53results about How to "Reduced risk of tripping" patented technology

Disclosed is a four-foot walking stick capable of lowering stumbling risks of an old person. Four supporting feet extend out from four corners of a column foot plate outwards and include three fixed supporting feet and a movable supporting foot, and the movable supporting foot rotating around a vertical shaft on the column foot plate is arranged at the corner closest to the foot of the person and usually stops at a position butting against a retaining column under the action of a rotary spring. When the walking stick falls to the ground, because of geotropic gravity, the movable supporting foot can only move horizontally, and the walking stick can bear force from top to bottom; when the old person carries the walking stick to go forward, the foot of the old person with the body most instable kicks the movable supporting foot, at the moment, the movable supporting foot is free of ground friction, and accordingly, horizontal resistance of the movable supporting foot is insufficient to stumble the old person. Since a roller can be arranged at a grounding position of the movable supporting foot, except for time nodes when the old person is easy to stumble, when the four-foot walking stick is placed flat downwards and the old person kicks the movable supporting foot, friction force between the movable supporting foot and the ground can be decreased under the action of the roller, kicking resistance is also decreased, and further, the stumbling risks of the old person can be minimized maximally.

The invention relates to a method for operating a vehicle charging apparatus (22) for charging a vehicle battery (24). A particular line (VL1; VL2; VL3) on the decoupling point side is initially assigned to the first line (FL1; FL2; FL3) on the charging apparatus side by changing the charging current of a particular line (FL1; FL2; FL3) on the charging apparatus side and evaluating the line (VL1;VL2; VL3) on the decoupling point side in which a change can likewise be determined. This process is repeated for at least one second line (FL1; FL2; FL3) on the charging apparatus side.

The invention belongs to the technical field of machinery, relates to a test clamp, and particularly relates to a tensile strength test clamp of an automatic positioning screw. The problems that the existing test clamp is inconvenient to use and operate; the clamp needs to be replaced according to the size of a test specimen, and the test accuracy is low are solved. The tensile strength test clamp of the automatic positioning screw comprises a first connector and a second connector; a mounting seat for positioning the head part of a bolt to be tested is arranged on the first connector; a draw bar is arranged on the second connector; an adjustable clamping mechanism for positioning the nail part of the bolt to be tested is arranged between the mounting seat and the draw bar; and the adjustable clamping mechanism can be driven to lock and position the nail part of the bolt to be tested when the draw bar axially moves far away from the mounting seat. The tensile strength test clamp of the automatic positioning screw has the advantages of being reasonable in design, simple in structure, convenient to use and operate, high in test accuracy, and free of replacement of the clamping mechanism; the test cycle is shortened; and the thread stripping risk is also reduced.