Street Traffic Patents (Class 116/63R)
  • Patent number: 5456203
    Abstract: An arrangement for mounting a stone golf course marker to a foundation and for mounting accessory equipment to a stone golf course marker is disclosed. A connector is embedded in a concrete foundation and comprises a pair of parallel spaced-apart rods interconnected by a cross member. The rods are maintained in predetermined spaced-apart relation by the connector, enabling corresponding holes to be drilled in the base of the stone golf course marker at the manufacturing facility. The mounting arrangement for mounting accessory equipment to a stone golf course marker includes the use of sleeves disposed within bores in the stone golf course marker, with mounting members of the accessory equipment engaging the sleeves, rather than engaging the stone golf course marker directly. This sleeve arrangement disperses stresses and helps minimize cracking, chipping and damage to the stone marker resulting from lateral stresses exerted on the accessory equipment.
    Type: Grant
    Filed: February 26, 1993
    Date of Patent: October 10, 1995
    Assignee: Fairway Stone, Ltd.
    Inventors: George T. Oglesby, Jr., Edwin R. Sherrill, Jr.
  • Patent number: 5450811
    Abstract: A signalling device for warning motorists of danger including, in combination: a planar sign having a first surface with indica thereon; a housing having a top wall with a slot formed therein and a flange secured to the sign; a motor positioned within the housing, the motor having a horizontal output shaft, a disk coupled to the output shaft, the disk adapted for rotational movement, and a hole formed within the periphery of the disk; a generally vertically extending flag pole having an upper extent and a lower extent, the lower extent being pivotally connected to the bottom wall of the housing, the flag pole adapted for cyclic pivotal movement, a horizontal hole formed adjacent to the lower extent of the flag pole, the flag pole being positioned such that it extends through the slot of the housing, the upper extent of the flag pole extending above the housing and the top portion of the sign; an s-shaped pin having a first end and a second end, the first end positioned within the hole formed adjacent to the l
    Type: Grant
    Filed: October 18, 1993
    Date of Patent: September 19, 1995
    Inventor: Jim R. Heiland
  • Patent number: 5429448
    Abstract: Provisional road sign barriers and permanent medians are formed based on the correlative, interconnectable arrangement of a number of equal modules, some male and others female, for connecting, which are made of adequate plastic, are hollow and equipped to enclose an electrical supply and corresponding internal lamps that will provide a correct view and real volume of the formed barrier. The modules include, in addition to a metallic reinforcement structure, some sheets that act as elements which absorb the impact of vehicles. The modules will be filled with bags of water, or with sand and/or concrete, as weights, to form a static barrier that carries out the function of signposting and beaconing for works on highways and similar places, and of protecting against the impact of vehicles.
    Type: Grant
    Filed: March 31, 1993
    Date of Patent: July 4, 1995
    Inventor: Angel G. Ballesteros
  • Patent number: 5412492
    Abstract: A liquid crystal lens assembly that can be used to replace existing color lenses in traffic signals without the need for any special modifications to the traffic signal. The lens assembly utilizes a dichroic liquid crystal mixture that absorbs light when no electric field is applied to the mixture. When an electric field is applied across the liquid crystal mixture by two electrodes, the molecules change their orientation within the mixture and absorb less light, and the signal appears "on". The illumination of the bulb behind the lens assembly is visible to the user. The electric field is energized at the same time that the bulb for the traffic signal is illuminated. A colored transflector positioned in the rearward portion of the lens assembly provides the color for the signal and also acts to reflect light from the front of the lens assembly. Wires for applying the electric field to the electrodes connect directly to the terminal block for the traffic signal.
    Type: Grant
    Filed: November 5, 1991
    Date of Patent: May 2, 1995
    Assignee: Magnascreen Corporation
    Inventors: Theodore Zammit, Niel Mazurek
  • Patent number: 5408232
    Abstract: A traffic signal device having a single, continuously-illuminating lamp and several plain reflectors constructed by optical thin film technique to receive the light beam projected from the lamp and respectively reflecting light components of pre-determined wavelengths to display differently-colored traffic signals. Also, is a lamp detection system which monitors and detects the operation of the lamp and generates a signal to actuate the lamp interchanging mechanism to automatically replace the lamp with a spare lamp once the lamp malfunctions.
    Type: Grant
    Filed: March 25, 1993
    Date of Patent: April 18, 1995
    Assignee: Industrial Technology Research Institute
    Inventors: Rung-Ywan Tsai, Chaur-Tsang Wei, Chii-Hua Lee, Fang-Chuan Ho
  • Patent number: 5406250
    Abstract: A stop sign and/or crossing arm deployment system is secured to a side and/or the front, respectively of a school bus for deploying a safety stop sign and/or crossing arm between a retracted normal state and a deployed safety state. A dual power circuit is provided for providing maximum power at the instance of deployment and at the instance of final retraction. Otherwise, a lower power is used to operate a bi-directional DC motor which receives power for the entire time period between deploying and retracting the system. The system provides the lower power level while simultaneously heating the circuitry including the motor for use in cold climates. A single ground switch is used for coupling the motor directly to ground both during the deployed state and retracted state to provide maximum power in momentary cycle times to the motor.
    Type: Grant
    Filed: January 28, 1993
    Date of Patent: April 11, 1995
    Inventors: James Reavell, Raymond Heath
  • Patent number: 5400019
    Abstract: A portable traffic control device for temporary use capable of both automatic and manual operation which portable control device can be raised or lowered by hand and having a horizontal boom which folds down to a vertical position and with an adjustable and collapsible tripod stand and an electrical control circuit.
    Type: Grant
    Filed: August 17, 1993
    Date of Patent: March 21, 1995
    Inventor: Alfonso J. Riscoe, Jr.
  • Patent number: 5398174
    Abstract: A verge post having a plurality of flat vertical side faces and side edges for marking road verges or the boundaries of traffic lanes. The post is constructed with material which will fluoresce when illuminated with ultraviolet light, and to transmit visible light from the side faces and edges in two or more directions when illuminated with ultraviolet light from one direction. Different parts of the post can be made so they will fluoresce with different colors when illuminated with ultraviolet light.
    Type: Grant
    Filed: April 7, 1993
    Date of Patent: March 14, 1995
    Assignee: Ultralux AB
    Inventor: Peder Fast
  • Patent number: 5397197
    Abstract: The present invention is directed to a bollard made of an elongate member having a lower proximal end biasedly attachable in an upright position to a path surface, an upper distal end, and a longitudinal axis. A collar is attached to the elongate member about its upper distal end. The collar is rotatable about the longitudinal axis of the elongate member. When such bollard is mounted on or adjacent a path surface, the bollard is deflectable from its upright position about its proximal end, e.g., when contacted by a vehicle. The collar rotates when in contact with the vehicle for following the contour of the vehicle without damaging the vehicle. Specific bollard configurations are disclosed herein along with numerous attachments with which the inventive bollard can be outfitted.
    Type: Grant
    Filed: June 4, 1993
    Date of Patent: March 14, 1995
    Inventor: Dale W. Beavers
  • Patent number: 5392728
    Abstract: Roadway markers (11) with large rectangularly shaped bases and a raised rumble portion containing at least one concave curved edge (21, 23) are disclosed. The concave curved edges (21, 23) face oncoming traffic. The concavity may have a constant radius of curvature or may decrease with increased elevation. The height-to-width ratio of the roadway marker and the average radius of curvature are such that automobile tires (41) impacting the roadway marker (11) do not impact the surface of the concavity. Rather, tires (41 ) impacting the roadway marker ( 11 ) hit the marker above the edge concavity. As a result, a gap exists between impacting tires and the surface of the concavity. Water squeezed from a wet tire impacting the roadway marker will enter the gap and wash the surface of the concavity. A reflective tape (31) is attached to the surface of the concavity. In some embodiments of the invention concavities are located in opposite edges of the raised rumble portion.
    Type: Grant
    Filed: July 15, 1993
    Date of Patent: February 28, 1995
    Assignee: Davidson Plastic Company
    Inventors: Peter A. Speer, Michael W. Sly, Harry J. Glutting
  • Patent number: 5379716
    Abstract: An articulated and automatic spring-back post foot (3) for a post (1) for road signs, signal lights and smaller street lights or the like. The post foot comprises a lower or exterior section (11) adapted for attachment in the ground or to a bridge element or the like, and an upper or internal section (4) having an attachment means for the post (1) and being connected for articulated, spring-back movement to said First section (11). The lower or exterior section (11) consists of a sleeve-like element of metal having at the upper edge thereof an inwardly facing annular flange (12). The upper or internal section (4) is provided at the lower end thereof with a central indented section (8) which is provided on the exterior jacket face thereof with an encircling body (9) of elastic rubber material having an outer diameter which is adaptable by press-fitting to the internal diameter of the flange (12).
    Type: Grant
    Filed: June 18, 1993
    Date of Patent: January 10, 1995
    Inventor: Egill Helland
  • Patent number: 5342140
    Abstract: A mounting assembly includes a bracket, flasher light unit, and barricade. The bracket has a slot for attachment to the barricade and a round aperture for attachment to the flasher light unit. When attached to the barricade, the bracket and flasher may be rotated out of position to facilitate maintenance and rotated back into proper position for use. To prevent the accidental misaligning of the flasher during use, small protrusions on the barricade hold the bracket and flasher firmly in a proper vertical position.
    Type: Grant
    Filed: June 30, 1993
    Date of Patent: August 30, 1994
    Assignee: Plasticade Products Corporation
    Inventor: Geoffrey M. Glass
  • Patent number: 5309862
    Abstract: A flag holder for attachment to a standard highway sign, for holding a pair of symmetrically arrayed warning flags at the top of the sign, and for permitting the flags to be folded downwardly for transport and storage. When used on roll-up highway signs the flags may be rolled up along with the roll-up sign. The holder includes an elongated rigid holder body which is adapted for attachment adjacent the top of a standard rigid or roll-up highway warning sign. Attachment is by means of bolts in the case of a rigid sign, or at least one clamp attached to the body for fixedly securing the body to the strut or brace of a roll-up sign. A pair of elongated flag staffs are pivotally attached at one end to the holder body and each has a flexible warning flag at the other end.
    Type: Grant
    Filed: August 17, 1993
    Date of Patent: May 10, 1994
    Inventor: Paul A. Lang
  • Patent number: 5277146
    Abstract: A flexible sign post for use along roadsides which allows a sign to be deflected when hit by a passing object. The sign post consists of a number of mounting brackets which are spaced apart and secured to a substantially rigid vertical sign post. Each mounting bracket has a mandrel over which an elastomeric sleeve is fitted.A number of substantially rigid braces are connected to the mounting brackets by the elastomeric sleeves. The sign can then be attached to the ends of the braces in a vertical position.
    Type: Grant
    Filed: December 4, 1992
    Date of Patent: January 11, 1994
    Assignee: Flexstake, Inc.
    Inventor: Robert K. Hughes, Jr.
  • Patent number: 5267523
    Abstract: A signalling panel comprises two superposed transparent plies of plastic material peripherally secured together. The plates have a cylindro-convex configuration and the two plies are slightly spaced from each other to provide a slot therebetween for receiving a flexible sheet displaying a visible information through the two plies. The panel when narrow is secured to a rigid base while when wide is contemplated to be secured to a flexible base member.
    Type: Grant
    Filed: October 2, 1992
    Date of Patent: December 7, 1993
    Inventor: Denis P. Hugron
  • Patent number: 5245334
    Abstract: An installation of traffic detection cables adapted for sub-surface mounting or adapted for top surface mounting which comprises a moulding of prismatic type, that is having the substantially same cross sectional shape extending longitudinally in which two detection cables are embedded, in which the cables are separated to reduce to acceptable levels or levels which can be handled by suitable electronic circuitry or logic signal processing cross cable interference effects when an impulse is applied to the profile by passage of the vehicle wheels. A void or plate can separate the cables in a matrix of about 85 Shore hardness.
    Type: Grant
    Filed: June 19, 1990
    Date of Patent: September 14, 1993
    Inventors: Franz J. Gebert, Rudiger H. Gebert, Ralf D. Gebert
  • Patent number: 5239452
    Abstract: A color changing lamp comprising a lamp, a housing, and a projection shifting device, said lamp fixed on the outside of the housing to reflect the colored light beam coming from the projection shifting device which has a light beam generator, a concave lens to receive the parallel light beam from said generator, a guide plate to limit the focused light beam from the concave lens to pass through its fan-shaped opening to a color disc divided into a plurality of different colored sections, a color disc rotating device to rotate said color disc to position only one of the colored sections to be in line with the guide plate to color the light beam with the color to reach the lamp, which can reflect the colored light beam, and a lighting time indicating device to show the length of lighting time of each color for the lamp.
    Type: Grant
    Filed: October 8, 1991
    Date of Patent: August 24, 1993
    Inventor: Liang-Ming Chen
  • Patent number: 5223977
    Abstract: The marker has a pair of upwardly converging reflectant planar panels facing approximately in opposite directions. In its correct attitude on a support surface the panels slope at 2.degree.-6.degree. to the vertical if the marker is intended for assisting the landing of fixed wing aircraft and at 8.degree.-10.degree. to the vertical if the marker is intended for assisting the landing of helicopters. The reflectant panels are preferably retroreflectant.
    Type: Grant
    Filed: October 15, 1991
    Date of Patent: June 29, 1993
    Inventor: Reginald S. Bennett
  • Patent number: 5207175
    Abstract: A marker post and the like comprises a base to be placed on or in the ground. A threaded hole or other fastening mechanism is located at the top of the base. A post is attached to the base by a spring. At the other end of the spring is a screw or other fastening mechanism which will operate with the fastening mechanism at the top of the base. When impacted by an external force, the marker post flexes.
    Type: Grant
    Filed: March 17, 1992
    Date of Patent: May 4, 1993
    Inventor: Garbis Andonian
  • Patent number: 5205236
    Abstract: An impact resistant marker for highway marking has facilities that cause it to deflect if struck by a vehicle. The marker has a base and a post. The post connects to the base by means of a flexible element. The post has a longitudinal hole through it. A stiffener core locates in this hole and extends part of the distance of the hole. The lower end of the stiffener core is spaced above the upper end of the mandrel by a clearance. If struck, the stiffener core causes the post to deflect at the elastomeric element.
    Type: Grant
    Filed: July 26, 1991
    Date of Patent: April 27, 1993
    Assignee: Flexstake, Inc.
    Inventor: Robert K. Hughes
  • Patent number: 5197819
    Abstract: An improved apparatus for attaching a flexible marker shaft to a roadway. The flexible lower part of the marker shaft slides over a mandrel, and into a maker shaft cavity. Locking wedges are positioned in the cavity to surround and support the flexible marker support shaft in the cavity. A locking pin passes through a locking pin hole and locks the wedges and the marker shaft into the marker shaft cavity.
    Type: Grant
    Filed: August 31, 1991
    Date of Patent: March 30, 1993
    Assignee: Flexstake, Inc.
    Inventor: Robert K. Hughes
  • Patent number: 5090348
    Abstract: The invention is a traffic signalling post which comprises a flexible rod member, a rigid shaft coaxially secured at one end to the rod member, an anchor bore member adapted to house the shaft for maintaining the latter in a vertical position. The bore member has a perforated elastic diaphragm for peripherally sealing the shaft at a location adjacent the rod member when the latter sits in the bore member. The diaphragm is particularly characterized by a pair of rectilinear lips extending upwardly and adapted to be depressed downwardly with the introduction of the shaft in the anchor bore member and to be raised upwardly by the retraction of the shaft from the anchor bore member.
    Type: Grant
    Filed: March 26, 1991
    Date of Patent: February 25, 1992
    Inventor: Denis P. Hugron
  • Patent number: 5067849
    Abstract: A road-marking nail includes a body having a substantially hemispherical shape and a vertical axis. The body is formed to have holes, notches, or projections to facilitate magazine feeding, and grooves, holes, or undercuts to facilitate mechanical grasping. Cat's-eye reflectors can be disposed in recesses formed in the body.
    Type: Grant
    Filed: December 8, 1989
    Date of Patent: November 26, 1991
    Assignees: Hermann Silbernagel, Beiersdorf AG
    Inventors: Hermann Silbernagel, Ulfried Wiegand
  • Patent number: 5044300
    Abstract: A wrapper for parking area gates or construction barriers is disclosed. The unique wrapper consists of an elongate piece of flexible generally paper-like material of sufficient length and width to wrap around a barrier arm. Indicia of diagonally spaced blocks of contrasting colours are affixed to the wrapper in a parallel manner. When a barrier member is replaced, the covering is wrapped about the barrier member and secured to itself thereby producing instantly a new barrier for re-operation of the parking area or protection of the construction site. The invention eliminates the cost of expensive cuts of wood and meticulous painting each time the barrier is broken.
    Type: Grant
    Filed: April 18, 1990
    Date of Patent: September 3, 1991
    Inventor: Douglas M. Herd
  • Patent number: 5036307
    Abstract: Apparatus for activating a stop sign on a bus from a retracted to an extended position and vice versa. The apparatus includes a motor coupled, via a rotary-to-reciprocating motion translator, to the stop sign. A rotor is connected to the motor and forms a part of the motion translator. The rotor includes an electrically conductive element at a discrete location on its periphery for sequentially engaging respective ones of a pair of elements located at fixed positions on diametric sides of the rotor. The fixed elements are connected via relays to the motor and an electrical power source to control the operation of the motor so that when the bus door is open the stop sign is extended and when the door is closed the sign is retracted.
    Type: Grant
    Filed: June 4, 1990
    Date of Patent: July 30, 1991
    Assignee: School Bus Parts Co. of Canada, Inc.
    Inventors: James Reavell, Raymond Heath
  • Patent number: 4992788
    Abstract: A portable traffic control system for control of traffic at temporary locations includes a trailer having a base supported by an axle and wheels, two signal supports connected to the base and an actuating mechanism for selectively urging the signal supports from a transporting position to an operating position and back. A transverse arm connected to one signal support is extendable laterally and outwardly from the trailer. A signal head is attached to the transverse arm and a second signal head is attached to the upper end of the second signal support.
    Type: Grant
    Filed: October 2, 1989
    Date of Patent: February 12, 1991
    Assignee: International Traffic Systems, Inc.
    Inventor: Rudolf P. Arndt
  • Patent number: 4973190
    Abstract: Traffic control devices are employed for providing temporary delineation and demarcation of traffic lanes in order to guide the flow of traffic through detours, construction areas, and the like. Normally, ballasts used with traffic control elements have been bags containing a stabilizing material such as sand. Such traffic control elements are subject to improvement. They do not permit the stabilizing material to be spread uniformly across the bottom of the traffic control element. Sandbags become lodged against one side of the traffic control element during assembly, or they are thrown against one side on impact. And none of the stabilizing materials in use lend themselves to disassembly and transportation when the traffic control elements are moved to a new hazardous site. Such shortcomings are overcome by the improvement herein.
    Type: Grant
    Filed: March 2, 1990
    Date of Patent: November 27, 1990
    Assignee: Flex-O-Lite, Inc.
    Inventors: Carl L. Erwin, Dusan Krulj, Herbert J. Kramer
  • Patent number: 4879965
    Abstract: Airport twenty-four hour pilot information markers are provided to tell the pilot: upon takeoff or landing how many feet of runway remain; before takeoff or after landing what taxiway he or she is to follow; what is the direction, inboard, outboard, north, south, east, or west, etc.; what is the intersection; what is the holding position; and/or what is the destination; etc.
    Type: Grant
    Filed: May 31, 1984
    Date of Patent: November 14, 1989
    Inventor: Irvin L. Valley
  • Patent number: 4852511
    Abstract: A traffic barrier is disclosed copmrising: two high visibility panels supported by a pair of legs joined by a cross-member, and a flexible substantially closed container which is supported by the legs or cross-members and adapted to be filled with a liquid for adding to the weight and stability of the structure. The liquid container allows the barrier to be easily moved, transported, and placed in use.
    Type: Grant
    Filed: February 29, 1988
    Date of Patent: August 1, 1989
    Inventors: Art Look, Joseph Valenti
  • Patent number: 4847618
    Abstract: A traffic control system for controlling vehicular traffic flow at intersections in which the conventional red, yellow, green three light traffic signal that informs a motorist to stop, prepare to stop, and go is supplemented by an auxiliary signal spaced from the intersection. The auxiliary signal informs a motorist that he will have sufficient time to make a gradual normal stop at the intersection before the red stop light is switched on, provided he has not passed the auxiliary signal when the yellow light of the traffic signal is illuminated. If he has passed the auxiliary signal when the yellow light of the traffic signal is switched on, he will know that he can proceed through the intersection before the red stop light is switched on. The auxiliary signal may be a single or double yellow light operating in synchronism with the yellow light of the traffic signal, or it may be another type of signal, such as a painted zone on the roadway surface.
    Type: Grant
    Filed: December 22, 1986
    Date of Patent: July 11, 1989
    Inventor: Estelle Baustin
  • Patent number: 4818138
    Abstract: 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 bottom surface for attachment to a roadbed, a base and adjacent sides are perpendicularly arranged to the base and describe the boundaries of a triangle. A triangular floor in the form of a triangle has a base coincident with the perpendicular base and sides spaced inwardly from the perpendicular sides with there being a peeked boundary formed between the perpendicular adjacent sides and the adjacent sides of the floor. A reflective surface on the perpendicular adjacent sides form an arrow indicating a direction of travel while another reflective surface on the floor indicates an opposite direction of travel respective to the first arrow and can be of various colors.
    Type: Grant
    Filed: December 22, 1987
    Date of Patent: April 4, 1989
    Inventor: Donald M. Brown
  • Patent number: 4792258
    Abstract: A collapsible warning barricade apparatus for restricting access to a designated area by vehicular and pedestrian traffic in which at least an upstanding portion of the apparatus is capable of collapsing towards a substantially ground surface-hugging position upon impact from traffic, as well as capable of collapsing into a substantially flat position for transportaion and/or storage. The barricade is restrained in its substantially upright position by two support runners which are pivotally attached to the barricade member. At each pivot point, automatic locking and biasing apparatus allow the barricade member to rotate from a locked upright position upon impact to a locked ground surface-hugging position. The support runners of the barricade may additionally be provided with spurs along the top edge to affix a sandbag, when required for ballast. A variety of signalling indicia are further integrated into the barricade member for warning emphasis.
    Type: Grant
    Filed: August 3, 1987
    Date of Patent: December 20, 1988
    Assignee: Warning Lites of Illinois, Inc.
    Inventor: LeRoy L. Goff
  • Patent number: 4790684
    Abstract: A warning system for multi-lane roadways comprising a group of strips placed longitudinally across only the left-most lane of the roadway as referenced by a person facing in the designated direction of traffic flow.
    Type: Grant
    Filed: July 16, 1987
    Date of Patent: December 13, 1988
    Assignee: Simulators Limited, Inc.
    Inventor: Wilbur R. Adams
  • Patent number: 4779955
    Abstract: A reflective device for providing 360 degrees of reflective surface to an attached support post having only forward and rearward faces suitable for viewing. The device comprises an elongate, hollow tubular body having a top rim, intermediate side wall and bottom rim. A closed top cover is coupled to the top rim and includes a recess which projects above the cover and is configured to provide a conformed fit around the upper end of the support post which is received therein. A slotted opening is positioned in the bottom cover which is coupled to the bottom rim and provides a port for inserting the post for seating within the 360 degree reflective structure.
    Type: Grant
    Filed: November 9, 1987
    Date of Patent: October 25, 1988
    Assignee: Ametek
    Inventor: Donald W. Schmanski
  • Patent number: 4764051
    Abstract: An apparatus and method for cutting grooves on the edges of an already formed road. Each of a plurality of toothed cutting wheels revolves about a substantially vertical driving shaft. Simultaneously, each cutting wheel (attached to a respective rotary shaft) revolves about its own longitudinal and substantially horizontal axis. The apparatus is moved along a road, near an edge thereof, thus giving rise to one linear motion and two rotary motions. Sequentially, each cutting wheel enters an edge of the road from a region beyond the road edge, due to a slight tilt of the plane which contains the cutting wheel rotary shafts. The resultant grooves are deepest at the road edges and then gradually diminish to zero depth, the grooves being arcuate and parallel to each other. With the plane containing the cutting wheel shafts completely horizontal, the apparatus can cut rain drainage grooves in a raised marking strip on the road or can remove bumps from the road.
    Type: Grant
    Filed: July 20, 1987
    Date of Patent: August 16, 1988
    Inventor: James R. Whitney
  • Patent number: 4751893
    Abstract: An anti-glare screen adapted to be mounted to concrete median barriers so as to block light from the headlights of oncoming vehicles on the opposite side of the glare screen. The anti-glare screen comprises a plurality of corrugated sections overlapped to form a continuous barrier yet flexible enough to conform to bends in a roadway.
    Type: Grant
    Filed: March 20, 1987
    Date of Patent: June 21, 1988
    Inventor: William S. Brantley
  • Patent number: 4737049
    Abstract: A roadway reflector device to be embedded in a roadway but with the reflector element thereof projecting partly above the roadway surface, to be seen by oncoming motorists and used as a guide. The reflector element is elongated and of circular shape, in cross-section. When the reflector element, located in a roadway so that its lengthwise direction lies in a direction transverse to the direction of travel, is impacted by a horizontally directed force, that force causes the reflector element to rotate, and when impacted by a vertically downward force is pushed downwardly into the housing for the device against a compressible means, which on removal of the downwardly directed force returns to its original vertical location. Thus, the potentially damaging effects of these impacting forces is nullified, leaving the reflective device undamaged.
    Type: Grant
    Filed: December 29, 1986
    Date of Patent: April 12, 1988
    Inventor: Edward J. Callhan
  • Patent number: 4734725
    Abstract: Apparatus for photographing objects and/or persons simultaneously with the occurrence of a predetermined event wherein the apparatus is particularly adapted for photographing persons when they shoot traffic signs along highways. The impact of a bullet against the traffic sign energizes an encoded transmitter with transmits a radiofrequency into the air for a first predetermined time period. A receiver/decoder is located remotely from the transmitter for receiving the radiofrequency signal from the transmitter, and a camera is positioned to photograph persons and/or vehicles within a predetermined area adjacent to the traffic sign during the period of time that a signal is received by the receiver/decoder.
    Type: Grant
    Filed: December 11, 1986
    Date of Patent: March 29, 1988
    Inventor: John C. A. Bierman
  • Patent number: 4726706
    Abstract: A retro-reflective roadway marker is generally comprised of a one-piece housing, having integrally molded retro-reflective faces.The reflective faces having outside surfaces with abrasing reducing raised members and inside surfaces of light reflecting elements that are preferably formed from three mutually intersecting surfaces.In one form the reflective elements within the housing are integrally molded with partition walls, dividing the reflective elements into small cells, each cell with a plurality of the reflective elements functioning independently without being encapsulated by the filler material.
    Type: Grant
    Filed: June 2, 1986
    Date of Patent: February 23, 1988
    Inventor: Adil H. Attar
  • Patent number: 4717281
    Abstract: A road marker having a stiff but resilient body including a cavity formed therein to receive a suitable adhesive material for securing the marker to the road surface, and adaptable for the inclusion of one or more apertures in said body to receive one or more hermetically sealed lens and retro-reflector elements prior to adhesion of the road marker to the roadway. The body of the road marker is formed with a continuous edge portion and a frusto-conical central portion configured so as to limit contact between vehicle tires and the outer lens surface which may be disposed therein, thereby limiting abrasion and extending the useful life of the road marker. The body of the road marker also includes an aperture to receive a nail in order to facilitate installation of the road marker on the road surface.
    Type: Grant
    Filed: October 10, 1986
    Date of Patent: January 5, 1988
    Inventors: Kathleen P. Shepherd, Tobin Djerf
  • Patent number: 4715743
    Abstract: A tile for positioning on walkways, crosswalks and other areas of pedestrian traffic for providing direction and warning to visually handicapped persons. The tile comprises a flat plate having a chamfered edge and including raised bumps coupled to a top surface of the plate and projecting upward therefrom to a maximum height of less than 8 millimeters. A flowable adhesive used at the chamfered edge provides for a tapered seal around the tile or for formation of an expansion joint between two contiguous tiles. The bumps are configured as truncated structure having a larger base and tapered to a top surface which bears the foot traffic. A bottom surface of the tile includes a uniform adhesive layer which enables attachment of the tile to a street surface. A system of tiles for assisting visually handicapped persons across the street is also disclosed and includes a combination of dot and bar tiles oriented to give direction to the pedestrian.
    Type: Grant
    Filed: June 13, 1986
    Date of Patent: December 29, 1987
    Inventor: Donald W. Schmanski
  • Patent number: 4701069
    Abstract: An apparatus and method for cutting rain drainage grooves in a road surface, such as at the edges of the road to form a road marker system. A cutting cylinder rotates about its longitudinal axis, the latter lying in a substantially horizontal plane and at some angle, generally a right angle, to the road direction. The cutting cylinder is mounted on a frame, the latter attached to and carried by an automotive vehicle such as a truck. As the truck travels along the road, the cutting cylinder is moved alternately up and down, into the road surface, and forms the grooves. The cutting cylinder can be slightly tilted, so as to produce grooves of variable width and depth. The truck moves along the road being grooved at a substantially uniform speed. Preferably, the slopping side walls of the grooves are coated with a retro reflective coating. The grooves continuously drain rain so that the retro reflective coating is visible during hours of darkness and rain, to maintain visibility of the road edge to drivers.
    Type: Grant
    Filed: December 10, 1986
    Date of Patent: October 20, 1987
    Inventor: James R. Whitney
  • Patent number: 4697950
    Abstract: An illuminated stepping pad is disclosed herein intended to be buried in the ground having a circular base including an upright continuous sidewall terminating in a circular knurled lip. A light is operably carried on said base between a plurality of columns constituting load-bearing standoffs. A lid displaying messages, ornamental graphics or the like is removably carried on the base about the lip and may include an irregular exterior surface of non-skid composition. The lid is composed of translucent material allowing diffusion of the light. Anchor devices may be employed to engage with the ground to prevent undesired movement or rotation of the base.
    Type: Grant
    Filed: June 5, 1986
    Date of Patent: October 6, 1987
    Inventor: Wayne E. Copeland
  • Patent number: 4674432
    Abstract: A collapsible barricade comprising a rigid cross-member coupled by an elastic joint to at least one pair of rigid legs. The elastic joint is developed by a flexible, elastic, resilient connecting member which is attached at one end to the cross-member and at the other end to the rigid leg in a manner such that the formed elastic joint is capable of stretching under stress to allow the pair of legs and attached cross-member to deform from a sturdy configuration when subjected to an impact by a vehicle or other moving object. The collapsible barricade can then be restored to its sturdy condition by merely repositioning or reattaching the connecting members to the respective legs and cross-member and by repositioning the deformed structure to its original configuration.
    Type: Grant
    Filed: June 22, 1984
    Date of Patent: June 23, 1987
    Assignee: Carsonite International Corporation
    Inventor: Donald W. Schmanski
  • Patent number: 4653955
    Abstract: There is disclosed a highway lane divider and road marker, having a relatively low profile, characterized by the inventive feature of a unidirectionally curved retroreflective element, as opposed to planar retroreflective elements used heretofore.
    Type: Grant
    Filed: May 7, 1986
    Date of Patent: March 31, 1987
    Assignee: Ferro Corporation
    Inventor: Robert R. Racs
  • Patent number: 4652851
    Abstract: An improved traffic signal lamp control system utilizes continuously burning lamps, such as fluorescent lamps or HID lamps, located inside a traffic signal housing or external to the housing to direct light toward the lens apertures of the housing. A light attentuation device, which may be either a mechanical shutter or a liquid crystal panel is placed in the path of light between the continuously energized lamp and the aperture of the housing to either block the passage of light from the lamp through the aperture or permit the passage of light therethrough. The conventional red, amber and green lenses are placed in the apertures, and the conventional traffic signal light control signals are used to operate the attentuation device. Substantial savings in power consumption are encountered since fluorescent lamps and HID lamps consume much less power than incandescent lamps, and considerably increased lamp life can be achieved.
    Type: Grant
    Filed: November 7, 1983
    Date of Patent: March 24, 1987
    Inventor: Ian Lewin
  • Patent number: 4642605
    Abstract: A warning device is responsive to the failure of an electric power supply for activation to a warning mode. The warning device includes an arm pivotally mounted to a frame member and latched by an electromagnet in a non-warning mode. In the non-warning mode, a collapsible warning sign carrier is enclosed within an enclosure formed by the frame and the arm. When the supply of power is interrupted, the electromagnet releases the arm so that the arm pivots to a warning position.
    Type: Grant
    Filed: March 3, 1986
    Date of Patent: February 10, 1987
    Inventor: S. Joel Karp
  • Patent number: 4636108
    Abstract: A delineator comprises an upstanding flexible marker having a first access opening formed through a bottom wall thereof to receive a fastener, such as a bolt, therethrough. A second access opening is formed through a side wall of the marker to accommodate a wrench for the purpose of selectively tightening or releasing the bolt. In one embodiment of the invention, a mounting plate, having the bolt secured thereon, is secured to a paved roadway or the like with the bolt extending upwardly through the first access opening and having a nut threaded thereon for the purpose of securing the marker in place. In a second described embodiment, a mounting post is driven into the ground and has screw threads defined therein with the bolt extending downwardly through the first access opening and threadedly engaged with the screw threads.
    Type: Grant
    Filed: June 5, 1984
    Date of Patent: January 13, 1987
    Inventor: John W. Duckett
  • Patent number: 4618281
    Abstract: A raised pavement marker brace for extension about a raised pavement marker having an upper and side surfaces, comprises a base portion configurated to extend about the marker and to engage the surface of the pavement for securement by adhesive, the wall portion extending upwardly from the base portion to protect at least one side of the marker, and a retaining lip portion extending upwardly from the wall portion and extending over a portion of said upper marker surface. A top portion of the brace may extend over at least a portion of the upper surface of the marker to protect the surface. The brace may extend over a portion of the marker side surface and define an opening about a reflective portion of the marker side surface.
    Type: Grant
    Filed: December 31, 1984
    Date of Patent: October 21, 1986
    Inventor: Van R. Ajemian
  • Patent number: 4613847
    Abstract: A self-contained emergency signal has a base which contains a battery and a high-intensity flash/lamp actuating unit. The actuating unit is electrically connected to a battery and to a high-intensity flash lamp. A switch turns the actuating unit on and high-intensity lamp bursts are displayed through a transparent, translucent, polarized, colored or symbol containing a lens arrangement, or a combination of such elements. The emergency signal may have different forms such as cylindrical, elliptical, rectangular or triangular. In some embodiments the lens arrangements are in telescopic relationship to the base, or may be collapsible to a compact, easy-to-carry device. Exemplary circuitry for use with the various emergency signal embodiments is also part of the invention.
    Type: Grant
    Filed: July 23, 1984
    Date of Patent: September 23, 1986
    Assignee: Life Light Systems
    Inventors: John E. Scolari, Robert T. Warner, Joe E. Deavenport