초록 ▼

A magnet head for a magnetic pick-up tool includes a magnet having a pick-up surface and a sleeve member having an open end and being slidably positioned over the magnet with the pick-up surface exposed through the open end, the sleeve member being made of a material acted upon by the magnet such th

A magnet head for a magnetic pick-up tool includes a magnet having a pick-up surface and a sleeve member having an open end and being slidably positioned over the magnet with the pick-up surface exposed through the open end, the sleeve member being made of a material acted upon by the magnet such that the magnet exerts a force upon the sleeve for maintaining the sleeve in a rest position wherein the open end extends beyond the pick-up surface, wherein the sleeve is slidable in a direction away from the pick-up surface and against the force to a withdrawn with respect to the magnet. A magnetic pick-up tool including a magnet head is also disclosed.

대표청구항 ▼

[ We claim:] [29.] A magnet head for a magnetic pick-up tool, comprising:a shaft;a magnet having a pick-up surface and an opposed end, said shaft extending from said opposed end in a direction away from said pick-up surface; anda sleeve member having an open end and being slidably positioned over sa

[ We claim:] [29.] A magnet head for a magnetic pick-up tool, comprising:a shaft;a magnet having a pick-up surface and an opposed end, said shaft extending from said opposed end in a direction away from said pick-up surface; anda sleeve member having an open end and being slidably positioned over said magnet with said pick-up surface exposed through said open end, said sleeve member comprising a ferromagnetic material acted upon by said magnet such that said magnet exerts a force upon said sleeve form maintaining said sleeve in a rest position wherein said open end extends beyond said pick-up surface, wherein said sleeve is slidable relative to said magnet and said shaft in said direction away from said pick-up surface and against said force to a withdrawn position with respect to said magnet;wherein said shaft includes means immovably fixed relative to said shaft and said magnet for moving said magnet relative to said sleeve so as to position said sleeve in said withdrawn position.