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compasses

A technology of compasses and compasses legs, which is applied to circular curve plotters, printing, writing utensils, etc., which can solve the problems of large packaging and achieve high precision, convenience and operability

Inactive Publication Date: 2015-08-19
DRAW TEC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The known compasses have the following disadvantages: due to the outer dimensions a relatively large package is required

Method used

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Embodiment Construction

[0024] Figure 1 to Figure 6 The compass 1 shown in includes a compass head 2 with compass legs 3 , 4 articulated thereon and an adjustment shaft 5 mounted on the compass legs 3 , 4 . The adjusting shaft 5 has an adjusting wheel or an adjusting screw 6 , which is spherical in the exemplary embodiment shown. Extending from the adjusting screw 6 on both sides of the adjusting shaft 5 are oppositely directed threaded sections, one of which has a left-handed thread and the other has a right-handed thread.

[0025] available at figure 2 Best seen in the rear view of , the adjusting shaft 5 is supported in the threaded sleeves 7,8. from image 3 and Figure 4 In the perspective view shown, it can be seen that the compass 1 has fixing screws / holding bolts 9, 10 on its front side, which are screwed into threaded sleeves 7, 8, the shaft of which clamps the adjusting shaft 5 . When the fixing screws 9,10 are tightened, the adjustment function to the compasses legs 3,4 will be blo...

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Abstract

The compass (1) has articulated legs (3, 4) provided at a compass head, where the legs are rotated with respect to a longitudinal axis of the compass. An adjustment spindle (5) is attached at one of the legs, and comprises two opposite directed threaded bushes. The legs are rotated about 90 degrees, and have square cross sections or rectangular cross sections. The legs have two pairs of opposite side surfaces, where the first pair of side surfaces has width smaller than that of the second pair of side surfaces. One of the legs is made of metal, and other leg is made of plastic.

Description

technical field [0001] The invention relates to a compass with a compass leg mounted articulated on a compass head. Background technique [0002] The known compasses have the disadvantage that a relatively large package is required due to the external dimensions. Contents of the invention [0003] It is therefore an object of the present invention to provide a compact compass for which a small package is sufficient. [0004] To achieve this object, according to the invention, in a compass of the type mentioned at the outset, the compass legs are designed to be twisted about the compass longitudinal axis. [0005] The invention is based on the recognition that the dimensions, especially the width, of the compasses can be considerably reduced if the compasses have a helically twisted compass leg. This also results in a strikingly pleasing design. [0006] Another advantage of the compasses according to the invention is that no handle groove is required. The comparatively...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B43L9/02
CPCB43L9/02B43L9/22
Inventor F·希尔比格
Owner DRAW TEC
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