Magnetic retrieval tool

Details Magnetic retrieval tool Magnetic retrieval tool

1988-02-10

1989-03-21

Marbert, James B.

Handling: hand and hoist-line implements

Magnet

335285, 335302, H01F 720, A63F 900, B66C 104

Patent

active

048137294

ABSTRACT:
A magnetic retrieval tool for retrieving magnetically attractable objects includes a magnet supported in a magnet housing on an elongated, flexible shaft. The magnet is positioned adjacent a face of the housing and is oriented with a line extending through the N and S poles being generally parallel to the face with pole pieces concentrating the magnetic force of the magnet at the face. A remotely operated force reduction feature includes a sleeve of a magnetically attractable material movable between a first position with at least a portion of said magnet disposed within the sleeve to reduce the magnetic forces of the magnet and a second position with the sleeve remote from said magnet.

REFERENCES:
patent: 1521173 (1924-12-01), Catching
patent: 2428864 (1947-10-01), Boyd
patent: 2683618 (1954-07-01), Long
patent: 2693979 (1954-11-01), Russell
patent: 3169791 (1965-02-01), Twachtman
patent: 3223898 (1965-12-01), Bey
patent: 3452310 (1969-06-01), Israelson
patent: 3477050 (1969-11-01), Hinger
patent: 3771084 (1973-11-01), Thon
patent: 4649116 (1987-03-01), Daty et al.

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