Patent No. US11161555 (titled "Tailgate Deactivation System") was filed by Banks Morrison Innovations Llc on Mar 12, 2020.
’555 is related to the field of vehicle accessories, specifically addressing the problem of damage to multi-panel tailgates when a towing apparatus is attached. Modern pickup trucks often feature tailgates with independently pivoting sections. When a trailer hitch is installed, the lower section of the tailgate can collide with the hitch during opening, leading to damage.
The underlying idea behind ’555 is to automatically disable the power circuit controlling the movement of the inner tailgate panel when a towing apparatus is connected . This prevents the inner panel from inadvertently pivoting downwards and colliding with the hitch. The system uses a switch integrated with the hitch receiver to detect the presence of a towing apparatus.
The claims of ’555 focus on a switch with two terminals that connect to the tailgate power circuit. The switch includes an actuator that can electrically couple or decouple the terminals. The actuator is designed to transition the switch to an off state, cutting power to the tailgate, when a hitch pin is inserted to secure a towing apparatus.
In practice, the system involves mounting a switch near the hitch receiver tube. The switch's actuator is positioned such that inserting the hitch pin, which secures the ball mount, physically triggers the switch. This breaks the electrical circuit that controls the inner tailgate panel's movement, preventing it from being lowered when the trailer hitch is in use. An alternative embodiment uses a manually operated push-button switch.
This design differs from prior solutions by providing an automated or easily accessible manual method for disabling the inner tailgate panel. Instead of relying on the user to remember to manually disable the tailgate, the system integrates the deactivation with the hitching process. The mechanical linkage between the hitch pin and the switch actuator ensures that the tailgate is disabled whenever a towing apparatus is properly installed, preventing accidental damage.
In the late 2010s when ’555 was filed, at a time when vehicle tailgates were commonly implemented with mechanical linkages and electrical circuits to control their opening and closing, systems commonly relied on physical switches and sensors to detect the tailgate's position and prevent damage. When hardware or software constraints made complex control algorithms non-trivial, vehicle manufacturers often used simpler, more robust designs for tailgate operation.
The examiner approved the claims because the prior art, specifically Kishino et al. (2019/0226263), did not disclose the specific combination of components recited in the independent claims. This combination includes an actuator with an actuation surface configured to electrically couple two terminals in an on state to allow power to flow in the tailgate power circuit, and to electrically decouple the terminals in an off state to inhibit power flow. Furthermore, the actuation surface is configured to transition the switch between states in response to a hitch pin being installed in the hitch receiver tube.
This patent contains 19 claims, with claims 1, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, and 19 being independent. The independent claims generally focus on a tailgate deactivation system that uses a switch with an actuator to control power to the tailgate, often in relation to a hitch receiver tube and hitch pin. The dependent claims generally elaborate on the features and configurations of the tailgate deactivation system described in the independent claims.
Definitions of key terms used in the patent claims.

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