摘要:
An automated reactant flow control subsystem is provided for a fuel cell system. The subsystem is achieved with a minimum of parts for decreased cost and increased reliability. The subsystem includes a fail-safe solenoid-actuated three-way valve in the fuel line that achieves very low pressure drop and very low parasitic load requirements. The subsystem also includes a fuel bypass system such as a flare, and a controller to automatically interlock the fuel and oxidant streams of the fuel cell.
摘要:
There is provided by this invention a protective enclosure for a personal electronic device that is generally comprised of a shell that is capable of enclosing and substantially surrounding the electronic device disposed to make the shell substantially watertight, substantially rigid and substantially crush-resistant. The enclosure has a transparent flexible protective membrane that is integrally fixed on the shell so that the flexible protective membrane is positioned over the touch screen of the electronic device when the electronic device is enclosed in the shell. The flexible protective membrane having a back side that has a substantially planar smooth surface that is adjacent to the touch screen of the electronic device wherein tactile inputs on a front side of the flexible protective membrane are communicated to the touch screen through the transparent flexible protective membrane. The enclosure also has a second transparent flexible protective membrane that is integrally fixed on the shell so that the flexible protective membrane is positioned over an alphanumeric keyboard of the electronic device forming a keyboard in the flexible protective membrane such that the flexible protective membrane has total interface with the enclosed keyboard allowing the user to use the keyboard of the enclosed electronic device through the flexible protective membrane.
摘要:
A composite transmission housing is provided with a die-cast metal base and an over-molded plastic body. The metal base provides mechanical strength for the transmission gears, while the plastic body forms a leak-free oil pan for the transmission oil. The method of making the composite transmission housing includes the steps of die-casting the metal base, inserting the base into a mold, and over-molding the plastic body onto the base.
摘要:
A protective membrane is disclosed for an electronic device that has a touch screen. The touch screen is protected with a membrane adapted to the specific contour and profile of the electronic device and allows the user to use the touch screen interface with no shortcomings. The protective case is further adapted to allow infrared and other communication signals while the device is secured inside the case. Further, electrical connections can be made through the case without affecting the protection afforded the electronic device inside.
摘要:
A heat exchanger for a solid-oxide fuel cell assembly. A plurality of parallel tubes conveys fuel cell stack exhaust gas from a first manifold means to a second manifold means. The tubes are highly corrugated to increase the wall area and decrease the wall thickness. The tubes are disposed in a jacket through which is passed incoming air to be heated. The tubes may be linear between two manifolds, or they may be curved such that the first and second manifold functions are accommodated within a single component.
摘要:
A protective enclosure is disclosed for an interactive flat-panel controlled device. The protective enclosure is watertight, crush-resistant, and impact-resistant. While providing protection, the protective enclosure simultaneously allows smooth and accurate interaction with the interactive flat-panel controlled device. The protective enclosure has a protective membrane that permits RF and touch screen stylus inputs, as well as capacitance, such as from a finger, to be transmitted accurately to the flat-panel control. The hardness and texture of the protective membrane allows a stylus or finger to glide smoothly along the surface of the membrane without catching or sticking. The protective enclosure is further adapted to allow infrared and other communication signals while the device is secured inside the case. Further, electrical connections can be made through the case without affecting the protection afforded the electronic device inside.