Abstract: A hydraulic punch driver which includes a hydraulic pump section a hydraulic ram section, and a hydraulic hose which connects these two sections together. Because the hydraulic hose is flexible, the operator is able to manipulate the ram section such that it can be positioned at an angle relative to the pump section; a hose guard can be provided on the hose to protect the hose and to prevent overflexing of the hose. Such flexibleness allows the operator to use the punch driver in virtually any position such that the ram can operate as necessary and the operator can operate the pump handle, regardless of the environmental conditions of the place of use. The pump section also includes a coupler which allows a handle thereof to swivel 360 degrees to further allow the operator to grip and actuate the pump handle with maximum comfort.

Abstract: A novel adjustment assembly for use with a hydraulic control apparatus. The hydraulic control apparatus is attached to a hydraulically operated tool to provide a desired hydraulically powered function. The present invention allows the hydraulic control apparatus to be used with either a constant volume (open-center) hydraulic system or constant pressure (closed-center) hydraulic power system. The novel adjustment assembly of the present invention provides a structure which can be configured to force open shuttle spool valves in the control apparatus in a neutral condition for use with a constant volume power supply. The adjustment assembly can also be configured to be disengaged from the shuttle spool valves in a neutral condition for use with a constant pressure hydraulic power system. Operation of the adjustment assembly is made using standard tools and without disassembly of the control apparatus.