US 12,285,050 B2
Resonant circuit for an aerosol generating system
Terrence Milligan, Madison, WI (US); Thomas Paul Blandino, Madison, WI (US); Anton Korus, London (GB); Patrick Moloney, London (GB); and Walid Abi Aoun, London (GB)
Assigned to NICOVENTURES TRADING LIMITED, London (GB)
Appl. No. 17/250,741
Filed by NICOVENTURES TRADING LIMITED, London (GB)
PCT Filed Aug. 30, 2019, PCT No. PCT/US2019/049076
§ 371(c)(1), (2) Date Feb. 26, 2021,
PCT Pub. No. WO2020/047417, PCT Pub. Date Mar. 5, 2020.
Claims priority of application No. 1814202 (GB), filed on Aug. 31, 2018.
Prior Publication US 2021/0186109 A1, Jun. 24, 2021
Int. Cl. A24F 40/465 (2020.01); A24F 40/53 (2020.01); A24F 40/57 (2020.01); H05B 6/10 (2006.01)
CPC A24F 40/465 (2020.01) [A24F 40/53 (2020.01); A24F 40/57 (2020.01); H05B 6/108 (2013.01)] 29 Claims
OG exemplary drawing
 
1. An aerosol generating device comprising:
a resonant circuit for heating an aerosol generating material, the resonant circuit comprising:
an inductive element for inductively heating a susceptor arrangement to heat the aerosol generating material to thereby generate an aerosol, and
a switching arrangement that, in use, alternates between a first state and a second state to enable a varying current to be generated from a DC voltage supply and flow through the inductive element to cause inductive heating of the susceptor arrangement;
wherein the switching arrangement is configured to alternate between the first state and the second state in response to voltage oscillations within the resonant circuit which operate at a resonant frequency of the resonant circuit, whereby the varying current is maintained at the resonant frequency of the resonant circuit;
the switching arrangement comprises a first transistor and a second transistor, and wherein, when the switching arrangement is in the first state the first transistor is OFF and the second transistor is ON and when the switching arrangement is in the second state the first transistor is ON and the second transistor is OFF; and
the first transistor and the second transistor each comprise a first terminal for turning that transistor ON and OFF, a second terminal and a third terminal, and wherein the circuit further comprises a third transistor and a fourth transistor, and wherein the first terminal of the first transistor is connected to the second terminal of the second transistor via the third transistor and the first terminal of the second transistor is connected to the second terminal of the first transistor via the fourth transistor.