WIGO

Abstract

Cordless ratchet wrench is designed with the various upgrades in its design from the previously available cordless ratchet wrench. The ratchet actuator, which was a motor, the direction for the rotation of the output shaft was easily adjusted. A battery was used in the new design to provide the power for the rotation of the shaft for tightening and losing purpose. The push-button was used to trigger the rotation of the shaft for the tightening or the losing purpose. The pneumatic air ratchet wrench is the second model and it is also used as the latest electric wrench for the tightening and the losing purpose. The air motor is used in the design instead of the regular electric motor to make a pneumatic air ratchet wrench. The structure of the pneumatic air ratchet wrench is easily handleable at different locations.

Claims

1-19. (canceled)

19. The electric motor for the rotation purpose of the shaft.

20. A rechargeable lithium-ion battery with its proper housing connecting to the body which enclosure the motor in claim [1].

21. A reversal switch attached with the motor and rechargeable battery as in claim [2] to allow the alternate direction operation.

22. The output shaft for the holding of the tools.

23. The wrench of claim [1] there is the bottom edge and the top edge of the first gear. The bottom edge of the wrench is opposite to the top edge, There is a keyed slot in the first gear which is centrally disposed of. There are the teeth of the first gear which extend from the top edge of the first gear to the bottom edge. The top surface of the first gear is recessed, and the bottom surface is disposed centrally on the slot.

24. The second gear of the developed cordless ratchet wrench of claim [5] has also two edges. The bottom edge and the top edge. The bottom edge is opposite to the top edge. The second gear has the predefined and calculated aperture. The aperture of the second gear extends from the centrally disposed of aperture. The teeth of the second gear are located on the outer circumference of the gear. The teeth of the second gear also extend from top edge to bottom edge.

25. The wrench of claim [6] a ball is used in the circumferential groove, the size for the ball was predetermined and it was used for the free-rolling purpose in the developed wrench. The ball was disposed between the second and the first gear as seen in claim [5].

26. A predetermined slot is used in the first gear as in claim [5]. The shape of the wheel is circular.

27. A predetermined wheel is used in the second gear as in claim [6] which is the driver gear for the wrench. The shape of the wheel is circular.

28. The developed model or the design of the cordless ratchet wrench also uses the bearings in its structure. The circular bearings are used in the model, The size for the aperture of bearings was predefined as in claim [7]. The bearing has a shoulder that is centrally disposed of and is circular. The shoulder of the wrench extends from the aperture at a predetermined distance.

29. The wrench as in claim [6] has interchangeable head. The heads of the wrench can be easily changed to open or loosen a bolt of user choice. The interchangeable heads for the different bolts will be according to the standard and metric bolt sizes available.

30. The wrench will be operated with the art of the pneumatic impact. A pneumatic motor is used to rotate the output shaft of the wrench. The mechanical power is obtained with the help of the air motor which converts the air pressure into mechanical work. With the help of the source of the air pressure, the different kinds of fasteners are tightened or loosed.

31. The wrench of claim [1] trigger is used to operate the wrench. When the trigger is pressed the wrench will operate as per its predetermined mechanism. The flow of the air pressure is controlled with the help of the trigger to operate tightening or loosing.

32. The use of air motor as in clam [1] is perfectly aligned with the rotor rotation axis to provide a perfect rotation to the output shaft.

33. The wrench of claim [2] the output shaft is supported with the help of the hammer in the structure of the developed design to provide better control.

34. The wrench of claim [3] casing or the housing of the developed model is designed with the calculations to minimize the inertia experienced during the operation of the air ratchet wrench.

35. The wrench of claim [4] the output shaft end is changeable which can be easily changed with the required tool for the tightening or loosing of the different hardware such as nuts, screws, etc.

36. The wrench of claim [6] the cam and clutch are used in the design which is used for the interconnection of the air motor and the hammer which is used for the axial rotation.

37. The wrench of claim [1] the housing of the motor includes the proper space for the clutch, air motor, hammer, can and anvil. The housing of the motor is kept airtight.

38. The changeable heads of the wrench as in claim [6] will be easily changed with the desired type of fastener.

39. The wrench of claim [9] has standard and metric sizes heads for the bolts will be attachable or detachable with the output shaft of the air ratchet wrench.

Description

BRIEF DESCRIPTION OF DRAWINGS: (REPLACEMENT)

[0008] FIG. 1. This latest wrench, equipped with the battery [3], is generally used to assemble, or disassemble several hardware [7] components with ease. This particular model of the wrench comparatively has many of the advanced features. By these features the time of the user can be saved, the quality work can be done and most importantly the safety of the user can be insured. That's why this wrench has novelty. Every part of this wrench has a specific and predetermined work, for effective working. The innovation in this wrench is the introduction of the electronic circuitry with the use of some hardware. The key part of this wrench is basically motor [4], which controls the overall working. Such a motor is used in this wrench, which can easily start in a very short interval and can also perform some load work without overheating or any issue. By the movement of the motor, the connected shaft will rotate and consequently it will tighten or loose the predefined hardware components. In this model, the controlling of the motor can be done by a simple push button. By pressing the push button motor will start rotating and when the pressure is removed it will stop rotating. For the more ease, the direction [6] of the motor can also be controlled by the use of the dedicated button. Basically, there are the two buttons on the cordless ratchet wrench, which are used for better performance. One button is for the trigger controlling of the ON and OFF state of the motor and the second button is to control the direction of the moving motor. There is a head [1] on this wrench, which hold the whole body, this head also has some flexibility to perform the operation on the different components. There is a lithium battery [3] connected with the motor. The source of power in this tool is basically the battery, which can be recharged any time. For the best performance of the wrench, a standard lithium ion battery is connected with the motor. For the standard charging of the battery, a proper charger is also a part of this tool. By this standard charger the battery of wrench can be easily charged in a defined amount of time. For the ease of the user, the charging sign is also printed at the charging terminal. Main body is the significant part of this latest wrench, in the main body there is a symmetry of the electronic circuitry [2] and the hardware. The wiring of the motor and the battery is also included in the main body. These wirings are insulated by the insulating material to keep the user safe from any electrical shock. The outer body of this wrench is taken as a moderate one, not as soft so that the inner components can't be broken, not as hard that the inner components can be broken.

BRIEF DESCRIPTION HEADS (REPLACEMENT)

[0009] They are basically the changeable heads, that can be used according to the different hardware components. These heads are also known as flexible heads, their shape and the size of the head depends upon the size of the bolt. In the older times, there was no concept of changeable heads. If there is a bolt having a different size, then the head of the wrench can be easily changed for the ease of working. The head is usually connected at the upper side of top head assembly. At top head assembly, all the upper components and the body is connected. The material used for the construction of removable heads is same, but there are several kinds of the removable heads, that depend upon the requirements of the work.

REFERENCES

[0010] [1] “A New Ratchet-Wrench,” Scientific American, vol. 83, no. 2, pp. 388-388, 1900.

[0011] [2] G. H. Ander, “Screw-driver Wrench and Tap Wrench,” Scientific American, vol. 105, no. 20, pp. 433-455, November 2011.

[0012] [3] J. T. Warner, “Lithium ion Battery operation,” Lithium-Ion Battery Chemistries. Pp. 43-77, 2019.

[0013] [4] J. F. W. Schnorr, “Design of a High Temperature Air Motor,” January 1978.