US 12,439,993 B2
Fastening device, combination of fastening device, functional unit and receiving unit, and combination of a head-protective gear with such a fastening device
Avram Kushnirov, Barkan (IL); Dov Brecher, Givat Shmuel (IL); Boaz Levi, Binyamina (IL); and Shmuel Debby, Hod Hasharon (IL)
Assigned to Cardo Systems, Ltd., Ra'anana (IL)
Appl. No. 18/035,605
Filed by Cardo Systems, Ltd., Ra'anana (IL)
PCT Filed Nov. 4, 2021, PCT No. PCT/IB2021/060221
§ 371(c)(1), (2) Date May 5, 2023,
PCT Pub. No. WO2022/097063, PCT Pub. Date May 12, 2022.
Claims priority of application No. PCT/IB2020/060404 (WO), filed on Nov. 5, 2020.
Prior Publication US 2023/0404200 A1, Dec. 21, 2023
Int. Cl. A42B 3/08 (2006.01); A42B 3/30 (2006.01); F16B 1/00 (2006.01)
CPC A42B 3/30 (2013.01) [A42B 3/08 (2013.01); F16B 1/00 (2013.01); F16B 2200/83 (2023.08)] 22 Claims
OG exemplary drawing
 
1. A fastening device for releasably fastening a functional unit in a connection direction to a receiving unit, comprising:
a functional unit comprising a functional unit abutment surface, wherein the functional unit comprises a housing and a functional device within the housing;
a receiving unit comprising a receiving unit abutment surface;
wherein the functional unit abutment surface and the receiving unit abutment surface are configured to abut against each other in a connected state; and
at least two pairs of magnets comprising:
at least a first functional unit magnet and a second functional unit magnet allocated at or within a proximity to the functional unit abutment surface, and
at least a second receiving unit magnet a second receiving unit magnet allocated at or within a proximity to the receiving unit abutment surface,
wherein the first functional unit magnet and the first receiving unit magnet exert an attractive force to each other and the second functional unit magnet and the second receiving unit magnet exert an attractive force to each other.