초록 ▼

An automatic fluid valve (25) includes a drive member (32) having an aperture (43) and a driven member (54). The automatic fluid valve (25) also includes at least one torque transfer member (38) for transferring torque from the drive member (37) to the driven member (54) and at least one elastic mem

An automatic fluid valve (25) includes a drive member (32) having an aperture (43) and a driven member (54). The automatic fluid valve (25) also includes at least one torque transfer member (38) for transferring torque from the drive member (37) to the driven member (54) and at least one elastic member (36) disposed between the drive member (32) and the driven member (54). The at least one elastic member (36) is responsive to a force transferred by the driven member (54). The automatic fluid valve (25) also includes a fluid blocking member (30) disposed within the aperture (43) for selectively allowing or preventing the flow of fluid (100) through the aperture (43). The fluid blocking member (30) is responsive to compression or decompression of the at least one elastic member (36).

대표청구항 ▼

[ What is claimed is:] [15.] A method of drilling through a substrate wherein the method comprises the steps of:(a) mounting a drill bit on a driven member;(b) connecting a drive member to the driven member;(c) applying rotation controllably from a motor to said drive member so that said drive membe

[ What is claimed is:] [15.] A method of drilling through a substrate wherein the method comprises the steps of:(a) mounting a drill bit on a driven member;(b) connecting a drive member to the driven member;(c) applying rotation controllably from a motor to said drive member so that said drive member imparts rotation to said driven member and the drill bit;(d) while rotating the drill bit, advancing the drill bit axially into the substrate to be drilled at a controlled rate to thereby load the rotating drill bit into a specified range of loading; and(e) in responsive to loading in the specified range, controllably opening a fluid flow valve to deliver a flow of lubricant to the rotating drill bit while operating in the range, and switching off the flow when operating outside the selected range.