Patent application number | Description | Published |
20110214953 | SHOCK ABSORBER - A shock absorber has an inclined surface that is inclined to a moving direction of the free piston in at least one of a free piston contact surface of a free piston with which an elastic body is in contact and a housing contact surface of a housing with which the elastic body is in contact. A shortest distance between the free piston contact surface and the housing contact surface is changed by movement of the free piston. | 09-08-2011 |
20110214955 | SHOCK ABSORBER - A shock absorber includes a first passage and a second passage to which a working fluid flows out from one chamber in a cylinder by movement of a piston, a damping valve installed on the first passage and configured to regulate a flow of the working fluid caused by sliding of the piston to generate a damping force, a back pressure chamber applying an internal pressure to the damping valve in a closing direction of the damping valve, a back pressure chamber inflow oil passage introducing the working fluid from one chamber into the back pressure chamber, a pressure chamber provided in-between on the second passage, and a free piston installed in the pressure chamber so as to freely slide in the pressure chamber. | 09-08-2011 |
20120160620 | DAMPING FORCE CONTROL TYPE SHOCK ABSORBER - Oil grooves of a shutter and oil holes of a stepped rod constitute first orifices as variable orifices whose opening areas are variable according to the rotational position of the shutter. The oil grooves of the shutter and oil holes of the stepped rod constitute third orifices as variable orifices. Cut portions of inner disk valves constitute second orifices. The opening areas of the variable orifices are changed by rotating the shutter, thereby controlling damping force characteristics in a low piston speed region and the relief pressures of pressure control valves independently of each other, and thus increasing the degree of freedom for adjusting the damping force characteristics. | 06-28-2012 |
20120160624 | SHOCK ABSORBER - A frequency-dependent mechanism provided at the lower end of a piston rod includes a tubular housing displaceable in an inner tube, together with the piston rod as one unit, and further includes a free piston and O-rings. A shutter of a passage area varying mechanism is provided with an axially extending inner hole, orifices, and oil grooves. The opening area between oil holes | 06-28-2012 |
20120248670 | SHOCK ABSORBER - A shock absorber includes first passages configured to communicate two chambers to flow a working fluid therebetween by movement of a piston, and a second passage configured to communicate with one chamber of the two chambers. The first passages have damping valves configured to suppress a flow of the working fluid generated by movement of the piston to generate a damping force. The second passage has a variable orifice having an area adjusted by an elastic member when a piston rod moves in an extension direction, a pressure chamber installed in series with the variable orifice, and a free piston configured to vary a volume of the pressure chamber by movement of the piston. | 10-04-2012 |
20130161141 | JOINED BODY, SHOCK ABSORBER, AND METHOD FOR MANUFACTURING SHOCK ABSORBER - A joined body includes a first member having a female portion, and a second member having a male portion inserted in the female portion at one end, and an annular groove along an outer circumference of the male portion. The first member and the second member are fitted to each other. A plurality of joint portions is formed on a side wall of the female portion. The joint portions are joined to the male portion by being pushed in the annular groove. A pressing member is formed at the female portion so as to face a position of the male portion axially different from the annular groove of the male portion. The pressing member is pressed against the male portion. | 06-27-2013 |
20140231201 | SHOCK ABSORBER - A shock absorber has an inclined surface that is inclined to a moving direction of the free piston in at least one of a free piston contact surface of a free piston with which an elastic body is in contact and a housing contact surface of a housing with which the elastic body is in contact. A shortest distance between the free piston contact surface and the housing contact surface is changed by movement of the free piston. | 08-21-2014 |
20140238793 | ELECTROMAGNETIC SUSPENSION APPARATUS - An electromagnetic suspension apparatus includes a stator disposed on a vehicle body side and including a core and coils, a movable element disposed on a wheel side and including an outer rube and permanent magnets, and a cylinder apparatus located inside the stator and the movable element and disposed between the vehicle body side and the wheel side. A rod of the cylinder apparatus and the outer tube are nonrigidly coupled to each other via a coupling member formed as an elastically deformable elastic body. When a lateral force is applied, the coupling member is elastically deformed, by which the outer tube moves or swings relative to the rod so that the coils and the permanent magnets can be prevented from contacting each other. | 08-28-2014 |
20140252735 | SHOCK ABSORBER - A shock absorber includes a first passage ( | 09-11-2014 |