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A fastener driving apparatus for driving fasteners into a substrate. The fastener driving apparatus is a combination of a motor driven linear motion converter; a compression cylinder; an expansion cylinder and a valve arrangement. The linear motion converter converts a rotational motion of a motor t

A fastener driving apparatus for driving fasteners into a substrate. The fastener driving apparatus is a combination of a motor driven linear motion converter; a compression cylinder; an expansion cylinder and a valve arrangement. The linear motion converter converts a rotational motion of a motor to a linear motion of a compression piston within the compression cylinder causing a gas within the compression cylinder to be compressed. The compressed gas is communicated to the expansion cylinder through the valve arrangement wherein the compressed gas expands causing an anvil coupled to an expansion piston within the expansion cylinder to move axially. The axial movement of the anvil causes a fastener to be driven into the substrate. The fastener driving apparatus is an ergonomically designed portable hand held tool providing comfort to a user, meeting safety standards and performance efficiency requirements.

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1. A fastener driving apparatus, comprising: a power source;a motor electrically connected to the power source;a first cylinder comprising a first piston reciprocally movable within the first cylinder, the first piston defining a gas chamber within the first cylinder, the gas chamber capable of acco

1. A fastener driving apparatus, comprising: a power source;a motor electrically connected to the power source;a first cylinder comprising a first piston reciprocally movable within the first cylinder, the first piston defining a gas chamber within the first cylinder, the gas chamber capable of accommodating gas therein;a first cylinder end cap configured at a first end of the first cylinder, the first cylinder end cap configuring the gas chamber between the cylinder guide, the first piston and the first cylinder end cap, the first cylinder end cap having a hollow portion,a slider crank arrangement driven by the motor, the slider crank arrangement operationally coupled to the first piston and configured to cause the first piston to reciprocally move within the first cylinder;a second cylinder comprising a cylinder guide,a second piston disposed within the cylinder guide, the second piston having a front face and a rear face, andan anvil coupled to the rear face of the second piston, wherein the second piston is capable of linearly moving within the cylinder guide, thereby enabling the anvil to move in a driving direction; anda valve arrangement operationally disposed between the first cylinder and the second cylinder, the valve arrangement defining a gas passageway for communicating the gas from the first cylinder to the second cylinder and the valve arrangement capable of assuming one of an open position and a closed position;wherein the gas received within the gas chamber is compressed by the first piston in a single stroke of the slider crank arrangement in a manner such that the compressed gas is communicated into the second cylinder through the gas passageway of the valve arrangement, causing the compressed gas to expand in the second cylinder thereby causing the second piston to move linearly and enabling the anvil to drive a fastener into a substrate in the driving direction in the single stroke of the slider crank arrangement. 2. The fastener driving apparatus of claim 1, wherein the slider crank arrangement is driven by the motor through a reduction mechanism. 3. The fastener driving apparatus of claim 1, wherein the first cylinder further comprises a cylinder guide configured to dispose the first piston there within,anda check valve, such that in an open position the check valve enables the entry of gas into the gas chamber and in a closed position prevents exit of gas from the gas chamber. 4. The fastener driving apparatus of claim 1, wherein the gas compressed by the first piston achieves a pressure consistent with a compression exponent equal to or greater than 1.05 before the valve opens. 5. The fastener driving apparatus of claim 1, wherein the valve arrangement comprises a valve body having a groove,a valve spool disposed within the groove, the valve spool having a front face portion,a rear face portion, anda valve spool stem extending outwardly from the front face portion,a valve return spring disposed within the groove and towards a rear end portion of the groove, anda gas passageway extending from the groove to the second cylinder, the gas passageway configuring a duct for communicating the gas from the gas chamber of the first cylinder to the second cylinder. 6. The fastener driving apparatus of claim 5, wherein the valve is mechanically tripped by a single stroke of the first piston by at least one of an electric motor, an electric signal, the first piston, and a cam. 7. The fastener driving apparatus of claim 5, wherein a closed position of the valve arrangement comprises the valve spool being disposed in the hollow portion of the first cylinder end cap,the valve spool stem extending into the gas chamber, andthe valve spool closing the gas passageway. 8. The fastener driving apparatus of claim 5, wherein the volume of the gas passageway is less than 15% of the gas chamber volume in the first cylinder. 9. The fastener driving apparatus of claim 5, wherein the valve arrangement is a snap acting valve and the valve spool has an opening time of less than or equal to about 20 milliseconds for opening from the initial closed position to greater than or equal to about 70 percent of full flow of the compressed gas. 10. The fastener driving apparatus of claim 1, wherein the second cylinder further comprises an anvil drive bumper configured at an end of the second cylinder away from an end coupling the valve arrangement, andan anvil retracting mechanism configured to retract the second piston to an original position. 11. The fastener driving apparatus of claim 10, wherein the original position is the position of the second piston towards an end of the second cylinder coupling the valve arrangement, and wherein the anvil retracting mechanism is in a substantially relaxed state. 12. The fastener driving apparatus of claim 1, further comprising a clutch configured to allow the motor to run continuously and enables storing energy necessary to drive the fastener into the substrate in the motor before being transferred to the slider crank arrangement. 13. The fastener driving apparatus of claim 1, further comprising at least one sensor configured to sense and locate the positions of the first piston within the first cylinder during the single stroke of the slider crank arrangement. 14. A fastener driving apparatus comprising: a power source;a motor electrically connected to the power source;a first cylinder comprising a first piston reciprocally movable within the first cylinder, the first piston defining a gas chamber within the first cylinder, the gas chamber capable of accommodating gas therein;a first cylinder end cap configured at a first end of the first cylinder, the first cylinder end cap configuring the gas chamber between the cylinder guide, the first piston and the first cylinder end cap, the first cylinder end cap having a hollow portion,a linear motion converter driven by the motor, the linear motion converter operationally coupled to the first piston and configured to cause the first piston to reciprocally move within the first cylinder;a second cylinder comprising a cylinder guide,a second piston disposed within the cylinder guide, the second piston having a front face and a rear face, andan anvil coupled to the rear face of the second piston, wherein the second piston is capable of linearly moving within the cylinder guide, thereby enabling the anvil to move in a driving direction; anda valve arrangement operationally disposed between the first cylinder and the second cylinder, the valve arrangement defining a gas passageway for communicating the gas from the first cylinder to the second cylinder and the valve arrangement capable of assuming one of an open position and a closed position;wherein the gas received within the gas chamber is compressed by the first piston in a single stroke of the linear motion converter in a manner such that the compressed gas is communicated into the second cylinder through the gas passageway of the valve arrangement, causing the compressed gas to expand in the second cylinder thereby causing the second piston to move linearly and enabling the anvil to drive a fastener into a substrate in the driving direction in the single stroke of the linear motion converter. 15. The fastener driving apparatus of claim 14, wherein the linear motion converter is one of an eccentric, a cam, a rack and pinion arrangement, a slider crank, a four-bar linkage, and a lead screw. 16. The fastener driving apparatus of claim 15, wherein the linear motion converter is driven by the motor through a gear reduction mechanism. 17. The fastener driving apparatus of claim 14, wherein the first cylinder further comprises a cylinder guide configured to dispose the first piston there within,anda check valve. 18. The fastener driving apparatus of claim 14, wherein the valve arrangement comprises a valve body having a groove,a valve spool disposed within the groove, the valve spool having a front face portion,a rear face portion, anda valve spool stem extending outwardly from the front face portion,a valve return spring disposed within the groove and towards a rear end portion of the groove, anda gas passageway extending from the groove to the second cylinder, the gas passageway configuring a duct for communicating the gas from the gas chamber of the first cylinder to the second cylinder. 19. The fastener driving apparatus of claim 18, wherein the valve arrangement is disposed between the first cylinder and the second cylinder in a manner such that the valve spool is disposed in the hollow portion of the first cylinder end cap. 20. The fastener driving apparatus of claim 18, wherein a closed position of the valve arrangement comprises the valve spool being disposed in the hollow portion of the first cylinder end cap,the valve spool stem extending into the gas chamber, andthe valve spool closing the gas passageway. 21. The fastener driving apparatus of claim 18, wherein an open position of the valve arrangement comprises the valve spool moving linearly within the groove in a manner such that the hollow portion of the first cylinder end cap and at least a portion of the gas passageway is open. 22. The fastener driving apparatus of claim 18, wherein the volume contained in the gas passageway is less than 15% of the first cylinder gas chamber volume. 23. The fastener driving apparatus of claim 14, wherein the second cylinder further comprises an anvil drive bumper configured at an end of the second cylinder away from an end coupling the valve arrangement, andan anvil retracting mechanism configured to retract the second piston to an original position. 24. The fastener driving apparatus of claim 23, wherein the original position is the position of the second piston towards the end of the second cylinder coupling the valve arrangement and the anvil retracting mechanism is in a substantially relaxed state. 25. The fastener driving apparatus of claim 14, wherein the valve arrangement is a snap acting valve and the valve spool has an opening time of less than or equal to about 20 milliseconds for opening from the initial closed position to greater than or equal to about 70 percent of full flow of the compressed gas. 26. The fastener driving apparatus of claim 14, further comprising a clutch configured to allow the motor to run continuously and enables storing energy necessary to drive the fastener into the substrate in the motor before being transferred to the linear motion converter arrangement. 27. The fastener driving apparatus of claim 14, further comprising at least one sensor configured to locate the position of the first piston and enabling the motor to be braked.