GB2328394A - Handle for a hand tool - Google Patents

Abstract

A handle 10 for a handle tool, such as a screwdriver, comprises a plastics moulded core having roughened areas on its surface. An adhesive material is laid over the roughened areas together with particulate material, such as sand 11 or cedar dust 12 together with a foaming material 13. A layer of felt material is then placed over these other layers. The combined materials enable a user to grip the handle in environments which are prone to be greasy.

Description

Title: Anti-Slippae Handle for Handtools This invention pertains to an anti-slippage handle for handtools, especially concerns a type that utilizes sandblasting and felt planting method to cover the handle surface with an appropriate amount of specific function of material, so that it can be adapted to work places that tend to have excessive amount of grease, and provide a more comfortable holding sensation.

In terms of work places that tend to generate excessive amount of grease, such as garages, machinery assembly shops. and the likes, the issue concerning whether the tool hands are equipped with anti-slippage function has caused a major concern, and is a key in the selection of tools. After all, if inappropriate handtools were selected in work environments with excessive grease, it not only severely jeopardize the operation progress but could also brought on the concern of hand injuries to the operating personnels.

Until this date, the so-called anti-slippage function for hand tool handles are seen in the British Patent number 2275014, which primarily utilizes several rings of rough concave slots on the handle of plastic material, while the concave slots are pasted with a layer of fiber material or power-like substance to form an anti-slippage layer, and with which to increase tile rubbing surface between the handle and the handler. However, this cominonly used previous patent case is sufficient to perform several rotating exertion in the operation under the environlnents with no or less grease; nonetheless, under the circumstances where the operators' hands are covcred with grease, then when the operators exert forces the handtools tend to fall off and causing conditions that are difficult to exert force. At this, it is believed that most people share the same expedience.

The reason for the occurrence of slippage is mainly due to that a singular material tends to be used as the anti-slippage layer. which the said layer may not concurrently act as an anti-slippage, anti-grease, grease absorbing agent yet still maintain a flex as the features. For example, that the felt layer merely functions to absorb the grease, yet the power-like substance onl! has tlle anti-slippage feature.

Therefore, when exccssivc g:-case cccurs, t'ne grease will ill dissolve into the acti- slippage layer of the handle, and penetrate to the human bodies' hand prints at the same time. As a result, the human bodies' hands will cease to produce a good traction, and naturally the slippage phenomenon will occur.

As a result, the inventor, being aware of this, has utilized his practical experience and profession know-how in this industry to actively concentrate in research and development. in hope to utilize several different featurcs of materials concurrently by blending them together to form an integrated material layer and a felt cloth layer to offer a combination of function in anti-slippage, grease absorption, anti grease and maintaining the flex, and to achieve an outstanding anti-slippage function as the main objective of this invention.

According to the invention, an anti-slippage handle structure for a handtool comprises a handle with a rough surface, an adhesive layer coated on that rough surface, an integrated material layer blended from fine sand, wood dust and EVA formed material coated on the adhesive, and an appropriate amount of felt materials planted over the surface of the said integrated material layer.

According to another aspect of the invention, there is provided a method of forming an anti-slippage handle for a handtool, said method comprising furnishing a handle with a rough surface, applying an adhesive layer to that rough surface, coating an integrated material layer blended from fine sand, wood dust and EVA formed material on the adhesive layer, and planting felt material over the surface of said integrated material layer.

In order to further understand the technique, methods employed in this invention arud its structural cliaractr Lstlcs. detailed illustratioles and explanations are as set forth below: Simplified explanation for the figures: Figure-l: it is an illustration for a better implemented example of this invention.

Figure-2: It is a partial, dissected, and enlarged illustration of the handle as p-oposed by this invention.

As shown in the illustrations, it primarily requires that the plastic material -for - the handle 10 be injected or molded by an II1Jectioii inulding rriachjne, and the surface where the sarublaziing ot telt planting is required will be pxocesstng to a rough surface. After Inc handle cools and shapes. the rough surfaces of the handle is coated with an appropriate amount of adhesive, and then inserted into a sandblasting mac!line for coating with an integrated material layer that has been blended with fine sand 11, cedar dusts 12 and EVA foaling material 13. Thereafter, it is then placed at the felt planting machine for coating an appropriate amount of felt material over the said integrated material layer until it has been ail-dried to complete.

Among which, the adhesive coating layer's thickness is best to be maintained at the thickness of 0.15mm - 0.25mm; the diameters of the fine sand, cedar dusts, and EVA foaming particles are best to be kept between 0.2mm - O.3mm; while the coating density ratio for the integrate(l material layer and the felt material layer is best to be kept at approximately 2:3.

As for the composition of the fine sand 11, it nay be any substance that has appropriate abrasion, such as metallic fine particles, silicone particles, or plastic fine particles, and the likes that are all acceptable.

Because the coating density for the felt material layer is higher than that of the integrated material layer, thus the said felt material layeCs innumerable felts will thoroughly cover the entire integrated material layer so that it does not fall off from the adhesive coating, and will further prevent the operator's hand from directly touching it.

Therefore, upon the handle 10 has been produced, the felt layer is covered over the integrated material layer; in the ineaii tirlle, during actual clpplication. the portion of the felt material layer will absorb the grease and lk t it passes through to the gaps among the adjacent particles in that integrated material layer. and further maintains the external traction. Additionally, the surface softness of the felt material layer 14 an.i the flexibility of the EVA foamed layer will enable the handler to grip the handle 10, and coordinated with the powerful abrasion provided by the integrated material layer again the rough surfaces on the handle 10 to furiher accomplish a best anti gripping function.

Claims (7)

1. An anti-slippage handle structure for a handtool, comprising a handle with a rough surface, an adhesive layer coated on that rough surface, an integrated material layer blended from fine sand, wood dust and EVA foaming particles coated on the adhesive, and an appropriate amount of felt materials planted over the surface of the said integrated material layer.

2. A structure as claimed in Claim 1, wherein the adhesive layer has a thickness off.15 0.25mm.

3. A structure as claimed in Claim 1 or Claim 2, wherein the diameters of the fine sand, wood dust and EVA foaming particles are 0.2 - 0.3mm.

4. A structure as claimed in any preceding claim, wherein the coating density ratio of the integrated material layer and the felt material layer is approximately 2:3.

5. A structure as claimed in any proceding claim, wherein the fine sand comprises metallic fine particles, silicone particles, or plastic fine particles.

6. A method of forming an anti-slippage handle for a handtool, said method comprising furnishing a handle with a rough surface, applying an adhesive layer to that rough surface, coating an integrated material layer blended from fine sand, wood dust and EVA foaming particles on the adhesive layer, and planting felt material over the surface of said integrated material layer.

7. An anti-slippage handle for a handtool substantially as hereinbefore described with reference to and as illustrated in the accompanying Figures.