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| Number | Title | Issue Date |
| 4998774 | Stool seat A stool seat includes an impermeable top wall having an upper surface upon which a user sits and a peripheral edge. The top wall is sealingly joined along its peripheral edge to an impermeable bottom wall and is adapted to support itself in spaced relatio... | 03/12/1991 |
| 4998373 | Double hook lure A double hook lure includes a pair of shanks having piercing ends defined by sharp tips and their associated barbs, the shanks having first bends causing them to diverge from one another in a shank plane from a lead head in which their other ends are embe... | 03/12/1991 |
| 4995114 | Universal eye patch An improved universal eye patch which may be successfully applied to either the right or the left eye. The eye patch comprises a central portion, preferably non-yielding, which serves to provide support to an underlying pad, and wing portions that extend ... | 02/26/1991 |
| 4994467 | Treating autism and other developmental disorders in children with NMDA receptor antagonists A method is provided for treating autism and other pervasive developmental disorders in children by the administration of a therapeutically effective amount of a N-methyl-D-aspartate (NMDA) receptor antagonist. The NMDA receptor antagonist is chosen from ... | 02/19/1991 |
| 4988253 | Reciprocating conveyor loader A conveyor loader for loading railroad cars or the like with coal or other crushed, ground or particulate material includes a support providing a guideway extending along the line of railroad cars and a line of segmented carriages rollably mounted upon th... | 01/29/1991 |
| 4988243 | Spring-loaded center A center for maintaining a cutting tool, such as a tapping tool or reamer, in axial alignment with a hole to be worked upon includes an elongated body and a centering pin received by a cavity defined in the body for movement between retracted and extended... | 01/29/1991 |
| 4987756 | Vehicle switch with rotation preventing means A key-manipulatable switch for a motor vehicle ignition system having a housing and a cylinder mounted within the housing for rotational and axial movement with respect thereto includes cooperating components which prevent the rotation of the cylinder cou... | 01/29/1991 |
| 4980833 | Airplane take-off monitor with learning feature A take-off performance monitor uses a sensor to produce a movement signal proportional to the movement of an aircraft during a take-off roll and, for each take-off, historical data is generated and stored based on the movement signal. An analyzing unit of... | 12/25/1990 |
| 4979934 | Card feeding and folding apparatus An apparatus for feeding and folding cards from a card supply to a work surface at which the cards are utilized in a folded configuration in a work cycle. The cards are delivered to the work surface by a delivery mechanism and a folding device folds the c... | 12/25/1990 |
| 4979448 | Apparatus and method for recovery of constituents and heat from fluidized bed combustion An apparatus and method for recovering constituents and/or heat energy from a fluidized bed combustion process utilizes a single vessel which combines a combustor for fluidized bed combustion of a chemical mixture fed therein and a heat exchange section. ... | 12/25/1990 |
| 4979255 | Grill scrubbing and scraping apparatus An apparatus for scrubbing and scraping the surface of a grill or the like utilizes a rotating head having a first member to which a scrubbing pad is attached and a second member to which a scraper is attached. The second member is movably attached to the... | 12/25/1990 |
| 4977805 | Edging apparatus An edging apparatus edges a wood board to achieve a desired rounding effect under a rounding rule of the lumber industry. A positioning apparatus positions and holds two edging saws, and the positions of the saws are initially controlled by an operator wh... | 12/18/1990 |
| 4977422 | Apparatus for transporting flat sheets, especially photosensitive sheet materials The methods and apparatus disclosed herein provide commercially viable means to selectively improve the input and output characteristics of photosensitive materials, especially the output contrast variables. The present invention allows commercially avail... | 12/11/1990 |
| 4973339 | Pressure swing absorption process and system for gas separation A pressure swing adsorption process and system for generating gaseous streams which are high in oxygen purity and high in nitrogen purity utilize a first adsorption zone adapted to principally adsorb oxygen from a feed stream containing oxygen, nitrogen a... | 11/27/1990 |
| 4970547 | System and method for generating and codifying photo cropping and enlargement information A system and method for generating and codifying cropping and enlargement information for a rectangular photograph utilizes at least one transparent overlay and a grid board for underlying the overlay. The overlay includes markings providing a plurality o... | 11/13/1990 |
| 4967995 | Combination cover and dispenser for an ice cube tray A cover for an ice cube tray includes a top portion for covering the top of an ice cube tray and sidewalls joined to the top portion which permits the top portion to be raised to a position at which the top position is spaced above the tray top. The cover... | 11/06/1990 |
| 4967433 | Foam body support member having elongated chevron-shaped convolutions A body support member fabricated of an open-cell polyurethane foam sheet, such sheet having a plurality of chevron-shaped ridges projecting from one flat surface of the sheet and extending between opposite side edges of the sheet. Each chevron-shaped ridg... | 11/06/1990 |
| 4961391 | Thermal treatment process for organically contaminated material A thermal treatment process employs an indirectly fired rotary kiln in which matrix material contaminated with organic substances such as dioxins, PCBs, PAHs, fuel oils, and the like is heated as the material is advanced through the kiln to cause componen... | 10/09/1990 |
| 4959412 | High shear tackifier resins A method for the preparation of an adhesive with an improved high temperature shear strength is disclosed. The method comprises the steps of blending a styrene homopolymer with a tackifier resin to form a resin blend and combining the resin blend with an ... | 09/25/1990 |
| 4959312 | Full spectrum mutagenesis A method is disclosed for in vitro mutagenesis of a target DNA sequence which generates mutants containing a single randomly-located region in the target sequence with random substitution mutations. The method includes the production of a supply of a temp... | 09/25/1990 |
| 4959124 | Method of bleaching kraft pulp in a DZED sequence A method of enhancing the quality of a pulp which has been subjected to a chlorine-based bleaching agent, by subjecting the chlorinated pulp to ozonation prior to an extraction stage in the bleaching sequence. The improved pulp of the present invention in... | 09/25/1990 |
| 4955720 | On-line fiber orientation distribution measurement The present invention discloses a method and apparatus for the on-line measurement of fiber orientation in a translucent sheet. To measure the fiber orientation, coherent light is directed onto one surface of the sheet in a pattern of sufficient intensity... | 09/11/1990 |
| 4955359 | Furnace with counterflow heat exchange means A forced-air furnace for burning gas or fuel oil or waste oil utilizes relatively few components and effectively heats air for space-heating purposes. The furnace includes a substantially enclosed, elongated housing having an air intake and an air dischar... | 09/11/1990 |
| 4955242 | Conveyor belt cross-stream sampling system and associated method A method and apparatus are disclosed for cross-stream samnpling of bulk material from a conveyor belt. The apparatus includes a sampler movable across the conveyor belt for segregating a cross-stream increment of bulk material from the belt and ejecting t... | 09/11/1990 |
| 4953971 | Interactive image projection apparatus An interactive image projection apparatus for the projection of computer generated images on a projection surface in cooperation with a light source and projection optics for projecting a beam of light from the light source onto the projection surface. Th... | 09/04/1990 |
| 4951956 | Hand grip for a wheelbarrow A hand grip assembly for a wheelbarrow handle shaft includes a handle having an elongate grip configured to be gripped by a hand along its length and along a grip axis. The handle is pivotally mounted on the handle shaft of the wheelbarrow for movement ab... | 08/28/1990 |
| 4948651 | Burn sheet A burn sheet comprising a plurality of layers laminated one to another and including a liquid-permeable top layer, a liquid-absorbent layer and a strength-imparting scrim layer. The scrim layer comprises an open pattern of crossing multifilamentary yarns ... | 08/14/1990 |
| 4947323 | Method and apparatus for measuring small spatial dimensions of an object A method and apparatus are disclosed for measuring spatial dimensions of an object. The object is positioned between a radiation source and a radiation sensitive surface, such as between an X-ray unit and an X-ray film. The distance between the object and... | 08/07/1990 |
| 4945934 | Method and apparatus for processing and transporting sheet materials The present invention provides an apparatus and method for processing a sheet material, for e.g. a photosensitive sheet material, with a flowable process substance. The flowable process substance is distributed via a pliable web which has defined on one o... | 08/07/1990 |
| 4944818 | Composite roofing substrate panel A panel for use as a substrate for a torch-down modified bitumen roof membrane is disclosed. The panel comprises a board of combustible material with a pre-applied noncombustible facer sheet. The facer sheet protects the board from burning during installa... | 07/31/1990 |
| 4944509 | Weightlifting backpack The invention is a rigid frame weightlifting exercise device that is worn by the user during weight training. The device accepts and securely holds standardized weights to the upper body of the wearer. The device is attached to the body by three straps, t... | 07/31/1990 |
| 4942863 | Thermoelectric generator for use in a heater and method of installation A thermoelectric generating assembly for replacement of a heat exchanger mounted in a fuel-burning heater having electricity-consuming components includes a thermoelectric generator for supplying the electrical power requirements of the heater components ... | 07/24/1990 |
| 4942162 | Topical treatment of seborrheic dermatitis with ketoconazole A method is provided for treating psoriasis and seborrheic dermatitis in humans by topical application of an effective, lesion reducing amount of ketoconazole to affected areas.... | 07/17/1990 |
| 4940581 | Platelet cryopreservation A method for preserving blood platelets by freezing the platelets in contact with a cryoprotectant solution containing a sufficient quantity of prostacyclin for the substantially complete inhibition of platelet function and having a pH which promotes the ... | 07/10/1990 |
| 4938785 | Gas-liquid separation The specification discloses an apparatus and method for separating liquid droplets carried in a gas wherein the gas is conducted at a subsonic velocity below about Mach 0.7 through a conduit, the walls of which define successive, generally oppositely dire... | 07/03/1990 |
| 4934934 | Dental file/reamer instrument A dental instrument adapted to be used as a dental file and dental reamer for removing dead or damaged tissue from the root canal of a tooth. The dental compactor instrument is formed with a tapered shank having at least two helical flutes defining at lea... | 06/19/1990 |
| 4932296 | Apparatus for cutting a continuous strip of limp material An apparatus and method for cutting segments from a strip of limp sheet material advanced lengthwise along a planar support surface utilizes a finger mechanism for ensuring that following severance of the strip from the remainder thereof, the remainder of... | 06/12/1990 |
| 4931547 | Monoclonal antibodies to legionella Monoclonal antibodies demonstrating reactivity to genus-specific epitopes present on outer membrane proteins of bacteria of the genus Legionella and hybridomas for secreting the antibodies are disclosed.... | 06/05/1990 |
| 4928957 | Exercise apparatus for actively exercising the upper body while passively exercising the lower body An exercise apparatus for bending the user's legs by the exercise of muscles in the user's upper body includes a stationary frame, a seat mounted upon the frame for forward and rearward movement relative thereto and hinged leg support sections which fold ... | 05/29/1990 |
| 4927987 | Directional control device A hand-held control device for use in controlling directional characteristics in apparatus, such as the direction of movement of video display images in electronic game machines, includes a body having an opening and four depressible switches regularly sp... | 05/22/1990 |
