Trailer Coupler Clamping Bar Locking Mechanism

The patent merges the coupler body and locking plate into a single integrated casting, eliminating the need for separate assembly of multiple components. This single-piece construction reduces device complexity while maintaining ease of manufacture through standardized casting processes, and simultaneously improves reliability by eliminating interfaces between parts that could fail or disconnect during towing.

The patent incorporates a spring-loaded clamping bar that dynamically adjusts to maintain constant contact pressure with the hitch ball. The spring mechanism automatically compensates for wear, thermal expansion, and loading variations, ensuring the hitch ball remains securely retained under all operating conditions. This dynamic retention system significantly improves reliability while the spring component can be easily manufactured using standard coil spring fabrication processes.

The patent employs a self-actuating spring-loaded clamping bar that automatically engages and maintains retention of the hitch ball without requiring external actuators, motors, or complex control systems. The spring force automatically adjusts to maintain optimal clamping pressure, and the design includes self-alignment features that ensure proper engagement. This self-service mechanism achieves high reliability through simple, passive mechanical means, avoiding the addition of complex active control systems.