Patent ID: 11858126
Assignee: ABB SCHWEIZ AG
Field: Handling (Mechanical engineering)
Classification: CPC B  F | IPC B

Claim 9:
10. A method for sealing a joint gap of a robot joint of a robot, wherein the robot joint comprises a first part and a second part with a relative movement in between, and the joint gap spaces the first part and the second part from each other, the robot joint further including an inflatable seal accommodated in the joint gap to provide a fluid-tight sealing of the joint, wherein the method comprises:
pressurizing the inflatable seal such that the inflatable seal expands in an axial direction towards the second part to seal the joint gap between the first part and the second part;
wherein said pressurizing the inflatable seal includes:
pressurizing the inflatable seal to a predetermined low pressure when the robot is working, and
pressurizing the inflatable seal to a predetermined high pressure when the robot is not working and/or is exposed to wash down;

wherein the predetermined high pressure is higher than the predetermined low pressure.