Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 7183892 | Chip PTC thermistor and method for manufacturing the same Chip PTC thermistors that can easily be inspected the soldered portions after it is mounted on a printed circuit board and that can be used in a flow soldering process, and methods of making same. A chip PTC thermistor of the present invention includes: a first main... | 02/27/2007 |
| 6317024 | Resistor for audio equipment A resistor 1 is used in high-fidelity amplifiers for audio equipment. The resistor 1 includes a cylindrical resistor body 2, a tubular sheath 3 into which the resistor body 2 is coaxially inserted, and a conductive film portion 31a formed on the inside su... | 11/13/2001 |
| 5144279 | Resistor element with thin porous metallic layer covered with glass coating A resistor element for determining a parameter, which includes a ceramic support having a bearing surface, an electrically resistive metallic layer formed on the bearing surface of the ceramic support, and a glass coating covering the metallic layer. The ... | 09/01/1992 |
| 4706060 | Surface mount varistor A varistor having opposed first and second major surfaces. A first electrode is disposed on at least a portion of both the first and second major surfaces, and a second electrode is disposed on at least a portion of both the first and second major surface... | 11/10/1987 |
| 4695818 | Electrical resistor with a negative temperature coefficient for incremental resistance values and method for manufacturing same An electrical resistor having a negative temperature coefficient for incremental resistance values has a resistance wafer with solderable coatings on opposite sides thereof and current lead elements soldered to the coatings, with the soldered ends of the ... | 09/22/1987 |
| 4417133 | Fuel tank having an immersion heating element assembly A fuel tank is provided with an electric immersion heating element assembly directly immersible in the fuel within the tank and resting on the curved tank bottom. The assembly includes an elongated, cylindrically shaped, solid aluminum heater body having ... | 11/22/1983 |
| 4335369 | Oxygen sensor An oxygen sensor in which a porous thick membrane (20) of transition-metal oxide and electrode metal thick membranes (14, 16) are provided on a ceramic base and these membranes are coated with a ceramic protective layer. The oxygen sensor in which the tra... | 06/15/1982 |
| 4320378 | Oxygen sensor Into a metal tube (24) provided with vent-holes (32) is inserted an oxygen sensor element (10) which comprises a ceramic round rod coated with a porous thick membrane of transition-metal oxide, divided electrode thick membranes (14) and a protective layer... | 03/16/1982 |
| 4318073 | Temperature sensor Temperature sensor in plug form comprises a plastic body member having a bore with a metallic sensing member in one end, a thermistor in the bore, and a contact member with a spring portion in the bore and a contact portion extending through a slot in the... | 03/02/1982 |
| 4283703 | Vibration-resistant probe-like electrical heaters A probe-like, vibration-resistant fast-heating electrical heater assembly for use in a pollution sensor of an exhaust monitoring system for internal combustion engines, which comprises an elongate metal tube having concentrically disposed therein a metal ... | 08/11/1981 |
| 4247753 | Battery operated electric heating device for thawing frozen locks A battery operated portable thawing device for frozen locks has an electrically heated thawing stick sized for insertion into the key hole of a frozen lock. The stick is thinner than the lock key and comprises a hollow metal body inside which is located a... | 01/27/1981 |
| 4179797 | Method of making a resistor array A resistor array formed by the process of forming a plurality of holes or grooves in an electrically insulating substrate, filling the holes or grooves completely with a flowable, electrical resistance material, and then hardening the resistance material.... | 12/25/1979 |
| 4178222 | Solid electrolyte oxygen sensor with electrically isolated heater A readily manufacturable heated solid electrolyte oxygen sensor. The sensor includes an elongated heater supported on a tubular reference electrode terminal in desired position relative to a solid electrolyte member within a cylindrical housing. The heate... | 12/11/1979 |
| 4175019 | Heated solid electrolyte oxygen sensor A readily manufacturable heated solid electrolyte oxygen sensor. The sensor includes a heater supported on a tubular reference electrode terminal in desired position relative to a solid electrolyte member within a cylindrical housing. The heater and termi... | 11/20/1979 |
| 4143347 | Temperature detector A temperature detecting device comprising a protective tube means having a flat inner bottom surface and a top opening end with a resilient metallic member positioned inside the tube for holding a thermistor. The resilient metallic member has a bottom sur... | 03/06/1979 |
| 4138655 | High temperature sensor A high temperature sensor in which a mixture of a metal fluoride composition and magnesium oxide is filled with pressure into a cylindrical case forming one electrical terminal for supporting a conductive rod forming the other electrical terminal, the hig... | 02/06/1979 |
| 4119937 | Metal base resistor A resistor, which can be of either the fixed or variable type, having a metal base covered by an insulating coating over all but an exposed area of the metal. A film type resistive compound or a wire winding covers the insulating coating but overruns it i... | 10/10/1978 |
| 4112410 | Heater and method of making same A heater comprising a metallic tubular sheath in which an elongate electrical center conductor is coaxially disposed therewithin. A fibrous, inorganic electrical insulation material is wrapped around the center conductor and an electrical resistance heati... | 09/05/1978 |
| 4087904 | Method to manufacture glow plugs, particularly to secure glow elements in sockets A thin-walled closed metal sleeve in which a heating wire is placed is attached in a socket which is formed with a bore with a carefully smoothly finished inner surface free from grooves or ridges and accurately dimensioned to a predetermined diameter; th... | 05/09/1978 |
| 4058787 | Temperature sensor A drawer type electrode of a thermistor for sensing high temperatures, wherein a shaft and a sheath are connected to a thermistor, is constructed such that the shaft and the sheath are brought into contact with the positive and negative electrode surfaces... | 11/15/1977 |
| 4001760 | Heating cables and manufacture thereof A mineral insulated heating cable and a method of making same wherein the cable has the characteristic that for a given supply voltage the heat generated per unit length of the cable is substantially unaffected by the total length of the cable. The minera... | 01/04/1977 |
