Magnetic closure device

Details Magnetic closure device Magnetic closure device

1978-06-26

1980-04-15

Dorner, Kenneth

Buckles, buttons, clasps, etc.

Buckles

One-piece

A44B 2100

Patent

active

041976185

ABSTRACT:
The present magnetic closure device has one or more holding members and one or more closure members, each with a surface configuration providing an increased frictional force, when two matching surface configurations cooperate. One member of a pair forming a closure device is a permanent magnet of so-called hard magnetic material, while the other member of a pair is a magnetic armature made of ferromagnetically soft, magnetizable material. The increased frictional force and the magnetic force combine to provide an effective closure device for articles of non-magnetic material, such as leather goods, textiles, and synthetic materials. The two members have a square or rectangular configuration and are corrugated whereby both members have the same configuration and the permanent magnet has poles of one polarity extending along the entire length of a ridge in the corrugation, and poles of the opposite polarity extending along the entire length of the valleys adjacent to a ridge. This type of closure device has greatly improved holding characteristics.

REFERENCES:
patent: 2389298 (1945-11-01), Ellis
patent: 3008209 (1961-11-01), Kurt
patent: 3102314 (1963-09-01), Alderfer

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