Box spanner with a device for retaining the object to be turned

Details Box spanner with a device for retaining the object to be turned Box spanner with a device for retaining the object to be turned

1997-09-04

1999-07-20

Smith, James G.

Tools

Wrench, screwdriver, or driver therefor

Rigid jaws

811801, B25B 1302

Patent

active

059243430

ABSTRACT:
A spanner for installing and removing spark plugs includes an annular peripheral groove extending around an external peripheral surface of a socket end of a tubular member. A group of radial passages extends from the groove through the tubular member to a seat of the socket end. Permanent magnets are mounted in the passages. An annular band is mounted in the groove and exteriorly covers the magnets.

REFERENCES:
patent: 3869945 (1975-03-01), Zerver
patent: 5074172 (1991-12-01), Fetter et al.
patent: 5544555 (1996-08-01), Corley et al.

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