摘要:
The present invention provides an apparatus for repairing turbine blades of a gas turbine engine by a laser welding operation. The method uses a miniaturized laser and related apparatus. The miniaturized laser is fed through a borescope access hole to a desired location such as a high pressure turbine blade. The laser is then powered and manipulated so as to perform the desired welding operation. Filler material may also be provided in situ to accomplish the welding procedure. The method realizes a significant cost savings to the vehicle operator in that repairs can be accomplished without the need to remove the engine or disassemble the engine.
摘要:
A hand-held laser welding wand includes internal flow passages through which filler media, gas, and coolant may flow. The wand is dimensioned to be grasped with a single hand, thus filler media of various types and forms, gas, and coolant may be supplied to the hand-held laser welding wand via external systems and delivery devices without substantially impairing operation of the wand.
摘要:
A hand-held laser welding wand includes one or more filler media delivery flow passages. The wand is dimensioned to be grasped with a single hand, thus filler media of various types and forms may be supplied to the weld area on a workpiece using various types of delivery systems and methods, including fully automated, semi-automated, or manually. The filler media may be delivered via the filler media delivery passages or separate from the passages.
摘要:
A stacking device for assembling a slack of uniformly sized articles 1, has a receiving station for successively receiving said articles 1, and a lifting means to raise said articles from the receiving station to a stacking station The stacking station includes catching means 3 to catch and retain the articles in the stacking station, the catching means comprising at least two catchers 3 located on opposite sides of the station to engage opposite side edges of the article. The article 1 when being raised contacts the catchers 3 to displace the catchers to a closed position to enable the article to override the catchers 3 to move to a position above the catchers 3, the catchers 3 having biassing means to bias the catchers 3 back to an open position to engage and support the article 1 in the stacking station when the lifting means is withdrawn. The catchers 3 have a uniform cross-section and are pivotally mounted in a frame member 5 having a uniform cross-section.
摘要:
A method for machining a workpiece made from titanium based alloy is provided. the method comprises: heating the workpiece in a hydrogen containing atmosphere, whereby hydrogen is taken up; cooling the workpiece; metal-removing machining of the workpiece; and heating the workpiece in a hydrogen-free atmosphere, whereby hydrogen is released. A workpiece made by the method is also provided.
摘要:
A new method of producing liposomes is described using an in-line mixing system. The liposomes produced by this method find utility in numerous therapeutic applications.
摘要:
A hand-held laser welding wand includes a reflection shield that reflects laser light that is reflected off a work piece surface away from the hand of a user of the hand-held laser welding wand. The shield also reflects the thermal radiation transmitted from the work piece toward the wand during the weld process. This will help guard against a user of the wand absorbing laser light that may be reflected off the work piece, as well as significantly reduce any heat that might be transferred to the wand as a result of the reflected laser light.
摘要:
A hydraulic winch assembly is attached to a motor vehicle and hydraulically powered by the vehicle's power steering system. A four-way, dual solenoid-operated valve controls the flow of pressurized hydraulic fluid. During normal driving operations while the winch is not in use, hydraulic fluid flows through the valve with no diversion of fluid away from the power steering system. With either of the solenoid coils energized, the valve diverts hydraulic fluid to the winch motor for operation of the winch. Return hydraulic flow from the winch motor maintains sufficiently high pressure to enable the power steering system to function safely during operation of the winch. In this manner, the winch is fail-safe because power steering system operation will not be adversely affected in the event of an inadvertent activation of the winch. Hydraulic fluid is continuously cooled by a cooler, even when the winch is not in operation. The winch is remotely operated by means of a hand-held controller attached to an extended length of electrical cord. By plugging the cord into a recessed connector mounted to the vehicle's bumper, continuity is established between the vehicle battery and valve solenoids when a rocker switch on the controller is manually depressed. Electrical continuity cannot be established unless the controller is plugged into the system. As an added safety feature, continuous depression of the rocker switch is required for winch operation.
摘要:
The specification discloses a fluid coupling for connecting rotatable shafts. In one embodiment, rotation of an output shaft is transferred to a drive shaft by a pair of opposed rotatable rings having interleaved fins. The interleaved fins provide fluid filled chambers and relative movement of the fins compresses the fluid and increases the ability of the fluid to transfer torque.
摘要:
A stacking device for assembling a slack of uniformly sized articles 1, has a receiving station for successively receiving said articles 1, and a lifting means to raise said articles from the receiving station to a stacking station The stacking station includes catching means 3 to catch and retain the articles in the stacking station, the catching means comprising at least two catchers 3 located on opposite sides of the station to engage opposite side edges of the article. The article 1 when being raised contacts the catchers 3 to displace the catchers to a closed position to enable the article to override the catchers 3 to move to a position above the catchers 3, the catchers 3 having biassing means to bias the catchers 3 back to an open position to engage and support the article 1 in the stacking station when the lifting means is withdrawn. The catchers 3 have a uniform cross-section and are pivotally mounted in a frame member 5 having a uniform cross-section.