Did You Know...
...that two musicians were responsible for the invention of color print film? Fascinated by photography, Leopold Godowsky and Leopold Mannes worked together to produce an easy-to-use, practical color film. They worked full time as music teachers and gave concerts while experimenting during their off hours in Mannes' kitchen. Their success earned them full-time, well-paying jobs at Kodak and their efforts resulted in Kodachrome film, which was introduced in 1935.
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| Number | Title | Issue Date |
| 4859114 | Directional control system for a riding-type surface working machine An improved directional control mechanism for a riding-type surface working machine. The machine includes a pair of frame sections which are disposed in fore and aft relation. A rotor that carries surface working implements, such as trowel blades, is moun... | 08/22/1989 |
| 4856930 | Pavement and methods for producing and resurfacing pavement A pavement having one or more surface layers overlaying one or move base layers disposed on a subgrade with a rigid base layer interposed therebetween. The base layers are composed of paving material. The surface layers are composed of flexible paving mat... | 08/15/1989 |
| 4854767 | Assembly-type barricade An assembly-type barricade comprising a base stand and an upstanding wall both of which are nearly rectangular parallelpipedal. Protruding means is provided in one of the base stand and the upright wall, and receiving means is provided in the other. By po... | 08/08/1989 |
| 4854769 | System for paving inclined and/or curved surfaces An inclined roadbed is paved by vehicles which are connected by wires to uphill anchor vehicles. A paving vehicle on the inclined surface has a device for projecting a laser beam to a beam-receiving device on its respective anchor vehicle. The height of t... | 08/08/1989 |
| 4850737 | Hydraulic spring vehicle barricade and hydraulic circuit therefor A vehicle barricade comprises a frame to which a barrier plate is pivotally mounted for being moved between a passage and a blocking position. First and second hydraulic motors operably interconnect the plate and the frame. An hydraulic power supply is op... | 07/25/1989 |
| 4848961 | Concrete screed The present invention relates to a concrete screeding apparatus, and more particularly to an improved portable and lightweight vibrating concrete screed enabling a workman to use same without the need for rigid forms. The screeding apparatus comprises a g... | 07/18/1989 |
| 4838728 | Kit of hand-held tools for making a patterned impression in a cementitious material A kit of hand-held tools 1, 2, for forming a patterned impression 10 in a cementitious material comprises at least two tools, each having a blade 5 which is pressed into cementitious material using a handle 4. A first tool 1 of the kit for covering larger... | 06/13/1989 |
| 4836303 | Device for the remote adjustment of the relative orientation of two sections of a column The device comprises a variable-angle elbow coupling (14) interposed between the ends (12, 13) of two successive sections of a column. The coupling (14) comprises a first rectilinear tubular element (14a) and a second rectilinear tubular element (14b) con... | 06/06/1989 |
| 4835806 | Transfer bridge for a dock A transfer bridge for a ramp or a dock. The bridge includes a bridge plate, the back end of which is pivotably mounted via a shaft that is disposed in supports. A locking element prevents the shaft from accidentally lifting out of the supports. At the top... | 06/06/1989 |
| 4834576 | Expansion joint and form for concrete floors An expansion joint and form for concrete floors, consisting of a free-standing assembly comprising a vertical asphaltic board, a metallic panel flatly abutting against the asphaltic board, and a number of load transfer dowels or rods slidingly passing hor... | 05/30/1989 |
| 4832525 | Double-bearing shaft for a vibrating screed A portable vibrating screed includes a driven, vibratory rotatable shaft assembly mounted on an elongated frame equipped with means for screeding concrete. The shaft assembly includes a plurality of bearing assemblies spaced along the length of the shaft.... | 05/23/1989 |
| 4828427 | Cement screed tool A cement screed tool includes bracket clamps designed to be attached at each end of a long two-man screed, with pivotable handles being attached to each of the clamps. Operators can grip each combined handle and bracket assembly with both hands while stan... | 05/09/1989 |
| 4828426 | Device for imprinting surface of fresh concrete A device for manually, repetitively imprinting a surface pattern in fresh concrete, comprising: a plurality of blades secured together to form an imprinting unit, lower edges thereof to form the desired pattern when pressed into the levelled surface of fr... | 05/09/1989 |
| 4827549 | Hydraulic dock leveler A hydraulic dock leveler having a pivotable main deck, a lip member pivotably connected to the main deck, and a hydraulic system for pivoting the main deck relative to an adjacent loading dock platform and for power extending and power retracting the lip ... | 05/09/1989 |
| 4828424 | Vehicle security barrier A vehicle security barrier (10) for selectively prohibiting a vehicle from accessing a preselected area and for otherwise controlling vehicular traffic. The security barrier (10) comprises a base (12) defining a travelway (14) over which a vehicle can be ... | 05/09/1989 |
| 4828425 | Pre-loaded hinges for lane barrier system A lane barrier system comprises a plurality of pivotally interconnected modules adapted to be transferred on a roadway. Each adjacent pair of modules are pivotally connected together by a hinge connection to permit the modules to elongate or contract to a... | 05/09/1989 |
| 4825493 | Dock-leveler lock A manual lock for a vertically storing lock leveler. The leveler has a locking bar on the side thereof which rides on a cam surface of the lock. The lock has a spring biased latch member with the cam surface and a locking recess. When the leveler is in th... | 05/02/1989 |
| 4826349 | Underground vehicle barricade A vehicle barricade comprises a frame having an open top and bottom, side, front and rear portions. A barrier plate is pivotally associated with the frame for being pivoted between a first and a second position. A cylinder and piston assembly pivots the b... | 05/02/1989 |
| 4826352 | Machine for cutting off or planing off road surfaces In a machine for cutting off or planing off road surfaces, having a steerable chassis with an independent drive motor, and a planing or cutting tool which is located within the contour base line of the chassis and is fixed in vertically adjustable manner ... | 05/02/1989 |
| 4822207 | Anti-terrorist vehicle crash impact energy absorbing barrier An anti-terrorist vehicle crash barrier includes side support structures, crushable energy absorbing aluminum honeycomb modules, and an elongated impact-resistant beam extending between, and at its opposite ends through vertical guideways defined by, the ... | 04/18/1989 |
| 4821800 | Filtering media for controlling the flow of sand during oil well operations Sand is filtered from an oil flow from a sand-containing oil producing formation or interval of an oil well by passing the oil flow with entrained sand through a filter assembly containing filtering media in the form of a body of juxtaposed composite part... | 04/18/1989 |
| 4822208 | Advanced dynamic impact extension module An advanced dynamic impact extension module, used to protect occupants of vehicles from the adverse effects of instantaneous deacceleration of a vehicle when the vehicle impacts an end of a concrete barrier wall is disclosed. According to the invention, a... | 04/18/1989 |
| 4819783 | Automated inspection system and method An automated inspection system for identifying objects by their geometrical shapes includes an orientation device wherein objects are conveyed one-by-one at constant velocity to abut at least one stationary member which urges the objects to an orientation... | 04/11/1989 |
| 4818138 | Highway marker A highway marker for attachment to a roadbed to signal the location of a lane extending longitudinally of the roadbed and to signal the proper direction of movement in a traffic lane while defining the boundaries of the traffic lane. The marker has a bott... | 04/04/1989 |
| 4818139 | Methods and apparatus for making an asphalt-aggregate pavement An apparatus and method for delivering asphalt-aggregate material from a plurality of supply trucks to a finishing machine. In a preferred form of the invention the hopper of the finishing machine is modified to have a capacity substantially equal to the ... | 04/04/1989 |
| 4818137 | Terrorist vehicle arresting system A terrorist vehicle arresting system includes a rigid immovable crash barrier positioned at one side of a driveway and a turnstile having a circular sector positioned at the other side of the driveway in such a manner that upon entrance of an unauthorized... | 04/04/1989 |
| 4818140 | Screed extender with berm-forming screed A screed assembly has two screed sections hingedly connected together at meeting beveled ends. The hing between the screed sections maintains a hinge axis at the soles thereof as one of the screed sections is swung upwardly to define a sloped face for a b... | 04/04/1989 |
| 4815889 | Lane barrier system with pivot control and method A lane barrier system comprises a plurality of pivotally interconnected modules adapted to be transferred on a roadway. Each adjacent pair of modules are pivotally connected together by hinge connections to permit the modules to pivot relative to each oth... | 03/28/1989 |
| 4813811 | Prefabricated pavement devices The invention is directed to a prefabricated composite pavement device comprising a shaped pavement mixture portion bonded to a support portion and a method and apparatus for making the same.... | 03/21/1989 |
| 4810128 | Levelling device for producing a smooth surface A levelling device for producing a smooth surface on a sett paving bed is constructed, with a view to easy handling and neat working, so that the rule can lift the excess material with a cutting action by a projecting cutting edge and a rising ramp surfac... | 03/07/1989 |
| 4807700 | Wireline downhole annulus valve An improved tubing hanger having an annulus passageway therethrough and with an improved annulus control valve therein including an annular hanger body having an annulus passageway extending therethrough with a chamber interrupting said passageway and a v... | 02/28/1989 |
| 4808027 | Compaction attachment for backhoe An improved simplified compacting apparatus for mounting on the tool-support boom of a backhoe or other tractor. The apparatus includes a lower member with a convex cylindrical compacting surface which extends through an arc of less than about 180 degrees... | 02/28/1989 |
| 4808026 | Construction apparatus with earth trimmer A construction apparatus with a trimmer connected by a three-point suspension wherein each of the three points is independently adjustable for adjusting the angle of the trimmer relative to the main frame in accordance with the desired slope or grade of t... | 02/28/1989 |
| 4806044 | Anti-crash lane barrier with self-centering hinges A lane barrier system comprises a plurality of pivotally interconnected modules adapted to be transferred on a roadway. Each module has sidewalls that taper upwardly and inwardly to intersect a T-shaped upper portion having undercut surfaces extending lat... | 02/21/1989 |
| 4806047 | Screed frame and stiffening apparatus The present invention includes a concrete screed frame having a first screed blade, a second screed blade and a camber top member arranged in a triangular cross section. A plurality of frame supports are transversely mounted between the first and second s... | 02/21/1989 |
| 4806043 | Method and device for drainage of borders of all stabilized civil engineering areas or of adjacent borders of a structure A vertical drainage element is constructed and laid in position while at the same time forming a narrow vertical channel in the ground by means of an excavating machine or trencher by performing the following successive operations: a strip of filtering ma... | 02/21/1989 |
| 4802787 | Electrical control system A control apparatus for a pavement breaker which includes a carriage, a lifting means for raising and lowering an impact arm which impact arm includes a tool for impacting a surface, mounted on one end and an oscillating member mounted on the other end. T... | 02/07/1989 |
| 4800968 | Well apparatus with tubular elevator tilt and indexing apparatus and methods of their use An elevator bail with elongated slots, an elevator tilting assembly and indexing apparatus, and a top drive drilling unit in combination with such devices that are connected to the upper end of a drill string and movable upwardly and downwardly with the d... | 01/31/1989 |
| 4797025 | Device for cutting a receptacle in pavement to receive a reflector A device for cutting slots of varying lengths and shapes in pavement to receive a reflector, the cutting blades for cutting the slot always being at right angles to the tangent to that portion of the surface of the pavement where the slot is being cut and... | 01/10/1989 |
| 4793732 | Pavement slot cutter A pavement slot cutter has a mobile support adapted to advance on the pavement in a predetermined direction. A drum is mounted on the support to rotate about a horizontal, transverse axis. A motor within a hub fast on the support rotates the drums. A tran... | 12/27/1988 |
