SCREW MOTOR Russian patent published in 2018 - IPC B62D57/36 A01G5/06 

FIELD: machine building.

SUBSTANCE: invention relates to transport engineering and can be used as a propulsor in wheelchairs to overcome staircases of common use. Screw propeller contains a cylindrical rotor with a screw crest. Screw ridge is made in the form of a chain consisting of axially connected rollers mounted on a cylindrical rotor, plate-like links with ears and stops cooperating with adjacent links. Each of the abutments is in the form of a cross member connecting the ends of the two platelets of the link, having an opening for the roller bearing mounted on the cross member.

EFFECT: expansion of functional capabilities of screw propeller when moving on hard surfaces is achieved, as well as overcoming staircases of common use.

1 cl, 1 dwg