초록 ▼

The present invention relates to a handle, in particular for use in a screwdriver. Such handle comprises an outer region having a first stiffness and an inner region comprising a second stiffness. According to the invention the second stiffness is smaller than the first stiffness. The inner region m

The present invention relates to a handle, in particular for use in a screwdriver. Such handle comprises an outer region having a first stiffness and an inner region comprising a second stiffness. According to the invention the second stiffness is smaller than the first stiffness. The inner region might be built with chambers and ribs wherein the chambers might be hollow or filled with a soft material, e.g. a gel or a soft porous or non-porous plastic material.

대표청구항 ▼

I claim: 1. Hand tool handle comprising:a) a core;b) an inner region defining a longitudinal axis, said inner region comprising one element selected from the group consisting ofba) chambers located equidistant in a circumferential direction of said handle orbb) one single chamber being continuous in

I claim: 1. Hand tool handle comprising:a) a core;b) an inner region defining a longitudinal axis, said inner region comprising one element selected from the group consisting ofba) chambers located equidistant in a circumferential direction of said handle orbb) one single chamber being continuous in the circumferential direction of said handle,c) an outer region coupled to the inner region and disposed radially outside the selected element of the inner region, said outer region being built by a cover layer, whereinca) said outer region forms an outer surface of said handle,cb) said outer region is built with a material having a hardness of 40 to 105 Shore A, andcc) said outer region has a first stiffness;d) wherein said inner region is built in a radial transition region between said core and said cover layer,e) wherein said one single chamber is or said chambers are completely filled with a solid injection moulded plastic material having a porous or non-porous structure and a hardness of 10 to 45 Shore A,f) said hardness of said solid injection moulded plastic material completely filling said one single chamber or said chambers provides said inner region with a second stiffness, said second stiffness being smaller than said first stiffness of the outer region, andg) said outer region, said inner region, said solid injection moulded plastic material completely filling said one single chamber or said chambers, and said core are adhered or bonded to each other by injection moulding.