Patent ID: 9220191
Filing Date: 2015-12-29
Classification: A01C,B05B

Abstract:
1. A chemical dispensing apparatus for use in delivery of a treatment solution to a lawn, the apparatus comprising: a main fluid supply passage configured for connection to a pipe system carrying water under pressure; a housing including first and second discharge ports; a fluid discharge passage; a discharge control valve connecting said fluid discharge passage to said first discharge port and said second discharge port, said discharge control valve operates to selectively permit a flow of fluid or preclude the flow of fluid from said fluid discharge passage to either said first discharge port or said second discharge port; an internal fluid supply passage connecting said main fluid supply and said fluid discharge passage; a supply control valve connecting said internal fluid supply passage and said main fluid supply passage, said supply control valve operates to selectively permit the flow of fluid or preclude the flow of fluid from said main supply passage to said internal fluid supply passage; a liquid chemical dispenser configured to dispense a chemical into the flow of fluid through said internal fluid supply passage; wherein said main fluid supply passage, said fluid discharge passage, and said internal fluid supply passage are contained by said housing; wherein said discharge control valve, said supply control valve, and said liquid chemical dispenser are supported and carried by said housing; a bypass passage connecting said main fluid supply passage to said fluid discharge passage; a flap valve operable to connect said fluid discharge passage and said internal fluid supply passage and to seal said bypass passage from said discharge passage when a fluid flows through said internal fluid supply passage or to connect said bypass passage to said fluid discharge passage and to seal said internal fluid supply passage from said bypass passage when the fluid flows through said bypass passage; and wherein said supply control valve further connects said bypass passage and said main fluid supply passage, and further operates to selectively permit the flow of fluid or preclude the flow of fluid from said main supply passage to either of said internal fluid supply passage and said bypass passage.