Did You Know...
...that Kleenex tissue was originally designed to be a gas mask filter? It was developed at the beginning of World War I to replace cotton, which was then in short supply as a surgical dressing.
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| Number | Title | Issue Date |
| 7347918 | Energy efficient evaporation system An evaporation system uses the weight of condensed liquid as an energy source. An inlet feed is introduced into an enclosure through an inlet. The inlet feed is vaporized in an evaporation region of the enclosure, and condensed to a liquid in a condensation region o... | 03/25/2008 |
| 6840744 | Continuous liquid flow system A system for continuous delivery of a measured flow of liquid to a processing apparatus includes a reservoir for holding a bulk supply of the liquid and an intermediate vessel. A first pump delivers liquid from the intermediate vessel to processing equipment at one ... | 01/11/2005 |
| 6428014 | Piston sealing ring assembly A piston sealing ring assembly (70) for sealing the piston/cylinder interface of a double-acting gas compressor including a first and second cut piston sealing ring (54,72) each bounded by first and second planar surfaces (6,8), the first piston sealing r... | 08/06/2002 |
| 5839886 | Series connected primary and booster compressors A primary compressor and a booster compressor connected in series is presented. A first conduit connects the low side of a heating/cooling or refrigeration system to the inlet of the booster compressor, the outlet of the booster compressor and the inlet o... | 11/24/1998 |
| 4253802 | Liquid fuel injection pumping apparatus A fuel pumping apparatus comprises feed pump supplying fuel to an injection pump. A chamber is located between the two pumps and has an outlet including a restricted orifice extending from the upper end of the chamber through which fuel and air collecting... | 03/03/1981 |
| 3973479 | Floor-ceiling air circulating device A floor-ceiling air circulating device includes a base adapted to be supported on the floor of a room, a duct assembly extending vertically from the base and defining a flow path between an upper outlet adjacent the ceiling of the room and a lower inlet a... | 08/10/1976 |
| 3964479 | Extracorporeal blood circulation system and drip chamber with adjustable blood level In accordance with the invention there is provided an extracorporeal blood circulation system including a drip chamber having a blood inlet in its top and a blood outlet in its bottom, such chamber during operation containing blood in its bottom portion a... | 06/22/1976 |
