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 |
| 5033673 | Hot water circulating system A hot water circulating system capable of constantly ensuring smooth and effective supply of water from an open tank to a water boiler without causing an air lock phenomenon irrespective of a variation in operating conditions of the system. In the hot wat... | 07/23/1991 |
| 4921166 | Hot water circulating system A hot water circulating system capable of decreasing energy loss, increasing the amount of hot water to be circulated per unit time and reducing time required for each circulating cycle. The system includes a valve opened at the start of emptying of water... | 05/01/1990 |
| 4915296 | Hot water circulating system A hot water circulating system capable of increasing the amount of hot water to be circulated in each circulating cycle, decreasing energy loss and improving heat efficiency. The system includes an emptiness detecting switch which is adapted to detect sta... | 04/10/1990 |
| 4691666 | Liquid heater with closed loop heat transfer system A system for heating large volumes of liquid in an industrial or commerical tank. The system includes a gas fired heat generating sender located adjacent the tank, a heating element or receiver means located in the tank, and a closed loop heat transfer ci... | 09/08/1987 |
| 4467862 | Device for passive heat transport and integrated solar collector incorporating same A device for passively transporting heat in any direction, particularly downwards, from a heat source to a heat sink, which device comprises a boiler for heating a working fluid, a container for condensing vapor of the heated working fluid, means for tran... | 08/28/1984 |
| 4383643 | Boiler tank for efficiently circulating low-temperature water A boiler tank (1) for a hot-water heating system comprises first (2) and second (7) partitions, defining first (4), second (9), and third (10) chambers. Inlet (6) and outlet (6') pipes communicate with the second chamber, a transfer conduit (3) intercommu... | 05/17/1983 |
| 4116167 | Methods and apparatus for heating a fluid by vapor condensation Methods and apparatus for heating and storing a fluid contain the fluid in a heat insulated space and prepare by heating of a heat transfer medium in a first region located at a distance from that space a vapor having a certain pressure and being condensa... | 09/26/1978 |
| 4016834 | Boiler with condenser An arrangement for heating a liquid including a boiler, and a condenser located at least in part within the boiler and open at its inlet end which is located within the boiler such that the liquid/gas combination heated in the boiler passes directly into ... | 04/12/1977 |
| 3951204 | Method and apparatus for thermally circulating a liquid Method and apparatus for transferring heat from an elevated location to a lower location through a thermally circulated working liquid substantially without height limitation, in which heat is provided at the higher location to the liquid in a first stand... | 04/20/1976 |
