Class / Patent application number | Description | Number of patent applications / Date published |
092085000 | WITH CUSHIONING MEANS EFFECTIVE OVER A PORTION ONLY OF STROKE | 12 |
20100212491 | FLUID PRESSURE CYLINDER - A fluid pressure cylinder including a first damper and a second damper provided respectively on a head cover and a rod cover, which are disposed on both ends of the fluid pressure cylinder so as to face toward a piston. The first damper and the second damper are formed from an elastic material, and are made up from a main body portion against which the piston abuts, and a plurality of legs that project from the main body portion and which are gripped between the head cover and the rod cover and an inner wall surface of the cylinder tube. | 08-26-2010 |
20100300283 | Hydraulic Cylinder - A pressure-receiving face plate | 12-02-2010 |
20150047499 | FLUID PRESSURE CYLINDER - A cushion mechanism for decelerating a piston rod includes a holder fastened to an end surface of a cylinder portion fitted with an inner peripheral surface of a cylinder tube, an annular entry portion provided on the piston rod and advancing into the holder and the cylinder portion in the vicinity of the stroke end, a cushion passage leading a working fluid of the working chamber to a supply/discharge port, and an orifice plug fastened to the cushion passage, and the cushion passage includes an internal passage extending in a radial direction of the holder and to which the orifice plug is fastened, and the orifice plug is replaceable through a replacement port formed by penetrating the cylinder tube and communicating with the internal passage. | 02-19-2015 |
20150135946 | FACETED FASTENER DRIVER BUMPER WITH COOLING SLOTS - A bumper sized to fit a cylinder of a fastener driving tool includes a side profile of the bumper defined by a plurality of flat regions and a plurality of convex regions around an outer periphery of the bumper. Included in the bumper are an inner peripheral surface and an outer peripheral surface. The flat and convex regions are disposed on the outer peripheral surface of the bumper in an alternating pattern. | 05-21-2015 |
20150330420 | HYDRAULIC PISTON-CYLINDER GROUP - A hydraulic piston-cylinder group includes a cylinder containing a piston which defines internally of the cylinder at least a first and a second chamber, respectively communicating with a first and a second inlet/outlet hole of a pressurized fluid for actuating the piston between a first and a second position. The piston has a gully defined by a bottom wall, a first lateral wall that is proximal to the first free end, and a second lateral wall distal relative to the first free end, the first and second lateral walls serving as first and second abutments for the piston ring, the gully communicating through at least a passage with the first chamber. A depression is provided on the contact surface between the second lateral wall of the gully and the piston ring, the depression enables a controlled bleeding of the pressurized fluid between the piston ring and the second lateral wall. | 11-19-2015 |
20150354608 | Drive Unit of a Fluid-Actuated Linear Drive and Method for its Manufacture - A drive unit of a fluid-actuated linear drive includes piston rod, an annular drive piston seated coaxially on the piston rod and a buffer sleeve which is likewise seated coaxially on the piston rod. These components are secured to one another by one and the same common welded joint. Furthermore, a method for the manufacture of such a drive unit and a fluid-actuated linear drive equipped with such a drive unit is proposed. | 12-10-2015 |
20090101005 | FREE-PISTON DEVICE AND METHOD FOR OPERATING A FREE-PISTON DEVICE - There is provided a free-piston device, comprising at least one piston chamber in which at least one piston assembly is arranged for linear displacement, the at least one piston assembly being drivable under the action of a medium which expands in an expansion space, and the at least one piston chamber having a resilience space, in which a compressible gas is contained for exerting a returning force on the at least one piston assembly, and at which a control member is arranged for controlling the returning force while the free-piston device is in operation. A method for operating a free-piston device is also proposed. | 04-23-2009 |
20130199367 | Hydraulic Oil Cylinder and Related Equipments, Hydraulic Buffer System, Excavator and Concrete Pump Truck - A hydraulic oil cylinder has a buffer sleeve ( | 08-08-2013 |
20140090555 | CYLINDER - A cylinder comprises a cylinder body, a main cavity body, a piston and a piston rod. Air inlets and air outlets are arranged in each of two opposite ends of the cylinder body. The cylinder is further configured with an anti-collision structure. The anti-collision structure comprises a buffer rod arranged on the piston. The cylinder body defines a receiving hole corresponding to the buffer rod. The receiving hole is configured with a first sealing ring that seals a gap between the buffer rod and the receiving hole. The anti-collision structure has a flexible buffering function and does not generate hard impact. Thus, the cylinder has a low vibration and high stability. | 04-03-2014 |
20150040754 | FLUID PRESSURE CYLINDER - A cushion mechanism for decelerating a piston rod includes a holder fastened to an end surface of a cylinder portion fitted with an inner peripheral surface of a cylinder tube, a plurality of fastening bolts for fastening the holder to the cylinder portion, an annular entry portion provided on the piston rod and advancing into the holder and the cylinder portion in the vicinity of the stroke end, a cushion passage formed by penetrating at least one of the plurality of fastening bolts and allowing a working chamber and a discharge port to communicate with each other and leading a working fluid in the working chamber to a discharge port, and an orifice portion provided on the cushion passage and applying resistance to a flow of the working fluid. | 02-12-2015 |
20150345520 | HYDRAULIC CYLINDER WITH END POSITION DAMPING - A hydraulic cylinder with end position damping includes at least one cylinder in which there is arranged at least one piston which is connected to at least one piston rod and can be moved in the axial direction, wherein the cylinder is subdivided by the piston into a piston side and a rod side and the hydraulic oil necessary for actuating the piston is pumped by a hydraulic pump via inlet and outlet lines through inlet and outlet openings provided on the cylinder, wherein the cylinder is assigned a mechanical prethottling via which, during the movement of the piston, the hydraulic oil can be discharged on the rod side through a first bore until the piston, during its movement, closes the first bore and the hydraulic oil is thus discharged through a second bore, wherein, at a preset pressure, the mechanical prethrottling means forces the hydraulic pump into an electronically regulated pressure cutoff function which reduces the delivery rate of the hydraulic oil and the piston can be moved into its end position in a braked manner. | 12-03-2015 |
20160160892 | piston and piston-equipped assembly for a hydraulic unit or a piston-cylinder device of a vehicle braking system - A (collar-equipped) piston and a piston-equipped assembly for a hydraulic unit or a piston-cylinder device of a vehicle braking system, includes a contact surface for a sealing collar, which has a shape curving away from the sealing collar, formed on the piston, so that the sealing collar is pressable, at least partially, into a displacement volume, which is spanned by the contact surface of the piston, with a pressure which is present on a side of the sealing collar directed away from the piston. Also described is a hydraulic unit and a piston-cylinder device for a vehicle braking system, and a vehicle braking system. Further described is a manufacturing method for a piston for a hydraulic unit or a piston-cylinder device of the braking system, and a manufacturing method for a piston-equipped assembly for a hydraulic unit or a piston-cylinder device of the braking system. | 06-09-2016 |
092085000 | Metal spring | 1 |
20100212491 | FLUID PRESSURE CYLINDER - A fluid pressure cylinder including a first damper and a second damper provided respectively on a head cover and a rod cover, which are disposed on both ends of the fluid pressure cylinder so as to face toward a piston. The first damper and the second damper are formed from an elastic material, and are made up from a main body portion against which the piston abuts, and a plurality of legs that project from the main body portion and which are gripped between the head cover and the rod cover and an inner wall surface of the cylinder tube. | 08-26-2010 |
20100300283 | Hydraulic Cylinder - A pressure-receiving face plate | 12-02-2010 |
20150047499 | FLUID PRESSURE CYLINDER - A cushion mechanism for decelerating a piston rod includes a holder fastened to an end surface of a cylinder portion fitted with an inner peripheral surface of a cylinder tube, an annular entry portion provided on the piston rod and advancing into the holder and the cylinder portion in the vicinity of the stroke end, a cushion passage leading a working fluid of the working chamber to a supply/discharge port, and an orifice plug fastened to the cushion passage, and the cushion passage includes an internal passage extending in a radial direction of the holder and to which the orifice plug is fastened, and the orifice plug is replaceable through a replacement port formed by penetrating the cylinder tube and communicating with the internal passage. | 02-19-2015 |
20150135946 | FACETED FASTENER DRIVER BUMPER WITH COOLING SLOTS - A bumper sized to fit a cylinder of a fastener driving tool includes a side profile of the bumper defined by a plurality of flat regions and a plurality of convex regions around an outer periphery of the bumper. Included in the bumper are an inner peripheral surface and an outer peripheral surface. The flat and convex regions are disposed on the outer peripheral surface of the bumper in an alternating pattern. | 05-21-2015 |
20150330420 | HYDRAULIC PISTON-CYLINDER GROUP - A hydraulic piston-cylinder group includes a cylinder containing a piston which defines internally of the cylinder at least a first and a second chamber, respectively communicating with a first and a second inlet/outlet hole of a pressurized fluid for actuating the piston between a first and a second position. The piston has a gully defined by a bottom wall, a first lateral wall that is proximal to the first free end, and a second lateral wall distal relative to the first free end, the first and second lateral walls serving as first and second abutments for the piston ring, the gully communicating through at least a passage with the first chamber. A depression is provided on the contact surface between the second lateral wall of the gully and the piston ring, the depression enables a controlled bleeding of the pressurized fluid between the piston ring and the second lateral wall. | 11-19-2015 |
20150354608 | Drive Unit of a Fluid-Actuated Linear Drive and Method for its Manufacture - A drive unit of a fluid-actuated linear drive includes piston rod, an annular drive piston seated coaxially on the piston rod and a buffer sleeve which is likewise seated coaxially on the piston rod. These components are secured to one another by one and the same common welded joint. Furthermore, a method for the manufacture of such a drive unit and a fluid-actuated linear drive equipped with such a drive unit is proposed. | 12-10-2015 |
20090101005 | FREE-PISTON DEVICE AND METHOD FOR OPERATING A FREE-PISTON DEVICE - There is provided a free-piston device, comprising at least one piston chamber in which at least one piston assembly is arranged for linear displacement, the at least one piston assembly being drivable under the action of a medium which expands in an expansion space, and the at least one piston chamber having a resilience space, in which a compressible gas is contained for exerting a returning force on the at least one piston assembly, and at which a control member is arranged for controlling the returning force while the free-piston device is in operation. A method for operating a free-piston device is also proposed. | 04-23-2009 |
20130199367 | Hydraulic Oil Cylinder and Related Equipments, Hydraulic Buffer System, Excavator and Concrete Pump Truck - A hydraulic oil cylinder has a buffer sleeve ( | 08-08-2013 |
20140090555 | CYLINDER - A cylinder comprises a cylinder body, a main cavity body, a piston and a piston rod. Air inlets and air outlets are arranged in each of two opposite ends of the cylinder body. The cylinder is further configured with an anti-collision structure. The anti-collision structure comprises a buffer rod arranged on the piston. The cylinder body defines a receiving hole corresponding to the buffer rod. The receiving hole is configured with a first sealing ring that seals a gap between the buffer rod and the receiving hole. The anti-collision structure has a flexible buffering function and does not generate hard impact. Thus, the cylinder has a low vibration and high stability. | 04-03-2014 |
20150040754 | FLUID PRESSURE CYLINDER - A cushion mechanism for decelerating a piston rod includes a holder fastened to an end surface of a cylinder portion fitted with an inner peripheral surface of a cylinder tube, a plurality of fastening bolts for fastening the holder to the cylinder portion, an annular entry portion provided on the piston rod and advancing into the holder and the cylinder portion in the vicinity of the stroke end, a cushion passage formed by penetrating at least one of the plurality of fastening bolts and allowing a working chamber and a discharge port to communicate with each other and leading a working fluid in the working chamber to a discharge port, and an orifice portion provided on the cushion passage and applying resistance to a flow of the working fluid. | 02-12-2015 |
20150345520 | HYDRAULIC CYLINDER WITH END POSITION DAMPING - A hydraulic cylinder with end position damping includes at least one cylinder in which there is arranged at least one piston which is connected to at least one piston rod and can be moved in the axial direction, wherein the cylinder is subdivided by the piston into a piston side and a rod side and the hydraulic oil necessary for actuating the piston is pumped by a hydraulic pump via inlet and outlet lines through inlet and outlet openings provided on the cylinder, wherein the cylinder is assigned a mechanical prethottling via which, during the movement of the piston, the hydraulic oil can be discharged on the rod side through a first bore until the piston, during its movement, closes the first bore and the hydraulic oil is thus discharged through a second bore, wherein, at a preset pressure, the mechanical prethrottling means forces the hydraulic pump into an electronically regulated pressure cutoff function which reduces the delivery rate of the hydraulic oil and the piston can be moved into its end position in a braked manner. | 12-03-2015 |
20160160892 | piston and piston-equipped assembly for a hydraulic unit or a piston-cylinder device of a vehicle braking system - A (collar-equipped) piston and a piston-equipped assembly for a hydraulic unit or a piston-cylinder device of a vehicle braking system, includes a contact surface for a sealing collar, which has a shape curving away from the sealing collar, formed on the piston, so that the sealing collar is pressable, at least partially, into a displacement volume, which is spanned by the contact surface of the piston, with a pressure which is present on a side of the sealing collar directed away from the piston. Also described is a hydraulic unit and a piston-cylinder device for a vehicle braking system, and a vehicle braking system. Further described is a manufacturing method for a piston for a hydraulic unit or a piston-cylinder device of the braking system, and a manufacturing method for a piston-equipped assembly for a hydraulic unit or a piston-cylinder device of the braking system. | 06-09-2016 |
092085000 | Fluid spring | 5 |
20100212491 | FLUID PRESSURE CYLINDER - A fluid pressure cylinder including a first damper and a second damper provided respectively on a head cover and a rod cover, which are disposed on both ends of the fluid pressure cylinder so as to face toward a piston. The first damper and the second damper are formed from an elastic material, and are made up from a main body portion against which the piston abuts, and a plurality of legs that project from the main body portion and which are gripped between the head cover and the rod cover and an inner wall surface of the cylinder tube. | 08-26-2010 |
20100300283 | Hydraulic Cylinder - A pressure-receiving face plate | 12-02-2010 |
20150047499 | FLUID PRESSURE CYLINDER - A cushion mechanism for decelerating a piston rod includes a holder fastened to an end surface of a cylinder portion fitted with an inner peripheral surface of a cylinder tube, an annular entry portion provided on the piston rod and advancing into the holder and the cylinder portion in the vicinity of the stroke end, a cushion passage leading a working fluid of the working chamber to a supply/discharge port, and an orifice plug fastened to the cushion passage, and the cushion passage includes an internal passage extending in a radial direction of the holder and to which the orifice plug is fastened, and the orifice plug is replaceable through a replacement port formed by penetrating the cylinder tube and communicating with the internal passage. | 02-19-2015 |
20150135946 | FACETED FASTENER DRIVER BUMPER WITH COOLING SLOTS - A bumper sized to fit a cylinder of a fastener driving tool includes a side profile of the bumper defined by a plurality of flat regions and a plurality of convex regions around an outer periphery of the bumper. Included in the bumper are an inner peripheral surface and an outer peripheral surface. The flat and convex regions are disposed on the outer peripheral surface of the bumper in an alternating pattern. | 05-21-2015 |
20150330420 | HYDRAULIC PISTON-CYLINDER GROUP - A hydraulic piston-cylinder group includes a cylinder containing a piston which defines internally of the cylinder at least a first and a second chamber, respectively communicating with a first and a second inlet/outlet hole of a pressurized fluid for actuating the piston between a first and a second position. The piston has a gully defined by a bottom wall, a first lateral wall that is proximal to the first free end, and a second lateral wall distal relative to the first free end, the first and second lateral walls serving as first and second abutments for the piston ring, the gully communicating through at least a passage with the first chamber. A depression is provided on the contact surface between the second lateral wall of the gully and the piston ring, the depression enables a controlled bleeding of the pressurized fluid between the piston ring and the second lateral wall. | 11-19-2015 |
20150354608 | Drive Unit of a Fluid-Actuated Linear Drive and Method for its Manufacture - A drive unit of a fluid-actuated linear drive includes piston rod, an annular drive piston seated coaxially on the piston rod and a buffer sleeve which is likewise seated coaxially on the piston rod. These components are secured to one another by one and the same common welded joint. Furthermore, a method for the manufacture of such a drive unit and a fluid-actuated linear drive equipped with such a drive unit is proposed. | 12-10-2015 |
20090101005 | FREE-PISTON DEVICE AND METHOD FOR OPERATING A FREE-PISTON DEVICE - There is provided a free-piston device, comprising at least one piston chamber in which at least one piston assembly is arranged for linear displacement, the at least one piston assembly being drivable under the action of a medium which expands in an expansion space, and the at least one piston chamber having a resilience space, in which a compressible gas is contained for exerting a returning force on the at least one piston assembly, and at which a control member is arranged for controlling the returning force while the free-piston device is in operation. A method for operating a free-piston device is also proposed. | 04-23-2009 |
20130199367 | Hydraulic Oil Cylinder and Related Equipments, Hydraulic Buffer System, Excavator and Concrete Pump Truck - A hydraulic oil cylinder has a buffer sleeve ( | 08-08-2013 |
20140090555 | CYLINDER - A cylinder comprises a cylinder body, a main cavity body, a piston and a piston rod. Air inlets and air outlets are arranged in each of two opposite ends of the cylinder body. The cylinder is further configured with an anti-collision structure. The anti-collision structure comprises a buffer rod arranged on the piston. The cylinder body defines a receiving hole corresponding to the buffer rod. The receiving hole is configured with a first sealing ring that seals a gap between the buffer rod and the receiving hole. The anti-collision structure has a flexible buffering function and does not generate hard impact. Thus, the cylinder has a low vibration and high stability. | 04-03-2014 |
20150040754 | FLUID PRESSURE CYLINDER - A cushion mechanism for decelerating a piston rod includes a holder fastened to an end surface of a cylinder portion fitted with an inner peripheral surface of a cylinder tube, a plurality of fastening bolts for fastening the holder to the cylinder portion, an annular entry portion provided on the piston rod and advancing into the holder and the cylinder portion in the vicinity of the stroke end, a cushion passage formed by penetrating at least one of the plurality of fastening bolts and allowing a working chamber and a discharge port to communicate with each other and leading a working fluid in the working chamber to a discharge port, and an orifice portion provided on the cushion passage and applying resistance to a flow of the working fluid. | 02-12-2015 |
20150345520 | HYDRAULIC CYLINDER WITH END POSITION DAMPING - A hydraulic cylinder with end position damping includes at least one cylinder in which there is arranged at least one piston which is connected to at least one piston rod and can be moved in the axial direction, wherein the cylinder is subdivided by the piston into a piston side and a rod side and the hydraulic oil necessary for actuating the piston is pumped by a hydraulic pump via inlet and outlet lines through inlet and outlet openings provided on the cylinder, wherein the cylinder is assigned a mechanical prethottling via which, during the movement of the piston, the hydraulic oil can be discharged on the rod side through a first bore until the piston, during its movement, closes the first bore and the hydraulic oil is thus discharged through a second bore, wherein, at a preset pressure, the mechanical prethrottling means forces the hydraulic pump into an electronically regulated pressure cutoff function which reduces the delivery rate of the hydraulic oil and the piston can be moved into its end position in a braked manner. | 12-03-2015 |
20160160892 | piston and piston-equipped assembly for a hydraulic unit or a piston-cylinder device of a vehicle braking system - A (collar-equipped) piston and a piston-equipped assembly for a hydraulic unit or a piston-cylinder device of a vehicle braking system, includes a contact surface for a sealing collar, which has a shape curving away from the sealing collar, formed on the piston, so that the sealing collar is pressable, at least partially, into a displacement volume, which is spanned by the contact surface of the piston, with a pressure which is present on a side of the sealing collar directed away from the piston. Also described is a hydraulic unit and a piston-cylinder device for a vehicle braking system, and a vehicle braking system. Further described is a manufacturing method for a piston for a hydraulic unit or a piston-cylinder device of the braking system, and a manufacturing method for a piston-equipped assembly for a hydraulic unit or a piston-cylinder device of the braking system. | 06-09-2016 |