Abstract: Projectile apparatus is provided employing light and sound that may be dispersed over a large area with high intensity to produce a non-lethal, visible and audible countermeasure to temporarily blind and/or disorient one or multiple potential adversaries. The apparatus is suitable for use in tactical scenarios by military, police, and special operations personnel. The apparatus is also suitable for use in training operations for military, police, and special operations personnel. For amusement or recreation, the apparatus may be used in simulated warfare or in games such as paintball.

Abstract: An exemplary flash lamp module includes a light source, a holding pole, a lampshade, a slide orbit and a driving portion. The light source is mounted on the holding pole. The lampshade is configured for covering the light source. The lampshade has an opening configured for allowing light beams emitted from the light source passing through the opening. The slide orbit is configured for supporting and allowing the lampshade moving therealong. The driving portion is configured for driving the lampshade to move along the slide orbit so as to change the direction of emitting of light beams through the opening.

Abstract: The present invention provides a drive system for an optical light modulation system employing multiple light modulation element pairs. The each pair is driven by a single motor which drives one axis around which one element of the first pair rotates while the other element of the first pair free floats and rotates about a second axis. While the second axis drives the rotation of the first element of the second pair and the first axis provides a rotation pivot for the second element of the second pair. Thus the two pairs share the two axises providing a more compact drive system that can be used more flexibly in an optical train of an automated multiparameter lighting system.

Abstract: A light source module for generating polarized light includes a light emitting element, a reflector, and an optical element. The light emitting element generates a light ray, and the reflector reflects the light ray towards the optical element. The optical element includes a light splitting face and a reflection face. The light splitting face receives the light ray, and an angle between the light splitting face and the incident light ray is at about a Brewster's Angle. After the light ray is irradiated to the light splitting face, the light ray is divided into a refraction light and a reflection light. The reflection face reflects the refraction light, and the reflection face is substantially perpendicular to a path of the refraction light. Therefore, a light source with a high degree of polarization is realized by a design of the light splitting face and the reflection face.

Abstract: A wall notification device described herein can draw a lower current by providing a more efficient reflector configuration. The reflector is designed to be positioned on a wall and provide sufficient light output in each of the requisite directions, as required by the UL 1971 standard. The notification device has a reflector unit having a base having a curved portion centered on the vertical axis and a flat portion extending from the curved portion; a reflective flange extending from a location near a top side of the base; a first and second specular protrusion extending from the curved portion of the base; a third and fourth specular protrusion extending from the base; a fifth and sixth specular protrusion extending from the curved portion of the base; and a sixth and seventh specular protrusion extending form the flat portion of the base.

Abstract: A component of an actuatable apparatus has a substrate, a selectively light- transmissive opaque covering, and an illumination source. The opaque covering is applied to an obverse surface or a reverse surface of the substrate to selectively enable and prevent transmission of light therethrough. The illumination source is adjacent the reverse surface for illuminating a selected area of the substrate. The opaque covering is characterized by first and second portions collectively defining a pattern associated with the selected area. The first portion enables transmission of light therethrough, and the second portion prevents or impedes transmission of light therethrough. Actuation of the illumination source directs light through the first portion but not through the second portion to reveal the pattern. The opaque covering renders the pattern invisible when the illumination source is in the non- illuminated state, and visible when the illumination source is in the illuminated state.

Abstract: A universal light ball system has a light source with a substantially round housing disposed within a substantially elongated housing so that the light source may be directed by changing the orientation of the substantially round housing relative to the substantially elongated housing. The substantially elongated housing may be inserted into another member such as a the hollow top of landscape edging in order to provide unobtrusive and aesthetically pleasing landscape lighting.

Abstract: A light emitting diode (LED) lighting device is provided. The LED lighting device includes an LED light bar and a passive heat sink. The passive heat sink includes a base and a plurality of heat sink fins. The LED light bar is placed on one side of the base, and the heat sink fins are placed on the other side of the base. The fins are fixed on the base by soldering.

Abstract: A light-emitting diode (LED) light bulb and an application thereof are described. The light-emitting diode light bulb comprises: a light-emitting diode light source module; a base, wherein the light-emitting diode light source module is disposed on the base; and a driver portion to drive the light-emitting diode light source module, comprising a rotation shaft, wherein the driver portion is connected to the base via the rotation shaft, such that the light-emitting diode light source module can rotate relative to the driver portion.

Abstract: A light source module includes a circuit board on which a circuit pattern is formed; a semiconductor light emitting element; an electrode pad; and a connecting body. The semiconductor light emitting element includes a first surface formed into an oblong shape, and a second surface positioned facing opposite the first surface. The second surface is connected with a second part of the circuit pattern. The electrode pad is provided on the first surface of the semiconductor light emitting element and includes a connecting portion. The connecting body is connected with the connecting portion of the electrode pad and a first part of the circuit pattern. The electrode pad is provided on a portion of the semiconductor light emitting element that includes one end portion of the first surface. The connecting portion of the electrode pad is provided at a position in one of a continuous and spaced manner in the lengthwise direction of the electrode pad.

Abstract: A headlamp includes a lamp base with an interior reflecting surface, a lamp provided in the lamp base, a driver deposited on a recessed supporting surface of the lamp base, two light shields installed on the lamp base and a spring biasing the lamp shields towards one another. The driver includes a driving shaft, and a pushing block with a conical surface gradually tapered toward its free end. The light shields are pivotally fixed on the lamp base by fastening elements and their inner portions overlapped each other, and each has a sliding groove bored obliquely and tapered downwards for the pushing block to pass through. The light shields are drawn by the driver to control light projecting from the lamp to produce a high and low beam illumination pattern.

Abstract: A vehicular lamp has an opening portion extending in a left-right direction provided on a side that wraps around toward a rear of a vehicle on an end side of an outer side wall of a mirror housing that supports a side mirror body has a main lamp body. The vehicular lamp has a lamp body and a front lens. The main lamp body is formed into a shape that generally follows the curved opening portion. The front lens is attached to the mirror housing so as to slightly project from or be on generally the same plane as the opening portion. The vehicular lamp has a surface-emitting light guide inner lens provided along the front lens in a curved lamp chamber space. The lamp chamber space is defined by the lamp body and the front lens. The lamp chamber space is elongated in the left-right direction.

Abstract: A variable condenser for delivery of illumination, including a recursively nested circle-to-line fiber optic shape-converting cable and a focusable input lens system. At the input of the fiber optic cable, sets of individual optical fibers comprise successively smaller annuli recursively nested about a common center. At the output of the fiber optic cable, the sets of individual optical fibers comprise pairs of line segments recursively nested about the line midpoint, whereby the nesting level of the pairs of line segments has an exact or an approximate correspondence to the nesting level of the annuli. The output may be split into a plurality of lines, whereby the sets of individual optical fibers are distributed among the plurality of lines. The input lens system has a single adjustable focus means to vary the radius of an illumination spot incident upon the input of the fiber optic cable circle input.

Abstract: A device for guiding and mixing light comprising of a light guide, at least a first set of light emitting elements in a first layer and at least a second set of light emitting elements in a second layer. Each of the light emitting elements being arranged to emit light of at least a first predetermined frequency. The second layer extending in a second geometrical plane different from a first geometrical plane of the first layer for producing a uniform light output from the aggregate of the constituting frequencies.

Abstract: An LED back-light unit and other devices using the LED back-light unit are discussed. According to one embodiment, an LED back-light unit includes a light guide portion that includes a light guide plate and a reflection plate coupled to the light guide plate, wherein the light guide plate has a light input part and a first connection part, and wherein the reflection plate has a second connection part connected to the first connection part, and a light source including at least one light emitting diode, the light source emitting light toward the light guide portion.

Abstract: Provided is an optical plate that resolves white screen generation while maintaining emission brightness, a backlight assembly and a display device including the same. The optical plate is a light guide plate for a liquid crystal display. The light guide plate includes at least one plane in which a plurality of uneven patterns forming crests and valleys are formed. The plurality of uneven patterns is formed such that the crests rise to a plurality of different heights.

Abstract: A backlight module, especially a side-edge type backlight module is disclosed. The backlight module comprises: a back plate having plural side walls, plural supporting elements locating on the connecting parts of the plural side walls, and a reflective sheet locating on the plural supporting elements. Therefore, an air space is maintained between the reflective sheet and the back plate of the backlight module. As a result, when the backlight module is operating, the heat produced by the light emitting units will not be transmitted to the reflective sheet of the backlight module during the operation. That is, even after long-term operation, the temperature of the reflective sheet of the backlight module can be maintained at a stable level.

Abstract: A device comprises a basic clock movement MB whose time indicators are driven by a first barrel connected to a first wheelwork and a first regulator organ, and an autonomous chronograph module MCA whose indicators are driven by a second barrel independent from the first, connected to a second wheelwork and a second regulator organ. The chronograph module is exclusively composed of mechanical elements. The frequency of oscillation supplied by its regulator is equal N times the frequency of oscillation supplied by the regulator of the base movement, with the coefficient N being definable according to a specific application of the chronograph, so that any chronograph module thus previously defined can work with the same base movement. The chronograph regulator remains constantly engaged with the corresponding wheelwork. The chronograph module allows a time interval to be read with a minimum precision of a hundredth of second.

Abstract: Cloud point monitoring systems for determining a cloud point temperature value for diesel fuel are provided. In one exemplary embodiment, a cloud point monitoring system receives diesel fuel in the tubular conduit and propagates a sound wave through the diesel fuel. The cloud point monitoring system further determines a cloud point temperature value indicative of a cloud point of the diesel fuel based on a phase shift of the sound wave propagating through the diesel fuel.

Abstract: A high-pressure tank is provided capable of simply and inexpensively suppressing gas leaks under low temperature condition. The high-pressure tank 10 comprises a tank main body 11 having the opening part 13, in which high-pressure gas is filled, and the reinforcement member 12 covering the outer surface of the tank main body 11 and reinforcing the tank main body 11. The tank main body 11 is provided with the outer projecting part 15 being uncovered with the reinforcement member 12 at a position different from the opening part 13. This outer projecting part 15 is heated from the outside of the tank main body 11 by the electric heater 30 to heat the tank main body 11, and thereby suppressing degradation of the sealing properties of the seal member 22.

Abstract: A locking device for securing a temperature sensor on a heat sink, includes a support seat and a catch fixed to the heat sink and respectively located at two opposite sides of the sensor, and a tab connecting with the support seat and the catch and pressing the sensor against the heat sink downwardly. The support seat includes a bent sheet secured on the heat sink and a pair of rings. The catch includes a bent flake secured on the heat sink and a barb extending downwardly from the flake. An end of the tab is bent to form a hem pivotably connected to the support seat at a position between the rings. An opposite end of the tab defines an opening, which engages the barb therein to thereby lock with the catch.

Abstract: A shoulder joint is provided. The shoulder joint includes a main support, a fold-out arm, first and second carriages arranged on the main support, and a first coupling that is operable to couple the first and second carriages together. The fold-out arm is attached by a pin to the second carriage, and the first carriage is connected to the fold-out arm in such a way that when the first and second carriages are operable to move towards each other, the fold-out arm is folded out by pivoting around the pin. The first coupling is operable to couple the first and second carriages together when the fold-out arm is folded out, and the first and second carriages are operable to move jointly in at least one direction when coupled together.

Abstract: A radiation detecting cassette is disposed in a desired position between a bed and a patient in an operating room. After a detector-side connector and a bed-side connector are connected to each other by a cable, an image capturing apparatus captures and records radiation image information of the patient in a radiation detector. The recorded radiation image information is transmitted from a transceiver of the bed to a console by way of wireless communications in a communication range selected by a selector of the bed, then processed by the console, and transmitted to a display device, which displays a radiation image based on the supplied radiation image information.

Abstract: A radiation protection device attaches to the C-arm of a fluoroscope and shields and collimates the X-ray beam between the X-ray source and the patient and between the patient and the image intensifier. One embodiment has a radiation shield of X-ray opaque material that surrounds the C-arm of the fluoroscopy system, the X-ray source and the image intensifier. A padded slot fits around the patient's body. Another embodiment has conical or cylindrical radiation shields that extend between the X-ray source and the patient and between the patient and the image intensifier. The radiation shields have length adjustments and padded ends to fit the device to the patient. The radiation protection device may be motorized to advance and withdraw the radiation shields. A blanket-like radiation shield covers the patient in the area surrounding where the X-ray beam enters the body.

Abstract: By reducing the component count, a more compact linear motion guide unit having sealing structures capable of maintaining high sealing performance between slider and guide rail over a long term is realized. A rubber-made end seal, attached to each end face of a slider slidably straddling a guide rail, has a lip portion integrally formed on a contact face with the guide rail, and a recessed portion formed in a face opposite to a mounting face attached to the slider. A positional relationship is determined such that the lip portion is located closer to the slider than the recess bottom face is. An oil-impregnated wiper seal is mounted in the recessed portion of the end seal. A scraper is disposed along the outer side of the wiper seal mounted in the recessed portion, so that the wiper seal is fixedly interposed between the scraper and the recess bottom face.

Abstract: In this type of fluid dynamic bearing device, a dynamic pressure generating part having high molding accuracy is formed at low cost. A rotating member 2 includes a shaft part 9, and a holding member 10 as a thrust member provided in one end of the shaft part 9. In a partial annular region of a lower end surface 10a1 of a disk part 10a making up the holding member 10, a region where a plurality of dynamic pressure grooves 10a2 and a plurality of sectioning parts 10a3 formed between the plurality of dynamic pressure grooves 10a2 to section the respective dynamic pressure grooves 10a2 are arrayed spirally is formed. The above-described dynamic-pressure-groove 10a2 arrayed region is opposed to an upper end surface 8a of a housing part 8, and forms a thrust bearing clearance of a thrust bearing part T between the dynamic-pressure-groove 10a2 and the upper end surface 8a during the rotation of the shaft part 9.

Abstract: A bearing (crank bearing 6) is constituted of an upper bearing (61) that is attached to a cylinder block, a lower bearing (67) that is attached to a crank cap, and a bearing filter (71) for filtering engine oil. The bearing filter (71) is fitted in an oil hole (62A) of the upper bearing (61).

Abstract: Surfaces of the raceway grooves of the outer and inner rings, a surface of each ball and all surface of the cage are coated with titanium oxide. In other words, hydrophilic layers made of titanium oxide are formed on the surfaces of the raceway grooves of the outer and inner rings, the surface of each ball and all surface of the cage.

Abstract: It is an object of the present invention to provide a cage that can be used in a cryogenic-temperature environment or a vacuum without providing the cage with a complicated construction and without performing special treatment and a bearing using the cage. A cage made of resin has an annular main body having a plurality of pocket portions radially penetrating the main body; and a plurality of pocket members, provided on the annular main body, which hold rolling elements of a rolling bearing. The main body is a molding of a first resin composition consisting of a first resin and a solid lubricant mixed therewith; and at least a rolling element-retaining surface of each of the pocket members is made of a second resin composition containing fluorocarbon resin as a main component thereof. The molding of the first resin composition has a tensile strength of not less than 30 MPa and a heat-resistant temperature of not less than 200° C. The second resin composition is a fluorocarbon resin composition.

Abstract: A cage includes a radially inward-side annular plate, a radially outward-side annular wall, a plurality of pillar portions, and pockets formed in the pillar portions. Rollers are rotatably retained in the pockets. An inner peripheral surface of the radially outward-side annular wall is formed so as to be oblique toward a radially outward direction. A radially outward-side end surface of each of the rollers has a spherical surface shape.

Abstract: A hybrid fiber/copper connector assembly which permits repair of damaged fibers or copper conductors carried by a hybrid fiber/copper cable without requiring replacement of the entire connector assembly or the cable is disclosed. The hybrid fiber/copper connector assembly disclosed also allows individual hybrid fiber/copper connectors of the assembly to be converted from one gender to a different gender. The hybrid fiber/copper connector assembly disclosed also allows the individual hybrid fiber/copper connectors of the assembly to be converted from being hybrid fiber/copper connectors to being only fiber connectors or only copper connectors.

Abstract: An off-axis misalignment compensating fiber optic cable plug is provided. The plug has a cable interface to engage a fiber optic core end, where the fiber optic core has a cross-sectional area. The plug also includes a lens having a first surface to transceive an optical signal with a jack. The first surface has a cross-sectional area at least 30 times as large as the core cross-sectional area. The lens has a second surface to transceive optical signals with the fiber optic line core end. In one aspect, the lens has an axis and the lens first surface is convex with a radius of curvature capable of receiving an optical signal beam with a beam axis of up to ±2 degrees off from the lens axis. Even 2 degrees off-axis, the lens is able to focus the beam on the fiber optic line core end.

Abstract: A hybrid fiber/copper connector assembly which permits repair of damaged fibers or copper conductors carried by a hybrid fiber/copper cable without requiring replacement of the entire connector assembly or the cable is disclosed. The hybrid fiber/copper connector assembly disclosed also allows individual hybrid fiber/copper connectors of the assembly to be converted from one gender to a different gender. The hybrid fiber/copper connector assembly disclosed also allows the individual hybrid fiber/copper connectors of the assembly to be converted from being hybrid fiber/copper connectors to being only fiber connectors or only copper connectors.

Abstract: One embodiment includes an integrated boot and release slide having a release slide and a boot. The release slide includes a main body, a plurality of arms, and a plurality of coupling structures. The arms extend from a first end of the main body. The coupling structures extend from a second end of the main body opposite the first end. The boot is overmolded over the coupling structures of the release slide and defines a cavity configured to slidably receive a communications cable.

Abstract: A manufacturing method of an optical communication module for manufacturing the optical communication module, including the sequentially performed steps of: (1) mounting a light-emitting element and a light-receiving element on a side surface of a sub-mount substrate and mounting the sub-mount substrate on a printed circuit board such that the light-emitting and -receiving directions of the light-emitting element and light-receiving element are parallel to the printed circuit board; (2) aligning an optical waveguide; and (3) dropping resin solution on an area of the sub-mount substrate including an optical waveguide end and the light-emitting element or the light-receiving element, and curing the resin solution. According to the present invention, it is possible to provide an optical communication module which can be made thin, small and cheap.

Abstract: An optical module includes: an optical semiconductor section including a first lead, a second lead with one end portion opposed to one end portion of the first lead, an optical semiconductor element bonded onto the first lead, and a first molded body in which the optical semiconductor element, the one end portion of the first lead, and the one end portion of the second lead are embedded; and an optical element section including a third lead, a fourth lead with one end portion opposed to one end portion of the third lead, and a second molded body in which the one end portion of the third lead and the one end portion of the fourth lead are embedded and which can change the optical path of at least one of emitted light from the optical semiconductor element and incident light on the optical semiconductor element. The other end portion of the first lead and the other end portion of the second lead protrude from the first molded body in directions opposite to each other.

Abstract: A display device comprises a housing, an image capture device and a screen mounted to the housing. A drive platform is mounted to the housing. The drive platform comprises: a rotatable part to which the image capture device is mounted; a stationary part having a chamber to receive the rotatable part and a capture window to expose the image capture device; and at least one piezoelectric motor which rotates the rotatable part to pan and tilt the image capture device within the capture window.

Abstract: There are included an antenna transmitting and receiving information through a radio communication with a RFID circuit element, a signal processing circuit and a transmission portion of a radio frequency circuit configured to execute write or read of information with respect to an IC circuit part of the RFID circuit element, a tape-feeding-roller drive shaft for feeding out a base tape from a first roll, a cutter configured to cut the base tape fed out by this tape-feeding-roller drive shaft to a predetermined length to produce a RFID label, a print head making a print in a predetermined print region of the base tape, and a control circuit configured to control this print head so as to be capable of being switched between the print in a forward direction and the print in a rotation direction inverting this forward direction with respect to a predetermined print region.

Abstract: A hand operated marking device includes a pair of housings movably interconnected together, a first one of the housings adapted to be received in a second one of the housings responsive to a compression of the housings; a printer located along a bottom surface of the first housing, the printer including a movable printhead exposed through an aperture of the first housing; a moving mechanism housed within at least one of the housings, the moving mechanism for moving the printhead in a printing direction responsive to the compression of the housings; and a shutter for covering the aperture of the first housing, the shutter adapted to be retracted as the moving mechanism moves the printhead. The moving mechanism includes a pair of arms pivotally mounted at one end to the second housing and at the other end to the printhead, and further comprising an extension return spring extending between the other end of the arms and the first housing.

Abstract: A device, method, and system for delivering toothpaste to a user. In one embodiment of the invention, a droplet for delivering toothpaste to a user can be provided. The droplet can include a dissolvable outer membrane defining a volume with toothpaste inside the volume. The outer membrane can include a tail portion, which is configured to be embedded into the bristles of a toothbrush. The droplet further can include one or more extensions coupled to the outer surface of the outer membrane, the one or more extensions can have a triangular shape, a barb shape or the like. In one aspect of this embodiment, the droplet further can include a logo, a cartoon character, a word or the like printed on the outer membrane.

Abstract: A package for dispensing a substance is described, where the package includes a stiff sheet that has a score formed on and traversing the first surface. The package also includes a flexible sheet defining a cavity for receiving the substance between the stiff sheet and the flexible sheet. The package also includes an applicator having a porous material pad, where the applicator is attached to the stiff sheet over the score by two hinges. The stiff sheet is configured to be folded about the score to cause the substance to be expelled from the cavity through a metering hole into the porous material pad and the two hinges allow the porous material pad to remain generally flat as the stiff sheet is folded.

Abstract: A medical skin applicator apparatus includes a fluid housing having a fluid chamber for storing a medical agent and an applicator coupled to the housing. The fluid housing has a penetrable wall to permit access to the fluid chamber and release of the medical agent therefrom. The applicator includes an applicator surface for applying the medical agent to a patient. The applicator has a penetrating member adapted to penetrate the penetrable wall of the fluid housing upon achieving a predetermined coupled relation of the fluid housing and the applicator, to thereby permit the medical agent to be dispensed from the fluid chamber and applied to the patient with the applicator surface.

Abstract: The present invention provides a direct liquid-writing instrument without ink leakage from the pen-tip even after a long period of use. Specifically, it provides a direct liquid-writing instrument having an ink-retaining part in a bellows-like shape, in which at least the ink-retaining part in a bellows-like shape is made of: 20 to 95% by mass of (A) a polyamide-based resin; and 80 to 5% by mass of (B) at least one resin selected from a styrene-based resin, an olefin-based resin, and a polyphenylene ether resin.

Abstract: A system includes a support, an actuator and a swivel joint coupling the actuator to the support. The swivel joint includes a first base member, a second base member, and a spider positioned between the first and second base members. The spider includes a center support and first and second bearing support elements. Each bearing support element has an arcuate surfaces adapted to form joints with the first and second base members. In one embodiment, at least one shim element disposed is between at least one of the first and second bearing support elements and the center support.

Abstract: An eyebolt assembly is provided in which a skirt member is reinforced by radially projecting diametrically extending ribs. A fixed lifting eye projects from one side of the skirt, and a mounting stud projects from the opposite side. The mounting stud is double threaded with one thread being adapted to mate with a threaded bore in the body of the eyebolt assembly, and the other thread being matched to a threaded bore in a load. The same eyebolt body can be employed with a plurality of different mounting studs, which simplifies inventorying eyebolt assemblies to meet all of the different threaded bores that may occur in different loads. Only the mounting studs need to be threaded to match the loads. The skirts are provided with striking faces so that they can be tightened and loosened by striking them with a hammer.

Abstract: A joining component is joined to a joint component. The joining component includes an insertion hole and two fitting holes. The joint component includes a fusible shaft at a position corresponding to the insertion hole and two protrusions at positions corresponding to the fitting holes. The joining component is placed on the joint component such that the fusible shaft is inserted into the insertion hole, and the protrusions fit into the fitting holes. The fusible shaft is then fused by using ultrasonic vibrations.

Abstract: One embodiment of the invention relates to a flexible sled that conforms to the contour of the pavement for applying a liquid emulsion onto a pavement surface comprising a rigid frame with flexible squeegee assembly adapted to be towed along a pavement surface. Another embodiment of the invention includes a hopper assembly for distributing aggregate. Another embodiment of the invention includes a sled for repairing ruts in wheel lanes of a road. Another aspect of the invention is a polymer emulsion composition having a high coefficient of friction comprising a mixture of polymer resin blended with a mixture of cement and angular sand aggregate and titanium dioxide to provide a solar reflectance index number that ranges from 0.30 to 0.38 and a friction number in the range of 45 to 55.

Abstract: The invention relates to a device for compacting road paving materials, comprising a screed board which is fastened on a road finisher and extends at a right angle to the direction of travel of the road finisher and a tamper that is mounted in front and/or behind the screed board. The tamper has a tamper strip that can be driven to perform a striking upward and downward movement and the interior of which is equipped with an electrical heating unit in the form of a rod-shaped heating element that can be clamped into a recess of the tamper strip. The device according to the invention is characterized by a spring accumulator receiving a heating element in the direction of the striking upward and downward movement for clamping the heating element.

Abstract: The invention relates to a device for compacting road paving materials, comprising a screed board which is fastened on a road finisher and extends at a right angle to the direction of travel of the road finisher and a tamper that is mounted in front and/or behind the screed board. The tamper has a tamper strip that can be driven to perform a striking upward and downward movement and the interior of which is equipped with an electrical heating unit in the form of a rod-shaped heating element that can be clamped into a recess of the tamper strip. The device according to the invention is characterized by a spring accumulator receiving a heating element in the direction of the striking upward and downward movement for clamping the heating element.

Abstract: A sand drift prevention method in which a plurality of columnar sandbags made of a tubular knit fabric are placed so as to cross over one another, and in such a pitch that 3 to 30 sandbags are disposed for every ten meters, and in which the cross-sectional area of each of the columnar sandbags is 10 to 400 cm2. A method of forming and improving the vegetation in sandy soil in which drift of sand is prevented by the sand drift prevention method, a plant desired to grow is grown in the sandy soil surface exposed as being surrounded by columnar sandbags placed so as to cross over one another. A tubular knit fabric for a columnar sandbag employed in these methods, and, in particular, the tubular knit fabric knitted by use of a polylactic-acid fiber.