Did You Know...
...that several people are credited with the invention of the flush toilet? Most people have heard of Thomas Crapper (1837-1910), the sanitary engineer who invented the valve-and-siphon arrangement that made the modern toilet possible. Another claimant to "the throne" was British inventor Alexander Cumming who patented a toilet in 1775. Then there's a nameless Minoan (a native of ancient Crete) who lived 4,000 years ago who supposedly was ahead of his time and created the first flush toilet!
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| Number | Title | Issue Date |
| 7218201 | High pressure resistance body element A high-voltage resistor element which is superior to heat resistance, dielectric breakdown strength, vibration resistance and durability performance, and is advantageous to maintenance, inspection, adjustment, replacement and repair, is made up of: a cylindrical out... | 05/15/2007 |
| 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 |
| 6018288 | Flat resistors for automotive blower motor speed control or other service The flat resistor comprises a stack of flat components including a first metal plate having assembly tabs bent, a first outer electrical insulator having alignment slots for receiving the tabs, a first sheet metal resistance element having slots for recei... | 01/25/2000 |
| 5300919 | Vibration and shock-resistant film-type power resistor The power resistor has a metal housing and heatsink, the bottom wall of which is planar and has a bolt hole therethrough for tight securing of the resistor to a chassis. A planar film-type power resistor is mounted in the housing and encapsulated therein,... | 04/05/1994 |
| 5198641 | Sheathed heater A sheathed heater wherein before the sheathed heater is assembled, an oxide film is formed on the inner peripheral surface of a metal pipe, and/or the outer surfaces of an internal heater and lead pins thereof which are inserted into the metal pipe by hea... | 03/30/1993 |
| 5109473 | Heater assembly for use in a corrosive environment A heater assembly for heating a container of corrosive fluid includes a housing adapted to be located in a container of fluid to be heated, a sealed chamber located in the housing, a heater located in the chamber, an electrically conductive sleeve assembl... | 04/28/1992 |
| 4956544 | Overheat protected electric cartridge heater An electric cartridge heater for use as an immersion heater in a steam table tank has a tubular elongate stainless steel sheath with a curved inner surface attached to a riser tube adapted to be connected to a wall of the tank and contains an electric hea... | 09/11/1990 |
| 4929092 | Resistance temperature detector A resistance temperature detector measures the temperature of fluid flowing through a pipe at a given point in the pipe. In the temperature detector, normal and backup temperature sensing resistance elements are secured with inorganic adhesive onto an inn... | 05/29/1990 |
| 4766291 | Electrical heating element module for hair comb or pick An electrical heating element module particularly useful for heating the teeth of a hair comb or pick includes a pair of parallel, side-by-side spaced elongated central conductors having wound thereon a fibrous inorganic electrical insulation material, su... | 08/23/1988 |
| 4701599 | Insulation system of sheathed heating elements An improved copper sheathed heating element for installation in appliances, such as electric kettles, includes a minor amount of a silicone water-proofing agent admixed with magnesium oxide filler agent prior to the element being annealed. Annealing of th... | 10/20/1987 |
| 4672248 | High speed brushless dynamoelectric machine with improved control wheel assembly for excitation system components A brushless dynamoelectric machine with a molded insulating control wheel having a rim on whose inner surface the rectifiers and other components of the starting control circuitry are directly mounted. Proximate the central hub of the control wheel is mou... | 06/09/1987 |
| 4639712 | Sheathed heater A sheathed heater comprising a metallic sheath, such as a stainless steel sheath, an electric heating element disposed within the sheath so that an electric current can be supplied thereto, and a filling material filled in the sheath for insulating the he... | 01/27/1987 |
| 4586020 | Sheathed resistance heater This invention relates to a sheathed resistance heater which comprises a metal pipe (3), a heating wire (2) received in the metal pipe, and an electrically insulating powder (4) filled in the pipe and also to a method for fabricating same. The electricall... | 04/29/1986 |
| 4506251 | Sheathed resistance heater This invention relates to a sheathed resistance heater which comprises a heating wire (2) received in a metallic pipe 3 and electrically insulating powder (4) packed in the pipe. A metallic powder of the specific type is added to the electrically insulati... | 03/19/1985 |
| 4480174 | Thermostatically controlled electric compressor sump heater having self-contained thermostat An electric heater for heating oil contained in the sump well of a compressor includes a thermally conductive shell having first and second opposed inner surfaces. A ceramic core having a D-shaped cross-section throughout is positioned in the shell and is... | 10/30/1984 |
| 4287502 | Cartridge heater structure An elongate, electric resistance heater having a tubular case, a plug in and spaced from one end of the case and elongate, flexible jacketed power lines extending through the plug and axially outward from said end of the case, an elongate, tubular, flexib... | 09/01/1981 |
| 4280045 | Skin effect heat generating unit having convective and conductive transfer of heat An electrical heat generating system of the skin effect current type having a two part elongate hollow element of ferromagnetic material enclosing an insulated energizing conductor. One part of the hollow element comprises an open face channel having two ... | 07/21/1981 |
| 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 |
| 4087775 | Mounting for an RTD element A temperature measuring probe utilizing an RTD element and an improved mode of assembling the element in a reliable manner which is proof against shock and vibration. Specifically, the invention has its most important applications in connection with minia... | 05/02/1978 |
| 4039996 | Electric heating elements An electric heating element, particularly of the cartridge type, comprising two elongated dielectric cores disposed within a metallic sheath. Each core has a plurality of longitudinally extending openings therein and more particularly one core has three l... | 08/02/1977 |
| 4017713 | Heater for severing plastic film A temperature controlled electric heater for severing a web of vinyl film which includes a plastic coated metallic sheath having internal heater elements arranged in a ceramic core and a thermal resistance element nested in the core and in surface contact... | 04/12/1977 |
| 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 |
| 3970817 | Hazardous leakage current preventing for refractory-encased heater elements Low-level "trickle" electric heater means in diverse forms prevents hygroscopic moisture accumulation adjacent relatively open or exposed ends of refractory-encased conventional electrical heating elements, thereby to prevent excessive leakage current thr... | 07/20/1976 |
