New Invention

Portable Forward Cutting Power Saw

***New Patent For Sale, Licensing, Manufacturing, and/or Investors***

U.S. Patent : # 6,722,046

Inventor : Ben L. Evenson

invention uses

prototype pics

patent drawings

contact info

patent attorney

As attorney for the inventor of the innovative Portable Forward Cutting Power Saw we are currently seeking manufacturing companies to license, purchase patent rights or enter into a royalty agreement for this timely invention.

The Portable Forward Cutting Power Saw relates generally to power saws, and more specifically, to a forward-cutting power saw having a drive gear assembly that turns a geared blade attachment plate and an adjacent cutting blade of a greater diameter.

Objects of the present invention:

to provide a cordless, hand-held rotary saw that can readily present an upwardly, downwardly, rightwardly and leftwardly exposed cutting blade sector, with full functional reciprocity between a right handed and left handed user

to provide a cordless, hand-held rotary saw having a cutting blade locking mechanism that prevents the blade from spinning and enables the cutting blade to be quickly and easily changed

to provide a cordless, hand-held rotary saw wherein the rotary cutting blade is placed on a gear-driven plate with a central hub assembly, along with two locking posts that pass through corresponding recesses in said cutting blade

to provide a cordless, hand-held rotary saw wherein movement of the gear-driven plate is transmitted via a drive shaft with a motor at one end and a drive gear communicating with said gear-driven plate

to provide a cordless, hand-held rotary saw wherein the power source of the motor is a rechargeable battery

to provide a cordless, hand-held rotary saw having spring loaded retractable blade guards

to provide a cordless, hand-held rotary saw that is simple and easy to use and economical in cost to manufacture

Now for the first time this unique product is available for millions of potential users. The low manufacturing cost is of major importance.

Prototype Pics

Figure A

Figure B

Figure C

Figure D

Figure E

Figure F

Figure G

Figure H

LIST OF REFERENCE NUMERALS

10 present invention 62 captive nut

12user 64 new blade

14 left hand 66 first blade guard spring

15left thumb 68 second blade guard spring

16 right hand 70 spring member

17right thumb 72 first blade guard first pivot member

18 pipe 74 first blade guard second pivot member

20front housing 76 second blade guard first pivot member

22 rear housing 78 second blade guard second pivot member

24grip 100 first blade guard edge pivot member

25 switch button 102 second blade guard edge pivot member

26switch 110 carrying case

27 switch button spring 112 case compartment

28motor 114 case compartment lid

30 battery 116 case compartment lid zipper

32wiring 118 belt loops

34 end cap 120 flap

36end cap apertures 122 hook and loop flap fasteners

38 key guide 124 securing nut

40rotary blade 130 tool belt attachment

42 rotor shaft 132 holster

44drive gear 134 belt clasp

46 blade gear 136 hook and loop fastener

48hub assembly 140 battery charger

50 blade gear locking posts 142 charger receptacle for device handle

52blade apertures 144 key

54 locking bolt 146 charger receptacle for battery

56first blade guard 148 AC Power Cord

57 first blade guard receding edge 150 auto charger plug cord

58second blade guard 152 function switch

59 second blade guard receding edge 154 function status inducator lights

60front housing top member

PATENT DRAWINGS

FIGURE 1
Figure 1 is a perspective view of the invention in use showing a man using the battery operated hand-held rechargeable saw and grinder for cutting material such as pipes, metal tubing, wires, etc. The present invention replaces the manual hacksaw in many operations. It also has replaceable saw and grinder blades in a plurality of sizes.

patent drawing

FIGURE 2
Figure 2 is a perspective view of the present invention. The fronts of the dual blade guards of the present invention help guide the tool then retract away from the material being cut.

FIGURE 3
Figure 3 is a top view of the invention. The locking bolt holds the blade guards, blade gear and rotary saw blade in place within the front housing and makes for easy changing of cutting blades.

patent drawing

FIGURE 4
Figure 4 is a side sectional view of the present invention.

FIGURE 5
Figure 5 is an exploded cross-sectional side view of the present invention.

FIGURE 6
Figure 6 is a parital frontal view with the blade guards sectioned.

FIGURE 7
Figure 7 is a partial sectional view showing the hub assembly, blade gear, locking bolt, locking posts, and rotary blade.

patent drawing

FIGURE 8
Figure 8 is a frontal view with the pivot members shown on the blade guards.

FIGURE 9
Figure 9 is a partial top view of another embodiment showing the pivot members on the edges of the blade guards.

FIGURE 10
Figure 10 is a perspective view of the storage and carrying case for the present invention comprising an enclosed case with a zip open lid for easy access to the saw. The case has a hook and loop flip down storage flap to store extra blades.

patent drawing

FIGURE 11
Figure 11 is a sectional side view of the tool belt attachment clip for allowing a user to clip the holstered saw to a belt for greater accessibility while working.

FIGURE 12
Figure 12 is a frontal view of the tool belt attachment clip of Figure 11.

patent drawing

FIGURE 13
Figure 13 is a perspective view of the recharging unit of the present invention which allows for recharging the battery by placing it in the battery receptacle or recharging the battery while still in the portable saw by placing the handle into the portable saw receptacle, where terminals from the charger will make contact with the battery by passing through recesses in the end cap.

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If you are interested in licensing, purchasing the rights to the above invention or entering into a royalty agreement please contact the office of Michael I. Kroll as follows:

Michael I. Kroll
171 Stillwell Lane
Syosset, New York 11791
Tel. #: 800-367-7774
Tel. #: 516-367-7777
Fax #: 800-367-7704
Fax #: 516-692-2787

E-Mail patent@invention.net

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