Abstract: A fuel cell assembly including: a first sidewall mounted to a base, the first sidewall including a first rail configured to cooperate with a fuel cell stack subassembly; a second sidewall mounted to the base opposite to the first sidewall including a second rail; a wet end unit mounted to wet ends of each of the first sidewall and the second sidewall, the wet end unit defining a plurality of manifolds configured to deliver hydrogen, oxygen, and coolant to the fuel cell stack subassembly; a first electronics housing mounted to dry ends of each of the first sidewall and the second sidewall; and a second electronics housing mounted to each one of the first sidewall, the second sidewall, the wet end unit, and the first electronics housing to provide a cover of a fuel cell housing configured to house the fuel cell stack subassembly.

Abstract: Aspects of the disclosure include fuel cell ejectors having valvular conduits (e.g., Tesla valves) for hydrogen recirculation systems. An exemplary vehicle includes an electric motor, a battery, a proton exchange membrane fuel cell (PEMFC), and a hydrogen recirculation system. The hydrogen recirculation system includes a hydrogen storage tank and a fuel cell ejector. The fuel cell ejector includes a primary flow nozzle coupled to the hydrogen storage tank, a secondary inlet coupled to the PEMFC, a suction chamber coupled to the primary flow nozzle and the secondary inlet, and a valvular conduit manifold positioned between the secondary inlet and an outlet of the PEMFC, the valvular conduit manifold including at least one minor return loop and at least one major return loop shaped such that hydrogen flows preferentially across the secondary inlet in a first direction from the PEMFC to the suction chamber.

Abstract: Disclosed is a fuel cell stack sub-assembly. The fuel stack sub-assembly may include a compression band that is adjustable. The fuel stack sub-assembly may include polymeric or composite end units with integrated balance of plant.

Abstract: Aspects of integrated hydrogen fuel cell injection units herein use additive manufacturing to form a single part. A space between a body and an ejector nozzle/venturi tube system forms an attenuation volume. The heat exchanger is integrated within the attenuation volume, saving space. The ejector nozzle/venturi tube, and the stack anode inlet to the fuel cell, are arranged through the heat exchanger and allow an injector at the base of the body to selectively emit hydrogen into the anode of the fuel cell. This architecture obviates the need for many O-rings and bolts used in present fuel injection systems using existing manufacturing techniques that may be unduly large and unwieldy and that may cause hydrogen leakage at different connection points.

Abstract: A multi-function fuel delivery system, a method of providing fuel delivery and a noise-attenuating and fuel injector housing device address a root cause of audible noise in a fuel delivery system by placing a sufficiently sized volume directly at the inlet of pulsed-type hydrogen injectors, thereby eliminating pressure pulsation and audible noise created by pressure pulsations. Combining a noise-attenuating function and a fuel supply rail capable of supplying hydrogen to multiple injectors, with both performed within a single volume, addresses space-related and cost-related challenges as well as other challenges of the fuel delivery system. The multi-function fuel delivery system includes a hydrogen (H2) heat exchanger, an H2 fuel manifold, and an upper fuel rail (UFR) that receives H2 that is noise-attenuated by the H2 fuel manifold and provides the noise-attenuated H2 simultaneously to a plurality of injectors.

Abstract: A capture device including a body defining a chamber configured to receive liquid and gas from a fuel cell system. The chamber includes an upper end region and a lower end region. An outlet is disposed at the body in fluid communication with the lower end region of the chamber. A gas bypass hose includes a first end in fluid communication with the upper end region of the chamber and a second end in fluid communication with the lower end region of the chamber. A solenoid valve is disposed between the chamber and the outlet. The solenoid valve is operable between an open state permitting fluid communication between the chamber and the outlet to drain liquid and purge gas from the chamber and a closed state preventing fluid communication between the chamber and the outlet.

Abstract: An injector/ejector assembly for a fuel cell. The assembly includes a body portion that extends along a central longitudinal axis. Recirculation flow passages are formed by and extend through the body portion. Each of the recirculation flow passages extend from a corresponding recirculation flow inlet to a corresponding recirculation flow outlet. A motive flow passage is formed by and extends through the body portion and reeds enclose at least a portion of the corresponding recirculation flow outlet for each of the recirculation flow passages.

Abstract: Aspects of integrated hydrogen fuel cell injection units herein use additive manufacturing to form a single part. A space between a body and an ejector nozzle/venturi tube system forms an attenuation volume. The heat exchanger is integrated within the attenuation volume, saving space. The ejector nozzle/venturi tube, and the stack anode inlet to the fuel cell, are arranged through the heat exchanger and allow an injector at the base of the body to selectively emit hydrogen into the anode of the fuel cell. This architecture obviates the need for many O-rings and bolts used in present fuel injection systems using existing manufacturing techniques that may be unduly large and unwieldy and that may cause hydrogen leakage at different connection points.

Abstract: A multi-function fuel delivery system, a method of providing fuel delivery and a noise-attenuating and fuel injector housing device address a root cause of audible noise in a fuel delivery system by placing a sufficiently sized volume directly at the inlet of pulsed-type hydrogen injectors, thereby eliminating pressure pulsation and audible noise created by pressure pulsations. By combining a noise-attenuating function and a fuel supply rail capable of supplying hydrogen to multiple injectors with both performed within a single volume addresses space-related and cost-related challenges as well as other challenges of the fuel delivery system.

Abstract: A multi-function fuel delivery system and method of providing fuel delivery is provided that addresses space-related and cost related challenges as well as other challenges by combining a noise attenuating function, a hydrogen heating function, and a fuel supply rail capable of supplying hydrogen to multiple injectors within a single volume where a heat-transfer core utilizes an existing available internal volume of an attenuating volume or a fuel rail of a hydrogen supply manifold. A hydrogen fuel manifold, a hydrogen heat exchanger, and a fuel rail are housed in a single chamber such that a hydrogen fuel heating/cooling function, a hydrogen fuel noise/vibration attenuating function, providing the heat to the heat-transfer core, and providing the noise-attenuated H2 are performed in the single chamber.

Abstract: A gear assembly rotates about a pin in an actuator. The gear assembly includes a gear. The gear includes a gear body including a first polymer surrounding and extending radially away from a rotational axis. The gear body has an internal surface that defines a bore along and about the rotational axis. The gear further includes a plurality of teeth extending from the gear body. The gear assembly further includes a bushing including a second polymer, different than the first polymer. The bushing is disposed within the bore. One of the bushing and the gear body is overmolded to the other one of the bushing and the gear body along the internal surface. The bushing has a bearing surface defining a hole along and about the rotational axis for rotatably engaging the bearing surface with the pin in the hole.

Abstract: A split column includes two half sections with locating features for aligning the half sections. A whole column is formed and then split into half sections. The locating features are formed on the inner surfaces of the half sections after the column is split into half sections.

Abstract: A pooper-scooper device for hands-free, no bending, scoop-up, temporary storage, release, and disposal of pet droppings having longer inner handle with attached to the ground end an ejector plate with a pattern of apertures incised throughout. Inner handle is received into shorter outer hollow handle part having a plate with skewers attached in the same pattern to its ground end. Longer inner handle extends from the ground end of the outer handle or from the top end providing for movement of its ejector plate over the length of the skewers to clean the skewers of the waste skewed. A hands-free detachable holding receptacle is an optional part and offers the use of disposable bags for collecting the waste.

Abstract: A split column includes two half sections with locating features for aligning the half sections. A whole column is formed and then split into half sections. The locating features are formed on the inner surfaces of the half sections after the column is split into half sections.

Abstract: A process for hydrolyzing products with enzymatic activity remaining in peptone solutions after mucosa hydrolysis is provided along with a process for preserving mucosa tissue. Broadly, the processes are carried out by hydrolyzing mucosa tissue according to conventional heparin manufacturing processes wherein an excess quantity of proteolytic enzymes is used. The resulting peptone solution is then contacted with proteins or protein-containing materials in order to hydrolyze the proteins. In another embodiment, mucosa tissue is preserved by mixing it with a preserving agent selected from the group consisting of hydrogen peroxide and phosphoric acid. The product preserved by hydrogen peroxide is low in ash, stable for at least a week, and has a reduced odor.

Abstract: A method and apparatus for retrieving, accessing, and storing medical data relating to a patient during a medical procedure. The invention provides a single interface to many disparate forms of medical data, which is accessible over a local area network; wide area network, direct connection, or combinations thereof. In one embodiment, an operating room control system for use during a medical procedure on a patient includes an input device, a display device, and a controller that is coupled to the input device and the display device. The controller receives one or more user inputs, transmits a command to a server located outside of the operating room to retrieve medical data, receives the medical data from the server, and displays the medical data on the display device. Medical data can be captured by the controller using, for example, a camera and a video/image capture board, keyboard, and microphone during surgery or examination of the patient.