Patent application number | Description | Published |
20090308628 | ROTARY TOOL DRIVEN BY BRUSHLESS MOTOR - To provide a rotary tool driven by a brushless motor with which constant torque tightening work for screws or the like can always be performed properly and efficiently, in which overall downsizing and improved torque control precision enhancement can easily be achieved, and with which it is possible to eliminate occurrences of switch contact-induced sparking and wear and of the damage imparted to the peripheral electronic equipment and electronic circuitry as occurred in drive switches or torque detection mechanisms that use a conventional mechanical switch mechanism, so that the constituting parts are able to have a reduced size and an extended life. | 12-17-2009 |
20110030981 | Method of operating a rotary tool - To provide a rotary tool driven by a brushless motor with which constant torque tightening work for screws or the like can always be performed properly and efficiently, in which overall downsizing and improved torque control precision enhancement can easily be achieved, and with which it is possible to eliminate occurrences of switch contact-induced sparking and wear and of the damage imparted to the peripheral electronic equipment and electronic circuitry as occurred in drive switches or torque detection mechanisms that use a conventional mechanical switch mechanism, so that the constituting parts are able to have a reduced size and an extended life. | 02-10-2011 |
20120285301 | Screwdriver Bit - A screwdriver bit configured in such a way that when the tip of the screwdriver bit is to be fitted into a bit fitting groove of a screw, said bit fitting groove being formed on the top surface of the head of the screw, then damage is prevented from occurring on the top surface of the head of the screw, and proper fitting of the tip of said bit into the bit fitting groove is promptly and smoothly accomplished, with the result that the efficiency and safety of screw tightening work are significantly enhanced. This driver bit ( | 11-15-2012 |
Patent application number | Description | Published |
20090199753 | Thread cutter for sewing machine - A thread cutter for a sewing machine includes a first thread seizing assembly which is reciprocally movable and has a distal end formed with a first thread seizing portion, the first thread seizing assembly seizing a needle thread passing a bobbin case and a bobbin thread by the first thread seizing portion, the needle thread passing the bobbin case, a cutting blade located at a position nearer to the needle hole than a movement locus of the first thread seizing assembly, a second thread seizing assembly seizing the needle and bobbin threads both seized by the first thread seizing assembly during a backward movement of reciprocation of the first thread seizing assembly, cutting the needle and bobbin threads in cooperation with the cutting blade. When moved backward, the first thread seizing assembly is swung so that the first thread seizing portion comes close to the second thread seizing assembly. | 08-13-2009 |
20090199754 | Thread cutter for sewing machine - A thread cutter for a sewing machine includes a first thread seizing assembly reciprocally movable and including two unit thread seizing members having distal ends formed with first thread seizing portions respectively, a cutting blade located nearer to the needle hole side than a movement locus of the first assembly, and a second thread seizing assembly seizing the needle and bobbin threads both seized by the first assembly during backward movement of the first assembly, cutting the threads in cooperation with the cutting blade. When the threads seized by the first assembly are further seized by the second assembly, the first assembly is moved so that the distal ends of the unit thread seizing members are spaced from each other by a predetermined distance in a direction intersecting a movement direction of the first assembly. | 08-13-2009 |
20100107948 | Bobbin holding member and storage case - A bobbin holding member holds a bobbin, and the bobbin holding member includes a body portion that holds detachably an outer periphery of a brim portion provided to both ends of a middle body section of the bobbin, wherein the body portion includes a fitting portion and a fitting target portion to be fitted to the fitting portion of any of the other bobbin holding members. | 05-06-2010 |
20120031316 | THREAD CUTTER FOR SEWING MACHINE - A thread cutter for a sewing machine includes a first thread seizing assembly reciprocally movable and having a distal end with a first thread seizing portion, a second thread seizing assembly seizing needle and bobbin threads both having been seized by the first assembly during a backward movement of reciprocation of the first assembly, cutting the needle and bobbin threads in cooperation with a cutting blade, and a thread cutting frame supporting the first assembly and formed with a single elongated groove supporting the first assembly so that the first assembly is movable. The elongated groove includes a linear proximal end groove, an oblique portion, and a main groove and being shaped such that the proximal end groove is translated slightly forward through the oblique portion. When moved backward in the reciprocation, the first assembly is swung so that the first thread seizing portion comes close to the second assembly. | 02-09-2012 |