Wheeled compass

摘要

A wheeled compass including a shaft having a first portion, including a first end, and a second portion, including a second end, a control rolling member having an adjustable radius, a drawing rolling member having a radius greater than the adjustable radius, the control rolling member and the drawing rolling member being co-axially arranged on the shaft, and a drawing arm coupled to the shaft, the drawing arm being adapted to hold a drawing instrument. The wheeled compass can include a motor, in communication with the control rolling member and the drawing rolling member, adapted to move the wheeled compass. The control rolling member can include a plurality of adjustable rods/adjustable arms. The control rolling member can also include a flexible member to adjust the radius of the control rolling member to correspond to the radius of the wanted circle. The control rolling member can also include a housing.

主权项

1. A wheeled compass, comprising:
a shaft including a first portion having a first end and a second portion having a second end, the shaft having a given length; a control rolling member adapted to be coupled to the first end of the shaft, the control rolling member adapted to have a selectively adjustable radius; a drawing rolling member adapted to be coupled to the second portion of the shaft, the drawing rolling member having a given radius greater than the selectively adjustable radius of the control rolling member; at least one motor, the at least one motor being respectively coupled to the control rolling member and to the drawing rolling member, the at least one motor being adapted to move the wheeled compass to draw the circle or the portion thereof; and a drawing arm coupled to the shaft, the drawing arm being adapted to hold a drawing instrument adapted to draw on a surface, wherein the control rolling member and the drawing rolling member are co-axially arranged on the shaft, and wherein the selectively adjustable radius is of a length corresponding to a radius of a circle or a portion thereof to be drawn by the drawing instrument of the wheeled compass, the length of selectively adjustable radius being determined based on the radius of the circle or the portion thereof to be drawn, the given radius of the drawing rolling member and on the given length of the shaft.