Did You Know...
...that in 1800 ether was first used by partyers as a fun diversion? Sniffing the gas led to hilarious and raucous laughter as people watched each other become more and more intoxicated and silly. Several doctors independently realized the value ether would have to anesthetize surgery patients. Of those who claimed rights to the "discovery," none had a happy ending. One had a seizure and died defending his rights. Another spent his life in an asylum because he had been denied acclaim. A third became addicted to chloroform and, in a New York City jail, he soaked a cloth in the drug, severed an artery and bled to death.
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| Number | Title | Issue Date |
| 5458465 | Fan impeller A fan impeller has a hub and fan blade units with fan blades connected to the hub. The fan blade units are made of plastic material reinforced with first fibers for transmitting forces acting on the fan blades into the hub. The first fibers extend substan... | 10/17/1995 |
| 5440807 | Method for manufacturing heat exchanger elements The method for manufacturing heat exchanger elements includes the steps of forming an open tubular base body having a longitudinal extension having a width that is substantially greater than the height thereby defining narrow and wide sides of the tubular... | 08/15/1995 |
| 5429185 | Heat exchanger with a plurality of parallel heat exchanger tubes A heat exchanger has a plurality of parallel heat exchanger tubes with two plane sides and two narrow sides. The heat exchanger tube has a contour with a width and a height in a direction of flow of a first heat-exchanging medium such that the width is mu... | 07/04/1995 |
| 5320070 | Method and device for using excess heat not required for operating a desulfurization device A method and a device for using excess heat of flue gas that is not required for operating a flue gas desulfurization device of a power plant is presented. Before being introduced into the flue gas desulfurization device. The flue gas is guided through pr... | 06/14/1994 |
| 5301746 | Natural draft cooling tower A natural draft cooling tower for condensing turbine steam of a power plant is comprised of identical sectors assembled to form the cooling tower. A central steam inlet line terminates in radial distributing lines. Each sector has one of the radial distri... | 04/12/1994 |
| 5301747 | Heat exchanger comprised of individual plates A heat exchanger comprised of individual plates has flow channels operating in parallel flow or counterflow. The flow channels for a first medium are defined between individual plates forming a pair and for the second medium are defined between the pairs ... | 04/12/1994 |
| 5282313 | Method for producing heat exchange elements and heat exchange elements produced thereby A method for producing heat exchange elements having a tubular base body with ribs connected to the outer surface area for increasing the heat exchange surface area are especially suitable for base bodies having a cross-section with a width that is substa... | 02/01/1994 |
| 5271459 | Heat exchanger comprised of individual plates for counterflow and parallel flow A heat exchanger for counterflow and parallel flow is comprised of a plurality of stacks of form-stamped individual plates that are combined to pairs and the pairs are assembled atop one another to form the stacks. A first flow channel for a first medium ... | 12/21/1993 |
| 5234672 | Method and apparatus for increasing the separating capacity of a flue gas desulfurization apparatus For increasing the separating capacity of a flue gas desulfurization apparatus, it is suggested to provide at least one baffle plate within the end section of the flue gas channel connected to the desulfurization reactor. The method for increasing the sep... | 08/10/1993 |
| 5225116 | Contact body for cooling towers A contact body for a cooling tower in which water to be cooled is distributed from the top of the contact body and in which cooling air flows through the contact body in a cross current and/or counter current flow relative to the water flow, is comprised ... | 07/06/1993 |
| 5167879 | Open-surface component The invention relates to an open-surface component for transferring heat and/or material between a gas and a liquid that are conveyed in crosscurrent and/or countercurrent flows, comprising a plurality of panels (1) that are disposed next to one another a... | 12/01/1992 |
| 5097582 | Apparatus for the exact positioning and fastening of several parts onto a hollow body An apparatus for the exact positioning and fastening of several parts, which have an opening, onto a hollow body, whereby, in the initial state, the opening of said parts, which are to be fastened, is larger than the dimensions of the respective fastening... | 03/24/1992 |
| 5007165 | Method of producing a cam shaft A method of producing a cam shaft or a similar member that has a core pipe upon which are secured, via expansion of the core pipe, components that are spaced from one another and have a precribed position on the core pipe, with the expansion of the core p... | 04/16/1991 |
| 4827605 | Apparatus for securing straight tubes between two tube sheets in a pressure-tight manner An apparatus for securing straight tubes between two tube sheets in a pressure-tight manner, especially in the manufacture of heat exchangers. Tubes are inserted, with play, in bores of the tube sheets. One end of each tube is hydraulically expanded via a... | 05/09/1989 |
| 4782571 | Method for securing straight tubes between two tube sheets in a pressure-tight manner A method and apparatus for securing straight tubes between two tube sheets in a pressure-tight manner, especially in the manufacture of heat exchangers. Tubes are inserted, with play, in bores of the tube sheets. One end of each tube is hydraulically expa... | 11/08/1988 |
| 4727635 | Method of securing tubes between tube sheets A method of securing tubes between tube sheets of a heat exchanger, with the tube sheets being interconnected via a housing. The tubes and/or the tube sheets of are made of a steel that has to be annealed after a welding process. To be able to provide a s... | 03/01/1988 |
| 4705057 | Cleaning device for regenerative heat exchangers A device for cleaning the heat-exchanging surface of a storage medium of a regenerative heat exchanger which has a rotatably driven hood. The device utilizes rinsing or cleaning fluid which is discharged from at least one spray nozzle essentially parallel... | 11/10/1987 |
| 4690207 | Natural-draft cooling tower with forced-draft flow over reflux condensers A natural-draft cooling tower having a plurality of preferably roof-shaped heat exchange elements for condensing the turbine exhaust steam from a power plant. A portion of the heat exchange elements are connected to operate as condensers, and another port... | 09/01/1987 |
| 4651809 | Regenerative heat exchanger A regenerative heat exchanger having a heat-exchanging storage medium which is provided with a plurality of flow channels. At each end there is provided a respective hood, which divides the storage medium via radial sealing members into at least one porti... | 03/24/1987 |
| 4580401 | Forced-air cooled condenser system A forced-air cooled condenser system having a plurality of heat exchange elements, preferably roof-shaped heat exchange elements with a steam distribution line which forms the ridge of the elements. Cooling air is supplied to the heat exchange elements vi... | 04/08/1986 |
| 4550570 | Forced-air cooled condenser system A forced-air cooled condenser system having a plurality of roof-shaped heat exchange elements of finned tubes, to which cooling air is supplied via fans, and to which the steam which is to be condensed is supplied via a steam distribution line which forms... | 11/05/1985 |
| 4527903 | Apparatus for uniformizing the parameters of a flow and/or for mixing together at least two individual streams which discharge into a main flow An apparatus for uniformizing the parameters of flow and/or for mixing at least two individual streams which discharge into a main flow, as in cooling towers with natural draft and/or with forced ventilation, with stacks or in pipeline systems. At least o... | 07/09/1985 |
| 4514344 | Apparatus for the mixing of different streams of air in a cooling tower Apparatus for the mixing of different streams of air and particularly dry and moist streams of air, in a cooling tower. In order to obtain an effective low-loss mixing over a short flow path by simple means, eddy fields are produced by at least one cylind... | 04/30/1985 |
| 4498786 | Apparatus for mixing at least two individual streams having different thermodynamic functions of state The present invention relates to a method and devices for mixing at least two individual streams having different variables. In order to produce a low-loss, effective mixing within a short flow section, at least one eddy impulse is produced in the cross s... | 02/12/1985 |
| 4407064 | Apparatus for pulling transverse fins onto a plurality of pipes An apparatus invention relates to an apparatus for pulling transverse fins onto a plurality of pipes which are arranged fixed in position alongside of each other by means of carriers the ends of which are operatively supported on respective endless carrie... | 10/04/1983 |
| 4330934 | Apparatus for pulling transverse fins onto a plurality of pipes An apparatus for pulling transverse fins onto a plurality of pipes which are arranged fixed in position alongside of each other by means of carriers the two ends of which are swingably supported on respective endless carrier conveyor chains between a work... | 05/25/1982 |
| 4328176 | Apparatus for damping the noise in cooling towers An apparatus for damping the noise of water charged in a cooling tower onto the top of heat exchanger elements by a distributing device and dropping down from the bottom of the heat exchange elements into a collecting basin, by means of vertically incline... | 05/04/1982 |
| 4218408 | Cooling tower with ripple plates A cooling tower with corrugated ripple plate for a substantially vertical assembly in wet cooling towers or combined wet-dry cooling towers in counter-flow or cross-flow construction, of which the portion at the upper end, the corrugation and the spacing ... | 08/19/1980 |
| 4197905 | Regenerative-air preheater A regenerative air preheater with guide devices serving the supply and exhaust of flue gas as well as air to be heated from at least two separated partial streams and with a heat exchanger body, which heat exchanger body, by means of a relative movement b... | 04/15/1980 |
| 4194381 | Device for the cold working of heat exchanger tubing for the attachment of spiral fins A device for the cold rolling of narrow flat lands on the cylindrical surface of heat exchanger tubing, just prior to the winding onto the tubing of one or more metal strips for the production of finned tubing, the device having pressure rollers on pressu... | 03/25/1980 |
| 4185346 | Safety device for sail yachts A safety device for sailing yachts with substantially flat and/or construction-free deck and with articulation points for the shrouds, which articulation points are located spaced from the ship's side. At both sides of the mast, respectively, one safety r... | 01/29/1980 |
| 4182402 | Rotary regenerative air heater In a rotary regenerative air heater, an improved annular heat exchanger stack composed of several layers of heater lamellae packages and grate-like guide screen layers arranged on both ends of each lamellae package. The guide screen layers guide the flows... | 01/08/1980 |
| 4171334 | Apparatus for securing assembly plates in spraying installations of heat exchangers An apparatus for securing assembly plates in washing or spraying installations of heat exchangers, particularly cooling towers, with at least two layers of vertical assembly plates, with the layers being disposed one above the other and the assembly plate... | 10/16/1979 |
| 4142646 | Device for the metallic sealing of an intermediate partition on a vessel A device for the metallic sealing of an intermediate partition on the smooth inner wall of a cylindrical vessel, particularly with large diameters, by means of a sealing ring which is variable with respect to its diameter, on which sealing ring, the inter... | 03/06/1979 |
| 4135575 | Tube wall made of tubes which extend parallel to one another and horizontal to inclined A tube wall made of tubes extending parallel to one another and horizontally to inclined, which are provided with opposite fins on the longitudinal edges of which adjacent tubes are welded gas-tight to one another. The fins are formed as a continuous band... | 01/23/1979 |
| 4133198 | Apparatus for bending large area construction units An apparatus for the bending of large area construction units, particularly of tightly welded tube walls for boiler construction, with a supporting table for that part of the construction unit which is not to be deformed, which is held down at least in th... | 01/09/1979 |
| 4123994 | Apparatus for suspension of a tube wall An apparatus for suspension of a tube wall, particularly a combustion chamber wall, made for example of helical finned tubes which are welded gas-tight with one another extending horizontally or inclined, on an upper part of a steam generator made of vert... | 11/07/1978 |
| 4103408 | Method for the cold working of heat exchanger tubing for the attachment of spiral fins A method for the cold rolling of narrow flat lands on the cylindrical surface of heat exchanger tubing, just prior to the winding onto the tubing of one or more metal strips for the production of finned tubing, the device having pressure rollers on pressu... | 08/01/1978 |
| 4055063 | Apparatus for the expansion of tube ends inside of a tube plate An apparatus for the expansion of tube ends inside of a tube plate by means of a probe insertable in the respective tube ends, the probe forming an annular space with the tube member to be widened by means of two seals spaced from one another, a pump oper... | 10/25/1977 |
| 4003970 | Combined wet and dry heat transfer system and method for cooling towers An adjustably operable heat transfer system for cooling tower installations, the heat transfer units consisting of a section of only "wet" operating evaporative heat exchanger units and a section of dual-purpose heat exchanger units which are adapted for ... | 01/18/1977 |
