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Actor Marlon Brando has four patents, all named "Drumhead tensioning device and method."
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| Number | Title | Issue Date |
| 6899807 | Solid and liquid separation device A solid and liquid separation device, comprising: a housing, the housing having an inlet, a solid outlet and a liquid outlet, the liquid outlet located in a lower portion of the housing; a screen located within the housing, the screen positioned above the liquid out... | 05/31/2005 |
| 6695122 | Chip conveyer and chip-separation/recovery apparatus A chip conveyer including an endless conveying member (18) that circulates in a predetermined direction for receiving chips discharged from a machine tool in a receiving zone, conveying the chips to a discharge position (E2) spaced from the receiving zone... | 02/24/2004 |
| 6357576 | Chip conveyors and apparatus for separating and collecting chips A chip conveyor includes an endless carrier that circulates in a predetermined direction such that chips discharged by machine tools are collected at a collecting position, are carried to a discharging position, which is spaced from the collecting positio... | 03/19/2002 |
| 5997740 | Lifting mechanism assembly for a rotary drive assembly A lifting mechanism for a sedimentation tank is provided for vertically raising and lowering a rake assembly in such sedimentation tank. The lifting mechanism comprises one or more elongate members pivotally connected to certain structural elements of the... | 12/07/1999 |
| 5720891 | Retractable sediment collecting device for covered basins A retractable sediment collection device for use in settling tanks is disclosed which has means for collecting and removing sediment from the floor of the settling tank. The retractable sediment collection device is structured to move back and forth along... | 02/24/1998 |
| 5478471 | Sludge scraping apparatus A work member comprising a sludge scraping member is guided by a monorail guide so that the guide and work member can be constructed in the most simplified form, and the working performance can be made excellent at the same time. By simplification of the ... | 12/26/1995 |
| 5200079 | Circular clarifier including improved skimmer clarifier A circular clarifier includes a skimmer assembly mounted on a rotatable arm of the clarifier. The skimmer assembly includes a parallelogram linkage having a pair of end links pivotably connected between upper and lower intermediate links. The skimmer blad... | 04/06/1993 |
| 5198125 | Method and apparatus for sludge collection An upper carriage floats on the surface of a settling pond or tank of liquid containing sedimentation settled out to form a bed of sludge in the bottom of the tank. A scraper assembly is suspended from the upper carriage by flexible cables or chains to a ... | 03/30/1993 |
| 4859346 | Ground mounted traction drive and method for sedimentation device A peripheral traction unit for a thickener is ground-mounted on a circular support base, normally of concrete, extending circularly at ground level below and exterior of the vertical walls of an above-ground thickener tank. A continuous rail and rack are ... | 08/22/1989 |
| 4855030 | Dendrite inhibitor An apparatus for removing dendrites or other crystalline matter from the surface of a liquid in a matter transport process, and an electrolytic cell including such an apparatus. A notch may be provided to allow continuous exposure of the liquid surface, a... | 08/08/1989 |
| 4751002 | Cable supported rake arm thickener Support of rake arms in a thickener is by sets of separate support cables and separate torque cables extending from outboard-of-the-center positions of rotating trusses extending radially of the sedimentation tank. The sets of support cables are attached ... | 06/14/1988 |
| 4725365 | Bar screen raking apparatus and method of use A rake apparatus for use with a bar screen in a fluid channel that catches debris whereby the rake apparatus enters the channel with reciprocal movement to remove debris caught on the screen bars. The novel raking apparatus has the ability to encounter an... | 02/16/1988 |
| 4624787 | Lifting mechanism for sedimentation device A lifting mechanism for a raking structure in a solids-liquid separation tank comprising a fixed column adapted to extend vertically within the tank, a movable column being adapted to support a raking structure for the tank, and a lift device for raising ... | 11/25/1986 |
| 4592835 | Pressure filter There is disclosed a nutsch filter having blades fitted to a central, vertically positioned hollow shaft by a hollow arm, the blades having a plough-like cutting edge and a spatula-like bottom surface acting in the opposite movement direction. A discharge... | 06/03/1986 |
| 4515694 | Cable lifting mechanism for sedimentation device A lifting mechanism for a rake arm and rake structure employed to move sediments settling out from a solids-liquid slurry in a sedimentation tank, includes a fixed center column (27) in the tank and a concentric movable column (28) in telescoping relation... | 05/07/1985 |
| 4494581 | Isolation of forestream and midstream portions of collected urine samples A forestream sample of a urine void is isolated from a subsequently collected midstream specimen by means of a valve controlled by material which swells to many times its original volume when exposed to urine. The material is disposed in a forestream rece... | 01/22/1985 |
| 4492258 | Sterile urine specimen collection Sterile urine specimen collection is achieved by collecting the initial or forestream portion of a void in a chamber and then directing the midstream overflow into a specimen container in which the chamber is partially disposed. Overflow from the specimen... | 01/08/1985 |
| 4486309 | Sludge shovel apparatus In a rectangular primary sedimentation tank having a transverse trough for sludge collection, a sludge shovel apparatus is provided for efficient removal of sedimentation. In one embodiment, a reciprocative trolley assembly, hoist linkage and latching mea... | 12/04/1984 |
| 4462908 | Rake lifting means for sedimentation apparatus A motorized lifting mechanism for the rake arms of a sedimentation tank which comprise spaced vertical pairs of pivot link arms interconnecting the rake arm frame to a main center rake arm drive cage and wherein the rake arm frame is in turn interconnecte... | 07/31/1984 |
| 4424130 | Rake drive and lifting device for sedimentation apparatus An apparatus for driving and lifting the rake assembly in a sedimentation basin. An annular hub is mounted on the main gear member, such hub having slot means through which vertical edges of a vertically-extending rectangular torque-plate are slidably aff... | 01/03/1984 |
| 4417983 | Scraper apparatus for settling basins and the like Scraper apparatus for settling basins embodies a translatable bridge which is mounted above the basin and carries a pivot arm and a loading device that generates a return force for loading a scraper blade carried by the pivot arm into the scraping positio... | 11/29/1983 |
| 4367141 | Apparatus for the concentration of sludges and suspensions The apparatus is suitably disposed within a circular tank and comprises a stationary bridge, a feeding bell, a scraper, driving means, and an optional foam scraping means. The apparatus is characterized in that it has a centrally suspended rotating scrape... | 01/04/1983 |
| 4247400 | Rotary rake structure for a settling tank A rotary rake structure for use in a settling tank comprises a torque transmitting member and a pair of rake arms. The torque transmitting member is mounted in the tank for rotation about a vertical axis. Each rake arm comprises one or more upper chords a... | 01/27/1981 |
| 4172040 | Sediment raking device In a sediment raking device with a centrally arranged rotated torque tube, radially arranged booms and rake arms between said booms at a lower level a link rod is provided between the rake arms and the torque tube which is connected to the rake arm by a h... | 10/23/1979 |
| 4137170 | Travelling precipitate collector A travelling precipitate collector in which a transversely travelling frame is movably provided on a longitudinally travelling frame body, striding over a plurality of sedimentation basins and an elevating frame is vertically movably, interposedly provide... | 01/30/1979 |
| 4118321 | Device for tanks of circular type such as, for example, thickeners, sludge tanks, mixing tanks and the like The present invention relates to a device for tanks of circular type, such as for example thickeners, sludge tanks, mixing tanks and the like, in which at least one scraper arm, mixing arm or the like is journalled, as well as mounted in the center of the... | 10/03/1978 |
| 4053421 | Sedimentation tank with raking structure A raking structure for moving settled solids to a discharge opening in the bottom of a sedimentation tank is disclosed herein. The raking structure consists of a rotatable member and a rake arm pivoted on the rotatable member along an inclined pivot axis ... | 10/11/1977 |
| 4005019 | Gravitational separator The disclosure relates to clarifiers for use in the gravity separation of suspended particles from liquids. A clarifier according to the invention includes a tank having a sludge outlet through which settled sludge can be removed and means for conveying s... | 01/25/1977 |
| 3959152 | Traction-driven composite sludge raking mechanism for sedimentation tanks A large sedimentation tank having a traction-driven composite sludge raking mechanism provided with lift capability, and comprising a rotary traction-driven drive arm of girder-like construction exposed above the liquid level, and draft-connected to an in... | 05/25/1976 |
