Interval timer
First Claim
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1. An interval timer for indicating passage of a preselected time period for use in timing activities to be accomplished within a designated interval which comprises:
- a cylindrical outer housing having a plurality of vertical rows of spaced apart small holes, and a top and bottom;
a cylindrical inner housing sized to fit within said outer housing;
a thin flexible printed circuit board adapted to be rolled into a cylinder to fit between said inner and outer housing;
a plurality of rows of spaced apart LED'"'"'s mounted on said thin flexible PCB to correspond to said holes in said outer housing so that they will project through said holes when assembled between said inner and outer housings; and
said printed circuit board being rolled into a cylinder and positioned inside said outer housing with said LED'"'"'s extending through said holes and said cylindrical inner housing being positioned within said cylindrical printed circuit board to secure it within said outer housing;
circuit and control means mounted in said inner housing and operatively connected to said thin flexible PCB for generating a selected time interval and actuating sequentially selected LEDs in said plurality of rows of LEDs;
so as to visually indicate the time remaining in a selected time interval upon actuation of the timer.
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Abstract
An electronic interval timer in which a cylindrical shell having five rows of LEDs mounted at spaced intervals from top to bottom, formed every 72° about the circumference simulates an hourglass timer. Timer and control circuits are connected to select a desired time interval and to illuminate the LEDs and turn off successive rings in proportion to the time remaining in the selected interval at any given time after actuation. An audible buzzer is also provided as are interrupt and reset capabilities.
37 Citations
10 Claims
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1. An interval timer for indicating passage of a preselected time period for use in timing activities to be accomplished within a designated interval which comprises:
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a cylindrical outer housing having a plurality of vertical rows of spaced apart small holes, and a top and bottom; a cylindrical inner housing sized to fit within said outer housing; a thin flexible printed circuit board adapted to be rolled into a cylinder to fit between said inner and outer housing; a plurality of rows of spaced apart LED'"'"'s mounted on said thin flexible PCB to correspond to said holes in said outer housing so that they will project through said holes when assembled between said inner and outer housings; and said printed circuit board being rolled into a cylinder and positioned inside said outer housing with said LED'"'"'s extending through said holes and said cylindrical inner housing being positioned within said cylindrical printed circuit board to secure it within said outer housing; circuit and control means mounted in said inner housing and operatively connected to said thin flexible PCB for generating a selected time interval and actuating sequentially selected LEDs in said plurality of rows of LEDs; so as to visually indicate the time remaining in a selected time interval upon actuation of the timer. - View Dependent Claims (2, 3, 4)
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5. An interval timer for indicating passage of a preselected time period for use in timing activities to be accomplished within a designated interval which comprises:
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a body member, comprising a vertical, outer housing, and having an external surface and an internal space for operating components for a timer; a plurality of indicator means for indicating the percentage of elapsed time in a preselected time interval comprising at least three vertical rows of spaced apart visual annunciators evenly positioned about a perimeter of said housing so as to be visible through an angle of at least 180°
;electronic circuit means for actuating selected visual annunciators in said plurality of indicator means in a desired sequence; control means for turning said electronic circuit means on and off and for selecting a predetermined sequence of actuation; and interval selector means connected to said electronic circuit means for establishing said preselected time interval. - View Dependent Claims (6, 7, 8, 9, 10)
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Specification