Quotables
"To place a man in a multi-stage rocket and project him into the controlling gravitational field of the moon where the passengers can make scientific observations, perhaps land alive, and then return to earth--all that constitutes a wild dream worthy of Jules Verne. I am bold enough to say that such a man-made voyage will never occur regardless of all future advances."
Lee deForest, American radio pioneer ; 1957
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| Number | Title | Issue Date |
| 7338049 | Self-cooling ferrfluid seal A self-cooling ferrofluid seal includes a housing having a housing case and an external pole piece integrally connected to the housing case where the housing case has a plurality of heat dissipating surfaces, a magnetic circuit within the housing formed in conjuncti... | 03/04/2008 |
| 7121554 | High-pressure sealing In a high-pressure cylinder with an axial plunger, a seal assembly for scaling the gap between the cylinder wall and the plunger. The assembly is disposed in an annual recess in the wall having an open end and a bottom opposite thereto, and comprises a plunger-seali... | 10/17/2006 |
| 6932351 | Packing case for cooling compressors and other machinery A packing case for cooling compressors and other machinery is disclosed. A packing case includes an opening through which a movable machinery shaft may be inserted such that the packing case is mounted on the shaft. In an exemplary embodiment, the packing case conta... | 08/23/2005 |
| 5908044 | Quadra-seal method and apparatus for operations upon fluid pressure containment bodies An apparatus for injecting sealant into the packing chamber of a valve requiring no venting of pressure within the valve. The apparatus which includes an interior valve is attached to the valve body by drilling and tapping a connection or by friction weld... | 06/01/1999 |
| 4795171 | Self-pressurized shaft or closure seal A pressurized fluid housing (4) has an opening (6) for receiving a movable shaft or stem (2). A hold down plate or bonnet (8) covers the opening and has an aperture (14) through which the shaft enters the housing. The hold down plate further includes a ri... | 01/03/1989 |
| 4184690 | Annular elements There is disclosed a seal formed by a seal housing having an annular chamber, a shaft extending therethrough and an annular sealing element disposed within the chamber and partitioning it into a plurality of annular spaces, the sealing element being rigid... | 01/22/1980 |
| 4168936 | Stuffing box A stuffing box which prevents the escape of highly pressurized, hot, solids-containing and/or toxic fluid media from the housing of a centrifugal pump has a receptacle with a flange which is sealingly secured to the housing and with a cylindrical portion ... | 09/25/1979 |
| 4146237 | Sealing device for Stirling engine piston rod in which no separation of oil and gas is necessary In Stirling engines the high pressure of the cycle requires special seals on the piston rod to prevent leakage of gas out of the high pressure cylinder into lower pressure regions such as a crankcase. A liquid oil seal is developed in a chamber around the... | 03/27/1979 |
