Celebrity Inventors
Mark Twain (Samuel L. Clemens) received Patent No. 121,992 for "An Improvement in Adjustable and Detachable Straps for Garments." He later received two more patents: one for a self-pasting scrapbook and one for a game to help players remember important historical dates.
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| Number | Title | Issue Date |
| 5895203 | Centrifugal pump having separable, multipartite impeller assembly The centrifugal pump includes a separable, multipartite impeller assembly and preferably incorporates a shock-absorbent shaft support that is tolerant of impeller vibrations or minor imbalances in the impeller assembly. The multipartite impeller assembly ... | 04/20/1999 |
| 5818385 | Antenna system and method The antenna system and method for dynamically controlling radiation patterns provides an assortment of radiation patterns to increase the performance of communication systems, such as trunking communication systems and cellular communication systems. One ... | 10/06/1998 |
| 5796349 | System and method for monitoring wear of an axial bearing The axial bearing includes a first ring and a second ring. During operation of the axial bearing, the first ring rotates with respect to the second ring. Over time the foregoing rotation produces wear of the first ring; consequently, exposes layers of the... | 08/18/1998 |
| 5779449 | Separable, multipartite impeller assembly for centrifugal pumps The multipartite impeller assembly includes an impeller portion, a magnetic coupler, a snap-fit connector, and a radial bearing. The impeller portion and the magnetic coupler have complementary polygonal shapes which can be interlocked. The impeller porti... | 07/14/1998 |
| 5747942 | Inverter for an electronic ballast having independent start-up and operational output voltages The electronic ballast for a gas-discharge lamp includes an inverter. The inverter uses the combination of a step-up transformer, a resonant circuit, and clamping diodes to provide an operational inverter output voltage that is independent of the start-up... | 05/05/1998 |
| 5735668 | Axial bearing having independent pads for a centrifugal pump An axial bearing includes a ring, pads and a base. Multiple, independent pads are orientated in a curved or circular configuration with respect to one another. The pads are retained by recesses in the base. If the pump is installed in a centrifugal pump, ... | 04/07/1998 |
| 5717951 | Method for storing and retrieving information on a magnetic storage medium via data blocks of variable sizes A method for storing and retrieving information on a magnetic storage medium, such as magnetic tape, organizes files into data blocks of variable encoded block sizes. The encoded block sizes indicate file boundaries of files, intrablock data organization ... | 02/10/1998 |
| 5641275 | Grooved shaft for a magnetic-drive centrifugal pump The grooved shaft for a magnetic-drive centrifugal pump preferably has an axial groove with a semi-elliptical or U-shaped groove cross section. Adjoining the axial groove is a flat area which is tapered tangentially relative to a substantially cylindrical... | 06/24/1997 |
| 5599112 | Axial bearing having a variable coefficient of friction for monitoring wear The axial bearing includes a first ring and a second ring. During operation of the axial bearing, the first ring rotates with respect to the second ring. Over time the foregoing rotation produces wear of the first ring; consequently, exposes layers of the... | 02/04/1997 |
| 5562406 | Seal assembly for fluid pumps and method for detecting leaks in fluid pumps or fluid containment devices The seal assembly comprises a housing, a shaft, seals, and a reservoir. The housing has a hollow section bounded by a cylindrical surface and a first curved protrusion. The housing has a first channel and a second channel extending from the hollow section... | 10/08/1996 |
| 5440278 | Ferrite system for modulating, phase shifting, or attenuating radio frequency energy The radio frequency ferrite system for modulating, phase shifting, or attenuating radio frequency energy has a resonator, a ferrite polarizer, and coupling devices. The coupling devices are used to couple radio frequency signals to and from an interior of... | 08/08/1995 |
