US Patent 10145635 Pistol magazine loader

Magazine loaders for sequentially loading cartridges into an uppermost cartridge space of a magazine are disclosed. A magazine loader may comprise a housing including a plurality of wall portions defining a housing cavity. The wall portions may define opposing arcuate pin receiving channels. The magazine loader may also include a pin and a tool. The pin may include a starboard end and a port end. The starboard end of the pin may be disposed inside a starboard channel and the port end of the pin may be disposed inside a port channel so that translation of the pin is constrained to movement along a path defined by the channels. An intermediate portion of the pin may extend through the bore defined by a central portion of the tool so that the tool is supported by the pin and the tool follows the path defined by the channels.