US 12,225,857 B2
Air system
Matthew Koch, Clear Lake, IA (US); Matthew Koenen Koehler, Meservey, IA (US); and Daniel Wayne Shrock, Raymondville, MO (US)
Assigned to Sukup Manufacturing Co., Sheffield, IA (US)
Filed by Sukup Manufacturing Co., Sheffield, IA (US)
Filed on Oct. 25, 2023, as Appl. No. 18/494,474.
Application 18/494,474 is a continuation of application No. 16/721,147, filed on Dec. 19, 2019, granted, now 11,839,181.
Claims priority of provisional application 62/781,718, filed on Dec. 19, 2018.
Prior Publication US 2024/0074358 A1, Mar. 7, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. A01F 25/22 (2006.01); F26B 25/00 (2006.01)
CPC A01F 25/22 (2013.01) [F26B 25/009 (2013.01); F26B 2200/06 (2013.01)] 25 Claims
OG exemplary drawing
 
1. A grain handling system, comprising:
a tube;
a source of grain;
the source of grain operatively connected to the tube and configured to provide grain to the tube;
a blower motor;
the blower motor operatively connected to the tube and configured to provide pressurized air to the tube and thereby cause grain to be transported through the tube by air movement through the tube;
wherein the blower motor is configured to operate at a higher speed and at a lower speed;
a pressure relief valve;
the pressure relief valve configured to bleed air pressure from the tube when in an open position;
an actuator;
the actuator configured to control operation of the pressure relief valve;
a controller;
wherein the controller is configured to detect when a plug in the tube has occurred;
wherein when the controller detects that a plug has occurred the controller is configured to automatically begin an unplugging routine;
wherein the unplugging routine includes causing the blower motor to increase from the lower speed to the higher speed and while operating the blower motor at the higher speed moving the pressure relief valve between the open position and a closed position using the actuator thereby causing surges in air pressure in the tube.