Auxiliary device for maintaining a screw upright

An auxiliary device includes a base, two rotatable arms, and an elastic member. The two arms are rotatably connected to the base and each includes a mating surface that defines a recess. The recesses of the two arms cooperatively form a through hole when the mating surface is in contact with each ot...

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Bibliographische Detailangaben
Hauptverfasser:	LU LIIN, XIANG JIAN-HUA
Format:	Patent
Sprache:	eng
Schlagworte:	COMBINED OPERATIONS HAND TOOLS MACHINE TOOLS MANIPULATORS METAL-WORKING NOT OTHERWISE PROVIDED FOR OTHER WORKING OF METAL PERFORMING OPERATIONS PORTABLE POWER-DRIVEN TOOLS TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FORFASTENING, CONNECTING, DISENGAGING OR HOLDING TRANSPORTING UNIVERSAL MACHINE TOOLS
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Beschreibung
Zusammenfassung:	An auxiliary device includes a base, two rotatable arms, and an elastic member. The two arms are rotatably connected to the base and each includes a mating surface that defines a recess. The recesses of the two arms cooperatively form a through hole when the mating surface is in contact with each other. The through hole includes, from top to bottom, a first tapered hole portion, an annular groove, a second tapered hole portion, and a round hole portion. The annular groove is used to receive a head of a screw, and the round hole portion has a lateral surface is used to contact a shank of the screw to keep the screw upright. The elastic member is arranged between the two rotatable arms and applies a pushing force to the two rotatable arms.