Alarm activating device
OwnerAlbert F. Davisinventor
Life of this patent
Estimating the term…
Abstract
An alarm activating device is provided for closing a normally open circuit upon release of body pressure upon the rearward wall of the device, comprising a first, second, and third plate supported respectively in substantially parallel alignment behind a mounting plate, which mounting plate is adapted to be secured behind a belt in close proximity to a body, the first and third plates being spaced-apart and movable together from a position wherein one contacts the second plate, to a position where the other contacts the second plate, including means for applying constant positive pressure to the first plate opposite the second plate, and further including a first and a second contact in series circuit relationship, supported adjacent one another in alignment on the first and second plates.
Claims8
An alarm activating device comprising:
- a movable contact plate comprising a first contact and disposed in substantially parallel alignment with a fixed contact plate, which fixed contact plate supports a second contact, said fixed contact plate being stationarily secured to a mounting plate opposite said movable contact plate, and said first and said second contacts being disposed adjacent one another;
- means for applying positive pressure to said movable contact plate about its face opposite said fixed contact plate;
- a movable pressure plate disposed in substantially parallel alignment to said fixed contact plate opposite said movable contact plate;
- means maintaining a minimum spaced-apart position of said movable pressure plate and said movable contact plate;
- means allowing free movement of said movable pressure plate from a position abutting said fixed contact plate to a position spaced-apart a distance from said fixed contact plate at least equal to said minimum spaced-apart disposition of said movable pressure plate and said movable contact plate;
- and
- an electric circuit that is closed upon contact of said first and second contacts.
An alarm activating device for closing a normally open circuit upon release of body pressure upon the rearward wall of said device, comprising:
- a first, second, and third plate supported respectively in substantially parallel alignment behind a mounting plate which mounting plate is adapted to be secured behind a belt in close proximity to a body, said first and third plates being spaced-apart and movable together from a position wherein said first plate contacts said second plate to a position wherein said third plate contacts said second plate;
- means for applying constant positive pressure to said third plate opposite said second plate;
- and
- a first and a second contact in series circuit relationship supported adjacent one another in alignment on said first and second plates.
Dependencies are inferred from the claim text.