Electrical transmission or interconnection systems – Switching systems – Condition responsive
Patent
1997-09-26
1999-10-26
Gaffin, Jeffrey
Electrical transmission or interconnection systems
Switching systems
Condition responsive
307125, 307139, 307141, H01H 3500
Patent
active
059734140
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention refers to a new structure and function of switching devices of the type that can be placed between an electrical outlet and a load in order to close and/or break the circuit between the outlet and the load at defined times or after occurrence of predetermined conditions.
2. Description of the Background Art
Switching timers for connection in a wall outlet or with a socket for a plug are well known. These are however cumbersome, mostly because they are provided with devices for setting of times for connection and disconnection. Electro mechanical switching timers are commonly constituted by a ring with tabs or other actuation devices which actuate a switch at times corresponding to the position of the tabs or actuation devices. In electronic switching timers, the actuation devices generally correspond to different function keys and a display.
SUMMARY OF THE INVENTION
An object of the present invention is to provide switching devices for use in a socket or with a socket for a plug type that are as compact as possible. Further, an object is to eliminate mechanical or other actuation devices which are conventionally required in similar devices to obtain a desired function and to replace such actuation devices with programmed electronic functions in order to faciliate a compact structure. A preferred embodiment of the invention does not include such external actuation devices. These and other objects are accomplished in that the device according to the invention has been provided with a structure and functions according to that will be described in more detail as follows.
Further scope of applicability of the present invention will become apparent from the detailed description given hereinafter. However, it should be understood that the detailed description and specific examples, while indicating preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will now be described with reference to subsequent drawings, which are given by way of illustration only, and thus are not limitative of the present invention, and wherein:
FIG. 1 shows the structure of an embodiment of a device according to the invention.
FIG. 2 diagrammatically shows an example of a block diagram of a device according to the invention.
FIG. 3 shows an example of an algorithm which can be used in a program for calculation when dawn and dusk occur.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
On a circuit board 1 or a similar device in the form of a disc two male connectors 2 protrude perpendicularly from one side. From the opposite side of the circuit board 1 two female connectors 3 protrude perpendicularly in a corresponding manner. The disc or the circuit board 1 is intended to support components 4 on one or both sides. Preferably the female and male connectors are centered about the same axis but are rotated about the axis at substantially right angles in relation to each other whereby ingoing and outgoing parts under tension of the board are located at maximum distance from each other with smallest possible board size.
As an alternative embodiment (not shown) one or both of the male connectors or the female connectors are replaced with other connectors placed on corresponding locations on the board.
All or the main part of circuits 4 which are necessary for the operation of the switching device are placed on the circuit board 1, on one or both sides thereof. A housing around the device connects near the board 1, but with space for components at the side with the male connectors 2, and forms a plug connector. At the other side of the device the housing completely surrounds the female connectors 3 and forms a conventional socket side, whereby within the housing there is also space for components protruding further outward
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patent: 5598039 (1997-01-01), Weber
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Easy-Living Aktiebolag
Gaffin Jeffrey
Kaplan Jonathan S.
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