Cordless fastener driving tool

1. A fastener driving tool, comprising:

a housing;

a fastener driver within said housing having a first at rest/fired position and a second firing position;

a fastener driving subassembly within said housing including compressible means for storing energy shiftable between an at rest position and an energized position;

a first cam plate rotatably mounted on a shaft capable of rotation in a first direction and a second opposite direction;

a means for driving the tool comprising a toothed gear wherein said toothed gear and said first cam plate have opposing surfaces;

wherein said toothed gear contains a drive pin and said first cam plate contains a cam lobe on said opposing surface such that said drive pin and said cam lobe engage each other to rotate said first cam plate in said first direction;

a motor/gear subassembly within said housing for compressing said means for storing energy and moving said fastener driver to said firing position;

such that when said motor/gear subassembly moves said fastener driver to said firing position, energy stored in said means for storing energy moves said fastener driver from said firing position to said fired position, whereby driving a fastener.

2. The tool of claim 1 , wherein said means for storing energy comprises at least one Belleville spring washer.

3. The tool of claim 2 , further comprising an actuation cable coupled between said fastener driver and aid fastener driving subassembly.

4. A tool for driving fasteners, comprising:

a power source;

a housing;

a fastener containing magazine attached to said housing;

a motor, located within said housing, operated by said power source;

a trigger for controlling said motor;

a shaft, fixed within said housing;

a first cam plate rotatably mounted on said shaft capable of rotation in a first direction and a second opposite direction;

a second cam plate, fixed against rotation on said shaft and coaxial with said first cam plate and shiftable axially on said shaft between a first position and a second position;

a fastener driver, connected to said first cam plate and shiftable between an at rest/driven position and a second driving position; means for selectively coupling said first cam plate and said second cam plate;

compressible means for storing energy, coupled on said shaft between said second cam plate and said housing, shiftable between a first at rest position and a second energized position;

and means for driving said tool, comprising a toothed gear, activated by said motor and selectively coupled to said first cam plate, wherein said toothed gear and said first cam plate have opposing surfaces;

such that when said trigger is activated, said motor activates said means for driving said tool and rotates said first cam plate in said first direction, shifting said second cam plate linearly from said first position to said second position and shifting said means for storing energy from said first at rest position to said second energized position while simultaneously shifting said fastener driver from said at rest position to said second driving position, wherein said means driving said tool decouples from said first cam plate, causing said means for storing energy to rotate said first cam plate in said second opposite direction, and shifting said fastener driver from said driving position to said driven position, driving a fastener from said magazine, wherein said toothed gear contains a drive pin and said first cam plate contains a cam lobe on said opposing surfaces such that said drive pin and said cam lobe engage each other to rotate said first cam plate in said first direction.

5. The tool of claim 4 , wherein said means for storing energy comprises at least one Belleville spring washer.

6. The tool of claim 4 , wherein said means for storing energy comprises a plurality of Belleville spring washers.

7. The tool of claim 4 , wherein said fastener driver is connected to said first cam plate by a flat stiff mesh cable which is wound around the periphery of said first cam plate.

8. The tool of claim 7 , wherein said fastener driver is pushed from said at rest position to said driving position by said flat stiff mesh cable.

9. The tool of claim 4 , wherein said motor activates said means for driving said tool using a worm gear.

10. The tool of claim 4 , wherein said first and second cam plates have opposing surfaces, with each of said surfaces having a plurality of correspondingly opposing ramps within said surface.

11. The tool of claim 10 , wherein said means for coupling said cam plates together comprises a ball bearing located within each of said ramps.

12. The tool of claim 4 , wherein said power source comprises a portable battery which is removably coupled to said housing.

13. The tool of claim 4 , wherein said toothed gear contains a latch mechanism and said first cam plate contains a drive pin on said opposing surfaces such that said drive pin and said latch mechanism engage each other to rotate said first cam plate in said first direction.

14. The tool of claim 13 , wherein after said first cam plate has rotated in said first direction for a set amount of rotation, said drive pin and said latch mechanism disengage.

15. The tool of claim 14 , wherein upon disengagement of said drive pin and latch mechanism, said means for storing energy shifts said second cam plate from said second position to said first position, causing said means for coupling said cam plates together to rotate said first cam plate in said second opposite direction.

16. The tool of claim 14 , further comprising a protrusion extending from said housing which contacts said latch mechanism to disengage said latch mechanism from said drive pin.

17. The tool of claim 4 , wherein said means for driving said tool, said first cam plate, said second cam plate, and said means for storing energy are located co-linearly on said shaft.

18. The tool of claim 17 , wherein said set amount of rotation comprises 200 degrees.

19. The tool of claim 4 wherein after said first cam plate has rotated in said first direction for a set amount of rotation, said drive pin and said cam lobe disengage.

20. The tool of claim 4 , wherein said means for storing energy comprises a coil spring.

21. In a fastener driving tool, a fastener driving mechanism, comprising:

a) a frame;

b) a central shaft affixed to said frame;

c) a first non-rotatable axially slidable cam positioned upon said central shaft and having a toothed gear opposing said first cam;

d) a compressible potential energy storing means positioned between said non-rotatable cam and said frame;

e) a second non-axially translatable cam rotatably positioned upon said central shaft, whereby said first and second cam having opposing surfaces;

f) said first and second cams having at least three correspondingly opposing ball ramps within each of said opposing surfaces, wherein said toothed pear contains a drive pin and said first cam plate contains a cam lobe on said opposing surface such that said drive pin and said cam lobe engage each other to rotate said first cam plate in said first direction;

g) a cam ball positioned within each set of opposing ball ramps, whereby rotation of said second cam, in a first direction causes said first cam to axially translate away from said second cam and rotation of said second cam in the opposite direction permits said first cam to axially translate towards said second cam;

h) a fastener driving member;

i) an actuation cable having a first end affixed to said fastener driving member and its opposite, second end, affixed to the periphery of said second cam, whereby a portion of said actuation cable is wrapped about the periphery of said second cam;

j) a motor drive assembly for rotating said second cam about said central shaft, whereby said second cam causes said first cam to translate away from said second cam, thereby compressing said means for compressing for potential energy storage while simultaneously causing said actuation cable to unwrap from the periphery of said second cam thereby positioning said fastener driving member into its fastener driving configuration, whereupon release of said rotatable cam from said motor drive assembly causes said means for compressing for potential energy storage to cause rotation of said rotatable cam in the reverse direction, thereby rewrapping said activation cable about said rotatable cam's periphery and driving the fastener driver whereby said driver drives a fastener into a workpiece.

22. The fastener driving mechanism of claim 21 , wherein said compressible means for storing energy comprises at least one Belleville spring washer.

23. The fastener driving mechanism of claim 22 , wherein at least one Bellville spring washer is coaxial with said central shaft.

24. The fastener driving mechanism of claim 21 , wherein said compressible means for storing energy comprises at least one coil spring.

25. The fastener driving mechanism of claim 24 , wherein said coil spring coaxial with said central shaft.

26. The fastener driving mechanism of claim 21 , further comprising means for monitoring the rotation of said toothed drive gear.