Parker Hannifin Corporation, originally Parker Appliance Company, usually referred to as just Parker, is an American corporation specializing in motion and control technologies. Its corporate headquarters are in Mayfield Heights, Ohio, in Greater Cleveland . The company was founded in 1918, and has been publicly traded on the NYSE since December 9, 1964. Parker Hannifin is one of the largest companies in the world in motion control technologies, including aerospace, climate control, electromechanical, filtration, fluid and gas handling, hydraulics, pneumatics, process control, and sealing and shielding. Parker employs about 58,000 people globally.The company is ranked 211 in the Fortune 500. Wikipedia.
Parker Hannifin | Date: 2015-04-07
A reverse-osmosis separator module includes a pre-formed shell housing having a longitudinal axis extending between opposite ends and defining an inner chamber. A reverse-osmosis separator element is telescopically disposed in the inner chamber, and includes a permeate tube extending along the longitudinal axis and a membrane construction spirally wound around the permeate tube. An end cap is located at each end of the pre-formed shell housing.
Parker Hannifin | Date: 2015-01-28
Parker Hannifin | Date: 2015-04-14
A hydrostatic transmission system includes a pump including a rotatable swash plate, wherein rotation of the swashplate effects a change in volumetric displacement of the pump. An actuator is coupled to the swashplate, the actuator operative to effect rotation of the swashplate to change the volumetric displacement of the pump. An electronic controller is operatively coupled to the actuator, the electronic controller configured to command the actuator to effect rotation of the swashplate.
Parker Hannifin | Date: 2015-08-18
A control valve includes a valve housing, a plurality of valves located within the valve housing, and a moveable member that is configured to move within the housing, the moveable member including a plurality of cam extensions. As the moveable member moves (e.g., rotates), the cam extensions interact against the valves to open and close the valves in a prescribed order. The control valve may be controlled to inflate a zoned object. The valves may include at least two zone valves for communicating pressurized air into the object, and a vent valve for venting the object via the zone valves. At any given position of the moveable member, the cam extensions are positioned to one of: opening one of the zone valves, opening one of the zone valves and the vent valve, or maintaining all of the valves closed. The rotating member may be a cylindrical cam shaft with radially extending cams.
Parker Hannifin | Date: 2015-12-09
A torque nut with an axially deformable projection protruding from the axially inner end face of the torque nut. The torque nut may be assembled as part of a compression fitting including one or more ferrules for engaging a tube held within the torque nut and a fitting body onto which the torque nut can be threaded. The axially deformable projection will engage an opposing face on the fitting body and this allows a person tightening the torque nut to to feel when the torque nut is madeup to prevent undermaking or overmaking the torque nut. When the axially deformable projection engages the fitting body, there will be an abrupt increase in torque needed to tighten the torque nut on the fitting body after only partial axial deformation of the axially deformable projection relative to the axially inner end face of the torque nut.