| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 092008000 | WITH MEANS TO CONTROL FLOW OF NON-WORKING ARRESTING FLUID FOR WORKING MEMBER | 8 |
| 20090056532 | PNEUMATIC BRAKE BOOSTER - A pneumatic brake booster with a booster housing is subdivided into at least one working chamber and at least one vacuum chamber by means of at least one axially movable wall capable of being acted upon with a pneumatic differential pressure. An actuable input member includes a valve piston, with an output member for acting upon a brake master cylinder with an output force. A control valve is arranged in a control housing and can be actuated by the valve piston for controlling the differential pressure. An elastic reaction element is arranged in a control housing recess and against which the output member bears. Means for setting a distance z between the valve piston and the reaction element are provided on the output member. | 03-05-2009 |
| 20090205485 | Pneumatic retarding device - The invention concerns a pneumatic retarding device with a cylinder dividing the cylinder into a displacement chamber and a compensation chamber and including a piston with a piston rod movably supported in the cylinder and having a piston seal element wherein, upon movement of the piston, a piston movement opposing force is generated while an air leakage flow is established past the piston for damping piston movement. The piston and the piston rod are formed integrally and the piston seal element has at least two deformation zones of which one responds faster to a pressure change in the displacement chamber then the other which is subjected to the pressure change via a restrictive passage. Also, a guide system is provided with such a retarding device. | 08-20-2009 |
| 20090293714 | Continuously Blockable Locking Device - A continuously blockable locking device with a cylindrical housing forming a work chamber, a closed first end and a second end located opposite from the closed end, a piston rod which is guided out of the housing in a sealed manner through the second end so as to be arranged coaxial to the center longitudinal axis by means of a guiding and sealing device, a piston which is arranged at the end of the piston rod situated in the housing and which divides the work chamber into a first work space, through which the piston rod extends, and a second work space, and a housing which is connected to, or can be connected to, the housing and which forms a valve chamber, a first valve assembly and a second valve assembly being arranged therein. The work chamber is always completely filled with a liquid medium and the valve chamber is at least partially filled with a liquid medium. | 12-03-2009 |
| 20130340606 | CONTINUOUSLY BLOCKABLE LOCKING DEVICE - A housing having a first housing end and a second housing end, a substantially cylindrical work chamber formed in the housing, a piston which is arranged in the work chamber so as to be displaceable and which divides the work chamber into a first work space near the first housing end and a second work space near the second housing end, a piston rod which is arranged at one side of the piston and which projects through the first work space and is guided out of the work chamber in a sealed manner at the first housing end through a guiding and sealing device, and a valve chamber which is formed in the housing parallel to the work chamber and in which a first valve assembly and a second valve assembly are arranged. The work chamber is always completely filled with a liquid medium and the valve chamber is at least partially filled with a liquid medium. | 12-26-2013 |
| 20130340607 | CONTINUOUSLY BLOCKABLE LOCKING DEVICE - A continuously blockable locking device with a cylindrical housing forming a work chamber, a closed first end and a second end located opposite from the closed end, a piston rod which is guided out of the housing in a sealed manner through the second end so as to be arranged coaxial to the center longitudinal axis by means of a guiding and sealing device, a piston which is arranged at the end of the piston rod situated in the housing and which divides the work chamber into a first work space, through which the piston rod extends, and a second work space, and a housing which is connected to, or can be connected to, the housing and which forms a valve chamber, a first valve assembly and a second valve assembly being arranged therein. The work chamber is always completely filled with a liquid medium and the valve chamber is at least partially filled with a liquid medium. | 12-26-2013 |
| 092009000 | Flow control means positioned between chambers having a common wall movable with working member | 2 |
| 20110296981 | SHOCK ABSORBER - A shock absorber has an upper cylinder, a piston valve mounted on a lower end of the upper cylinder, a free piston slidably mounted in the upper cylinder and dividing the upper cylinder into an air chamber and an upper oil chamber, a lower cylinder slidably mounted around the lower end of the upper cylinder and has a lower oil chamber. Since the free piston and the air chamber are disposed in the upper cylinder, the shock absorber has a compact structure. Furthermore, when the upper and lower cylinders slide relatively, the free piston slides accordingly to regulate volume of the upper oil chamber and to provide a damping effect. The hydraulic oil in the shock absorber does not contact air and therefore no air permeates into the hydraulic oil. | 12-08-2011 |
| 20160138622 | FLUID PRESSURE CYLINDER - A fluid pressure cylinder includes: a piston rod; a cushioning chamber that decreases in capacity in accordance with extension of the fluid pressure cylinder; a communication passage that allows the cushioning chamber and an in-rod chamber to communicate with each other; a throttle passage that exerts a cushioning function by applying resistance to a flow of a working fluid from the cushioning chamber to the in-rod chamber; a check valve that is provided in a piston, allows the in-rod chamber and a driving chamber to communicate with each other, and has a checking function for permitting only a flow of the working fluid from the in-rod chamber to the driving chamber; and a pilot passage that is formed in the piston and disables the checking function by guiding a pressure in the cushioning chamber to the check valve as a pilot pressure. | 05-19-2016 |
| 092010000 | Work member position control | 1 |
| 20080236383 | POSITIONING CONTROL MECHANISM FOR SINGLE-ACTING AIR CYLINDER - An electromagnetic operation-type automatic pressure-adjusting valve outputting an air pressure corresponding to an amount of electric power is connected in an air flow path connecting a pressure chamber of a single-acting main cylinder and an air source. A controller is configured to obtain a relationship between a position of a piston and an air pressure from a relationship between the position of the piston of the main cylinder and a spring force of a return spring, and a relationship between the air pressure supplied to the pressure chamber and an acting force applied to the piston by the air pressure. When a target position of a movement of the piston is inputted to the controller, the controller is operated to move the piston toward the target position and to stop the piston at the position by means of controlling the amount of electric power for the automatic pressure-adjusting valve so that an air pressure corresponding to the target position is outputted. | 10-02-2008 |
