摘要:
A fluid control solenoid valve comprises a housing defining therein a fluid passage including a valve seat having a valve port for allowing the passage of the fluid. A plunger having a valve body and movable between a valve closed position and a valve open position is slidably guided by a plunger guide with a sliding contact region therebetween. A biasing spring biases the valve toward the closed position, and a solenoid coil is disposed for magnetically driving the plunger to the open position against the spring action. The solenoid valve further comprises a nonmagnetic cover disposed around the plunger for substantially closing the sliding contact region between the plunger and the plunger guide against ingress of any foreign matter entrained in the fluid.
摘要:
A roughened surface is formed on an insulating ceramics substrate having an electrode pattern by bonding or partially thrusting ceramics particles to or in the substrate, and a gas-sensitive metal oxide thick film is firmly bonded to the roughened surface.
摘要:
A gas sensor (1a) having a laminate including an alumina substrate (11) having a heating resister (115) embedded in the alumina substrate (11); a first oxygen-ion conductive solid electrolyte layer (131) containing zirconia and alumina and partly constituting an oxygen-detecting cell (13) and the first solid electrolyte layer (131) being laminated with said alumina substrate (11); a second oxygen-ion conductive solid electrolyte layer (121) containing zirconia and alumina and partly constituting an oxygen-pumping cell (12); an ion-leakage preventing ceramic spacer (143) for preventing oxygen-ions from leaking from the second oxygen-ion conductive solid electrolyte layer (121) to the first oxygen-ion conductive solid electrolyte layer (131), the spacer (143) being laminated between the first and second oxygen-ion conductive solid electrolyte layers (131, 121); and a gas-diffusion space (141) formed between an electrode (133) of the oxygen-detecting cell (13) and an electrodes (126) of the oxygen-pumping cell (12). Furthermore, the laminate (1a) is co-fired. Preferably, the zirconia contained at least in the second solid electrolyte layer is made of partially stabilized zirconia, the phase formed in the zirconia consisting essentially of tetragonal and cubic phases. Additionally, an ionic migration-preventing electrode (117) is optionally embedded in the alumina substrate (11) for preventing metal ion migration.
摘要:
A bonded-substrate fabricating apparatus capable of reducing defective bonded substrates fabricated. A transfer robot sucks the outer edge area of the bottom surface of a substrate and spouts gas toward the bottom surface of the substrate to carry the substrate into a vacuum process chamber of a press machine while keeping the substrate horizontally. A press plate holds the substrate, which is held by the transfer robot, by suction.
摘要:
A gas sensor element having an element body, the element body including: a ceramic heater having ceramic layers and a heater element embedded in the ceramic layers; and a solid electrolyte layer including a detection section covered by a pair of electrodes, the solid electrolyte layer being laminated together with the ceramic heater. Furthermore, the element body has a width at a front portion including the detection section smaller than at a rear portion, and at least both side edge faces of the front portion of the element body are covered with a porous layer.
摘要:
Disclosed is a bonded-substrate fabricating apparatus capable of reducing defective bonded substrates fabricated. A transfer robot sucks the outer edge area of the bottom surface of a substrate and spouts gas toward the bottom surface of the substrate to carry the substrate into a vacuum process chamber of a press machine while keeping the substrate horizontally. A press plate holds the substrate, which is held by the transfer robot, by suction.
摘要:
A gas sensor having a gas sensor element which includes: a reference electrode; a solid electrolyte layer having oxygen ion conductivity; a detection electrode; and an electrode-protecting layer covering the detection electrode. The electrode-protecting layer is a porous body carrying catalytic metal, and includes: a detection electrode side portion having a catalytic metal loading ratio of more than 0% by weight and not more than 0.005% by weight; and a surface side portion provided closer to the outer surface of the electode-protecting layer than the detection electrode side portion, the surface side portion having a catalytic metal loading ratio of 0.01% by weight or more.
摘要:
A solid electrolyte layer or body capable of being co-fired with an insulating ceramic substrate or body to be used as a gas sensor laminate. The gas sensor laminate is preferably composed of an alumina substrate (1) and an oxygen-ion conductive solid electrolyte layer (6) bonded to the alumina substrate (1) by firing. The oxygen-ion conductive solid electrolyte layer or body is formed from partially or wholly stabilized zirconia, which layer contains alumina in an amount of 10% to 80% by weight, particularly 30% to 75% by weight. In this manner, another ceramic layer; particularly, a ceramic layer (7) of alumina can further be bonded to the oxygen-ion conductive solid electrolyte layer. The relative density of the ceramic layer can be 60% to 99.5%, preferably 80% to 99.5%.
摘要:
A blind rivet disassembling device comprising a cutting means adapted to get in between a flange portion of a blind rivet and a base metal and cut a body portion of the blind rivet in a direction perpendicular to the axial direction of the body portion and toward a center of a through hole formed through the blind rivet, a push-out means which pushes out a residual mandrel from the flange portion toward a bulge of the through hole along the axial direction of the body portion, a moving means which causes the cutting means to move toward the center of the through hole, and an advancing means which causes the push-out means to advance into the through hole for pushing out the residual mandrel interlocked with the movement of the cutting means.
摘要:
The present invention provides a compact duty-driven solenoid valve which inhibits occurrence of impact sound upon driving and prevents occurrence of adherence at low temperatures. In this duty-driven solenoid valve, a plunger is arranged in a center hole of a bobbin having a coil wound thereon, and a guide made of a magnetic material is arranged on one end side of the bobbin, opposite to the plunger. A spring is provided so as to impart a force to move the plunger toward the guide, and further, a valve assembly for switching over a channel for a control fluid is arranged opposite to the plunger with the guide in between. A rod for transmitting a moving force of the plunger to the valve assembly is arranged so as to be inserted through the guide and to reach the valve assembly. The positional relationship between the rod and the valve assembly is configured to maintain a prescribed gap between the plunger and the guide during feeding of current to the coil.