SAFETY DOOR, DOOR LOCK AND DOOR LOCK RELEASE MECHANISM
First Claim
1. A safety door, door lock and door lock release mechanism for preventing a child from opening the door while allowing an adult to do so, said safety door, door lock and door lock release mechanism comprising:
- a door having first and second sides disposed in a door way between two areas for allowing access to and/or egress from one of said two areas to a second of said two areas, a door lock for preventing said door from being opened and a lock release mechanism for releasing said door lock so that said door may be freely opened;
a first sensing means disposed on one side of the door for sensing the weight of an individual in an area adjacent to one of said sides of said door;
a second sensing means disposed on said one side of said door for sensing the height of an individual in the area adjacent to said one side of said door;
memory means and means for inputting a first pre-selected weight and a first pre-selected height into said memory means;
means for automatically releasing said locking mechanism when said first sensing means senses a weight in excess of a first pre-selected weight and/or said second sensing means senses a height in excess of said first pre-selected height;
a first alarm and means for activating said first alarm when an individual with a weight less than the first pre-selected weight or a height less than the first pre-selected height attempts to open the door; and
means for sensing a dangerous condition and means for releasing said locking mechanism when a dangerous condition is sensed and activating an alarm to thereby indicate the dangerous condition.
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Accused Products
Abstract
A safety door, door lock and door lock release mechanism for preventing a child from opening a door while permitting an adult to do so includes a weight sensor and a height sensor for unlocking a locked door. An alarm is used to indicate a child'"'"'s attempt to open the door and a sensor for sensing a dangerous condition such as smoke or carbon monoxide is also provided for unlocking the door in the event of a dangerous condition and activating a more discernable alarm at that time.
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Citations
14 Claims
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1. A safety door, door lock and door lock release mechanism for preventing a child from opening the door while allowing an adult to do so, said safety door, door lock and door lock release mechanism comprising:
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a door having first and second sides disposed in a door way between two areas for allowing access to and/or egress from one of said two areas to a second of said two areas, a door lock for preventing said door from being opened and a lock release mechanism for releasing said door lock so that said door may be freely opened; a first sensing means disposed on one side of the door for sensing the weight of an individual in an area adjacent to one of said sides of said door; a second sensing means disposed on said one side of said door for sensing the height of an individual in the area adjacent to said one side of said door; memory means and means for inputting a first pre-selected weight and a first pre-selected height into said memory means; means for automatically releasing said locking mechanism when said first sensing means senses a weight in excess of a first pre-selected weight and/or said second sensing means senses a height in excess of said first pre-selected height; a first alarm and means for activating said first alarm when an individual with a weight less than the first pre-selected weight or a height less than the first pre-selected height attempts to open the door; and means for sensing a dangerous condition and means for releasing said locking mechanism when a dangerous condition is sensed and activating an alarm to thereby indicate the dangerous condition. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A safety door, door lock and door lock release mechanism according to claim 15 that includes a Light Dependent Resistor (LDR) for actuating the lock release mechanism
Specification