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Alignment apparatus

A device and area technology that can be used in sports accessories, measuring devices, ski bindings, etc., to solve problems such as inaccurate marking

Inactive Publication Date: 2008-09-03
FLEET LINE MARKERS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is not uncommon for playing field lines to be drawn somewhat imprecisely, and more particularly when the playing field has multiple goalposts etc. along a line, it is also not uncommon for the connecting line of the goalposts etc. to not coincide with the ideal line to be drawn

Method used

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  • Alignment apparatus
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] The first alignment means shown in Figures 1 and 2 comprise a plate 1 of suitable material, such as card or metal, eg aluminium, with a reflective surface. There are some non-reflective marks on the reflective surface, such as black marks. As shown in the figure, these marks are in the form of a lower vertical bar 3 having a predetermined width and extending upwards approximately to the middle of the reflective surface, and two upper vertical bars 5 of a predetermined width, for example slightly wider than the lower bar 3, and The distance of the transverse spacing is approximately equal to the width of the lower strip 3 . The height of the upper bar is such that it extends down approximately to the middle of the reflective surface. Ideally there is a small gap between the upper end of the lower bar 3 and the lower end of the upper bar 5 .

[0022] The reflective surface of the panel 1 is provided with a cover 7 extending at right angles from the reflective surface so...

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PUM

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Abstract

An alignment apparatus includes first and second alignment devices (1) and means (9) for mounting each of the first and second alignment devices in spaced relationship one behind the other and such that one alignment device is at a higher level than the other alignment device. Each alignment device (1) includes a plate member having a surface comprising at least one area of reflective material and at least one area (3, 5) of non-reflective material. The areas of reflective material and of non-reflective material are configured such that, when an elongate vertical beam of electromagnetic radiation is incident on both of the first and second alignment devices, the pattern of reflected radiation in the plane of the beam varies according to whether the reflective areas of both of the first and second alignment devices are parallel to each other and perpendicular to the beam.

Description

technical field [0001] The present invention relates to an alignment device, which can be used, for example, to determine the direction of a scribe line. Background technique [0002] When drawing lines, such as on sports fields and other surfaces, it is generally considered desirable to draw adjoining lines of rectangular fields at 90° to each other. However, it is not uncommon for playing field lines to be drawn somewhat imprecisely, and more particularly when the playing field has multiple goalposts etc. along a line, it is also not uncommon for the connecting line of the goalposts etc. to not coincide with the ideal line to be drawn . In these cases, for aesthetic and game reasons, it is often preferable to draw lines along the lines connecting goalposts etc. rather than drawing ideal lines. Contents of the invention [0003] It is thus an object of the present invention to provide a device which overcomes or at least improves the above-mentioned problems, for exampl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A63C19/06G01C15/00
CPCA63C19/06G01C15/00
Inventor 伊恩·P·麦格菲
Owner FLEET LINE MARKERS