WO2018163219A4

WO2018163219A4 - A circular easy-draw flat compass

Info

Publication number: WO2018163219A4
Application number: PCT/IR2018/050008
Authority: WO
Inventors: Mahmoud GHAFFARI TOUCHAEI
Original assignee: Ghaffari Touchaei Mahmoud
Priority date: 2017-03-04
Filing date: 2018-03-03
Publication date: 2018-10-25
Also published as: WO2018163219A1

Abstract

A Circular Easy-draw Flat compass is a training aid and stationery, and is used to draw a circle. The design of this compass is such that in making it the fixed and moving parts of the compass are completely removed and is created from only one circular page, and the other innovation in creating is that there is no need to measure the radius and any radials that the user wants, is specified.

Claims

AMENDED CLAIMS

received by the International Bureau on 01 October 2018 (01.10.2018)

Registration of reformations under Article 19

Hereby, all the previous claims are removed and newly reformed claims are submitted as follows:

Claim 1: The present invention is a plane compass capable of drawing circles of different radii which, according to Figure 1, contains only one circular plate and no other pieces or components are used in its building. At the center of this circular plate, a hole has been made. Such a hole the diameter of which is as big as the tip of a pencil or a pen, is used for placing the steady head of the compass which is selected by the user upon his/her desire. In addition, this steady point is the center of the circles to be drawn. On this circular plate, a number of 10 radii are plotted at equal intervals of 36 from each other (Figure 1). On each radius, holes with certain distances from the center of the circle have been created and the size of these distances is written under the holes. Similarly, the diameter of these holes is as big as the tip of a pencil or a pen and it is used for placing the moving head of the compass when drawing a circle.

Claim 2: In the current invention, several holes have been created over the drawn radii on the circular plate (Figure 1) which are as follows:

On the first radius with 5, 15, 25, 35, and 45 (mm) distances,

On the second radius with 6, 16, 26, 36, and 46 (mm) distances,

On the third radius with 7, 17, 27, 37, and 47 (mm) distances,

On the fourth radius with 8, 18, 28, 38, and 48 (mm) distances,

On the fifth radius with 9, 19, 29, 39, and 49 (mm) distances,

On the sixth radius with 1, 2, 3, 4, and 5 (cm) distances,

On the seventh radius with 11, 21, 31, and 41 (mm) distances,

On the eighth radius with 12, 22, 32, and 42 (mm) distances,

On the ninth radius with 13, 23, 33, and 43 (mm) distances, and

On the tenth radius with 14, 24, 34, and 44 (mm) distances.

8 A number of holes (from 5 mm to 5 cm distances) exist from the center of the plate of this circular plate in a certain order.

This is due to the issue that here, the aim was to build a sample of this instrument with a capability to function in this range.

Claim 3: According to claims 1 and 2, the present invention allows the user to find the desired radius from the instrument without a need to measure the radius from the two steady and moving heads by the ruler.

Claim 4: According to claims 1 and 2, this invention allows the user to select each of the steady and moving pivots arbitrarily without a need to connect these two pivots to one another. Besides, the user can place the steady heads on central hole of the plate and moving heads on radius hole of the plate and draw circle by rotating the moving pivot around the steady pivot.

Claim 5: This invention can be made by different materials such as Plex, talc, mold, and etc. It can also be made of different dimensions and precisions as required.

9