Small-sized alarm device
First Claim
Patent Images
1. A small-sized alarm device comprising:
- a case;
a substantially U-shaped hanging member, two ends of the U-shaped hanging member being rotatably mounted to said case, the hanging member having an opening which is to be hanged on a doorknob; and
an alarm, installed in said case, for emitting an alarm sound upon detecting, via said hanging member, that a human body contacts or approaches said doorknob,said case comprising a fitting section into which said hanging member is fit, the fitting section provided in a given surface of said case,said hanging member being fitted into said fitting section so that the hanging member aligns with the given surface when the alarm device is carried and being rotated by about 180°
around the two ends so that the opening is erected from said case in order to hang on said doorknob, the length of said hanging member being not longer than the length of said case.
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Abstract
A small-sized alarm device is hung on a doorknob to emit an alarm sound upon detecting that a human body contacts or approaches the doorknob. The alarm device has data processor, such as a calculator and the like, in addition to an alarm and an electro-optic display for displaying data processed by the data processor and information related to the operation of the alarm. To the alarm device is rotatably mounted a hanging member for hanging the alarm device on a doorknob. The hanging member is fit into the case of the alarm device when in not use or is erected from the case when the alarm device is hung on the doorknob.
60 Citations
28 Claims
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1. A small-sized alarm device comprising:
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a case; a substantially U-shaped hanging member, two ends of the U-shaped hanging member being rotatably mounted to said case, the hanging member having an opening which is to be hanged on a doorknob; and an alarm, installed in said case, for emitting an alarm sound upon detecting, via said hanging member, that a human body contacts or approaches said doorknob, said case comprising a fitting section into which said hanging member is fit, the fitting section provided in a given surface of said case, said hanging member being fitted into said fitting section so that the hanging member aligns with the given surface when the alarm device is carried and being rotated by about 180°
around the two ends so that the opening is erected from said case in order to hang on said doorknob, the length of said hanging member being not longer than the length of said case. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A small-sized alarm device comprising:
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a case; an electrically conductive hanging member for hanging said case on a doorknob; an electrically conductive coil electrically connected to said hanging member; an alarm, installed in said case, for emitting an alarm sound upon detecting contact or approach of a human body, the alarm comprising; an oscillator circuit electrically connected to said hanging member and said coil, said oscillator circuit varying its output when a human body contacts or approaches said doorknob or said coil vibrates; a detector for detecting, via said hanging member, contact with or approach to said doorknob by a human body or the vibration of a door due to contact with said door by a human body in response to an output of said oscillator circuit; and an alarm sound emitter for emitting an alarm sound when said detector detects that a human body is contacting or approaching said doorknob or the door is vibrating; a data processor, installed in said case, for processing data; and an electro-optic display, mounted on said case, for displaying said data processed by said data processor and information relating to the operation of said alarm. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A small-sized alarm device comprising:
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a case; a keyboard mounted on said case and having a numeric keypad for entering numeric data and arithmetic function keys for entering arithmetic functions; a calculator, installed in said case, for performing calculations based on numeric data and arithmetic functions entered from said keyboard; a display, mounted on said case, for displaying the results of calculations performed by said calculator; an electrically conductive hanging member for hanging said case on a doorknob; an electrically conductive coil electrically connected to said hanging member; an oscillator circuit installed in said case and electrically connected to said hanging member and said coil, said oscillator circuit varying its output when a human body contacts or approaches said doorknob or said coil vibrates; a detector, installed in said case, for detecting, via said hanging member, contact with or approach to said doorknob by a human body or the vibration of a door due to contact with said door by a human body in response to an output of said oscillator circuit; and an alarm sound emitter, installed in said case, for emitting an alarm sound when said detector detects that a human body is contacting or approaching said doorknob or the door is vibrating. - View Dependent Claims (21, 22, 23)
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24. A small-sized alarm device comprising:
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a case; an electrically conductive hanging member for hanging said case on a doorknob; an electrically conductive coil electrically connected to said hanging member; an oscillator circuit installed in said case and electrically connected to said hanging member and said coil, said oscillator circuit varying its output when a human body contacts or approaches said doorknob or said coil vibrates; a detector, installed in said case, for detecting, via said hanging member, contact with or approach to said doorknob by a human body or the vibration of a door due to contact with said door by a human body in response to an output of said oscillator circuit; and a alarm sound emitter, installed in said case, for emitting an alarm sound when said detecting detects that a human body is contacting or approaching said doorknob or the door is vibrating. - View Dependent Claims (25, 26, 27, 28)
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Specification