Wrench with outstanding grip

The present invention relates to a wrench of hand tool comprising a grip wherein at least one end of the grip is a driving head, and there is a sunken area on the surface of the grip. The sunken area is filled with many convexities and intensive knurl is implemented and embossed mark is established, the embossed mark being surrounded with the intensive knurl is visually outstanding so that the marks are outstanding of visual identification meanwhile the purpose of comfort and firmness in grip is achieved.

FIELD OF THE INVENTION

The present invention relates to a wrench of hand tool wherein the grip has a sunken area which is filled with many convexities and convex marks so that the marks are outstanding of visual identification meanwhile the purpose of comfort and firmness in grip is achieved.

BACKGROUND OF THE INVENTION

A conventional wrench is shown onFIG. 18. Normally, a conventional wrench would have been processed with either reflexible or non-reflexible surface treatment; which means the body20, grip21, mark area22, mark221and all other areas are either reflexible or non-reflexible. Defects of a conventional wrench are described as follows:

1. Since the surface treatment is applied to the whole set of the wrench, the mark221and the body20are in the same condition; besides, the mark area22is not wide enough to have bigger mark221, therefore the mark221is not easy to be identified with the body20. When an operator is working at a dim place such as inside an engine compartment of an automobile, varieties of wrenches are not easy to be identified and then operations are bothered.

2. Since the whole set of the wrench has either reflexible surface or non-reflexible surface except the two driving ends, surface of the wrench is in a flat and smooth condition without substance to create enough friction to avoid getting loose in hand when operating.

3. In manufacturing process of the wrench, the mark area22and the mark221are generally forged to form with use of jigs. After certain numbers of the forging process, the jigs are likely damaged of abrasion with the body20, cracks are easily coming out on the edge of the mark area22and in between the mark area22and the mark221, and then productions are fault.

The present invention is an improvement on the shortcomings of the conventional wrench described above.

SUMMARY OF THE INVENTION

The present invention relates to structural improvement of a wrench which includes a body with its grip in appropriate length, a sunken area in appropriate shape and depth for mark on one side of the grip, intensive plurality of knurls and embossed mark inside the sunken area; the surface of the embossed mark are not the same as that of the knurl in the sunken area, but the same as that of the grip, therefore the mark is outstanding of visual identification.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Referring toFIGS. 1 and 2, the wrench10of the present invention comprises a grip11which has two ends and a longitudinal axis connecting with two ends, and at least one end is a driving head, this embodiment shows the grip has two driving heads on both ends, one is an open end driving head101and the other is a box end driving head102; the grip has two flat surfaces and there is at least one mark area in appropriate width and length on the surface of the grip11, the mark area includes a sunken area12with appropriate depth wherein intensive plurality of knurls121is implemented therein and at lease one embossed mark122is established therein, the embossed mark122being surrounded with the intensive plurality of knurls121is visually outstanding. The embodiment shows the top of the plurality of knurls121and the surface of the grip11are in same level, the embossed mark122inside of the sunken area12can be letter, symbol or graph, the top of the embossed mark122and the surface of the grip11can be in same level.

Referring toFIGS. 3 and 4, the second embodiment of the present invention shows larger scale of knurl121inside of the sunken area12by using press forming such that more friction would be created when gripping.

Referring toFIG. 5, the third embodiment of the present invention shows that the cross section of the grip11is shaped oval, on which the sunken area12is a concaved curve and the knurl121is in smaller scale.

Referring toFIG. 6, the fourth embodiment of the present invention shows that the cross section of the grip11is shaped oval, on which the sunken area12is a concaved curve and the knurl121is in larger scale.

Referring toFIG. 7, the fifth embodiment of the present invention shows that the cross section of the bottom of the sunken area12is a conjunction of several concaved curves.

Referring toFIG. 8, the sixth embodiment of the present invention shows that there are three mark areas, i.e. three sunken areas12on the grip11.

Referring toFIG. 9, the seventh embodiment of the present invention shows that the grip11has a driving head102at one end.

Referring toFIG. 10, the eighth embodiment of the present invention shows that the grip11is flat and wide with two flat grip surfaces110and111, and the mark area extends onto one side of the grip surface110/111.

Referring toFIG. 11, the ninth embodiment of the present invention shows that each of the plurality of knurls121inside of the sunken area12is in striped shape that is vertical to the extending direction of the longitudinal axis of the wrench.

Referring toFIGS. 12 and 13, the tenth embodiment of the present invention shows that each of the plurality of knurls121inside of the sunken area12is in striped shape which extending direction is parallel to the direction of the longitudinal axis of the wrench.

Referring toFIG. 14, the eleventh embodiment of the present invention shows that the knurl121inside of the sunken area12has bigger spacing between each knurl.

Referring toFIG. 15, the twelfth embodiment of the present invention shows that the knurls121inside of the sunken area12are dot knurls.

Referring toFIG. 16, the thirteen embodiment of the present invention shows that the grip11is flat and wide with two flat grip surfaces110and111, and the sunken area12extends onto both sides of the grip surface110/111.

Referring toFIG. 17, the present invention is emphasizing the grip11of the wrench10, types of driving heads adopted at the two ends of the grip11are not specified, i.e. the driving heads can be open type, box type or with ratchet wheels.

In summary of the present invention, the surface treatment applied to the whole set of the wrench made the wrench has either reflexible surface or non-reflexible surface, the sunken area12is full of intensive plurality of knurls121which surround the embossed mark122, therefore the embossed mark122is outstanding and visual identification. Through design the mark area can have various graphs to increase the visual beauty meanwhile the purpose of comfort and firmness in grip is achieved.