Abstract: A hydraulic pump unit includes a cylindrical member that is fit into an outer circumference of the main shaft and a hydraulic pump body arranged on an outer circumferential side of the cylindrical member. The hydraulic pump body includes a ring cam mounted on the outer circumference of the cylindrical member, a pump bearing, a pump housing, a plurality of pistons housed in the pump housing and actuated by the ring cam, and a plurality of cylinders which guide the plurality of pistons in a radial direction and are arranged in a circumferential direction. The hydraulic pump unit is configured such that the pump unit is insertably fixed to the main shaft by the cylindrical member.

Abstract: A hydraulic pump comprises (1) an outward ring (24), including demountable blocks (30) comprising piston cylinders (32), and an inward ring (21), comprising a ring cam (23), coupled through a drive shaft (8) to the blades of a turbine (4). To enable maintenance, the outward ring is decoupled from a torque limiting device (16, 17) and rotated relative to the inward ring. Demountable blocks are then removed from the outward ring using a crane (61) including a line (62) extending from above the centre of mass of the demountable block and including a resilient portion (66) so that although the crane supplies the majority of the force required to remove the demountable block, an operator provides some force, enabling the process to be controlled. The method is suitable for maintaining large hydraulic pumps in wind turbine nacelles (2).

Abstract: In one aspect the present invention provides a method for selecting a cell or cell colony which produces a polypeptide of interest, comprising a) providing a medium comprising cells and a detection agent, wherein the detection agent is associated with a detectable signal and the detection agent is capable of binding to the polypeptide of interest; b) providing a solid phase having a capture agent disposed thereon, wherein the capture agent is capable of binding to the polypeptide of interest; c) contacting the medium with the solid phase; d) detecting the signal associated with the detection agent; and e) selecting a cell or cell colony associated with the signal, wherein presence of the signal is indicative of a cell or cell colony which produces the polypeptide of interest.

Abstract: A power generating apparatus includes a rotating shaft, a hydraulic pump driven by the rotating shaft, a hydraulic motor driven by pressurized oil supplied from the hydraulic pump, and a generator coupled to the hydraulic motor. Each of the hydraulic pump and motor includes working chambers each defined by a cylinder and a piston, a high pressure manifold and a low pressure manifold. Each of the high and low pressure manifolds includes branch channels connected to the working chambers and a merging channel connected to a high or low pressure oil line. The branch channels are equipped with high or low pressures valves, joined together and merged into the merging channel.

Abstract: A large hydraulic radial piston pump suitable to be driven by the turbine of a wind turbine generator has a circular cover formed from at least three cover segments. Underneath the cover segments a seal in the form of a vulcanised rubber band extends around the entire periphery of the pump. Thus, the cover can be readily removed within the difficult to access location of a wind turbine nacelle, but a reliable seal can still be formed. An air pocket outside the seal, or within the seal, facilitates pulsatile flow into the cylinders of the pump during operation.

Abstract: A renewable energy turbine generator (1), such as a wind turbine generator, comprises a hydraulic pump (20), a hydraulic motor (24) and an oil circuit (26, 28) connecting the hydraulic pump and the hydraulic motor. Oil in the low pressure side (28) of the oil circuit is cooled and supplied to the working chambers (95) of the hydraulic pump. A reduced temperature oil feed provides additionally cooled oil to the bearings of the hydraulic pump and the hydraulic motor. Thus, cooler and more viscous oil is supplied to the bearings (84) of the hydraulic pump and/or hydraulic motor and warmer and less viscous oil is supplied to the working chambers, increasing the efficiency and lifetime of the bearings and of the working portions of the hydraulic pump and motor.

Abstract: A power generating apparatus is provided with a hub rotated by the renewable energy received via a blade, a rotating shaft connected to the hub, a hydraulic pump mounted on the rotating shaft and driven by rotation of the rotating shaft, a hydraulic motor driven by pressurized oil from the hydraulic pump, a generator coupled to the hydraulic motor, a support providing reaction torque on the hydraulic pump from the rotating shaft while allowing a displacement of the hydraulic pump in a direction perpendicular to an axis of the rotating shaft, the hydraulic pump being supported by a nacelle through the support, and a pressurized-oil piping which is at least partially constituted of a flexible tube and which connects an outlet port of the hydraulic pump to an inlet port of the hydraulic motor to supply the pressurized oil from the hydraulic pump to the hydraulic motor.

Abstract: In one aspect the present invention provides a method for selecting a cell or cell colony which produces a polypeptide of interest, comprising a) providing a medium comprising cells and a detection agent, wherein the detection agent is associated with a detectable signal and the detection agent is capable of binding to the polypeptide of interest; b) providing a solid phase having a capture agent disposed thereon, wherein the capture agent is capable of binding to the polypeptide of interest; c) contacting the medium with the solid phase; d) detecting the signal associated with the detection agent; and e) selecting a cell or cell colony associated with the signal, wherein presence of the signal is indicative of a cell or cell colony which produces the polypeptide of interest.

Abstract: An object of the present invention is to provide a hydraulic pump structure which improves the ease of mounting the hydraulic pump on the main shaft, and a method of mounting the hydraulic pump which can be performed in a simplified manner. A hydraulic pump unit 10 is formed by unitizing a cylindrical member 46 fit into an outer circumference of the main shaft 12 and a hydraulic pump body 76 arranged on an outer circumferential side of the cylindrical member 46. The hydraulic pump body 76 comprises a ring cam 52 mounted on the outer circumference of the cylindrical member 46, a pump bearing 54, a pump housing 34, a plurality of piston 58 housed in the pump housing 34 and actuated by the ring cam, and a plurality of cylinders 60 which guide the plurality of pistons in a radial direction and are arranged in a circumferential direction, and the hydraulic pump unit 10 is configured such that the pump unit 10 is insertably fixed to the main shaft 12 by the cylindrical member 46.