摘要:
A temperature sensor (1) having a thick or thin film forming a resistance temperature sensing element (13c), a thermocouple (13a, 13b) or a resistance temperature device (13d) applied to the outer surface of one end (5) of a dielectric, cylindrical support (3) having a continuous circumferential protuberance (11) about the middle portion (9) thereof which can be engaged by a metal fixturing shell (33). Film type electrodes (15) and (17) extend upwardly along the outside of the dielectric support to terminal grooves (28) on the other end (7). A dielectric coating (29) is applied over the electrodes (15) and (17) to provide electrical isolation from the metal shell (33). A coating (29") may also be applied over the sensors (13) to reduce corrosion and abrasion and to provide electrical insulation.
摘要:
An ink feeding system for feeding ink to an ink fountain of a printing, duplicating or like machine includes a can holder for holding a can of printing ink. A support arm suspends the can holder and can above the ink fountain. A piston-and-cylinder device feeds ink from the suspended can through a hole in the closed bottom end of the can and into the ink fountain. A disposable gasket is placed on top of the ink in the can for engagement by a piston head of the piston-and-cylinder device.
摘要:
A boron nitride ceramic is used as a high temperature gasket material to prevent gas leakage between an exhaust gas oxygen sensor and the exhaust system of an internal combustion engine.
摘要:
A sensor (24) having a metal shell (30) joined to a sleeve (96) to locate a heater (92) in a thimble of an electrolyte member (72). A sealed joint is produced between the sleeve (96) and metal shell (30) to define a sealed reference chamber (118). A porous filter (112) in the sleeve (96) prevents water in environmental air from entering the reference chamber (118). Leads (106') and (106") which pass through a seal (123) adjacent the porous filter (112) are connected to terminals (164 and 164'). Terminals (164 and 164') located in a terminal member (120) position a heater (92) within chamber (118) and the electrolyte member (72). Leads (106 and 106.sup.n) which pass through the porous filter are connected to contact rings (142 and 144). Contact rings (142 and 144) are connected to an external and internal coating (80 and 82) on the electrolyte member (72). In response to a signal from a controller (26) electrical current is supplied to the heater (92) to maintain the temperature in chamber (118) above present limits such that changes in the ion conduction through the electrolyte member (72) is accurately measured. The changes result from a difference in the oxygen content of air in the reference chamber (118) as compared with oxygen in an exhaust gas supplied to the external surface (80). The seal (123) and filter (112) are free to move axially within the sleeve (96) while still maintaining radial engagement to assure that only dry environmental air is presented to the reference chamber (18).
摘要:
A novel antistatic packaging material and method employing a F.sup.+ -impted electractive polymer are described. The implanted polymer contacts the surface of the substrate and conducts away any static charge that may exist upon the substrate.
摘要:
An oxygen sensor utilizes a chrome oxide compensating resistor (5) in series with a titania sensing resistor (3). The chrome oxide resistor (5) not only compensates for the effects of temperature on the titania sensing (3) resistor, but since it exhibits (p) type behavior while the titania exhibits (n) type behavior in the presence of gaseous oxygen, the sensitivity of the sensor is increased. The resistors (3, 5) can be applied as a film to a substrate (7) or they can be formed as discrete chips. Substantial quantities of alumina and glass can be added to the chrome oxide without affecting oxygen sensitivity although the electrical resistance rises substantially.
摘要:
A holographic security label and automated reading machine for marking and subsequently authenticating any object such as an identification badge, a pass, a ticket, a manufactured part, or a package is described. The security label is extremely difficult to copy or even to read by unauthorized persons. The system comprises a holographic security label that has been created with a coded reference wave, whose specification can be kept secret. The label contains information that can be extracted only with the coded reference wave, which is derived from a holographic key, which restricts access of the information to only the possessor of the key. A reading machine accesses the information contained in the label and compares it with data stored in the machine through the application of a joint transform correlator, which is also equipped with a reference hologram that adds additional security to the procedure.
摘要:
This invention teaches a series parallel heated oxygen sensor control wherein a parallel portion is used to apply heat to the oxygen sensor during warm-up and a series portion is used to apply heat to the oxygen sensor afterwards so that about one quarter of the amount of power is applied after warm-up.
摘要:
A baffle is added to the inlet pipe and inlet volume of a catalytic converter to maintain separation between converging exhaust gas streams entering into the catalytic converter material. Combination of the exhaust gas streams entering the catalytic converter is thereby substantially avoided, allowing a single catalytic converter to handle the exhaust gas components of a plurality of exhaust gas streams from an engine without overloading the catalytic converter. Overloading of the catalytic converter due to the combination of exhaust gas components, and the related surging of unreacted gases to the atmosphere from overloading, is thereby substantially prevented, providing improved emissions control at a low cost, and without requiring addition of a second catalytic converter.