Abstract: An operating table with a table top comprising a head section, a back section, a kidney elevator section, a seat section and a leg section, mounted on a base for being raised and lowered relative to the base, slid endwise relative to the base for X-Ray or C-arm examination of a patient on the table, and tilted endwise and laterally relative to the base, the table having controls at its head end, the back section being adjustable to act either as a back or leg support and the leg section being adjustable to act either as a leg or back support for placing a patient in a sitting position with the patient's head either at the head end or foot end of the table.

Abstract: This valve actuator is primarily intended for use with rotary cut-off valves. It includes a housing which is attached to the valve body for receiving the valve stem and a longitudinal passage slidably mounting opposed piston elements. The piston elements include spaced shoulders which engage the remote end of a radial arm mounted within the housing and attached to the stem for rotating said stem. The radial arm includes a cam at the remote end having opposed cam faces alternately engaged by the piston elements and configurated to provide a minimum gap between the cam and the piston shoulders during the rotation of the valve between open and closed positions.

Abstract: A unitary pilot-operated bi-directional cylinder lock valve and pressure-compensated flow control valve arrangement, having a common housing with internal porting connecting a pair of oppositely acting normally closed check valves operated to open by fluid pressure in one direction thereagainst on the inlet side and by a common free-floating inlet-pressure-responsive pilot piston therebetween. Also in the common housing and ported in line with each of the check valves are two pressure-compensated flow control valves which restrict fluid flow through the check valves as a function of flow pressure. The pressure-compensated flow control valves are also oppositely acting and each senses and acts to reduce fluid flow in response to pressure build-up in an opposite direction from that of the other.

Abstract: A hydraulic control valve arrangement for operating tables or the like, in which the table has both table top function control valves and associated hydraulic movement actuation cylinders and an elevate function valve and associated hydraulic elevation cylinder, and in which the elevate function control valve is operated by a separate control lever and is in overriding control of fluid supply pressure to the separate control lever-actuated table top function control valves, whereby either the elevate cylinder or a table top function actuation cylinder may be individually operated at one time, but not both the elevate cylinder and a table top function control cylinder, and whereby it is not necessary to switch a single control lever back and forth between elevate position and a selected table top function control position in order to selectively alternately effect elevation adjustment and a given selected table top function adjustment of the table top for desired table top positioning.