Abstract: A medical device may include an elongated body having a distal elongated body portion and a central longitudinal axis. The medical device may include a balloon positioned along the distal elongated body portion. The balloon may be configured to receive a fluid to inflate the balloon such that an exterior balloon surface contacts a calcified lesion within a patient's vasculature. The medical device may include one or more pressure wave emitters positioned along the central longitudinal axis of the elongated body. The one or more pressure wave emitters may be configured to propagate at least one pressure wave through the fluid to fragment the calcified lesion. At least one pressure wave emitter may include an optical fiber configured to transmit laser energy into the balloon. The laser energy may be configured to create a cavitation bubble in the fluid.

Abstract: An apparatus and methods of inspecting, analyzing, classifying, and/or grading quality of a transparent sheet using a data set of photoelasticity measurements, thickness measurements, segmentation specifications, measurement specifications and quality control specifications of the transparent sheet. A results measurement is calculated on a computing system, quality control specifications are applied to the results measurement allowing writing to the database and creating reports, sending results to an operator interface and machine control.

Abstract: A method for managing enrollments of an IoT device is disclosed. The method includes: transmitting a request to enroll the device with a first device management service; receiving, from a server associated with the first device management service, a first policy profile including one or more first device management policies, the first policy profile defining at least one restriction on management of the device by other device management services with which the device enrolls; transmitting a request to enroll the device with a second device management service; receiving, from a server associated with the second device management service, a second policy profile including one or more second device management policies; identifying a subset of the one or more second device management policies which comply with the at least one restriction; and applying the identified subset of the one or more second device management policies on the device.

Abstract: A method for managing enrollments of an IoT device is disclosed. The method includes: transmitting a request to enroll the device with a first device management service; receiving, from a server associated with the first device management service, a first policy profile including one or more first device management policies, the first policy profile defining at least one restriction on management of the device by other device management services with which the device enrolls; transmitting a request to enroll the device with a second device management service; receiving, from a server associated with the second device management service, a second policy profile including one or more second device management policies; identifying a subset of the one or more second device management policies which comply with the at least one restriction; and applying the identified subset of the one or more second device management policies on the device.

Abstract: A method for controlling access to a vehicle is disclosed. The method includes: receiving, from a communication subsystem of the vehicle, a first request to authenticate a user requesting access to the vehicle; sending, to an electronic device associated with the vehicle, an instruction to perform a multiple-factor authentication of a first user of the electronic device; receiving, from the electronic device, a first message indicating that an identity of the first user of the electronic device has been verified based on at least the multiple-factor authentication; and in response to receiving the first message, sending, to the communication subsystem of the vehicle, a second message indicating successful authentication of the first user.

Abstract: A method for controlling access to a vehicle is disclosed. The method includes: receiving, from a communication subsystem of the vehicle, a first request to authenticate a user requesting access to the vehicle; sending, to an electronic device associated with the vehicle, an instruction to perform a multiple-factor authentication of a first user of the electronic device; receiving, from the electronic device, a first message indicating that an identity of the first user of the electronic device has been verified based on at least the multiple-factor authentication; and in response to receiving the first message, sending, to the communication subsystem of the vehicle, a second message indicating successful authentication of the first user.

Abstract: An apparatus and methods of inspecting, analyzing, classifying, and/or grading quality of a transparent sheet using a data set of photoelasticity measurements, thickness measurements, segmentation specifications, measurement specifications and quality control specifications of the transparent sheet. A results measurement is calculated on a computing system, quality control specifications are applied to the results measurement allowing writing to the database and creating reports, sending results to an operator interface and machine control.

Abstract: A method of cooling a rack of heat dissipating components comprises cooling air, and porting the cooled air into a volume in front of the rack from above the volume. The method further comprises moving the cooled air from the volume in front of the rack to a plenum at a rear portion of the rack to pressurize the plenum. The cooled air is moved with an air mover disposed at a bottom portion of the rack, The method also comprises flowing air from the pressurized plenum past or through heat dissipating components in the rack to the volume in front of the rack, by force of pressure in the plenum through air-directing ports in the plenum. The air may be flowed through the heat dissipating components, around the heat dissipating components, or both. The method further comprises drawing warm air from an upper portion of the volume in front of the racks to cool it again.

Abstract: A system for delivering cryogenic fuels to an engine uses a plurality of cryogenic pumps operating in offset phases to deliver high pressure fuel with a minimum of pressure ripple. The cryogenic pumps use engine oil and a hydraulic pump for actuation via electrohydraulic valves. A charge pump maintains pressure in the feed line so that the cryogenic pumps can be located away from the cryogenic fuel tank. A control strategy for the hydraulic pumps allows output pressure and flow rate to be closely controlled and regulated.

Abstract: A novel energy saving mode of charging an accumulator in an electro-hydraulic system is disclosed involving toggling the position of a fan isolation valve from the flow-passing position, where the flow is driving a fan motor thereby maintaining a fan in an on position, to the flow-blocking position where the flow is inhibited from driving the fan motor thereby causing the fan to turn off, when the time to charge an accumulator is less than the period of time that the fan may be off and still allow for the cooling requirements of the engine to be satisfied. By diverting fluid flow from driving the fan motor to charging the accumulator, the disclosed energy saving mode allows for a greater flow of fluid to be delivered to the accumulator for charging, making it possible to charge the accumulators quicker and more efficiently while maintaining the cooling requirements of the engine. The energy saving mode of operation may illustratively be used in a hystat fan and hybrid system.

Abstract: A contact tip for a welding gun having a central passage for a welding wire moving in a given direction toward a workpiece and receiving a welding signal by contact of the wire with the tip. The passage has an innermost end, an outermost exit end and a length. An opening in the contact tip intersects the passage so a pressure block slidably mounted in the opening is biased toward the wire by a spring around the contact tip urging the block against the wire. This tip is dimensioned and constructed to perform pulse welding by a relatively ductile wire.

Abstract: A contact tip for a welding gun having a central passage for a welding wire moving in a given direction toward a workpiece and receiving a welding signal by contact of the wire with the tip. The passage has an innermost end, an outermost exit end and a length of at least 1.5 inches and an opening in the contact tip intersects the passage so a pressure block slidably mounted in the opening is biased toward the wire by a spring around the contact tip urging the block against the wire. This tip is dimensioned and constructed to perform pulse welding by a relatively ductile aluminum wire.

Abstract: A piston assembly for use in the cylinder block of a fluid translating device such as a hydraulic pump or motor. The piston assembly has an inner core having a working end, a driven end and an axial stem. An outer sleeve is positioned about an axial stem of the inner core of the piston assembly. The outer sleeve is composed of a material, which is made from a material being lighter weight than steel, and secured to the axial stem. A slipper includes a piston receiving portion for pivotally receiving the driven end of the piston assembly. The piston assembly and slipper include a lubrication passage providing a path for pressurized fluid.

Abstract: A novel energy saving mode of charging an accumulator in an electro-hydraulic system is disclosed involving toggling the position of a fan isolation valve from the flow-passing position, where the flow is driving a fan motor thereby maintaining a fan in an on position, to the flow-blocking position where the flow is inhibited from driving the fan motor thereby causing the fan to turn off, when the time to charge an accumulator is less than the period of time that the fan may be off and still allow for the cooling requirements of the engine to be satisfied. By diverting fluid flow from driving the fan motor to charging the accumulator, the disclosed energy saving mode allows for a greater flow of fluid to be delivered to the accumulator for charging, making it possible to charge the accumulators quicker and more efficiently while maintaining the cooling requirements of the engine. The energy saving mode of operation may illustratively be used in a hystat fan and hybrid system.

Abstract: A hydraulic circuit is provided having a hydraulic actuator and a flow control valve. The flow control valve has a pressure adjusting element fluidly coupled to the hydraulic actuator and situated to affect a pressure of fluid being directed to the hydraulic actuator. The flow control valve also has an energy directing element operatively coupled to the pressure adjusting element and situated to be driven by the pressure adjusting element when the pressure adjusting element is selectively throttling fluid being directed to the hydraulic actuator.

Abstract: A method and system for intercepting and forwarding High-Speed SECS Message Services (HSMS) communication between at least two entities, includes a fail-safe bypass to ensure the communications link between the entities is not severed upon failure of the intercepting/forwarding agent. A “pass-through” agent is placed in between two entities communicating via an HSMS link, such that the pass-through agent is able to intercept messages from one entity and forward it to the other entity, and vice versa. The pass-through agent is able to see all messages between the two entities, and is also able to create HSMS messages and send them to one of the entities as if the message had come from the other entity, thereby conferring the ability to inject additional HSMS messages. Should the pass-through agent fail, a bypass mechanism ensures that the two entities can automatically resume HSMS communication without the pass-through agent.

Abstract: A variator is provided having a first shaft rotatable around a first longitudinal axis associated with the first shaft and a second shaft rotatable around a second longitudinal axis associated with the second shaft. The variator also has a pump driven by the first shaft. The pump includes a first plurality of drum sleeves attached to a first drum plate tilted at a first angle relative to the first longitudinal axis. The drum sleeves are positioned to slidingly receive a first plurality of piston members. Each piston member is configured to form a seal substantially perpendicular to an axis of an associated drum sleeve. The seal substantially prevents fluid from leaking out of a chamber formed by the piston member end the drum sleeve. The variator further includes a motor fluidly coupled to the pump and configured to drive the second shaft.

Abstract: A hydraulic circuit is provided having a hydraulic actuator and a flow control valve. The flow control valve has a pressure adjusting element fluidly coupled to the hydraulic actuator and situated to affect a pressure of fluid being directed to the hydraulic actuator. The flow control valve also has an energy directing element operatively coupled to the pressure adjusting element and situated to be driven by the pressure adjusting element when the pressure adjusting element is selectively throttling fluid being directed to the hydraulic actuator.

Abstract: A gripping device is disclosed for a set of pinch rollers used in a wire feeder that supplies a welding operation with a consumable welding wire. The welding wire passes between the pinch rollers whereby the pinch rollers engage the wire with a gripping force and incrementally rotate to control the outflow of the wire to the welding operation. The gripping device has a first member which is displaceable relative to a second member and a spring mechanism extending between the first and second members which has at least a first and a second spring modulus. The spring mechanism produces the gripping force as the first and the second members are displaced toward one another. The gripper urges one roller of the set of pinch rollers toward the other roller of the set to engage the wire and to apply the gripping force.

Abstract: A gripping device is disclosed for a set of pinch rollers used in a wire feeder that supplies a welding operation with a consumable welding wire. The welding wire passes between the pinch rollers whereby the pinch rollers engage the wire with a gripping force and incrementally rotate to control the outflow of the wire to the welding operation. The gripping device has a first member which is displaceable relative to a second member and a spring mechanism extending between the first and second members which has at least a first and a second spring modulus. The spring mechanism produces the gripping force as the first and the second members are displaced toward one another. The gripper urges one roller of the set of pinch rollers toward the other roller of the set to engage the wire and to apply the gripping force.