Self-aligning magnetic necklace clasp

Details Self-aligning magnetic necklace clasp Self-aligning magnetic necklace clasp

1988-08-25

1990-02-20

Cranmer, Laurie K.

Buckles, buttons, clasps, etc.

Having magnetic fastener

2482065, A44B 2100

Patent

active

049014056

ABSTRACT:
The device provides a cylindrical insert fitting easily through a retainer ring into a tubular chamber and held there by a magnetic structure. One end of a necklace is attached to a jewelry ring on the outside end of the insert and the other end is attached to a jewelry ring on the outside end of the tubular chamber. materials in the chamber wall allow special magnetic structure in the tubular chamber to pull the insert aligned near the tubular chamber opening into the chamber and secures the cylinder end against the magnetic structure. The clasp holds together well yet is easily unfastened. Special fittings for locking the clasp parts together are not required.

REFERENCES:
patent: 1105384 (1914-07-01), Topper
patent: 2615227 (1952-10-01), Hornik
patent: 2623256 (1952-12-01), Feibelman
patent: 2637887 (1953-05-01), Goodman et al.
patent: 2648884 (1953-08-01), Loofboro
patent: 2812203 (1957-11-01), Scholten
patent: 2975497 (1961-03-01), Budreck
patent: 3129477 (1964-04-01), Mizuno
patent: 3277681 (1966-10-01), Bey
patent: 4231137 (1980-11-01), Fujimoto
patent: 4455719 (1984-06-01), Morita
patent: 4622726 (1986-11-01), Nakamura
patent: 4779314 (1988-10-01), Aoki

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