US 12,225,988 B2
Magnetic jewelry clasp
William Stuart Duncan, Georgetown, SC (US); and Beeman E. Burgoon, Jr., Georgetown, SC (US)
Filed by William Stuart Duncan, Georgetown, SC (US); and Beeman E. Burgoon, Jr., Georgetown, SC (US)
Filed on Jul. 31, 2023, as Appl. No. 18/362,215.
Application 18/362,215 is a continuation of application No. 17/389,816, filed on Jul. 30, 2021, granted, now 11,737,527.
Application 17/389,816 is a continuation of application No. 16/515,088, filed on Jul. 18, 2019, granted, now 11,076,661, issued on Aug. 3, 2021.
Application 16/515,088 is a continuation of application No. 16/044,700, filed on Jul. 25, 2018, granted, now 10,376,022, issued on Aug. 13, 2019.
Claims priority of provisional application 62/538,143, filed on Jul. 28, 2017.
Prior Publication US 2024/0016263 A1, Jan. 18, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. A44C 5/20 (2006.01); H01F 7/02 (2006.01)
CPC A44C 5/2071 (2013.01) [H01F 7/0263 (2013.01); A44D 2203/00 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A jewelry clasp comprising:
a first part including a first groove, a first catch and a first ring segment; and
a second part including a second groove that receives the first catch, a second catch that is received within the first groove and a second ring segment;
at least one magnet generating an attractive force holding the first part to the second part; and
at least one contact point between the first part and the second part that is configured to prevent unintended dislodging of the first part from the second part by limiting a spacing relative to the at least one magnet to a distance where a magnetic force generated by the at least one magnet is sufficient to pull the first part and the second part back to a coupled position, wherein the at least one magnet comprises a first magnet disposed in the first part and second magnet disposed in the second part and the second groove is on a side of the second magnet opposite the second catch.