US 12,225,895 B2
Weed control
Joe Cowan, Stafford (GB); Lee Smith, Stafford (GB); and Franck Balducchi, London (GB)
Assigned to WEEDING TECHNOLOGIES LIMITED, (GB)
Appl. No. 16/771,131
Filed by WEEDING TECHNOLOGIES LIMITED, London (GB)
PCT Filed Nov. 28, 2017, PCT No. PCT/GB2017/053587
§ 371(c)(1), (2) Date Jun. 9, 2020,
PCT Pub. No. WO2018/100362, PCT Pub. Date Jun. 7, 2018.
Claims priority of application No. 1620238 (GB), filed on Nov. 29, 2016.
Prior Publication US 2021/0169063 A1, Jun. 10, 2021
Int. Cl. A01M 21/04 (2006.01); B05B 7/00 (2006.01)
CPC A01M 21/043 (2013.01) [B05B 7/00 (2013.01); B05B 7/0018 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A vegetation control apparatus comprising:
a foam-generating device configured to generate a foam within an open-ended tube, comprising:
a vessel configured to hold a foaming agent;
a first duct configured to provide water to combine with the foaming agent to generate an aqueous solution; and
an air supply configured to flow air over the aqueous solution;
a foam-dispensing duct configured to dispense the foam, the foam-dispensing duct comprising an open-topped chute, so as to enable a coating of foam to be deposited on vegetation;
a nozzle configured to inject water with a temperature of at least 60° C. into the foam so as to contact the vegetation below or within the coating of foam; and
a second duct to supply the water to the nozzle,
wherein the apparatus comprises a second valve connected to the second duct and a first valve connected to the first duct, wherein the second valve is configured to remain open for a period of time after the first valve has closed to ensure that the water is injected into the foam after the dispensing of foam has ceased.