Closure-sensitive signalling device with cantilever switch

A closure-sensitive signalling device responsive to the opening of a folded article having first and second panels foldable with respect to each other along a fold line, comprising:

• a low-profile printed circuit board having a top surface and a bottom surface and adapted to have said bottom surface secured to said first panel with one end of said board adjacent to said fold line;
• a battery-powered signal generator IC mounted on said top surface of said board;
• means for generating a humanly perceptible signal in response to a signal from said signal generator IC;
• and
• a cantilever switch mounted on said one end of said board and electrically connected to said signal generator IC, said cantilever switch including
• a stationary electrical contact mounted on said board;
• a conductive cantilever arm engageable with said stationary contact, said cantilever arm having one end secured to said board and a free end which is engageable with said second panel when said board is mounted on said first panel with said one end adjacent to said fold line;
• and
• spring means including a coil spring integrally formed with said cantilever arm for biasing said cantilever arm toward said stationary contact.

A closure-sensitive signalling device responsive to the opening of a folded article having first and second panels foldable with respect to each other along a fold line, comprising:

• a low-profile printed circuit board having a top surface and a bottom surface and adapted to have said bottom surface secured to said first panel with one end of said board adjacent to said fold line;
• a battery-powered signal generator IC mounted on said top surface of said board;
• means for generating a humanly perceptible signal in response to a signal from said signal generator IC;
• and
• a cantilever switch mounted on said one end of said board and electrically connected to said sound generator IC, said cantilever switch including
• a stationary electrical contact mounted on said board;
• and
• a conductive cantilever arm of spring wire engageable with said stationary contact, said cantilever arm having one end secured to said board and a free end which is engageable with said second panel when said board is mounted on said first panel with said one end adjacent to said fold line.

A closure-sensitive signalling device responsive to the opening of a folded article having first and second panels foldable with respect to each other along a fold line, comprising:

• a low-profile printed circuit board adapted for mounting on said first panel with one end of said board adjacent to said fold line;
• a battery-powered signal generator IC mounted on said printed circuit board;
• means for generating a humanly perceptible signal in response to a signal from said signal generator IC;
• and
• a cantilever switch mounted on said one end of said printed circuit board and electrically connected to said signal generator IC, said cantilever switch including
• a stationary electrical contact fixed in place on said printed circuit board;
• and
• a conductive cantilever arm engageable with said stationary contact, said cantilever arm having one end secured at more than one point on e surface of said printed circuit board, said cantilever arm further having a free end which is engageable with said second panel when said printed circuit board is mounted on said first panel with said one end adjacent to said fold line.