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| Number | Title | Issue Date |
| 4261207 | Fluid pressure-sensing device A device for sensing and/or measuring fluid pressure which includes a pressure-sensing tube elongating as a function of fluid pressure therein, a non-expanding member connected to the tube and extending in generally parallel relation thereto and terminati... | 04/14/1981 |
| 4249732 | String pre-stretching apparatus and method for racket stringing machine A racket stringing machine having a racket head holding fixture and a carriage and string clamp mounted for reciprocation toward and away from the fixture for engaging a string drawn through a racket head mounted on the fixture for tensioning of the strin... | 02/10/1981 |
| 4248896 | Process for baking bread A process for baking bread by separating a portion of the flour to be used into a wet gluten phase and a starch slurry phase, converting the starch slurry phase into sugar, combining the wet gluten phase and the sugar into a dough including the remaining ... | 02/03/1981 |
| 4245496 | Portable material hardness tester A portable hardness tester including a surface sensing member yieldably mounted for engagement with the surface of material to be tested and a penetrator yieldably mounted adjacent the sensing member for joint contact with the surface; manually applied me... | 01/20/1981 |
| 4243259 | Pet feces pick-up device A device for easy, clean and sanitary picking up and disposal of pet feces, the device being a trough-like member having opposed sides and dimensioned for insertion into the open end of a bag with the bag draped over the sides to define a concave fece rec... | 01/06/1981 |
| 4241826 | Conveyor assembly support structure and high strength tubular beam therefor A conveyor assembly support structure and high strength tubular beam free of debris trapping surfaces is disclosed. The conveyor assembly support structure includes a plurality of trapezoidal beams having sloped top walls, vertical side walls and a horizo... | 12/30/1980 |
| 4239246 | Rigid chuck assembly A chuck assembly for rigidly gripping an elongated workpiece, and particularly concrete reinforcing bars, is disclosed. The chuck assembly is designed for use in a machine tool, such as a thread mill, to enable threading of the ends of reinforcing bars. T... | 12/16/1980 |
| 4238104 | Energy absorbing motor mount assembly An energy absorbing motor mount assembly is disclosed in which a mounting element, including an arm having an enlarged head portion, is mounted for reciprocation in fore and aft directions inside a containment housing. Resiliently displaceable energy abso... | 12/09/1980 |
| 4233853 | Belt pulley A belt pulley which is designed for marketing as a group of standard component parts adapted for customized assembly by the user to meet individual pulley requirements as to size, load capability, etc. The parts include a shaft, a plurality of disc-shaped... | 11/18/1980 |
| 4231914 | Polyurethane-based binder system for the production of casting molds or cores Producing casting molds by blending flowable, granular material such as sand with a binder system including reactants to form polyurethane, i.e., polyisocyanates and polyols, and a solvent consisting of an ester having as its acid component an aliphatic d... | 11/04/1980 |
| 4230020 | Integral servo steering gear with rack transmission Hydraulic servo steering gear having a cylindrical, double-acting working piston connected to a steering shaft by a rack-and-sector gear connection, especially for motor vehicles comprises a piston-and-sleeve type control mechanism arranged in the working... | 10/28/1980 |
| 4223932 | Mechanic's lifting device A mechanic's lifting device comprising a circular ring-shaped supporting member having an annular load-bearing wall dimensioned for engagement by a lifting hook or the like. A plurality of threaded studs are mounted on and extend radially outward from the... | 09/23/1980 |
| 4223734 | Process of breaking and rendering permeable a subterranean rock mass The process of the present invention involves the following steps: producing, as by hydrofracing, a substantially horizontal fracture in the subterranean rock mass to be processed; emplacing an explosive charge in the mass in spaced juxtaposed position to the ... | 09/23/1980 |
| 4222541 | Ladder tray support attachment A demountable ladder tray support is disclosed which allows a tray for holding tools, paint brushes, paint and the like to be carried adjacent to the side rail of a ladder at any height desired by the user. The ladder tray support is mounted by means of a... | 09/16/1980 |
| 4222684 | Method of driving sheet piles into a rock substratum Problems arise when erecting a sheet pile on rock substratum and subsequently anchoring the piles. If a channel is blasted, this has the draw-back that the over burden has to be initially cleared prior to blasting and then replaced subsequently. In additi... | 09/16/1980 |
| 4220219 | Lightweight muffler and method for muffling noise A lightweight muffler and method for muffling a noise component of a stream of gases is disclosed. The muffler includes a chamber in which gases are directed side-by-side streams flowing in opposite directions. The streams are in contact with each other f... | 09/02/1980 |
| 4219738 | Turbine inlet temperature control apparatus and method Apparatus and method for setting, controlling, and maintaining a given turbine inlet temperature in a gas-driven turbine and AC generator driven thereby having the generator output connected to a fixed frequency AC infinite bus. The method comprises provi... | 08/26/1980 |
| 4218072 | Vehicle stabilizer A stabilizer for a vehicle having a chassis and transversely-positioned wheel supports mounted for vertical movement relative to the chassis. The stabilizer has a pair of levers and means for pivoting these levers to the chassis about horizontally spaced ... | 08/19/1980 |
| 4217949 | Core for the making of castings equipped with slender ducts In foundry manufacture of metallic castings it is customary to employ inserts to form elongate ducts whether rectilinear curved or branched ducts and whether of regular cross-section or varying cross-section, including enlarged cavities. A core insert is ... | 08/19/1980 |
| 4214879 | Degassing apparatus A degassing apparatus which has a degassing head from which extends a tube; a shaft is rotated in the tube; a screw conveyor above intake holes of the tube conveys drill mud upward against a deflector disc at the open top of the tube; three rows of inward... | 07/29/1980 |
| 4213941 | Solvent immersion extractor The immersion extractor is designed for use with a solid material containing an extractable component and includes a plurality of adjacent chambers each formed to contain a liquid solvent bath for extracting the component from the material and a continuou... | 07/22/1980 |
| 4209173 | Crossword puzzle game equipment Crossword puzzle game equipment is disclosed which includes a game board having an array of columns and rows of side-by-side spaces that are sequentially numbered but do not define a puzzle pattern. The game equipment further includes a clue book having a... | 06/24/1980 |
| 4208701 | Luminous toy A luminous toy, including a light source and an elongated hollow member formed of translucent material extending therefrom for receiving light longitudinally through the member, and an elongated sinuous strip of light-reflecting material mounted interiorl... | 06/17/1980 |
| 4208077 | Continuous contact ball and roller bearing A bearing composed of concentric radially spaced circular inner and outer races confined in a common plane for relative rotation by sets of rolling members having rolling contact with the races and with each other, the parts being dimensioned to provide s... | 06/17/1980 |
| 4205610 | Shale oil recovery process A process of producing within a subterranean oil shale deposit a retort chamber containing permeable fragmented material wherein a series of explosive charges are emplaced in the deposit in a particular configuration comprising an initiating round which f... | 06/03/1980 |
| 4205658 | Heat transfer panel A heat transfer panel is disclosed which can be used as a solar energy collector or as a heat rejecting and absorbing panel. The heat transfer panel employs a thin, flexible membrane mounted to the panel in a distorted condition to define, in part, a plur... | 06/03/1980 |
| 4206313 | Pipe cleaning nozzle A nozzle useful for cleaning deposits from the interior wall of a pipe, the nozzle including a body having a hose connection for accepting a stream of high pressure fluid and having at least three skids to hold the body away from the interior pipe surface... | 06/03/1980 |
| 4205264 | High impedance electrical testing instrument for AC and DC voltage detection and continuity testing An electrical testing instrument including a high gain amplifier circuit having a pair of inputs, one comprising a probe and the other covered at least in part by a non-conductive material and being adapted for manual engagement by the user for completing... | 05/27/1980 |
| 4202335 | External catheter drainage device An externally applied penile catheter providing an inflatable air chamber extending over and around the penile glans and shaft and applying a uniform pressure thereto for holding the catheter in place and being connected to one end of the drainage tube, t... | 05/13/1980 |
| 4200131 | Device for carrying golf clubs There is disclosed a device for carrying golf clubs which includes a molded upper plate having individual holes for the handles and shafts of the clubs to be carried and having contoured surfaces coinciding with the loft angle of golf club irons so that e... | 04/29/1980 |
| 4199836 | Paint pan A paint pan including a shallow pan portion terminating in a reservoir, the reservoir having a common wall with the pan portion, the common wall sloping such that the bottom of the reservoir is narrower than the top, and the sloping wall including a passa... | 04/29/1980 |
| 4193585 | Handrail assembly for curved staircase A handrail assembly for a curved staircase, which includes baluster means having support elements adapted to connect to a handrail with connectors such as screws and a handrail formed from stranded aluminum cable coated with a continuous layer of heat-sea... | 03/18/1980 |
| 4189412 | Sealant composition A sealant composition particularly for use in joints between adjacent concrete slabs and deck membranes which includes coal tar pitch, vinyl chloride polymer, a solid, particulate filler and an additive mixture of a blend of petroleum-based aromatic disti... | 02/19/1980 |
| 4185650 | Method and apparatus for trouble-shooting and irrigation system A method and apparatus for trouble-shooting an irrigation system having a plurality of independently operable irrigation branches and an automatic controller for control of water flow in the branches is disclosed. A radio transmitter and a radio receiver ... | 01/29/1980 |
| 4179961 | Vertical band saw and feed table A band saw having a generally vertically oriented saw blade carrying frame mounted to a movable carriage is disclosed. The carriage is mounted in a horizontally extending guideway in the saw base by an arm which is cantilevered from the back side of the v... | 12/25/1979 |
| 4179994 | Suspended articulated chairlift mounting assembly A chair assembly mounting apparatus is disclosed which may be employed to mount a chair, gondola, platform, etc. to a hanger arm for use in a chairlift or the like. The apparatus provides a movable connection between the chair frame and hanger arm which r... | 12/25/1979 |
| 4179950 | Steering wheel cover A steering wheel cover comprising an annular band of soft, flexible material having a length dimensioned for distension around a steering wheel rim and a width dimensioned for wrapping around said rim, juxtaposing opposite side edges of the band. The band... | 12/25/1979 |
| 4175490 | Process for producing an underground zone of fragmented and pervious material The subterranean fragmented and pervious zone is formed beneath an overburden which, as a first step of the process, is lifted as a substantially monolithic land mass to produce a void space and a free space proximate the rock to be fragmented, the raised... | 11/27/1979 |
| 4169050 | Buoyant contact surfaces in waste treatment pond A wastewater treatment and reclamation system using natural ecological processes consisting of ponds; greenhouse pond cover; pollution-consuming, floating aquatic plants; high-surface-area, submerged, activated bio-web substrates for greatly increasing fi... | 09/25/1979 |
| 4167915 | High-pressure, high-temperature gaseous chemical apparatus Apparatus and method for growing oxide on silicon wafers or silicon-coated wafers or other semiconductors for the semiconductor industry wherein the oxide growth is produced under high pressure and high temperature conditions within a reaction chamber by ... | 09/18/1979 |
