US 12,128,517 B2
Automatic dispensing device
Moises Caballero, Barcelona (ES); Andrew Johnson, Hull (GB); and Sergio Luque, Barcelona (ES)
Assigned to Reckitt & Colman (Overseas) Hygiene Home Limited, Slough (GB)
Appl. No. 17/776,697
Filed by Reckitt & Colman (Overseas) Hygiene Home Limited, Slough (GB)
PCT Filed Dec. 4, 2020, PCT No. PCT/GB2020/053111
§ 371(c)(1), (2) Date May 13, 2022,
PCT Pub. No. WO2021/111146, PCT Pub. Date Jun. 10, 2021.
Claims priority of application No. 1917820 (GB), filed on Dec. 5, 2019.
Prior Publication US 2022/0395946 A1, Dec. 15, 2022
Int. Cl. B23Q 3/154 (2006.01); H01F 7/04 (2006.01); H01F 7/20 (2006.01)
CPC B23Q 3/1546 (2013.01) [H01F 7/04 (2013.01); H01F 2007/208 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An automatic dispensing device operable in dispensing a volatile substance, the device comprising:
a fan configured to generate airflow and dispense the volatile substance from the device;
a drive apparatus having at least one electromagnetic coil connected to a drive circuit;
wherein the fan comprises at least one magnet located along an arc of the fan and the electromagnetic coil is configured to attract or repel the at least one magnet;
wherein the drive circuit is configured to switch the current direction in the electromagnetic coil to sequentially attract and then repel the at least one magnet as the fan rotates.