Electro-magnetic clutch

Details Electro-magnetic clutch Electro-magnetic clutch

1997-02-26

1998-12-08

Dougherty, Thomas M.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 75D, 310103, 310105, 310106, 188161, 188163, 192 843, 192 8431, F16D 6706, H02K 4910

Patent

active

058474781

ABSTRACT:
A self holding type connecting device comprising an armature which is disposed movably in an axial direction, a magnetic path member having a cross section formed along a closed loop and having an axial space wherein axial movement of the armature is permitted, a permanent magnet secured to the magnetic path member and forming two kinds of magnetic flux which pass through the armature and the magnetic path member, an electric magnetic coil which forms magnetic flux for moving the armature in an axial direction against the two kinds of magnetic flux, and switch for switching direction of the magnetic flux from the electric magnetic coil. In the device, decrease of connecting force due to abrasion of pads does not occur and power consumption can be remarkably reduced.

REFERENCES:
patent: 3730317 (1973-05-01), Jaeschke
patent: 4496922 (1985-01-01), Pardee
patent: 4978874 (1990-12-01), Isozumi et al.
patent: 5050711 (1991-09-01), Sawato
patent: 5119918 (1992-06-01), Pardee
patent: 5121018 (1992-06-01), Oldakowski
patent: 5172798 (1992-12-01), Mabee
patent: 5185542 (1993-02-01), Lazorchak
patent: 5490583 (1996-02-01), Anderson et al.

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