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| Number | Title | Issue Date |
| 4856250 | Sleeper for the attachment of covering material to a surface A sleeper is disclosed comprising a guideway, a resilient strip, a nailing bed and a spring. The guideway is an elongated channel of C-shaped cross-section with three fully closed faces and a partially open face. A plurality of the guideways are fastened ... | 08/15/1989 |
| 4856389 | Device for setting fastener elements and pins The invention relates to a device for setting fastener elements or pins, particularly to a screw-setting device. The device comprises a housing in which a retainer shaft for a setting tool is mounted at least for axial displacement, at least one advance d... | 08/15/1989 |
| 4857051 | Breastpump A breastpump is provided with a valve mechanism that closes a collection chamber when a vacuum is applied to a hood member and opens the collection chamber when the vacuum is removed. The valve mechanism is removably attached to the collection chamber for... | 08/15/1989 |
| 4854792 | Bracing and cushioning system and method for transporting massive loads A system and method for bracing and cushioning the impact of movable massive loads during sudden deceleration of a transport vehicle, such as created during humping of railway cars. Resilient elastomeric pads separate adjacent objects of the load with the... | 08/08/1989 |
| 4851746 | Sensing apparatus for automatic door A sensing apparatus for use with an automatic door operator and operator control logic responsive to door control signals for controlling the opening and closing operations of a swinging door is disclosed. The disclosed apparatus includes a plurality of i... | 07/25/1989 |
| 4851264 | Reinforcement of refractories by pore saturation with particulated fillers A process for reinforcing porous refractories with fillers, such as carbon particles, is provided. First, filler particles are mixed with a liquid resin to produce a liquid mixture. The mixture is allowed to seep into the pores of the refractory, preferab... | 07/25/1989 |
| 4852029 | Automated material classification apparatus and method An automated method and apparatus for grading pre-cut lumber products according to selected physical properties thereof such as modulus of elasticity (MOE) and modulus of rupture (MOR) are disclosed. A conveyor transports boards to be graded to an automat... | 07/25/1989 |
| 4849674 | Electroluminescent display with interlayer for improved forming An electroluminescent D.C. display panel has a transparent substrate, transparent anodes, a metal oxide interlayer, an electroluminescent powder phosphor, and cathodes formed in stacked relation on the substrate. The metal oxide interlayer allows the pane... | 07/18/1989 |
| 4848196 | Quick release and automatic positive locking mechanism for socket wrenches and extension bars for socket wrenches A quick-release and positive locking mechanism adapted for use on tools for receiving removable sockets, and particularly adapted for use on extension bars of the type frequently employed with socket wrenches. One form of the mechanism comprises a drive s... | 07/18/1989 |
| 4849261 | Pattern forming saturator and method A saturator of the type comprising a chamber situated between a chamber defining element and a mandrel, in which a web is moved between the chamber defining element and the mandrel to impregnate the web with a saturant contained in the chamber includes at... | 07/18/1989 |
| 4846518 | Gripping device for a doll's extremity A gripping device for a doll's extremity has a holder, resilient material retained in the holder, and a handle. An object is pushed into a slot defined by the resilient material. The resilient material grasps the object and retains it in the holder. The h... | 07/11/1989 |
| 4843237 | Photoelectric length and angle measuring device A measuring device for measuring the relative position of two objects includes a graduation of a graduation support connected with one object and a scanning device connected with the other object. The scanning device scans the graduation with light. To el... | 06/27/1989 |
| 4842650 | Polymer modified cement compositions Various improvements for polymer modified cementitious compositions are disclosed. A dry mix for making a polymer modified cementitious composition especially useful as a stucco material, which includes a dry, redispersible, non-reemulsifiable polymer at ... | 06/27/1989 |
| 4842250 | Line reeving system for earth drilling machine An earth drilling machine includes a crown block assembly, a travelling block assembly and a drawworks. The drawworks includes a drum which rotates about a drum axis. The drum axis is oriented at right angles to a fast line plane defined by a fast line sh... | 06/27/1989 |
| 4841696 | Size-adjustable window insert assembly A window insert assembly is disclosed having a spring-biased frame construction used to secure the insert within existing window frames of varying size. The insert assembly is particularly useful for mounting interiorly of an existing window pane to form ... | 06/27/1989 |
| 4838394 | Adjustable shock absorber and system An adjustable shock absorber system includes a plurality of shock absorbers, the damping characteristics of which are controlled by a hydraulic control circuit. Each of the shock absorbers includes an adjustable flow restrictor that is controlled by a hyd... | 06/13/1989 |
| 4837566 | Drive circuit for operating electroluminescent display with enhanced contrast An improved drive circuit for operating an electroluminescent display includes a circuit for biasing column and row drivers to maximize the energization voltage for illuminated pixels without reducing the contrast of the display. Interface circuitry is al... | 06/06/1989 |
| 4836235 | Valve The disclosed tire valve includes an elastic valve body having a through passageway formed therein, with a constriction formed at an intermediate portion of the through passageway. A valve pin is provided with a gasket and is mounted to slide within the t... | 06/06/1989 |
| 4835546 | Electronic data recorder apparatus and method An improved electronic data recorder for use in a vehicle includes a housing having a pair of connectors. The housing encloses a modular converter, a printer module, a continuous roll of paper, a modular paper advance mechanism, conversion electronics, an... | 05/30/1989 |
| 4834955 | Chemical formulation and combined process for inhibiting deposition and corrosion in cooling water and gypsum scaling in flue gas desulfurization scrubber systems An inhibitor formulation for inhibiting corrosion and deposition of calcium phosphate, calcium carbonate, and silt in a cooling water system and calcium sulphate (gypsum) scaling in a flue gas desulfurization system. The inhibitor formulation comprises po... | 05/30/1989 |
| 4828694 | Filter with filtration envelope spacing means A fluid filter for use in a fluid system wherein fluid is forced through the filter by a suction source connected to the filter outlet is disclosed. In addition to a housing defining a volume, with an inlet and an outlet, and a filtration media envelope i... | 05/09/1989 |
| 4826598 | Hermetically sealed transmission filter An automatic transmission fluid filter is disclosed, comprised of a metal base member, a plastic cover member attached to the base member, enclosing a volume. Filtration material inside the volume is interposed between an inlet and outlet to the filter. A... | 05/02/1989 |
| 4826555 | Method and apparatus for compressing a self-supported web An apparatus for processing a self-supporting web includes a rotatable mandrel and a stationary block member which defines a recess adjacent the mandrel. The recess is shaped to form a converging chamber between the mandrel and the block member, which con... | 05/02/1989 |
| 4826727 | Phosphorescent material for electroluminescent display, comprising silver sulfide in copper sulfide coating on phosphor particles and/or elemental sulfur in dielectric binder for phosphor particles Electroluminescent display panels comprising copper sulfide coated Zns:Mn phosphor powder, bonded in an organic dielectric binder, can be provided with increased useful lives by incorporating (1) silver in the copper sulfide coating on the ZnS:Mn phosphor... | 05/02/1989 |
| 4826151 | Push-up and hand walking exerciser There is disclosed an exercise device that aids in the performance of push-ups and hand walking exercises by elevating the feet about the hands while these exercises are being performed. This device has a rigid ankle support yoke that has two curved porti... | 05/02/1989 |
| 4823579 | Apparatus for cutting hollow pipes An apparatus for cutting spirally formed pipe is disclosed. This apparatus has two knives mounted on a boom to be positioned inside of the pipe. The inner knives have cutting edges that are adjacent the inner pipe surface and point in opposite directions.... | 04/25/1989 |
| 4824680 | Non-staling gum composition with improved wrappability A method of producing a sugar based chewing gum having good non-staling properties and improved wrappability is disclosed. The method includes the steps of mixing about 15 to about 35 parts by weight gum base with about 50 to about 80 parts by weight suga... | 04/25/1989 |
| 4823040 | Single-stage, two-phase of four-phase synchronous electric motor A stator of the planar magnetized rotor motor according to the invention comprises groups of polar parts and at least two control coils. On each side of the rotor, each group of polar parts surrounded by a coil is arranged adjacent to the groups which are... | 04/18/1989 |
| 4821816 | Method of assembling a modular drilling machine A drilling machine includes a drilling substructure skid which defines two spaced parallel skid runners and a platform. The platform supports a draw works mounted on a draw works skid, and a pipe boom is mounted on a pipe boom skid sized to fit between th... | 04/18/1989 |
| 4821814 | Top head drive assembly for earth drilling machine and components thereof A top head drive assembly for a drilling machine includes a wrench assembly used to make up and break out threaded connections. This wrench assembly is mounted for axial movement on rails of the top head drive assembly, and is positioned immediately under... | 04/18/1989 |
| 4821730 | Ultrasonic scanner and shock wave generator A device for spatial location and destruction of concretions in bodily cavities by application of pulsed ultrasonic shock waves generated by a shock wave transducer focussed on the concretion in question, the shock waves being transmitted to the patient b... | 04/18/1989 |
| 4821245 | Electromagnetic transducer An electromagnetic transducer for use in generating transient acoustic pulses in particular for medical purposes such as the destruction of kidney stones. The transducer comprises at least one pair of conductors, of which one is held against movement by a... | 04/11/1989 |
| 4819799 | Optical disc package A package for an optical disc and an optical disc sleeve includes upper and lower formed plastic sheets sized to receive and support therebetween the optical disc and the optical disc sleeve in side by side relationship. The lower sheet is shaped to suppo... | 04/11/1989 |
| 4819685 | Tubeless tire valve A tubeless tire valve has a one piece, integral valve body having a central passageway formed therein, wherein the passageway is formed of upper, central and lower regions. A one piece, integral valve pin has a head sized to fit in the upper region, a fir... | 04/11/1989 |
| 4819621 | Method for detection of cavitations during medical application of high sonic energy A method and apparatus are described for the detection of possible tissue injuries caused by cavitation during the medical application to a patient's body of high sonic energy which is generated extraneously by means of a sonic transducer for destruction ... | 04/11/1989 |
| 4821160 | Flanged louver construction A louver construction comprising a grid formed of cubes molded unitarily with a flange extending around the periphery of the grid. The cubes include a border row making up the periphery of the grid. The cubes in the border row have different dimensions th... | 04/11/1989 |
| 4818506 | Gypsum scale inhibitors for flue gas desulfurization systems Gypsum scale inhibitors useful under wet flue gas desulfurization (FGD) scrubber temperature and pH conditions. The gypsum inhibitors advantageously prevent or minimize gypsum scale formation and crystal growth in mist eliminator wash water and in the scr... | 04/04/1989 |
| 4817693 | Machine tool extension table and method for installing same An extension table for a machine tool of the type that includes a machine table that defines a reference plane includes a rigid, straight beam having a lower surface. A ledge is mounted to the lower surface of an outer portion of the beam to extend outwar... | 04/04/1989 |
| 4817538 | Construction system for shelves Construction system for shelves comprising shelves and rear panelling plates, and in which the shelves at their rear end are insertable in upright or wall mounted consoles from which the shelves are cantilevered. The consoles are hidden behind the vertica... | 04/04/1989 |
| 4818111 | Position measuring instrument A longitudinal position measuring device for measuring the relative positions of two objects comprising a housing, a measuring scale, and a scanning unit for scanning the measuring scale. The housing is attached to one of the objects and a scanning unit i... | 04/04/1989 |
