Abstract: A method for repairing concrete structural elements reinforced with steel rebar includes steps of: removal of debris and rust; attachment of expanded mesh zinc metal for sacrificial passive corrosion protection; and overwrapping with flexible panels of fiber-reinforced polymer composite material.

Abstract: A hydrodynamic bearing (300) has a bearing surface adapted for receiving a shaft to rotate thereon. The bearing surface has a plurality of grooves (34) defined therein. The grooves for generating hydrodynamic pressure each has at least one interior surface (3421). The at least one interior surface has a sloping surface along a circumferential direction of the hydrodynamic bearing.

Abstract: A hydrodynamic bearing (300) has a bearing surface adapted for receiving a shaft to rotate thereon. The bearing surface has a plurality of grooves (34) defined therein. The grooves are used for generating hydrodynamic pressure. A depth of each of the grooves is changed in a sloping trend along the extension direction of the groove.

Abstract: A package opener having a rotating cutting wheel and adapted to cut and open packages having dye cut edges/flanges, or more specifically clamshell packages. An opposing groove is positioned to receive the blade of the cutting wheel. The package opener includes an edge receiving portion that is configured to receive the flange of the package and allow the opener to be moved along the same. The moving action results in an engagement of the package between the cutting wheel and the opposing groove, and the cutting of the same without any exertion or discomfort to the user.

Abstract: A safety razor has a handle (1) and a head structure (5) mounted for pivotable movement relative to the handle during shaving. The head structure (5) includes a motor (18) housed in a sealed chamber (9) for driving a device in use of the razor, such as to reciprocate a guard component or a blade, to vibrate the head structure, to actuate a dispensing device for delivering a shaving enhancement fluid, or to oscillate a support platform (101) on which a blade unit (110) is mounted. The shaving cartridge can include a guard component (38) with projections (39) which are moved towards and away from the skin being shaved when the guard component is reciprocated by the motor (18).

Abstract: A tube cutting device and method thereof are disclosed, which are adapted for performing a remote tube cutting operation upon a tube. The tube cutting device is comprised of: a holding unit; a cutting unit; and a control unit, connected to the holding unit and the cutting unit in a remote manner; wherein, the control unit is capable of directing the holding unit to hold and move a tube to a specific position and thereafter directing the cutting unit to perform a cutting operation upon the tube. With the aforesaid tube cutting device, an operator operating the tube cutting device can perform an cutting operation upon the tube remotely without having to contact directly with the tube, and thus the operator is prevented from having to stay in a working environment containing hazardous materials, such as radioactive pollutants, gas/liquid with strong acid or alkali, etc., so that the safety of the tube cutting operation can be enhanced.

Abstract: A folding knife having a blade locking member carried for sliding movement within a channel defined in the handle, the locking member being movable to a blade locking position when the blade is in an extended position. A spring, or other biasing means, such as an opposing magnet arrangement, provide a spring-like biasing of the locking member towards a blade locking. In one embodiment, the locking member extends substantially the full width of the handle and is accessible from either side of the knife handle. The locking member includes a ramp on the underside thereof for contacting a projection, or bump, on the rearward portion of the blade tang. An adjustable bushing is provided which allows for adjustment of the blade within the handle to provide for both ease of pivoting of the blade, while reducing any lateral play in the blade within the handle.

Abstract: A hair trimmer includes a handle having a housing including an actuation assembly rotatable relative to the housing, and a blade assembly including a reciprocating blade, a stationary blade and a blade assembly housing, the blade assembly constructed and arranged for being detachably engaged to the actuation assembly in a plane of rotation of the actuation assembly.

Abstract: A flower shears includes a stationary unit, a movable unit and a driving unit. The stationary unit has a first blade portion at an upper part thereof, a first transmission portion with teeth at a middle part thereof, and a first handle at a lower part thereof. The movable unit is pivotally connected at a middle part thereof to the stationary unit and provided at an upper part thereof with a second blade portion. The driving unit is pivotally connected to a bottom end of the movable unit and provided with a second handle at a lower part thereof and a second transmission portion with teeth meshed with the teeth of the first transmission portion, such that the second blade portion of the moveable unit can be driven by the second handle through the engagement of the teeth of the first and second transmission portions to pivotally move toward the first blade portion of the stationary unit for cutting things.

Abstract: The invention relates to a method for manufacturing barber scissors, wherein the scissor blades are pre-shaped from blanks by a predetermined degree of curvature in the direction facing away from the edge. This is followed by a step of welding on a hard metal material in the form of a welding bead on respective mutually facing faces of the scissor blades in order to form the edges, wherein the preliminary curvature of the scissor blades is neutralized owing to the influence of heat during the welding process. Subsequently the welding beads are ground so as to form the edges, and the scissor halves are pre-set and hardened. Then the barber scissors are hard-set in the assembled condition. The invention furthermore relates to barber scissors having such a configuration. Here the edges are present as massive material over the entire thickness of the scissor blades, so that even severally repeated re-grinding or re-setting of the barber scissors is possible without any loss of functionality.

Abstract: An improved head for a flexible line trimmer apparatus is provided. The improved head includes a metal tubing that extends through the head and surrounds a cutting line of selected length. The tubing is provided with a flared exit portal increasing the efficiency of the head. The contact surface eliminates the possibility of the cutting line fusing to plastic surfaces due to heating caused by friction. The head is surrounded with an interior perimeter counterweight to store kinetic energy on each end having a parabolic surface of revolution concentric with the axis of the tubing. A replaceable cartridge is provided to increase the ease of maintenance and the useful life of the head.

Abstract: This invention relates to a hand held cutting device, comprising a handle (62) and a cutting head (63), a cutting element (4) attached to said cutting head (63), a guiding and supporting element (2) extending from said cutting head (63), said guiding and supporting element (2) and cutting head (63) arranged to form a protecting periphery such that any part of a cutting edge (4A) of said cutting element (4) does not protrude outside of said periphery, said guiding and supporting element (2) including a distal portion (2A) arranged to form a feed channel (64) together with a portion (60) of said handle (62) and a support device (1) arranged on said guiding and supporting element (2), which support device (1) is arranged to interact with said cutting edge (4A) to improve cut ability, wherein said cutting element (4) is arranged to be none rotate ably, fixedly attached to said cutting head (63), by means of a locking device (40, 41) that provides for at least three different re-positioning and thereby renewing of

Abstract: A cutting tool comprising: a blade portion having a cutting edge and a body portion; wherein the blade portion is made at least in part of a composite material comprising an amorphous metal alloy forming a substantially continuous matrix, and a second ductile metal phase embedded in the matrix and formed in situ in the matrix by crystallization from a molten alloy.

Abstract: An improved drywall corner bead cutting device includes a cutting device base and at least one cutting blade assembly mounted on the cutting device base. The cutting blade assembly includes a corner bead support structure having a corner bead support wall operative to engage the upper wall of a drywall corner bead having a nose and wing sections. A corner bead support structure cutting blade is mounted on the corner bead support structure generally diagonally aligned relative to the corner bead support wall. A pivotably mounted cutting arm includes a cutting blade, the cutting blade positioned adjacent to and parallel with the corner bead support structure cutting blade.

Abstract: A drawing machine includes a plate, a clamping device, a drawing device and a driving device. The clamping device includes two jaws movable on a first surface of the plate, a following element movable on a second surface of the plate and a linkage for connecting the jaws to the following element. The drawing device includes a following element attached to the second surface of the plate. The driving device includes first and driving elements at a shaft. For clamping, the first driving element drives the following element of the clamping device for a different distance than the second driving element drives the following element of the drawing device. For releasing, the first driving element drives the following element of the clamping device as fast as the second driving element drives the following element of the drawing device.

Abstract: A laser device with a housing which features a beam outlet window (24), particularly a laser device with an electro-optical mechanism for generating a horizontal and/or vertical light beam, where the housing is at least partially enclosed by a protective covering (10). In order to provide secure protection for the beam outlet window without significantly altering the outer dimensions of the housing when the device is not in use, it is proposed that the protective covering (10) be pivotable about an axis that passes through the housing, and that it feature a first section which, depending on the pivot position of the protective covering, covers or exposes the beam outlet window (24).

Abstract: Disclosed is a shoe with a leveling instrument for checking out a relative height and a gradient of a ground including an outsole formed at a lower portion thereof, an upper of leather formed at an upper portion thereof, an x-direction leveling instrument formed at the girth of a front end portion of the outsole or the upper of leather, a top surface thereof being exposed to outside, and an y-direction leveling instrument formed at the girth of a side portion of the outsole or the upper of leather thereof, a top surface thereof being exposed to outside. Accordingly, the shoes having the leveling instrument can grasp the relative height and the gradient around the ground stepped by a user, whereby helping to correct a swing posture of a golfer, conduct a measurement operation of various engineers in architectural and civil engineering etc., and correct a walking posture of a walker.

Abstract: The present invention provides a slope measuring device for measuring the underlying sloped surface the device including a substantially planar surface having at least one circular opening with a graduated scale received within the circular opening, a pendulum placed between two spaced apart panels, one of which optionally including the scale. The pendulum generally includes a shaft extending laterally between the spaced panels with a pair of spacers received by the shaft at the shaft midsection with a wire extending downwardly from the shaft between the spacers and terminating at a weighted member having a pointed marker with pointed end, the pointed marker being generally adapted for placement along the graduated scale, the pointed end being associated with the measuring indicia for measuring the slope of the underlying sloped surface.

Abstract: The marking sheet for cutting drywall provides an adhesive sheet having a marking layer formed of a transferable medium for transferring an image of an opening to the rear surface of a sheet of drywall. The user may then use the transferred image as a template for cutting an opening through the sheet of drywall. The marking sheet is dimensioned and configured to correspond to the opening, and is adhered to a building frame element defining the opening. The drywall is positioned against the marking sheet to form the image. The drywall is then removed from the marking sheet, and the user cuts the opening in the drywall. The marking sheet may be used to form openings in drywall for electrical boxes, for HVAC ducts, for plumbing pipes, for electrical conduit, or for window or door openings by marking the border of the window or door openings.

Abstract: A measuring system (100) for flatness degree measurement includes a measuring instrument (10) and a processing device (20). The measuring instrument has a base (12), a guide column (14), a sliding member (16), a digital micrometer (18) and a holding member (19). The guide column is vertically attached to the base. The sliding member is moveably attached to the guide column. The digital micrometer is firmly fastened to the sliding member. The holding member is configured for fixing a workpiece (40) and has a reference-standard surface formed thereon. The processing device electronically connects with the digital micrometer. The processing device receives a plurality of measured values from the digital micrometer and displays a testing result after processing the measured values.

Abstract: A corner gauge for use in the construction of corners comprises a corner moulding (1), an extension arm (2) and a spirit level (3). The corner moulding (1) provides a predetermined internal angle a at an apex (6) and means for attachment to the extension arm (2) and the spirit level (3) to provide a corner gauge. Various mouldings providing different angles can be used to construct a corner with a particular angle. The spirit level (3), may be integrated into the moulding (1) for convenience and further spirit levels may be attachable thereto for increased accuracy. The extension arm (2), may also be substituted for a spirit level. A kit can be provides with a series of mouldings (1) with different predetermined angles, plus a spirit level (3) and extension arm (2).

Abstract: An apparatus for checking the diameter of crankpins of a crankshaft in the course of the machining in a grinding machine includes a Vee-shaped reference device, a measuring device associated with the reference device and including a feeler axially movable along the bisecting line of the Vee-shaped reference device, and a support device with a first arm rotating with respect to a support arranged on the grinding-wheel slide and a second arm rotating with respect to the first and carrying the Vee-shaped reference device. A guiding mechanism includes a limiting device, with mutually abutting surfaces and coupled to the support device, that guides the displacement of the reference device along a trajectory substantially parallel to the profile of the grinding wheel, allows the engagement of the reference device on a crankpin to be checked while the latter is orbitally moving, and does not interfere with the displacements of the support device caused by the orbital motion of the crankpin in the checking condition.

Abstract: The present device is a guide for positioning a heat-applied item over a garment, such as a t-shirt, or a nonwearable, such as a towel. The guide comprises a substantially flat sheet including a center line indicator, a plurality of longitudinal rule lines, a plurality of lateral rule lines, at least one pair of collar alignment rule lines, two wing sections, and a plurality of sleeve alignment rule lines. The guide includes intersecting longitudinal and lateral slots whereby the heat-applied item may be placed under the guide and positioned relative to the guide and garment by manual manipulation thereof through the slots. Another feature of the guide includes a plurality of vertical offset spacers fixed to the bottom surface of the sheet, such that a gap is formed between the guide and the garment for facilitating movement of the heat-applied item there between.

Abstract: A device and a method for measuring and quantifying waviness of sheet materials such as paper. The device in accordance with one embodiment comprises a base having a planar, smooth, and level upper surface for supporting a stack of sheets thereon, a plate-shaped weight for placing atop the stack of sheets, and a measuring device for measuring a vertical distance between a datum surface defined by the weight and a datum surface defined by the base. The measured distance is an indication of the height of the stack. In a preferred embodiment, the device also includes a programmed processor operable to calculate a “Wavy Ratio” based on the measured actual height H of the stack and a calculated “ideal” height of the stack, as Wavy Ratio=H/(n·t), where n is the number of sheets and t is the average caliper of the sheets.

Abstract: A vapor hood for a paper machine and/or paperboard machine, in particular for the drying section of a paper machine and/or paperboard machine, having a hood housing, wherein an inner housing surface of the hood housing delimits an internal space in which a process area, in particular the drying section, of the paper machine and/or paperboard machine is arranged or can be arranged, wherein on the inner housing surface in at least a sub-region there is arranged at least one condensation sensor for detecting a formation of condensate or an imminent formation of condensate in said sub-region.

Abstract: Embodiments of the present invention generally relate to an apparatus and methods for rinsing and drying substrates that include multiple rinsing and drying modules. Methods for arranging drying modules to enable high-throughput rinsing and drying of multiple substrates are also provided. In one embodiment a system for drying semiconductor substrates is provided. The system comprises a housing, a first drying module positioned within the housing, and a second drying module positioned adjacent the first drying module within the housing, wherein the first and second drying modules are oriented approximately vertically within the housing.

Abstract: A method of manufacturing heat-sensitive pharmaceutical powder is disclosed. The original pharmaceutical substances are dissolved in a solution or suspended in a suspension, which is sprayed through an atomizing nozzle and frozen in a cold gas phase or liquid nitrogen atomized directly in the spray-freeze chamber or gas jacket at the same time (for cooling purposes). The particles are freeze-dried at roughly atmospheric pressure in a down-stream fluid flow with exit filter thereby to remove moisture entrapped on or inside the frozen particles. The system has applicability for forming other powders.

Abstract: A dual-purpose, cooling/drying apparatus comprising a rotatable cooling/drying cylinder wherein air, steam, and water supplied from sources external of the cooling/drying cylinder are selectively introducible into and removable from a space defined inside the cylinder. The apparatus includes a first flow path through which the water is selectively introducible into the cylinder space, and a second, separate flow path through which either of the air and steam are selectively introducible into the cylinder space. The apparatus is characterized by a cooling mode, in which the water and air are selectively introducible into the cylinder space through the first and second flow paths, respectively, and a drying mode, wherein the steam is selectively introducible into the cylinder space through the second flow path.

Abstract: The invention relates to clog and sandal-type footwear having a sole and a heel strap. The heel strap is pivotable to be selectively secure the sole to a foot of a user or to be selectively retained by a channel formed in a heel portion of the sole. The heel strap may be permanently or removably attached to the sole.

Abstract: A sandal strap system for securing a foot of a wearer to a running sandal having a midsole assembly with a foot supporting surface. The sandal strap system includes a strap keeper attached to the midsole assembly and positioned adjacent to the foot supporting surface. An inner strap assembly includes a heel strap, an instep strap, and a forefoot strap, where the inner strap assembly is fixed to the midsole assembly. An adjustment strap attached to the heel strap extends through the strap keeper, and connects to an adjustment member, where the adjustment strap is adjustable at the adjustment member to simultaneously adjust the position of the heel strap, the instep strap, and the forefoot strap relative to the wearer's foot to tighten or loosen the strap system.

Abstract: A cushioning component for use in shoes including athletic shoes and, for example, running shoes includes a cushioning layer including a first zone and a second zone where the first zone comprises a progressive compression material. In one aspect, the first zone can comprise one or more areas defined within the second zone. For example, the first zone can comprise two areas, one area in a relative front portion of the shoe component and another area in a relative rear portion of the shoe component. Alternatively, in another aspect, the first zone and second zone can be arranged in a laminate-type relationship in the shoe component. In this regard, the first zone can be located either above or below the second zone. The shoe component can be employed as a traditional element of a shoe, such as a midsole or the outsole.

Abstract: An insole is described that can be placed with an insole receiving area of a slipper. The insole can be prepared by compression molding a structure comprising a foam layer having a first foam side and a second foam side. The insole includes a heel region, an arch region, and a toe region. The heel region includes a heel cushioning portion and a heel perimeter portion. The heel perimeter portion includes a retaining wall that extends above the top surface of the heel cushioning portion. The arch region includes an arch cushioning portion and an arch perimeter portion. The arch perimeter portion includes an arch support that extends above the top surface of the arch cushioning portion. The toe region includes a toe cushioning portion and a toe perimeter portion. A slipper and a method for manufacturing a slipper are described.

Abstract: The present invention relates to a shoe sole including a cushioning element. The shoe sole can include a heel cup or heel rim having a shape that substantially corresponds to the shape of heel of a foot. Further, the heel part can include a plurality of side walls arranged below the heel cup or rim and at least one tension element that interconnects at least one side wall to another side wall or to the heel cup or rim. The heel cup or rim, the plurality of side walls, and the at least one tension element can be integrally formed as a single piece.

Abstract: A convertible shoe includes a sole assembly having a forward end and a rearward end and including an outer sole receivable upon a walking surface, an inner sole to receive a foot of a wearer thereon, a toe section proximate the forward end, and a heel section proximate the rearward end. A convertible section is attached to the sole assembly, which moves between a retracted position revealing one of the toe and heel sections, and a deployed position opposing the one of the toe and heel sections. A recess formed into the sole assembly is provided to receive the convertible section in the deployed position.

Abstract: The present invention relates to a shoe, in particular a sports shoe, with a cushioning system comprising a lower sole element and an upper sole element. The cushioning system further comprises at least one lever having at least two arms where an angle ? between the arms lies within the range 0°<?<180°. The first arm is connected to a deformation element and the second arm is connected to one of the two sole elements, wherein the lever is pivotably arranged at the other sole element.

Abstract: A shoe contains an adjustable space for the foot and several fluidically connected chambers. In order to adjust the space for the foot, the flowability of a magnetorheological liquid can be influenced by at least one device generating a magnetic field thereby adjusting the space for the foot resulting in a better fitting of the shoe.

Abstract: A protective gaiter having a closed state and an open state. In the closed state the gaiter includes an essentially frustoconical shaped body. The gaiter includes an at least partially elastic upper edge forming a small diameter upper opening in the closed state, and a lower edge forming a large diameter lower opening in the closed state. The gaiter further includes a zipper fastener extending between the upper edge and the lower edge for selectively joining and separating opposing side edges of the body, thereby allowing the gaiter to alternate between the closed and open states.

Abstract: An ice resurfacing machine for small and medium-size indoor and outdoor ice skating rinks comprises a light towing vehicle, a resurfacing attachment, and a lifting and leveling assembly connecting them. To eliminate ruts in the ice, the machine removes only a thin layer of ice by scraping, fills the ruts with “snow” created by the scraping, skating, and precipitation, and adds water to fill the rut. The cold from the base ice and/or the atmosphere freezes the water and thus eliminates the rut. The machine may also be used to remove heavy snow or reduce the thickness of the ice. The resurfacing attachment includes a snow box which collects the snow and carries it along the surface of the ice.

Abstract: A snow deflector apparatus that easily attaches to a snowplow, a kit that includes two snow deflector apparatus and a control system, and to a snowplow system that includes two snow deflector apparatus and a control system. The snow deflector apparatus includes a deflector plate, a deflector plate rotator mechanism and at least one spring. The deflector plate is dimensioned to obstruct at least a substantial portion of the end of the blade of the snowplow such that an amount of snow that is sloughed off of the blade is minimized when the deflector plate is in a deployed position.

Abstract: A system is disclosed for automatically loading a scraper including a method for controlling an implement. The method includes receiving a first signal indicative of a speed of a driven component of the at least one traction device. The method also includes receiving a second signal indicative of a speed of the machine with respect to a surface. The method also includes receiving a third signal indicative of a desired slip of the machine with respect to the surface. The method also includes selectively receiving a fourth signal indicative of an operators desire to affect manual control of the implement. The method further includes determining a first parameter as a function of the received first, second, third, and selectively received fourth signals and controlling the implement as a function of the first parameter.

Abstract: This invention is add extra signs on product label to user can put necessary informations in using process. The signs to define the best time using of product after opening date include number groups, which user can mark date to recognize the expired day after opening date. The signs to define Self-identification of own products among different users to recognize their own previously used thing, include the number and alphabet groups which can describe their name as initial. The signs for management medicine taking process include number lines to mark date when user taking medicine. Those signs help them note their medicine taking previously or earlier, to remind user that their medicine actually were taken or not at that time. Another way to carry out purposes above is design a blank box for writing notes instead of mark on number or alphabet lines.

Abstract: A toothbrush, toothbrush tip or plurality of either in which an intended time period of use is marked on the brush. The marking informs the user of the toothbrush when to begin using that toothbrush, when to stop using that toothbrush, or both.

Abstract: Method and apparatus provide for attaching a planar electroluminescent lamp unit to the side of a billboard, and providing a media adhered to the surface of the lamp unit and to the side of the billboard adjacent the lamp unit, wherein the media has advertising indicia printed thereon. The lamp unit is connected to a source of power on the billboard.

Abstract: Solar Energy Powered Address Identifier is a solar powered sign equipped with a backlight and a channel or other means for insertion or display of a set of numbers representing a home or business address. To use Solar Energy Powered Address Identifier, a user chooses a location on a house or other structure that is easily viewed from the street and not obscured by any trees, shrubbery or other impediments. He then attaches the sign to the structure in the selected location. The sign typically utilizes solar power to provide power to the backlighting unit and illuminate the numbers. Sensors on the sign also permit the backlighting to intensify when car headlights or the like contact the sensors.

Abstract: Home Light is a sign equipped with a backlight and a mechanism for insertion of a set of numbers displaying a home or business address. To use Home Light, a user chooses a location on a house or other structure that is easily viewed from the street and not obscured by any trees, shrubbery or other impediments. He then attaches the sign to the structure in the selected location. The sign is then hard-wired to the structure's electrical system or utilizes another power source to provide power to the backlighting unit and illuminate the numbers.

Abstract: An apparatus for mounting signaling articles to a vehicle. In an embodiment of the present disclosure, the apparatus comprises a plate comprising a first surface and a second surface; an expansion fitting comprising a first surface and a second surface, wherein the first surface of the expansion fitting is oriented toward the second surface of the plate and the expansion fitting comprises a flexible material; a securing bolt comprising a head and a threaded portion, the threaded portion being inserted through a hole in the plate and a hole in the expansion fitting; and an attachment nut wherein and end of the attachment nut is threadably engaged with the threaded portion of the securing bolt.

Abstract: A display for tradeshows and the like, the display having a framework configurable between erected and collapsed configurations, wherein when in the erected configuration, the framework includes a front, opposed ends, and vertical elongate members presented with the framework proximate the ends. A pair of resiliently flexible end panels can be removably wrapped around the ends of the framework in a flexed position. The panels having a vertical end panel magnetic strips operably magnetically engageable with one of the elongate members. Front display panels, also with magnetic strips, can be engaged with vertical elongate members. The end panels can be secured in place by being at least partially sandwiched between the magnetic strip of front panels and the vertical elongate member.

Abstract: The invention comprises an improved recoil control device comprising a bolt head and an inertia block or slider for use in a variety of firearms. In one embodiment, the bolt head and inertia block are articulated so that the displacement of the bolt head results in a force component outside the firing axis of the barrel of the firearm. The device can be incorporated into firearms of a variety of sizes and configurations to produce recoil reduction and/or weight reduction advantages.

Abstract: There is provided a recoil shock device capable of obtaining the same recoil shock as that in a case where the weight of a piston is increased, without increasing the weight of the piston by separately providing a movable part and a weight of a piston/cylinder. There is also provided a recoil shock device capable of obtaining a recoil shock similar to that in a real gun, without damaging the outer appearance of a gun. In order to drive a weight to obtain imitated recoil, i.e., a recoil shock by operation of a movable part in a piston/cylinder which generates compressed air, a communicating part 31 which is moved in its retreating direction by the movable part 13 is provided, and a recoil spring 35 which receives a force transmitted to the weight 33 via the communicating part 31 by the movable part 13 so as to be in a compressed state is provided.

Abstract: A rail clamp mount that may be quickly and easily firmly secured to a rail, such as a rail carried by a gun, and that may be quickly and easily released from the rail. A preferred embodiment comprises a mount base including a first rail-engaging surface; a generally U-shaped, somewhat elastic clamping member carried by the mount base and including two second rail-engaging surfaces at the ends of the legs of the U, and a third second rail-engaging surface at the end of the center section of the clamping member between the legs of the U, the second rail-engaging surfaces being opposed to and transversely spaced from the first rail-engaging surface; a cam mechanism mounting the clamping member to the mount base for imparting transverse movement to the clamping member when actuated; and an actuator for the cam mechanism including a throw handle.