Celebrity Inventors
Actor Marlon Brando has four patents, all named "Drumhead tensioning device and method."
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| Number | Title | Issue Date |
| 4923031 | High output loudspeaker system A loudspeaker with a pair of speaker units and a manifold chamber between the speaker units for combining the sound from both speaker units. The manifold chamber is formed by walls having an exit opening and a pair of rectangular apertures, the apertures ... | 05/08/1990 |
| 4874412 | Paint spray booth and filter therefor A paint spray booth with a filter and means within the spray booth to incinerate paint from the filter. A filter particularly adapted for collecting paint overspray in a paint spray booth. The filter has a plurality of members with a first portion paralle... | 10/17/1989 |
| 4855576 | Thermal insulating blocks and utilizing single blocks for electrical heating units The process of molding thermal insulating blocks and electrical heating units with a mold having a horizontal filter screen in which a slurry containing a mass of inorganic fibers, water, and a binder is mixed to randomly orient the fibers and thereafter ... | 08/08/1989 |
| 4848731 | Tire casing spreader A device for holding and supporting a tire casing during servicing, and for spreading the casing of a tire so that the inner tube may be removed. The device includes a stackable cylindrical base having diametrically opposite cut-outs to accommodate a tire... | 07/18/1989 |
| 4831950 | Wind propelled apparatus A sail propelled vehicle for land or sea in which a triangular yoke is pivotally attached at two of the corners thereof on two pontoons, skis, or skateboards at the forward ends thereof. The mast for carrying the sail is mounted vertically on the yoke at ... | 05/23/1989 |
| 4832182 | Bulk materials handling machine having a tractor drive An endless loop tractor drive mechanism has equally spaced pushers meshing with a bucket train where its filled circular buckets are traveling along a substantially straight ascending path to a dumping support wheel. Wire rope cables or other flexible ten... | 05/23/1989 |
| 4824715 | Engraving process and product thereof An engraved plastic article is prepared by applying a coat of epoxy resin paint to a polyether sulfone resin article, curing the coated article at an elevated temperature, and engraving indicia on a surface of the article. During engraving the paint coati... | 04/25/1989 |
| 4816629 | Snap-action electrical switch for automotive air control units The disclosed pushbutton operated automotive air control unit incorporates a unique snap-action electrical switch in which the movable contactor has a combination of sliding and rocking movement. The contactor is rockably supported on a fulcrum member whi... | 03/28/1989 |
| 4808997 | Photoelectric vehicle position indicating device for use in parking and otherwise positioning vehicles The position indicating device is employed to assist in parking and otherwise positioning a vehicle on a supporting surface. A photoelectric control unit is mounted on an overhead structure spaced above the supporting surface and has a beam emitting devic... | 02/28/1989 |
| 4801769 | Pushbutton cartridge switch for automotive air control units The disclosed pushbutton operated automotive air control unit incorporates a non-latching pushbutton switch for causing momentary switching of a control circuit, such switch being pre-assembled as a cartridge for easy insertion into the housing of the con... | 01/31/1989 |
| 4793012 | Beach mat adapted for use on a lounge chair A lounge chair with a beach mat resting upon the lounge chair in which the beach mat has a flap at one end which extends for a distance of 1/5 to 1/6 of the length of the beach mat and which accommodates the end of the back of the lounge chair to secure t... | 12/27/1988 |
| 4780142 | Hard setting refractory composition Novel compositions are disclosed for the manufacture of gunning mixes and strong castable products for use as monolithic refractory and construction materials which may contain no lime bearing cements. Bonding is based on the setting reaction of fumed sil... | 10/25/1988 |
| 4779035 | End of charge detector A method and apparatus for detecting the end of charge of a battery includes the steps of periodically changing, for a predetermined time period, the magnitude of charging current to a battery or bank of batteries, during each such predeterimined period, ... | 10/18/1988 |
| 4777652 | Radio communication systems for underground mines A radio communications system operational within the medium frequency range for underground mine communications, coupling MF carrier signals into existing conductive channels extending to within the mine and devices within the mine and coupled to the cond... | 10/11/1988 |
| 4775766 | Tapped transformer/switch assembly A power selector assembly for a loudspeaker includes in one embodiment an audio transformer upon which a printed circuit board (PCB) is mounted via connector strips having pins for both securing the PCB to the transformer, and for individually electricall... | 10/04/1988 |
| 4770095 | Squeeze roll and actuator assembly utilizing inflatable bags A differential pressure actuator includes two fluid containing bags mounted on opposite sides of a support bar, and one of the bags is coupled to a load by means of a plate at the side of the bag opposite the bar. The other bag is also coupled to the load... | 09/13/1988 |
| 4766278 | Sealed toggle action electrical switches The sealed toggle action switch comprises an operating lever having a front operating arm projecting out of the front component of the casing. The lever has a rear arm, projecting into the casing and carrying a contactor plate for relative sliding and swi... | 08/23/1988 |
| 4764384 | Method of filtering spent cooking oil A filtering media for use with edible liquids consisting of 80 percent synthetic amorphous silica, 10 percent synthetic amorphous magnesium silicate, 9 percent diatomaceous earth, and 1 percent synthetic amorphous silica-alumina. The process of rejuvenati... | 08/16/1988 |
| 4758702 | Switching mechanism for automotive heating and air conditioning systems The mechanism comprises a blower speed control lever for operating at least one electrical switch, supported by a mounting bracket which has a place for a second switch. The speed control lever has rearwardly facing rocker shaft elements which are pressed... | 07/19/1988 |
| 4745020 | Engraved plastic article An engraved plastic article is prepared by applying a coat of epoxy resin paint to a polyether sulfone resin article, curing the coated article at an elevated temperature, and engraving indicia on a surface of the article. During engraving the paint coati... | 05/17/1988 |
| 4733749 | High output loudspeaker for low frequency reproduction A loudspeaker system for low frequencies has a manifold chamber into which oppositely mounted and aligned woofer units radiate sound. The chamber radiates the sound perpendicularly to the woofer axes, either directly into space or into a horn. An addition... | 03/29/1988 |
| 4730090 | Electrical switch having oppositely facing contactor The switch includes a rotatable electrically insulating carriage having first and second contactors mounted thereon and facing in opposite directions from the path of the carriage, for a sliding engagement with first and second sets of fixed contacts. The... | 03/08/1988 |
| 4727766 | Heat regulating mechanism for automotive heating and air conditioning systems The mechanism comprises a heat control knob, pivotally mounted on the front end of an operating lever which is pivotally and slidably supported by second pivot means, having its pivot axis parallel with but spaced from the axis of the first pivot means. T... | 03/01/1988 |
| 4720612 | Pushbutton vacuum-electric air control unit for automotive vehicles A series of manually depressible pushbuttons establish all of the operating functions for an automotive air control system. Latching and block-out mechanisms are provided to latch only one pushbutton at a time in the depressed position. The pushbuttons op... | 01/19/1988 |
| 4719336 | Method of making thermal insulating blocks and electrical heating units and the products thereof The process of molding thermal insulating blocks and electrical heating units with a mold having a horizontal filter screen in which a slurry containing a mass of inorganic fibers, water, and a binder is mixed to randomly orient the fibers and thereafter ... | 01/12/1988 |
| 4717889 | Power control system for periodically and selectively energizing or shorting primary windings of transformers for controlling the output voltage across a common secondary winding A power supply includes a plurality of transformers with individual primary windings, having one end connected in common, respectively, the transformers sharing a secondary winding; a switching network for (1) applying alternate polarity DC voltages to th... | 01/05/1988 |
| 4710601 | Sealed toggle action electrical switches The sealed toggle action switch comprises an operating lever having a front operating arm projecting out of the front component of the casing. The lever has a rear arm, projecting into the casing and carrying a contactor plate for relative sliding and swi... | 12/01/1987 |
| 4707369 | Process for treating wet fat biological tissue using a water miscible solvent The process of simultaneously defatting and dehydrating raw fat animal tissue and other tissues in comminuted form by introducing the tissue particles into a boiling alcohol solvent, the fat of the tissue and water of the tissue being extracted into the b... | 11/17/1987 |
| 4696230 | Adjustable bustle-forming apparatus for maintaining registration of multicolor images on printing webs One or more wheel-air bustling devices are adjustably mounted between successive printing units of a multicolor printing press, to form adjustable bustles or ridges in the printed paper web. The bustles effectively shrink the width of the web, back to its... | 09/29/1987 |
| 4691086 | Pushbutton electrical switch having a flairing contactor loosely rotatable on a spring-biased eyelet The switch comprises a hollow, generally rectangular casing, a generally rectangular pushbutton slidable rearwardly in such casing, and a terminal supporting block closing the rear end of such casing. All of such components are made of moldable resinous p... | 09/01/1987 |
| 4685628 | Feed mechanism for a deboning machine or the like Pieces of bony meat, fowl, fish or the like descend through a receiving hopper or duct and are transported by a pair of feed screws, out of the hopper through an exit opening in one end thereof. The hopper has side walls which may converge downwardly, in ... | 08/11/1987 |
| 4680896 | Tool unloading mechanism for automatic tool grinding machine Successively finished drills or other tools are ejected from a chuck into successive angularly spaced openings in a rotary turret, mounted on a carriage with a power device for reciprocating the turret into and out of an unloading position. A ratchet whee... | 07/21/1987 |
| 4679588 | Combination rotary electrical switch and vacuum selector valve A single rotary shaft connected to a single rotary carriage operates a vacuum selector valve and two rotary electrical switches, in a casing having rear and front components. The valve comprises a valve carriage, slidable along a linear channel in the rea... | 07/14/1987 |
| 4678249 | Electrical switch having flexible printed circuit connector cable Compressible metal spring washers are mounted around the shank portions of terminal rivets and are clamped against thin conductor laminae of a flexible printed circuit having a resilient resinous plastic base lamina, clamped by the rivets against a relati... | 07/07/1987 |
| 4669181 | Method for manufacturing an electrical heating unit with serpentine heating elements A thermal heating and insulating unit is manufactured by molding in situ a block of thermal insulating material about an electrical resistance element. The resistance element is first made from a continuous wire of electrical resistance material and forme... | 06/02/1987 |
| 4667068 | Control mechanisms for automotive heating and air conditioning systems A function selector knob is pivotally mounted on a function control lever which is pivotally and slidably supported by first pivot means. A pin and slot connection is provided between the lever and a vacuum electric selector switch. A convertible detent m... | 05/19/1987 |
| 4641734 | Synchronizing mechanism for clutches In a synchronizing mechanism for clutches, there are provided between the gear shift sleeve and the synchronizing ring (14,15) stop bodies in the form of dogs (25, 26) which are in contact with the gear shift sleeve (between the teeth 34) in the circumfer... | 02/10/1987 |
| 4633747 | Sheet material slitter An elongated strip of sheet material is transported over a frame and along a transversely movable carriage on which upper and lower circular rotary cutting knives are mounted to slit the strip longitudinally into a desired portion to be processed immediat... | 01/06/1987 |
| 4624338 | Loudspeaker enclosure for a vibrating diaphragm loudspeaker A loudspeaker system employing a diaphragm type loudspeaker mounted in an opening in one of a plurality of walls of a hollow enclosure, the walls of the enclosure consisting of a plurality of layers disposed between surfaces thereof, the layers comprising... | 11/25/1986 |
| 4614658 | Filled sugar candies and a method of remelting and remolding such candies to produce home made molded hard sugar candies A filled sugar candy made with a hard sugar candy outer shell encasing a center filling made of a viscous liquid sugar syrup. The hard sugar candy outer shell consists essentially of sugar materials with a low moisture content, less than approximately two... | 09/30/1986 |
