The present invention pertains to a trailer jack apparatus designed to facilitate the support and maneuvering of trailers. Specifically, the invention introduces a trailer jack equipped with a high-strength ball bearing at the point of ground contact, enha...

A protective device formed by a cover that can cover an end face of a stand pipe (3) of a hand crank support (1) that can be fastened to a trailer, and to which a U-shaped arm (10) in cross-section adjoins, which is provided with at least one locking eleme...