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Felix Hoffmann, a German chemist, was searching for something to relieve his father's arthritis. In doing so, he "rediscovered" acetylsalicylic acid and in 1900, patented a stable process for developing it. Hence, we have aspirin.
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| Number | Title | Issue Date |
| 5081794 | Sander with orbiting platen and abrasive The invented Sander with Orbiting Platen and Abrasive includes a platen, an abrasive secured to the platen, and a motor connected to the platen to move the platen and abrasive in an orbit or circular pattern. The motor is connected to the platen by a belt... | 01/21/1992 |
| 5081795 | Polishing apparatus A polishing apparatus for polishing an object to be polished at a high flatness includes at least one plate with at least one object to be polished secured at an underside thereof, a head section surrounding the plate with a predetermined gap therebetween... | 01/21/1992 |
| 5081796 | Method and apparatus for mechanical planarization and endpoint detection of a semiconductor wafer A method and apparatus for mechanical planarization and endpoint detection of a semiconductor wafer or the like. The apparatus includes a polishing head for rotating the wafer under a controlled pressure against a rotating polishing platen. The polishing ... | 01/21/1992 |
| 5081797 | Integrated buffing and grinding system The present invention provides an integrated buffing and grinding system. The system includes a first conveyor for transporting an article to a grinding station. The article is grasped by a robot and brought into and out of contact with an abrasive surfac... | 01/21/1992 |
| 5081798 | Grinding body and manufacturing procedure therefor A grinding foil comprising an abrasive medium on a flexible strip steel foil with a thickness of 0.05 to 0.25 mm and due to the properties of the strip steel foil has good thermal conductivity, thermal stability, tensile strength and selfadhesive properti... | 01/21/1992 |
| 5081799 | Blasting apparatus Conventional industrial pressure blasting apparatus is modified to allow a controlled pressure on the blast pot that is greater than the pressure on the line where the media and air are mixed for conveying the mixture to the nozzle and then to the workpie... | 01/21/1992 |
| 5081800 | Vehicular device designed to operate in enclosed canals A vehicular device designed to operate in enclosed canals includes a swivel head (25) which is connected by means of a rotatable and/or vertically adjustable boom (manipulator arm) (2) to the front end of a main chassis (3). The main chassis is fitted wit... | 01/21/1992 |
| 5081801 | Blasting wheel apparatus and blades therefor The invention provides a blasting wheel apparatus having a wheel with a plurality of like blade elements having generally an "I" shape in cross section including a base having a hooking member at one end and a lug at the opposite end thereof extending dow... | 01/21/1992 |
| 5081802 | Method and apparatus for lining manhole assemblies and the like Cast members are provided with a liner assembly to protect the cast material from corrosion. The liner assembly is formed of a plurality of curved liner sections having integral joining flanges. A resilient compressible gasket is arranged between opposing... | 01/21/1992 |
| 5081803 | Pit area for a race track A pit area for a race track a stall has first and second sidewalls. A first end wall is adjacent a selected one of the first and second sidewalls and extends toward the other of the first and second sidewalls defining an entrance to the stall. A second en... | 01/21/1992 |
| 5081804 | Power line pylon and lamp post A post construction kit for constructing a post implanted in a base terrain which includes a first post section adapted for implantation in the base terrain, at least one other post section adapted for interconnection with the post section to be implanted... | 01/21/1992 |
| 5081805 | Precast concrete building units and method of manufacture thereof A precast concrete building unit of half-room configuration with a floor or ceiling defining web portion and opposite half-wall defining flange portions is cast by pouring concrete over steel latticework in an inverted U-shaped cavity of a wheeled mold fo... | 01/21/1992 |
| 5081806 | Building structure foundation system A foundation system for buildings and other structures absorbs both horizontal and vertical displacement from seismic earthquakes. The system comprises a fixed support base with a hardened three dimensional curved member located between a hardened dished ... | 01/21/1992 |
| 5081807 | Lintel block construction Interlocking building blocks are disclosed which are designed to be used to form a lintel over a doorway, window or other opening in a building structure. The building blocks of the present invention are designed to interface with generally rectangular cu... | 01/21/1992 |
| 5081808 | Partition with enclosure An enclosure for a movable furniture partition system is provided which includes an elongate housing disposed at an edge portion of a panel member. This housing contains electrical conduits and outlets or similar devices and defines a trough with a top op... | 01/21/1992 |
| 5081809 | Demountable wall panelling A demountable wall panelling system comprises a plurality of framework sections that can be placed along a line along which panelling is required and be engaged with one another for forming a structure on to which cladding panels can be releasably engaged... | 01/21/1992 |
| 5081810 | Building panel A sandwich-type structural panel is formed by a core of insulating material having opposing skins or face surfaces bonded to opposing planar sides of the core and defining rectangular recesses at each end of the panel. The panel is further characterized by elo... | 01/21/1992 |
| 5081811 | Self-locking nut mechanism A self-locking nut mechanism is operable to be mounted on a bolt element to secure structural members together and includes a nut body having a cylindrical portion and a flange portion. A through hole in the nut body has a first hole portion with one diam... | 01/21/1992 |
| 5081812 | Ceiling devices This invention relates to devices and methods for installing ceilings made from tiles that are supported by a suspension grid that is not visible from the underside of the ceiling. One embodiment comprises channels that form the suspension grid, channel w... | 01/21/1992 |
| 5081813 | Metal wall frame structure A metal wall frame structure for a building which includes a horizontal top plate, a horizontal bottom plate and a number of vertical studs. The top and bottom plates are identical each being of U-shaped channel section, having side walls and a base, and ... | 01/21/1992 |
| 5081814 | Lath panel and method of manufacture A reinforced lath panel typically mounted to a vertical frame on which plaster or other plastics can be supported in a structural unit and includes at least one marginal rib having a plurality of interconnected layers and a rounded outer edge with a mesh ... | 01/21/1992 |
| 5081815 | Mechanized shingle applying apparatus Apparatus for applying shingles to a roof having a guidetrack connected to the roof, a pair of guiderods slidably connected to the guidetrack in perpendicular extension therefrom, a primary carriage mounted to the guiderods for movement parallel the guide... | 01/21/1992 |
| 5081816 | Apparatus for receiving blister packs from a product packaging line and for inserting these blister packs into cartons An apparatus, located downstream of a packaging line for packaging of blister packs, works in conjunction with a carton ready-making line and comprises three devices positioned along a conveyor having an upper surface fitted with crosspieces to delimit se... | 01/21/1992 |
| 5081817 | Carton handle apparatus A handle taping system provides a mechanism for a taping station that is actuated by the passage of any of a variety of articles or products being conveyed therepast. A length of a first pressure sensitive carrier tape, whose length is automatically deter... | 01/21/1992 |
| 5081818 | Method to package sections and rotary packaging machine that employs the method Method to package sections either in normal layers or in alternate right-side-up/overturned layers, the layers being fed from determined layers, whereby two already butted layers, one having a number N of sections and the other having a number N-1 of sect... | 01/21/1992 |
| 5081819 | Method and apparatus for manufacture and packaging of filter packs for use in a brew basket A packaging machine and a method for continuous forming of filled packages from relatively unstretchable roll stock of crinkled heat sealable filter paper. A series of pouch forming drum sockets are provided in an outer surface of a revolving drum and the... | 01/21/1992 |
| 5081820 | Method and an arrangement for the application of an end plate to a packing container body A method for applying an end plate to a container body includes applying a heated end blank made of deformable material to one end of the container body and creating a pressure difference between the two sides of the end blank to seal the edges of the end... | 01/21/1992 |
| 5081821 | Method and apparatus for manipulating stacks of paper sheets in wrapping machines Stacks of paper sheets are transported from a sheeter into a wrapper by the upper reach of an endless infeed conveyor. The front end faces of successive stacks catch up with and are decelerated by successive flights on an endless second conveyor which is ... | 01/21/1992 |
| 5081822 | Automatic caplet filler An automatic capsule filling apparatus includes a body holding ring and a superposed cap holding ring mounted on a ring carrier. The body holding ring includes rows of body cavities for holding a body portion of a capsule. A vacuum line is connected to an... | 01/21/1992 |
| 5081823 | Multiple article stacking and packaging apparatus A device for stacking and packaging a series of articles includes a rotating wheel having a multiple number of dividers thereon. The dividers being selectably projected from the periphery of the wheel in various space relationships for defining the size o... | 01/21/1992 |
| 5081824 | Film unwinding carriage for a packaging machine A carriage for unwinding packaging film and incorporation in a packaging machine, comprising a stand carrying a supporting shaft for a film reel and a roller device carried by the stand and comprising two main rollers including upstream and downstream rol... | 01/21/1992 |
| 5081825 | Envelope flap unfolder and enclosure inserter with jam-clearing access Apparatus is disclosed for flapping envelopes and inserting enclosures into the flapped envelopes. The apparatus is constructed so that parts thereof may be easily moved to substantially fully expose the enclosure feed path, as well as the envelope flap u... | 01/21/1992 |
| 5081826 | Universal sulky hitch A hitch for connecting a sulky shaft to a harness girth on a horse comprises a pair of brackets affixed to the girth, with a pivotable yoke pivotally mounted between the brackets on a vertical bolt. A horizontal bolt, extending through arms of the yoke, p... | 01/21/1992 |
| 5081827 | Tobacco spearing system An oval track guides plates with tobacco stickholders thereon around the track so that workers at stations around the track can impale tobacco plants on the tobacco sticks in the stickholders as they pass by or as they are stopped momentarily in front of ... | 01/21/1992 |
| 5081828 | Method of accessing adjacent harvesting units of a cotton harvester A system for mounting and supporting harvesting units on a forward end of a cotton harvester frame to allow them to be slidably moved relative to each other and laterally along an elongated tool bar structure. The tool bar structure is pivotally connected... | 01/21/1992 |
| 5081829 | Powered edger On golf courses it is common practice for the golf club to provide carts for the golfers who wish to use them to go from one golfer's stroke to the next. When tournaments are held large crowds walk along one side of the golf course fairways of the course ... | 01/21/1992 |
| 5081830 | Method of restoring exhaust gas temperature margin in a gas turbine engine The present invention discloses a method of restoring exhaust gas temperature (EGT) margin in a gas turbine engine equipped with a modulating valve and other hardware for shrinking the turbine case relative to the turbine rotors. The method involves incre... | 01/21/1992 |
| 5081831 | Scramjet combustor A scramjet combustor for a hypersonic (Mach number greater than about 5.5) flight vehicle. The combustor housing has two spaced-apart, generally opposing, and longitudinally extending walls. Each wall has an aft-facing step. Fuel (such as hydrogen) is inj... | 01/21/1992 |
| 5081832 | High efficiency, twin spool, radial-high pressure, gas turbine engine A low cost, low fuel consumption, twin-spool turbine engine with external power take-off essentially exclusively from the high pressure (H.P.) spool uses a radial in-flow turbine and a centrifugal compressor in the H.P. spool and a flow-optimized L.P. spo... | 01/21/1992 |
| 5081833 | Device for keeping the annular outlet mouth of the gas volute always centered about the nozzle assembly in a gas turbine A device for keeping the annular outlet mouth of the gas volute always centered about the nozzle assembly in a gas turbine, consisting of two diametrically divided retaining rings embracing said annular mouth, the lower half-ring having an inner radius gr... | 01/21/1992 |
