Did You Know...
...that the Eveready Battery began as an invention called the "electric flowerpot," which was a tube with a battery and light bulb inside? The idea was to fasten this gizmo to the side of a flowerpot so it would illuminate the flowers from the bottom. The idea died on the vine and the businessman who licensed the flower pot, Conrad Huber, was left with a pile of useless tubes -- until he found a way to market them as batteries to light the world!
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| Number | Title | Issue Date |
| 7219878 | Live loaded packing for valve In accordance with the present invention, there is provided a lie loaded packing assembly for a valve which comprises a valve body defining a passage having a valve stem moveably disposed therein and selectively moveable between open and closed positions. Extending ... | 05/22/2007 |
| 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 |
| 5873575 | Fluid cooled packing case member for compressors and other machinery A packing case member or packing cup for use in a package of other similar cups for mounting on a reciprocally or rotatably movable machinery shaft to prevent gas leakage along the shaft is disclosed. The member includes a circular central opening for the... | 02/23/1999 |
| 5263682 | Valve stem packing system A packing system for the operating stem of rotary valves includes first and second packing assemblies engaged with the stem at axially spaced locations. The first assembly is adjustably compressed into sealing engagement with the stem by a first packing n... | 11/23/1993 |
| 4917190 | Oil well blowout containment system An oil well blowout containment system which surrounds the polished rod is provided that will capture the oil leaking and blowing past the stuffing box packing gland. In addition, a vessel which is part of the oil well blowout containment system and is lo... | 04/17/1990 |
| 4765631 | Stuffing box sealing arrangement A stuffing box sealing arrangement for sealing a rotary shaft which extends into a pressure space includes two separate consecutive pressure chambers arranged at axially spaced locations along the shaft and an intervening space sealed with respect to the ... | 08/23/1988 |
| 4270762 | Disperser seal and method A seal for a shaft of a disperser crusher, that pulverizes hot coal particles, maintains a higher than atmospheric pressure within a casing for the crusher, and is able to withstand elevated temperatures that are produced within the casing. The pressure a... | 06/02/1981 |
| 4093239 | Piston rod sealing arrangement for a stirling engine A sealing arrangement for the light working gases of a Stirling engine comprises, surrounding the piston rod below the cylinder chamber, a block seal portion and a liquid seal portion, the latter including an oil scraping middle unit, a liquid chamber, an... | 06/06/1978 |
| 3955822 | Rod pump stuffing box control system A system for maintaining a constant biasing pressure upon the sealing members of a rod pump stuffing box utilizes a hydraulic system under a constant preset pressure to bias the seal member into sealing engagement against the pump polished rod. Means are ... | 05/11/1976 |
