Gate Apparatus With Springless Automatic Return Gate

What is this patent about?

’233 is related to the field of gate apparatuses, specifically those used in homes or residences to restrict access for small children or pets. These gates are often placed in passageways like staircases or kitchen entrances. The background acknowledges the need for gates that are easy for adults to operate but difficult for children, addressing the problem that children can often manipulate conventional door handles and latches.

The underlying idea behind ’233 is to create a gate that automatically returns to a closed or nearly closed position after being opened, without relying on springs. This is achieved by designing the pivot connection between the gate and the frame such that the axis of rotation is slightly oblique, incorporating both vertical and horizontal components. This oblique axis , combined with gravity, causes the gate to swing back towards its closed position.

The claims of ’233 focus on a pressurized gate apparatus designed to be installed between two vertical surfaces without touching the floor. The gate features a barrier frame with vertical and horizontal supports, and a gate that swings open and closed. The key element is the upper pivot connection , which includes a swinging portion fixed to the gate and a receiver portion fixed to the frame. The receiver portion has a flat face oriented obliquely relative to the vertical axis of the frame, causing the gate to swing shut automatically.

In practice, the gate apparatus is installed by squeezing the frame between two walls using screw mechanisms. The oblique orientation of the pivot axis, achieved through the angled face on the receiver portion of the upper pivot connection, ensures that the gate swings back to its closed position under the influence of gravity. This design eliminates the need for springs, simplifying the mechanism and potentially increasing its reliability.

The design differentiates itself from prior art by using the oblique pivot axis to achieve automatic closing, rather than relying on springs or other mechanical devices. The dual latch mechanism, requiring simultaneous operation of upper and lower latches, further enhances child safety. The use of rectangular tubes and wood-like panels also contributes to a more aesthetically pleasing design compared to utilitarian wire gates.