Abstract: A transfer device used on recovery vehicles, having a cylinder for reversibly moving an object, such as a disabled vehicle, in horizontal or inclined translation over a travel distance substantially larger than that of the cylinder.

Abstract: A nitriding process and nitriding furnace therefor wherein the parts to be treated are maintained at floating potentional in a vacuum furnace (9), current being provided to a metal screen (5) cathode surrounding the parts to be treated, the necessary heat being provided by radiation from screen (5) whereby nitriding gas is injected into the furnace such that it has to flow through screen (5) where the plasma necessary for the nitriding reaction is generated by glow discharge the plasma flowing around and reacting with the parts to be treated before it is evacuated at the bottom of furnace (9) through vacuum/exhaust conduit (2).

Abstract: A see-saw motion loading device for a loading platform makes use of an auxiliary chassis installable on the frame of a vehicle carrier. At least one see-saw motion rocking member cooperates with a fixed base, and preferably also with a base movable towards and away from the fixed base. A device, such as a hydraulic jack or the like is provided for opening and closing of the see-saw motion rocking member.