Switching magnet

Details Switching magnet Switching magnet

1981-07-08

1983-07-05

Shoop, William M.

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

Magnet structure or material

336234, 336 83, H01F 300

Patent

active

043921175

ABSTRACT:
A magnetic structure including a coil and yoke includes a bobbin or spool having a coil wound thereon, the flanges at the ends of the bobbin having protruding ribs defining radially extending slots which receive the legs of bundles of U-shaped laminations. The outer corners of the laminations are beveled or chamfered and are retained in position by end plates which have inwardly protruding inclined surfaces positioned to engage the beveled corners, thereby preventing outward radial movement of the laminations. The end plates can then be retained in place by conventional fastener means. The entire assembly can also be spray-coated with plastic. The laminations themselves are not perforated.

REFERENCES:
patent: 461135 (1891-10-01), Stanley, Jr.
patent: 1282086 (1918-10-01), Johannesen
patent: 1644729 (1927-10-01), Johannesen
patent: 2434096 (1948-01-01), Ayers et al.
patent: 3636488 (1972-01-01), Wiesner
patent: 3947955 (1976-04-01), Thiessens et al.
patent: 4315232 (1982-02-01), Spoldi et al.

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