Class / Patent application number | Description | Number of patent applications / Date published |
092163000 | FLUID CONDUIT OR PORT IN FIXED WALL OF WORKING CHAMBER | 15 |
20080307956 | WEB-LESS VALVE PLATE - A hydraulic unit that uses first and second support structures to eliminate the use of webs within an arcuate inlet and outlet of a valve plate. Specifically, a valve plate body extends between an inner and outer diameter wherein the outer diameter in a first position is placed in close proximity to a first support structure and the inner diameter is placed in close proximity to a second support structure. Thus, stress of hydraulic fluid flowing through the arcuate inlet or outlet deflects the inner and outer diameters causing them to engage the first and second support structures such that stress is passed to the first and second support structures and the valve plate is stiffened. | 12-18-2008 |
20090199707 | Bleeding System For A Hydraulic Steering System - A hydraulic working cylinder of a steering system for a motor vehicle, wherein a piston having a piston rod is displaceably disposed in the working cylinder and the working cylinder has a working chamber into which leads at least one line connection for supply and discharge of pressurized medium. A ring is disposed in the working chamber, and a groove is provided in an inner wall of the working cylinder and is in communication with the line connection. The groove extends from the line connection to an upper region of the working chamber, and the ring closes off the groove relative to the working chamber with the exception of an upper region of the groove that is disposed adjacent to the upper region of the working chamber. | 08-13-2009 |
20100326268 | INFLATABLE EQUIPMENT STABILIZER - A method and apparatus for stabilizing a piece of equipment, especially a wind turbine blade when removed from a wind turbine tower, the method and apparatus including a stabilizer bag placed on the ground, having one or more interior inflatable cavities surrounded by a durable exterior membrane having welded seams and at least one valve for purposes of inflation and deflation. | 12-30-2010 |
20110072962 | SELF-BLEEDING DOUBLE ACTION HYDRAULIC CYLINDER - A self-bleeding hydraulic cylinder system is provided. The system includes a hydraulic cylinder with an inner wall and an outer wall. A cylinder port is located in a top region of the hydraulic cylinder. A line port is located in a bottom region of the hydraulic cylinder. A sleeve covers at least a portion of the outer wall of the hydraulic cylinder, and a channel is formed between the sleeve and the outer wall of the hydraulic cylinder. The channel extends from the cylinder port to the line port such that air within the hydraulic cylinder is pushed through the cylinder port and through the channel to the line port in response to actuation of the hydraulic cylinder. | 03-31-2011 |
20110079141 | Hydraulic cylinder that will automatically expunge air and self level - A hydraulic cylinder with piston and rod enclosed, that upon receiving air and oil, singularly or along with one or more identical cylinders, from a new, dry, system start up, will, upon extension, when the piston seal passes a predetermined point, stop. With continued pumping from either a manual single or multiple cylinder pump or an electric pump all the identical piston rods will arrive at the predetermined stop and the cylinders will be purged of air and when the manual locks are placed over the extended piston rods, they will stay there and not move up or down, regardless of ambient temperature changes or inadvertent release of the oil. After they are extended the first time all the cylinders will stop at the predetermined point in an even position with each other. The locks and pumps are not shown in this application. | 04-07-2011 |
20110138998 | AIR INTAKE PORTING FOR A TWO STROKE ENGINE - A two stroke engine of a particular configuration can have its power output increased by running bigger pistons and using ports in the piston skirt through which to conduct compressed air within the skirt through short passages in the cylinder housing that conduct the air from within the skirt to above the piston. As a result a larger piston can be used for the same spacing and opening size in the block to save the need to redesign the block and the crankshaft. A position adjuster for the piston moves it axially without rotation of the piston ports out of alignment with inlet ports in the housing. The piston rod is held in the crosshead using a flat to prevent rotation while an adjuster nut that is turned creates axial movement in the piston rod with a lock nut securing the final piston position. | 06-16-2011 |
20110239857 | PISTON PUMP - According to one embodiment, there is provide a piston pump, including: a cylinder having a bottomed cylindrical shape; a piston slidable within the cylinder, the cylinder and the piston defining a pressure chamber therebetween; a suction valve unit disposed in a suction passage of the pressure chamber; and a discharge valve unit disposed in a discharge passage of the pressure chamber, wherein the piston includes a cylindrical piston portion and a large diameter piston portion provided to cover one end of the cylindrical piston portion, and wherein the large diameter piston portion includes a working fluid guide groove extending thereinside along the axial direction of the piston. | 10-06-2011 |
20120042775 | ADJUSTABLE HYDRAULIC MASTER CYLINDER ASSEMBLIES - A master cylinder assembly includes a cylinder body, a piston member operably fitted therein, and a pressure valve assembly to establish a variable fluid output upon operation of the piston member. The cylinder body includes two or more pressure chambers to hold hydraulic fluid, each having a transfer port. The piston member includes two or more pistons respectively received in the pressure chambers, and is operable to move the pistons, in parallel, to transfer hydraulic fluid through the transfer ports. The pressure valve assembly includes a selector and is operable to direct fluid transferred through selected transfer ports out of the cylinder body through an outlet port by means of a movable valve member that establishes a passageway communicating the selected transfer ports with the outlet port. A pivot adjustment mechanism allows adjustment of the lever's mechanical advantage, and a stroke adjustment mechanism allows adjustment of the lever's rest position. | 02-23-2012 |
20120118139 | DUAL-CHAMBER CARPULE - The invention relates to a dual-chamber carpule having a first partial cylinder comprising a sealing cap, a bypass, and an intermediate stopper, an optional sealing element, and a second partial cylinder comprising an end stopper and, optionally, a stop, an axial groove, and an additional intermediate stopper; the invention further relates to a method for producing and filling said dual-chamber carpule. | 05-17-2012 |
20120325082 | FLUID CYLINDER MECHANISM - A fluid cylinder mechanism ( | 12-27-2012 |
20130180397 | HYDRAULIC DEVICE OF A CONTROL DEVICE, SUCH AS A BLADE PITCH-CHANGE DEVICE - A hydraulic device includes a body, a piston rod configured to be actuated by a pressurised hydraulic fluid, and a first drainage channel for externally draining an internal leakage of hydraulic fluid in the device. The device includes a second drainage channel for externally draining the internal leakage of hydraulic fluid in the device, the first and second channels being oriented in two different directions and each of the channels communicating at one of the ends thereof inside the body of the device. | 07-18-2013 |
20140013938 | SHAFT SEALING DEVICE AND VALVE STRUCTURE USING THE SAME - A shaft sealing device switches a sealing state and an unsealing state of a fluid, with high sealing performance maintained, because no abrasion accompanies movement of a sealing material or a sealing member, enabling feeding a fluid at a predetermined flow rate, and adjusts the expanding rate of the sealing material with the quantity of an external electric signal and accordingly adjusts the contact face pressure to enable controlling the amount of leakage of the fluid highly precisely, so that it can be used for all applications. The shaft sealing device includes a shaft sealing body formed of a macromolecular material and made expansible or contractible, or deformable, through external electrostimuli applied to a shaft sealing portion disposed in a device body, and flow passages disposed in the shaft sealing portion for feeding the fluid leaked due to the expansion or contraction, or the deformation, of the shaft sealing body. | 01-16-2014 |
20150308466 | DOUBLE ACTING FLUIDIC CYLINDER FOR MATERIAL HANDLING - A dual action cylinder for a robotic arm comprises a hollow cylinder having a front end and a rear end enclosing a chamber within. A rod and piston are reciprocatingly movable within the chamber and with a tip of the rod protruding through the front end of the cylinder. A passageway extends through the dual acting cylinder from the rear end to the protruding tip of the rod. Wherein the passageway provides open communication between the tip and the rear end, and changes length along the direction of reciprocation as the rod and piston move. | 10-29-2015 |
092164000 | Port in separable chamber end closure | 2 |
20110277625 | PISTON AIR COMPRESSOR - A piston air compressor having a suction chamber and a connection chamber separated from the suction chamber. An air channel is provided from the connection chamber to the suction chamber. | 11-17-2011 |
20110283879 | Hydraulic Leveling Cylinder - An anodized aluminum hydraulic leveling cylinder | 11-24-2011 |