Abstract: A child safety door latch system includes interchangeable pushbutton compression springs of varying tensions proportional to selected values of thumb opposition strength. A pair is selected for a predetermined age group. A pair of handles each contain one of the selected pair of compression springs and a pushbutton. A latch includes a latch compression spring and a latch slider. A master connector is coupled to the latch slider. In a locked mode, the selected pair of compression springs cooperate with the latch compression spring such that the latch protrudes from the latch sleeve, holding the door locked.

Abstract: A child safety door latch system includes interchangeable pushbutton compression springs of varying tensions proportional to selected values of thumb opposition strength. A pair is selected for a predetermined age group. A pair of handles each contain one of the selected pair of compression springs and a pushbutton. A latch includes a latch compression spring and a latch slider. A master connector is coupled to the latch slider. In a locked mode, the selected pair of compression springs cooperate with the latch compression spring such that the latch protrudes from the latch sleeve, holding the door locked.

Abstract: A child safety door latch includes a pair of handles, each handle including a pushbutton biasing device. A latch is mechanically coupled to a latch biasing device. A master connector is mechanically coupled at a first end to the latch biasing device and at a second end to each of the pushbutton biasing devices. In a locked mode, the latch biasing device is biased such that the latch is disposed in a locking position. When an inwardly directed force applied to one of the pushbuttons, it mechanically translates to the master connector to create a release force component that operates on the master connector in a linear direction to retract the latch into an opening position.