Patent ID: 8307525

Claim:
A hand-operated rivet setting tool, comprising: an upper handle; a lower handle; a flexible reservoir; a pump assembly, wherein the pump assembly is operationally connected to the flexible reservoir; a housing which is connected to the lower handle at its first end and houses the pump assembly and the flexible reservoir, wherein the housing fully encloses the flexible reservoir during operation of the tool; a front assembly for setting a rivet, wherein the front assembly is directly connected to the pump assembly and comprises a rivet setting mechanism enclosed by a nose tube connected to a hydraulic cylinder of the pump assembly; a lever assembly; wherein the lever assembly and at least one of the handles are operationally connected to the pump assembly; wherein the pump assembly comprises a plurality of ball valves which are positioned within the pump assembly so that the pump assembly is a capable of: i) advancing the hydraulic cylinder with the nose tube of the front assembly to set the rivet when the lever of the lever assembly is in a first position, and ii) opening a passage that permits oil to return into the flexible reservoir and the hydraulic cylinder with the nose tube to retrieve toward the housing when the lever of the lever assembly is in a second position.