Signals and indicators – Indicators – Operator movable
Patent
1996-10-07
1999-03-30
Dougherty, Elizabeth L.
Signals and indicators
Indicators
Operator movable
116318, 40449, G09F 937, G09F 930
Patent
active
058875417
DESCRIPTION:
BRIEF SUMMARY
Arrangement in manually controllable display equipment for the arresting of indicating elements provided with permanent magnets, and set to pivot about axes coincident with their median, in which arrangement there are parallel to the plane of the base plate, faces preferably of different colors, each face suitable to convey information differing from the other and set to be pivoted into alignment with the display surface of, the base plate and perpendicular to the axis of the indicating element.
We are familiar with certain kinds of display equipment using passive indicating elements--such as described in the Hungarian patent application No. 3460/91, where the indicating elements are one or other specific shape and so formed to be pivoted about an axe coincident with their median, and the angle between their two extreme rotating positions being 90 degrees. The space between these two end-surfaces is completely filled by an indicating body and the middle section or whole width of this component has been permanently magnetized. Since, due to the effects of shading, the magnetic fields arising with this design do not permit miniature forms, this kind of display element is employed only in the segments of segmented display equipment.
The indicating elements under discussion, however, are also capable of being rocked over manually for rewriting of a text, for example using a magnetic pencil. In this case, however, it is necessary to ensure that the corrections so made are maintained stable, despite the action of removing the rewriting instrument from the vicinity of the indicating elements.
The aim of the invention is to correct the shortcomings in arresting of indicating elements, and to create such arresting instruments that will adequately ensure that corrections made to information are maintained reliably.
The basis of the invention is the realization that it is possible, when setting the indicating elements manually using a magnetic instrument--for example a magnetic pencil--to achieve the setting of each in one or other extreme position with soft-iron components, preferably able to be slid in a direction perpendicular to the base plate and with solid magnetic elements to be both slid in this direction and pivoted.
The essence of the invention is: movement of the indicating elements (1), which arresting appliances arranged in the opposite side of the display surface of the base plate (5), either fitted with permanent magnets or magnetizable themselves, (1) form an acute angle with the base plate (5).
Here follows a more detailed description of this invention, with the help of different form of performance, illustrated in the accompanying drawing, in which:
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 shows arresting with soft-iron plate;
FIG. 2 shows arresting with soft-iron cylinder; and
FIG. 3 shows arresting with a sphere, provided with permanent magnet.
BEST MODE FOR CARRYING OUT THE INVENTION
The indicating element 1 of specific shape, shown in FIGS. 1-3 is prism-shaped and preferably formed to be pivoted about an axis 2 coincident with its median. One edge of the display element 1 is rounded off and those two sides of it which form the edge diagonally opposite the rounded edge form information-carrying surfaces 3a, 3b preferably of different colors. Embedded within the indicating element 1, there is a permanent magnet, the magnetic axis 4 of which forms an angle preferably of 45 degrees with the two information-carrying surfaces 3a, 3b of the indicating element 1, while being perpendicular to the axes 2 about which the indicating element 1 rocks. This axes 2 is arranged parallel with base plate 5.
In the case of manual-control, e.g. with a magnetic pencil, it is necessary for the indicating element 1 to be arrested bistably into its one or other extreme position. As seen in the forms of performance, the arresting is effected by closing the magnetic circuit with the aid of an arresting instrument.
The simplest case can be seen in FIG. 1, where the arresting instrument is a soft-iron plate 6, positio
REFERENCES:
patent: 3430170 (1969-02-01), Shatas et al.
patent: 3855959 (1974-12-01), Hinze
patent: 4457171 (1984-07-01), Gebauer
patent: 4483193 (1984-11-01), Bonetti
Jaki Laszlo
Swinea Jessie D.
Szenassy Sandor
Szidor Laszlo
Dougherty Elizabeth L.
Worth Willie Morris
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