer tube directly connected to the radial element at a first connection portion, the first connection portion having a terminal face coincident with the terminal distal end of the cleft-mallet, the outer tube further having a contact face defining a terminal proximal end of the cleft-mallet;
- and
- a cleft;
- wherein:
- the outer tube has a first longitudinal axis and a first length from the proximal end to an opposite distal end measured along the first longitudinal axis;
- the inner element is directly connected to the radial element at a second connection portion, the second connection portion having a terminal face coincident with the terminal distal end of the cleft-mallet;
- the cleft-mallet longitudinally extends exclusively between the contact face of the outer tube and the coincident terminal faces of the radial element, the first connection portion, and the second connection portion;
- the inner element is arranged within the outer tube and has a second longitudinal axis and a second length from the inner element distal end to the opposite inner element proximal end measured along the second longitudinal axis;
- the proximal end of the outer tube has a free end surface defining the contact face for impacting and driving an anvil configured as a hollow or solid pile into the earth;
- the second longitudinal axis is parallel to the first longitudinal axis;
- other than the respective connection portions, each of the inner element, the outer tube, and the radial element are separated one from another by the cleft;
- at least a part of the inner element is a longitudinal segment configured for a stress wave traveling from the distal end of the inner element to the proximal end of the inner element;
- at least a part of the outer tube is a longitudinal segment configured for a stress wave generated on impact of the contact face and the anvil traveling from the proximal end of the outer tube to the distal end of the outer tube;
- the radial element is a radial segment configured for a shear stress wave traveling from the distal end of the outer tube to the distal end of the inner element;
- and
- in use, the stress wave generated on impact of the contact face can only make a transition from the outer tube to the radial element via the first connection portion and can only make a transition from the radial element to the inner element via the second connection portion.
15 more elements
Dependencies are inferred from the claim text.