Actor Marlon Brando has four patents, all named "Drumhead tensioning device and method."
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| Number | Title | Issue Date |
| 7213457 | Solid state illuminator for bi-color ported water level gauges A solid state illuminator and display are provided for bi-colored ported water level gauges suitable for use in high pressure steam drums or similar water/steam devices to facilitate making an accurate determination of water level in such devices. The illuminator in... | 05/08/2007 |
| 7197926 | Solid state illuminator for bi-color ported water level gauges A solid state illuminator and display means are provided for bi-coloured ported water level gauges suitable for use in high pressure steam drums or similar water/steam devices to facilitate making an accurate determination of water level in such a device. The illumi... | 04/03/2007 |
| 7193702 | Insertion fluid inspection device A fluid inspection device for inspecting a fluid in a vessel includes an elongate insertion well having a rear end disposed at the wall of the vessel and a front end disposed in the interior of the vessel. An inside of the insertion well is sealed off from the fluid... | 03/20/2007 |
| 6938481 | Sight glass and low temperature method of manufacturing the same An improved lower cost sight glass and a method for producing the same is disclosed, whereby the sight glass is made by placing a transparent component in secure contact with a metallic ring. The contact may optionally be effectuated by temporarily altering the rela... | 09/06/2005 |
| 6938477 | Solid state illuminator for bi-colored ported water level gauges A solid state illuminator and display means are provided for bi-colored ported water level gauges suitable for use in high pressure steam drums or similar water/steam devices to facilitate making an accurate determination of water level in such a device. The illumin... | 09/06/2005 |
| 6938500 | Spindle test apparatus and method An apparatus and method for testing a spindle are provided. The apparatus includes a rotational load device and a linear load device. The rotational load device is connected to the spindle via a shaft and configured to rotationally load the spindle. The linear load ... | 09/06/2005 |
| 6857315 | Armored tubular sight gauge with integral valves and misalignment unions An armored sight gauge assembly of the type having a sight tube that is placed between first and second spaced apart fittings to show a liquid level comprising an elongated main body positioned between and permanently connected to the first and second fittings. The ... | 02/22/2005 |
| 5076198 | Sight glass structure and method of installing the same This invention is directed to a novel method of removably securing a sight glass member to a refrigeration vessel in hermetically sealed relation therewith. In accordance with the method concept, a ferrule or like tubular mounting means is fixedly attache... | 12/31/1991 |
| 4807474 | Sight glass assembly A sight glass assembly comprising a housing adapted to be mounted on a wall, the housing having a bore therethrough, the housing bore having an enlarged section providing a shoulder, a lens disposed in the enlarged bore section and seated on the shoulder,... | 02/28/1989 |
| 4763063 | Compact digital pressure sensor circuitry A conditioning circuit for use with a pressure transducer is disclosed which provides a digitally readable electronic output signal indicative of capacitance sensed by the pressure transducer. The circuitry of the present invention utilizes an R-C charge/... | 08/09/1988 |
| 4620441 | Liquid level control A liquid level control responsive to the level of liquid in a vessel having visual verification of fluid level including a tubular body for attachment to an opening in a vessel, the body having aligned openings in opposite sides receiving a pivot shaft, a... | 11/04/1986 |
| 4441365 | Sight-glass mounting A sight-glass mounting consists of a section of pipe having a flange at each end and openings provided on diametrically opposite sides are sealingly covered by glass discs. The openings are arranged off-center with respect to the axis of the section of pi... | 04/10/1984 |
| 3957359 | Sight glass assembly A sight glass assembly adapted to be mounted across an opening in a vessel containing a fluid, generally including a housing having an opening registerable with a vessel opening, means for mounting the housing on such a vessel when the housing opening is ... | 05/18/1976 |
| 3936196 | Fluid chamber having manipulatable window elements An opaque fluid chamber having some means for filling and removing fluid therefrom and at least one aperture therein having a transparent plate sealing it, thereby permitting light to enter or leave the chamber through said aperture without losing fluid m... | 02/03/1976 |