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...that "patent leather" got its name because the process of applying the polished black finish to leather was once patented?
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| Number | Title | Issue Date |
| 5027718 | Sectional table A sectional table for outdoor use comprises a plurality of substantially identical sections which, when assemled, may be formed into a regular polygon, e.g. octagon, etc., having a central opening of the same polygonal shape adapted to surround a columnar... | 07/02/1991 |
| 5027719 | Rotary grate for a solid fuel furnace The present invention discloses a rotary grate for a solid fuel fired furnace which allows ash, cinders and clinkers to be removed from the burning fuel mass, without reducing or stopping the combustion process. A plurality of parallel water cooled rolls ... | 07/02/1991 |
| 5027720 | Emissionless furnace boiler system An emissionless furnace boiler and effluent gas recovery system includes a pressure vessel having a fluid input and fluid output. The system is capable of maintaining an entropy characteristic equal to at least the condensing pressure of the lowest entrop... | 07/02/1991 |
| 5027721 | Method and apparatus for cleaning contaminated soil A portable machine for sanitizing soil, particularly that contaminated with petroleum products, including a closed main chamber including vertically spaced augers (26,28,30) which agitate the soil while moving it into position to fall in parallel sheets a... | 07/02/1991 |
| 5027722 | Process and device for processing slag and other combustion residues from waste incineration plants The slag occurring in the waste burning plant (1) is conducted from the slag exit (6) of the oven, directly into a separator (7) for coarse material and iron. There is no chilling in water. After the coarse cleaning, the slag is heated again by means of h... | 07/02/1991 |
| 5027723 | Method and apparatus for reducing sulfur dioxide content in flue gases A method and apparatus are employed to reduce the sulfur dioxide produced by the combustion of a sulfur-containing fuel in a combustion chamber. Part of the combustion air is introduced into the combustion chamber with and closely adjacent the fuel. Anoth... | 07/02/1991 |
| 5027724 | Subsoil fertilizer applicator having arcuately adjustable knife A fertilizer applicator employs a rotating, trash-cutting coulter and a knife located immediately behind the coulter with the leading arcuate edge of the knife and the rearward arcuate periphery of the coulter in intimately spaced relation to one another.... | 07/02/1991 |
| 5027725 | Seed dispenser for planters A seed dispenser is provided for an agricultural planter and is designed to dispense seeds of substantially uniform size and shape, to which end the dispenser has a drum-like casing provided with horizontally spaced apart upright walls spanned and joined ... | 07/02/1991 |
| 5027726 | Automatic roll to roll quilting machine for specialized quilting of patterns A roll to roll machine which incorporates the features of using a video camera and monitor to locate an intersection of a sewing needle and material and create a visual image of this intersection so that a remote operator can create a pattern of thread se... | 07/02/1991 |
| 5027727 | Sewing machine with adjustable fabric guide A sewing machine wherein the fabric supporting arm or bed carries a fabric guide which is movable to any one of a number of positions at different distances from the needle. The fabric guide carries a tape measure or the arm or bed carries a ruler. The ta... | 07/02/1991 |
| 5027728 | Chaining-off device for multiple needle chainstitch sewing machines A device for forming a thread chain on a multiple-needle chainstitch sewing machine having at least two sewing needles, a looper, a needle plate having at least two needle hole slots and a stitch formation tongue disposed between the needle hole slots, an... | 07/02/1991 |
| 5027729 | Method of manufacturing a pocket construction provided with a welt The present invention relates to a method of manufacturing a pocket construction provided with a welt. In order to provide a simple, efficient and automatable process of manufacture, a pocket pouch blank (8) is brought on the reverse side of a garment (3)... | 07/02/1991 |
| 5027730 | Sewing machine with a thread monitor for the thread of the bobbin Thread monitor for monitoring double lock stitch shuttles or hooks and chain stitch machine shuttles or loopers. During normal operation of the sewing machine, the shuttle thread is used as a reflection surface. The scattered light beams reflected by the ... | 07/02/1991 |
| 5027731 | Thread cutting knife device in a sewing machine A thread cutting knife device in a sewing machine having a bed has a lower shaft rotatably supported at the bed and a throat plate mounted thereon. A hook is attached to the lower shaft and extends beyond a throat plate. A thread cutting knife and a loop ... | 07/02/1991 |
| 5027732 | Thread end holding unit A thread end holding unit of a sewing machine employs a needle thread gripping puller driven so as to be positioned either at a thread catch position or a return position. The puller has a hook portion at a tip end thereof adapted for catching a needle th... | 07/02/1991 |
| 5027733 | Sewing machine with automatic separation of pieces of sewing material A sewing machine capable of automatically severing a thread chain between successive pieces of sewing material includes a cutting device provided behind a sewing needle in a feed direction of the sewing material, a suction device for sucking the thread ch... | 07/02/1991 |
| 5027734 | Zigzag sewing machine A zigzag sewing machine comprises a pattern data memory, a fixing stitch memory, a read-out unit, a controller, a determination unit, a switch-over mechanism and a stitch forming mechanism. The read-out unit reads out pattern stitch data from the pattern ... | 07/02/1991 |
| 5027735 | Kasipagan sail boat What has been created is the fastest sail boat that can act as a tugboat or industrially used to pull a water turbine for the production of electricity or compressed air, as compared to the capabilities of the prior arts of equal size and form. This is at... | 07/02/1991 |
| 5027736 | Elastically deformable bumper system An elastically deformable bumper for cushioning impact forces at a relatively rigid member includes a forward bumper wall member having an impact receiving surface at a first side thereof. At least one support web extending from a second side of the forwa... | 07/02/1991 |
| 5027737 | Amphibious hydrofoil vehicle A power driven tracked amphibious vehicle is disclosed for moving troops from ships to shore at speeds in excess of 25 miles per hour. The vehicle includes a pair of hydrofoil assemblies each pivoted to the vehicle for movement between an operative water ... | 07/02/1991 |
| 5027738 | Vessel for collecting and separating oil/water in a marine environment using submerged internal collection, and separation An oil spill retrieval vessel has an interior that contains skimmed oil and separates the oil within the vessel and underwater using a plurality of separator surfaces vertically stacked to catch and accumulate oil as it rises within the vessel interior.... | 07/02/1991 |
| 5027739 | Demountable cover for a boat hatchway or the like An easily deployable dodger providing a protective cover for the hatchway on a boat comprises a generally trapezoidal shaped sheet of flexible material, a portion of which is transparent. The sheet is tied by its corners and the midpoint of its base edge ... | 07/02/1991 |
| 5027740 | Valve cap pressure drop indicator A tire pressure indicator for visual observation of tire pressure including a screw-on cartridge containing a spring-biased piston with a movable shield which covers a central indicator pilot when tire pressure is up to requirements. When pressure is belo... | 07/02/1991 |
| 5027741 | Fire escape device A device which provides an escape route from a fire. In a first aspect, the present invention provides a directional fire hose which enables a person a person, even in a dark and smoke-filled environment caused by a fire, to follow the fire hose in a dire... | 07/02/1991 |
| 5027742 | Supercritical fluids as diluents in liquid spray application of coatings A liquid coatings application process and apparatus is provided in which supercritical fluids, such as supercritical carbon dioxide fluid, are used to reduce to application consistency viscous coatings compositions to allow for their application as liquid... | 07/02/1991 |
| 5027743 | Apparatus for applying liquid, pasty or plastic substances to a substrate In an apparatus for applying liquid, pasty or plastic substances, particularly thermoplastic substances, to a substrate with a device for melting the substances and a feed head for transferring the melted substances to the substrate via at least one nozzl... | 07/02/1991 |
| 5027744 | Developing device with development electrode cleaning unit A developing device which utilizes a development solution having toner particles actuated in the electric field generated by an electromember is provided with a cleaning unit to remove excess toner particles from the surface of the electrode member. The u... | 07/02/1991 |
| 5027745 | Developing apparatus having developer carrying roller with carbon fibers in surface layer A developing apparatus including a developing roller for carrying an one component developer to a developing zone for developing an electrostatic latent image. The developing roller is provided with a surface layer which contains long carbon fibers extend... | 07/02/1991 |
| 5027746 | Epitaxial reactor having a wall which is protected from deposits An epitaxial growth reactor for processing wafers (1) of a semiconductor material by exposing it to a reactive gas flow. A wall (8) positioned at a slight distance from the wafer or group of wafers which is exposed to the reactive gas in a double wall, wi... | 07/02/1991 |
| 5027747 | Apparatus and method for applying liquid to an animal An applicator for applying liquid, such as insecticide or medicine, to the coat of an animal. The applicator comprises a reservoir for containing the liquid, an anchor for mounting the reservoir above an animal pathway, and a plurality of flexible wicks d... | 07/02/1991 |
| 5027748 | Pet litter box A waste disposal system includes a generally rigid support skeleton defining an interior space configured to receive refuse and a flexible, bag-like member supported by, and enclosing therewithin the support skeleton. The waste disposal system may be adva... | 07/02/1991 |
| 5027749 | High efficiency water heater A multi-stage high efficiency gas fired water heater is provided which includes a lower storage tank and an upper recovery tank around a central flue. Scraping chambers are formed above and below the storage tanks for heat transfer from heated combustion ... | 07/02/1991 |
| 5027750 | Heat exchanger for suspension of liquid drops in a vapor Liquid and vapor are mixed and heated in a novel heat exchanger which comprises a shell, vertical heat exchange tubes, means for injecting vapor into the base of the shell, means for injecting liquid into a stream of the vapor and means to remove a stream... | 07/02/1991 |
| 5027751 | Method and apparatus for optimized boiler operation Boiler operations are fine tuned to minimize thermodynamic losses and pressure losses across throttle valves at the output of a boiler. Whenever the boiler is operating outside of desired operating levels, the first action considered is to reduce spray fl... | 07/02/1991 |
| 5027752 | Primary air preheater for char burning engines An air preheater is described which surrounds the char fuel reaction chamber of a char burning engine as an insulating layer, and through which the primary air passes to be preheated therein. By thusly preheating the primary air and insulating the char fu... | 07/02/1991 |
| 5027753 | Intake system of multi-cylinder internal combustion engine An intake system of a multi-cylinder interval combustion engine including a common inlet duct, first and second resonating ducts branched from the downstream end of the inlet duct, first and second resonating chambers leading from the first and second res... | 07/02/1991 |
| 5027754 | Non-return valve of the flap type for flow concentration A one-way flap valve, particularly for induction pipes of cylinders of internal combustion engines of vehicles, comprising a number of modular passage units having substantially curved base walls and having internal dividers parallel to the side walls, ca... | 07/02/1991 |
| 5027755 | Wobble plate internal combustion engine A multi-cylinder wobble plate engine includes a two-part wobble plate, wherein an inner part is fixedly mounted to an elongate longitudinally aligned main shaft, with an external portion of the wobble plate fixedly mounted relative to a surrounding housin... | 07/02/1991 |
| 5027756 | Nutating spider crank reciprocating piston machine A reciprocating piston machine in the form of a barrel engine has angularly-spaced pistons directly centrally linked by wrist pins to radially extending branches of a spider obliquely journalled for nonrotational nutation on a Z-crank portion of a rotatio... | 07/02/1991 |
| 5027757 | Two-stroke cycle engine cylinder construction A cylinder for an internal-combustion two-stroke engine, having multiple intake ports, multiple intake valve ports and multiple exhaust ports. The cylinder enables a two-stroke engine to run on gasoline without premixing it with lubricating oil and, due t... | 07/02/1991 |
