US Patent 7306389 Paint cartridge edger and spreader

The spreader has a housing for receiving a first receptacle and a second receptacle. The first receptacle is a cartridge of fluid, such as paint. The second receptacle is a manifold having a secondary reservoir, a meter, and a spreading material. Paint is transferred from the first receptacle to the second receptacle via a main conduit, with a pair of pistons acting upon the main conduit between a pair of one directional check valves. The pair of pistons may be replaced by a button pump having two one way valves. The manifold is slideably engaged to the housing such that manifolds having different conduit arrangements, larger conduits, different meters, different spreading materials, and different end portions, may be used.