Abstract: Impact instrument for joining prosthetic implants, comprising a housing which accommodates a striker pin, a first spring element associated with the striker pin, a release device and, at least in part, a striking piece, wherein the striking piece projects from the housing at an end face, wherein the release device is movable between a fixing position and a release position, wherein the striker pin is spaced apart from the striking piece the fixing position, wherein the release device moves automatically from the fixing position to the release position when the striking piece moves axially into the housing, in order to release the striker pin once the release position has been reached, so that the latter moves in the direction of the striking piece, accelerated by the first spring element.

Abstract: A spot weld removal punch preferably includes a punch body, a centering pin, a venting roll pin and a compression spring. The punch body preferably includes a punch shank, a body portion and a punch flange. The punch shank extends from one end of the punch flange and the body portion extends from an opposing end of the punch flange. A pin bore is formed in the end of the body portion to receive the centering pin and the compression spring. The venting roll pin is transversely inserted into the pin bore to retain the centering pin. A second embodiment of a spot weld removal punch preferably includes a punch body, a centering pin, a pin retention device, a replaceable impact head and a compression spring. The replaceable impact head may be replaced when thereof wears out.

Abstract: A dust collector for use with a power tool comprises a housing, a telescoping suction pipe coupled to the housing, a suction fan positioned in the housing and operable to generate a vacuum in the suction pipe, a dust container coupled to the housing and positioned upstream of the fan, a filter at least partially arranged in the dust container, and a filter cleaning mechanism. The filter cleaning mechanism includes an anvil, a striker moveable between a first striker position, in which the striker is spaced from the anvil, and a second striker position, in which the striker is in contact with the anvil. The filter cleaning mechanism further includes an actuator moveable between a first actuator position and a second actuator position, in which the actuator is moved closer to the anvil than in the first position, and a first spring biasing the striker toward the anvil.

Abstract: A high bandwidth differential test probe for measuring a device under test is provided. The test probe comprises a first probe tip arranged at a first coaxial connector relative to a first rotational axis, and a second probe tip arranged at a second coaxial connector relative to a second rotational axis. For adjusting the distance between the first probe tip and the second probe tip, the first coaxial connector is rotatable with respect to the first rotational axis and the second coaxial connector is rotatable with respect to the second rotational axis. Additionally, a tilt angle between the first probe tip and a plane comprising both the first and second rotational axes, and a tilt angle between the second probe tip and the plane, is not equal to zero.

Abstract: A directional translating clamping device comprises a housing that includes a distal housing end and proximate housing end separated along a central axis, and a housing recess at the proximate housing end and extending along the central axis end. The device also includes a slide located in the housing recess, and the slide comprises a slide recess at a slide proximate end co-axial with the housing recess, and a detent in a radial sidewall of the slide prevents the slide from translating beyond a predetermined axial distance along the central axis. A spring is located in the housing recess and exerts an axial force on the distal end of the slide. A stub shaft extends from the distal end of the housing. A roller ball assembly includes a threaded sidewall that engages with the slide recess to removably and replaceably secure the roller ball assembly to the slide.

Abstract: In a punch device (100) with a marking element (110) for marking drilled holes to be applied with positional accuracy for the purpose of the positionally accurate positioning of an object to be attached to a wall (200), in situ correctable and thus accurately definable marking of drilled holes to be inserted into a wall (200) for the attachment of objects to the wall (200) is achieved in that the marking element (110) at least for the most part is reciprocally mounted inside a housing (120), which is provided with a front positioning element (130) close to the wall provided with a central opening (131) for mounting a supporting element (150) connected to the marking element (110) for positioning the punch device (100) on a wall (200), as well as with a mounting element (140) provided with a drilled hole (141) for mounting a supporting element (150) connected to the marking element (110), which mounting element has a means for the releasable attachment of the punch device (100) to the object to be attached to

Abstract: There is provided a measurement apparatus for obtaining conductivity measurements of a surface of a structure. The apparatus has a housing, and a pair of support legs depending from the housing. Each support leg has a first end, wherein the first ends define a support leg plane. The apparatus has a pair of conductive measurement probes slidably disposed between the support legs, and at least one force applying member coupled to the housing. The at least one force applying member applies a biasing force to cause the pair of conductive measurement probes to extend a predetermined distance beyond the support leg plane. A downward applied force applied to the housing, when the conductive measurement probes are in contact with the surface, causes a displacement of the conductive measurement probes, until the first ends of the support legs contact the surface. Conductivity measurements between the conductive measurement probes are consistently obtained.

Abstract: A hand-held spring-driven impact device (e.g., spring tool) configured with removable and replaceable tips. The spring tool may include a helical spring that is coupled to a first anvil at one end and a second anvil at the other end. The spring tool may include a locking mechanism on the first anvil and/or the second anvil. The locking mechanism may be configured to securely fasten a tip to the spring tool. The tip may include a single-sided tip or a double-sided tip. The spring tool may include an ergonomically curved gripping surface and/or a friction component to assist in holding the spring tool. In some examples, the spring tool may include a ball bearing situated between the first anvil and the second anvil to transfer impact force when applied at an angle. Additionally, the spring tool may include a cover to protect the spring during use.

Abstract: A tube for a tattoo machine has a tube portion and a grip portion. The tube portion has a first ink storage cavity, and the grip portion extends about the tube portion so that the proximal end, the distal end, and the sidewall of the grip portion cooperate with the tube portion to define a second ink storage cavity. The second ink storage cavity is in fluid communication with a needle receiving passage of the tube portion and at least a portion of the sidewall is flexible so that upon application of a compressive force on the flexible portion of the grip portion, a volume of ink is transferable from the second ink storage cavity, into the needle receiving passage, and into the first ink storage cavity.

Abstract: A multipurpose tool is provided. The tool including a housing having a first end and an opposing second end. A hammer portion extending from the first end, the hammer portion having at least one surface configured to strike a fastener in operation. The tool further includes a drill portion slidably disposed within the housing, the drill portion including a chuck configured to receive a drill, the chuck being positioned within the housing when in a first position and at least partially extending from the second end when in a second position.

Abstract: The self-contained force magnifying chisel disclosed herein includes a chisel portion, a striker, at least a portion of which is disposed within the chisel portion, and a spring, a least a portion of which is disposed within the chisel portion. The spring attaches to both the chisel portion and the striker. When the striker is pulled by a user, the spring stores mechanical energy. When the user releases the striker, the striker impacts on the chisel portion transferring the mechanical energy stored in the spring into a driving force. The force is magnified by a chisel blade on the chisel portion of the self-contained force magnifying chisel and applied to a workpiece.

Abstract: A system for delivering a surgical tack in tissue includes a driver, comprising: a shaft having a slot and a channel; and a handle slidably connected to said shaft and having a driving mechanism, said driving mechanism having a driving pin for providing a downward force through said shaft; and a tack cartridge having a plurality of tacks and adapted to be received in said slot and further adapted to feed said tacks between said driving mechanism and said channel.

Abstract: The device comprises: a casing (10) having an open end (10?); a composition support (12) that is movable in the casing between a retracted position and an extended position; and a control piece (16) that is suitable for being moved so as to cause the support to move. The device further comprises first and second magnetic elements (20, 22) that are secured to the support (12) and to the control piece (16) respectively. When the piece is in its first position and when the support is in its retracted position, the magnetic forces between these elements hold the support. When the control piece is moved, the magnetic forces are reduced and enable the support to move towards its extended position.

Abstract: A glass breaking tool for breaking a glass pane comprising a head arranged for contact with the glass pane, a handle movable with respect to the head and a pin crusher arranged in the head and handle wherein the tool is adjustable between a rest position in which the pin crusher is locked inside the head, a releasing position in which the pin crusher is released inside the head and a breaking position in which a tip of the pin crusher is at least partially outside the head.

Abstract: A system for delivering a surgical tack in tissue includes a driver, including: a shaft having a slot and a channel; and a handle slidably connected to the shaft and having a driving mechanism, the driving mechanism having a driving pin for providing a downward force through the shaft; and a tack cartridge having a plurality of tacks and adapted to be received in the slot and further adapted to feed the tacks between the driving mechanism and the channel.

Abstract: A tool assembly is described herein. The tool assembly includes a housing assembly that includes a first end, a second end, and an inner surface that defines a cavity that extends between the first end and the second end along a longitudinal axis. A rod assembly is slideably coupled to the housing assembly and is orientated within the housing cavity such that a portion of the rod assembly extends outwardly from the housing first end. An impact assembly is positioned within the housing cavity and is orientated between the rod assembly and the housing second end. The tool assembly is operable in a first operating mode wherein the rod assembly is movable with respect to the impact assembly, and a second operating mode wherein the impact assembly contacts the rod assembly to move the rod assembly outwardly from the housing.

Abstract: A safety system for a vehicle, a vehicle provided therewith and a method for breaking a window. The safety system comprises a window breaker comprising a drive system and a pin driven by the drive system for breaking a window. A water sensor is operatively connected to the drive system for control thereof.

Abstract: A window breaker is provided that may include a housing, a pyrotechnic device and a piston. The housing may include a slot and a cavity having a first end and a second end. The slot may extend through a wall of the housing and into the cavity. The pyrotechnic device may be fixedly attached to the housing and at least partially disposed in the cavity. The piston may be disposed in the cavity between the pyrotechnic device and the first end. The piston may be movable away from the pyrotechnic device within the cavity from an undeployed position to a deployed position in response to actuation of the pyrotechnic device.

Abstract: A tool assembly is disclosed that provides reciprocating motion to a tip of the assembly. The tool assembly has a drive assembly, a shaft assembly and a retraction mechanism contained within a housing. The tip of the shaft assembly protrudes from the housing during a portion of the stroke of the drive mechanism and upon disengagement of a motor of the drive assembly, the tip of the shaft assembly is recessed within the housing of the tool assembly.

Abstract: A hole center marking system comprises a punch device and an alignment member. The punch device includes a body assembly and a punch movably disposed within the body assembly. The body assembly has a circular cross-sectional exterior shape at a first end portion thereof. An indenting tip portion of the punch is forcibly biased to a position within the body assembly adjacent the first end portion of the body assembly. The alignment member has a central bore configured for having the first end portion of the body assembly engaged therein. The central bore of the alignment member is size to provide a close-tolerance fit between the central bore and the first end portion of the body assembly.

Abstract: A track and punch SMR marking device, including a base, the base mounts for adjustment an SMR (spherically mounted retro-reflector), which in cooperation with a laser tracker beam locates the device precisely over an area where a punch mark is to be made, the base includes an upright sleeve, for holding a striker shaft, the striker shaft, at its lower end, includes a bevel, mating with the inclined surface of a cross slide, the cross slide, when it is urged forwardly, depresses a punch forcing it downwardly so as to provide a punch point or indentation upon the component to be worked.

Abstract: A windows-breaking emergency escape device including a main body, a hammer and a supplementary power apparatus, wherein the hammer and the supplementary power apparatus are installed on the main body. The front end of the hammer extrudes from the surface of the main body. The supplementary power apparatus will reserve enough power in advance to lessen an operating force and to release the reserved power to drive the hammer to break the car window when a car accident happened. Moreover, the main body of the device of the present invention includes a groove containing a cutter.

Abstract: An automatic optical center punch adapted to perform with high accuracy and ease of use is disclosed. The punch includes a spring-loaded hammer and a rotational latch mechanism. The rotational latch mechanism restrains the movement of the hammer to allow the spring to be compressed when pressure is initially applied to the punch by its operator. When the spring is fully compressed, the latch mechanism engages a cam surface, which causes the latch to rotate to release the hammer. The spring-loaded hammer makes contact with a punch head assembly, which causes perforation of the work surface to take place. Once the hammer has been extended by the spring, the latch engages a second cam surface, which causes the latch to rotate in the opposite direction to restrain the hammer in preparation for the next compression of the spring.

Abstract: An automobile escape hammer gun includes a body, a striking hammer and a lever. The body has a front and a lower passage formed in the body at the front. The striking hammer is movably mounted in the lower passage, is spring-loaded and has a bottom tip extending out of the body and an annular lip with a bottom formed in the body. The lever mounted pivotally in the body and has an inside end abuts the bottom of the annular lip and an outside end extends out of the body. Therefore, when the lever is pivoted, the inside end of the lever moves the striking hammer into the body. The bottom tip of striking hammer will impact rapidly a window of a vehicle to break efficiently the window when the annular lip escapes from the front end of the lever.

Abstract: A center marking assemblage or kit consisting of a stylus retaining quill having an upper end and a lower end; a stylus having an upper driving end and a lower scribing end, the stylus being slidably mounted within the stylus retaining quill, a group of differently sized scribing end centering guides, each guide among the group having a lower circular diameter matching a common drill bit size; and consisting of quick disconnect couplings integral with the lower end of the stylus retaining quill and with the upper ends of the scribing end centering guides, such couplings allowing such guides to be selectively and alternately attached to and removed from the lower end of the stylus retaining quill.

Abstract: The invention is a tool to be struck, or a striking tool, (collectively referred to as an “impact tool”), or alternatively, a cap, that will not suffer metal spall and the attendant dangers of spalling and flying or cutting metal slivers. The preferred mode is on a chisel (wood or cold) or repeated impact tool. The chisel would have a striking end cut square to the shaft. The striking end would be opposite the working end. Other tools such as impact wrenches, jackhammers, wedges, spikes, hammers, mallets or other tools being struck or striking forcibly benefit from the invention by use of a disk insert of polymeric material to alter ergonomic and noise characteristic.

Abstract: A combined writing and window breaking device (10) includes a pen portion (12), a biasing spring (14), a slide portion (16) that comprises part of the pen portion (12), and a breaking member (18). The breaking member (18) is cooperatively coupled to the pen portion (12) such that a user is able to slide the breaking member (18) from a non-biased to a biased position. When the device (10) is disposed proximate to a window to be broken, the user releases the breaking member (18) whereupon, the biasing spring (14) forcibly moves the striking member (18) into the window to break same. After completing the breaking operation, the user places the device (10) into his or her pocket to function as a typical writing instrument when required.

Abstract: A center marking assemblage or kit consisting of a stylus retaining quill having an upper end and a lower end; a stylus having an upper driving end and a lower scribing end, the stylus being slidably mounted within the stylus retaining quill, a group of differently sized scribing end centering guides, each guide among the group having a lower circular diameter matching a common drill bit size; and consisting of quick disconnect couplings integral with the lower end of the stylus retaining quill and with the upper ends of the scribing end centering guides, such couplings allowing such guides to be selectively and alternately attached to and removed from the lower end of the stylus retaining quill.

Abstract: A rescue tool for use by emergency rescue personnel is claimed. The rescue tool contains a handle body having a first end and a second end. A serrated blade is pivotally coupled to the handle body. The handle body also receives and retains a spring-loaded center punch. The center punch is used to fracture the glass in the window of an automobile, while the saw blade is used to cut any plastic laminates that bind the fragments of glass together. The rescue tool also contains a hooked blade that can be used to cut a seat belt and a valve stem valve remover for flattening the tires of an automobile.

Abstract: A multipurpose tool for use by firefighters and emergency personnel. The tool including a spanner wrench claw for turning firefighting hose connections, a wrench slot for turning natural gas valves, a glass-breaking spike, an open slot cutter for cutting seat belts and the like, and a foldable handle having an end shaped to be used as a pry bar. The tool may also be a spring-loaded glass breaker with a safety shield and another tool such as a seat belt cutter.

Abstract: A cable-cutting apparatus includes a housing, a cutter rod with a fixed blade, an impact rod, a resilient unit for biasing the impact rod to press against the cutter rod, a rotating unit, and a driving unit. Normally, an engagement surface of the impact rod abuts against an engagement surface of the cutter rod. When the blade presses a cable against a planar surface, and when a switch of the driving unit is actuated to rotate the rotating unit, the engagement surface of the impact rod moves rearward away from the engagement surface of the cutter rod against the biasing action of the spring until the push rod reaches a rear limit position, after which the impact rod is biased by the spring to move forward to impact on the cutter rod, thereby cutting the cable with the blade.

Abstract: An emergency window-breaking tool is carried in a quick-release rigid, tubular carrying case. A pivoting locking mechanism or “safety” incorporated into the end of the carrying case secures the window-breaking tool in the carrying case when not in use, permitting the window-breaking tool and carrying case to be worn on the person without risk of injury. When the window-breaking tool is needed, the locking mechanism is moved to an open position, permitting the window-breaking tool to be quickly withdrawn from the carrying case. The tip of the tool comprises a reciprocating punch that is pressed against the glass. Inward movement of the punch activates a compressing spring driving mechanism for a hammer inside the tool. Upon sufficient compression of the driving mechanism, the hammer is tripped, imparting a sharp blow to the punch, causing the punch to shatter the glass.

Abstract: A tool for cracking ice and frost includes an outer tubular member, a T-shaped handle fixedly mounted on an upper end of the outer tubular member, a cylindrical sleeve having an axial through hole and an end formed with a flange, a conical head having a conical portion at one end thereof, a neck portion adjacent to the conical portion and a threaded portion at another end thereof, an inner tubular member being formed an internally threaded portion at one end thereof, an externally threaded portion at another end thereof, and an inner neck portion at an intermediate portion thereof, a striking pin provided with a sharp point at a lower end thereof and a flange at an upper end thereof, a guiding pin formed a cylindrical portion, an enlarged bottom at a lower end thereof, a rod portion having a smaller diameter than said cylindrical portion, and a conical portion between the cylindrical portion and the rod portion, a first helical spring provided with an eccentric lower end and arranged between the inner neck po

Abstract: A glass breaking tool includes an elongate plunger which has a pointed head (i.e. ram member) at one end. The plunger, including the pointed head, is normally arranged within a housing. A contact block may be secured to the plunger at the second end thereof A coil spring may surround the plunger and may extend between the contact block at the second end of the plunger and a portion of the housing which may be substantially adjacent the first end of the plunger near the pointed head portion. The plunger is adapted for movement from its rest position where the pointed head is arranged within the housing to an extended position where the pointed head extends outside of the housing. Suction cups or adhesive is used to attach the tool to the portion of glass to be broken.

Abstract: A patient suffering from a condition of spinal muscle imbalance is treated by the application of controlled impact forces applied at specific points to the patient's neck. The point of application is to one side or the other of the spine at the rear of the patient's neck. The side to which the impact forces are applied is determined by areas of the body at which prior trauma has occurred that created the condition of spinal muscle imbalance. The forces are applied against the rear of the patient's neck directly below the head and at a force application point immediately at the splenius muscle and between the attachment of the superior border of the trapezius and the sternocleido mastoideus muscles to the patient's head. the impact forces are of a selected magnitude of between about four ounces and five pounds and are applied at a rising angle of about twenty five degrees toward the eye socket-temple area of the opposite side of the patient's head.

Abstract: Process for emptying liquids and/or gases from a container, in particular from a shock absorber, in which a tool is used to penetrate the wall of the container to create a drain opening, whereby the tool is driven into the container by means of a pressure pulse. The pressure pulse is thereby generated by means of a controlled propellant charge inside a tool propellant chamber.

Abstract: An emergency tool for use in breaking glass. The tool includes a handle member having an impact member slidingly carried within a channel therein. A spring is provided for advancing the impact member outwardly from the handle in order to break glass upon the impact member's contact therewith. A trigger lever is provided for compressing the spring and cocking the impact member such that upon activation of the trigger, the impact member advances forward for breaking glass. Also provided is a folding blade extendable from the handle, having a serrated edge for cutting seat belts, and a pry member for prying off objects. A spring actuated locking member is also provided for automatically locking the blade in an extended position.

Abstract: An electromagnetic percussion device, which includes a housing and an instrument which is connected to, and which extends beyond, the housing. The device further includes a piston body reciprocatable within the housing and adapted to impact the instrument. The piston body includes an intermediate region of a first diameter and an enlarged posterior head of a second diameter, with the second diameter being larger than the first diameter. The device also includes a driving member reciprocatable within the housing. The driving member includes a coupling element for slidably accommodating the head of the piston body, thereby coupling the driving member and the piston body together. A permanent magnet is connected to the driving member. Finally, an electromagnet coil is connected to the housing, the coil being operationally coupled to the permanent magnet so as to cause the reciprocation of the driving member.

Abstract: A self-centering impact hand tool 10 has a forward tool member 14 with an elongated forward tool body 15 extending from a tool tip 17 to an anvil surface 19 at a rear end 18. The hand impact tool 10 has a plunger member 40 with an elongated forward end 44 having an anvil surface 46 for engaging the anvil surface 19. An elongated coil spring 60 has reduced diameter spring ends 64 and 66 mounted in corresponding spring latching grooves 22 and 54, respectively. Each of the members 14 and 40 have finger gripping sections 21 and 52 that are formed with a series of annular grooves 80 forming finger rings 82 for enabling the user to easily grip and hold the tool member 14 during the operation of the tool and the expansion of the coil spring prior to the release of the plunger member 40. Upon release of the plunger member, the anvil surface 46 of the forward end 44 is driven into a rear section 36 of a driving piston 33 to drive a brad, or nail or center punch rapidly and forcefully into a work surface 12.

Abstract: An combination center punch and prick punch impact hand tool 10 has a center punch member 14 with an elongated center punch body 16 extending from a tool tip 20 to an anvil surface 24 at a rear end 22. The hand impact tool 10 has a prick punch member 40 with an elongated forward end 44 having an anvil surface 46 for engaging the anvil surface 24. An elongated coil spring 60 has reduced diameter spring ends 64 and 66 mounted in corresponding spring latching grooves 28 and 54, respectively. Each of the members 14 and 40 have finger gripping sections 26 and 52 that are formed with a series of annular grooves 80 forming finger rings 82 for enabling the user to easily grip and hold the tool member 14 during the operation of the tool and the expansion of the coil spring prior to the release of the prick punch member 40. Upon release of the prick punch member, the anvil surface 46 of the forward end 44 is driven into the anvil surface 24 with a very sharp impact.

Abstract: A device for punching holes in artificial fingernails comprising a piston-cylinder unit having a cylinder wall with an aperture in it extending across the whole of the cylinder. The aperture is banana-shaped in cross-section and wider than the internal diameter of the cylinder with the convex side of the aperture facing the piston. The pointed end of the piston has a sharp knife-edge. The hole punch is operated by holding it between the thumb and index and middle fingers and pressing, causing the pointed end of the piston to travel past the curved cylinder-wall aperture in which the artificial fingernail to be perforated has been placed.

Abstract: A impact hand stamping tool 10 has an imprint member 14 with an elongated hand stamp element 16 slidably mounted in a supporting sleeve element 18. The hand stamp element extends from an anvil end 50 to an imprint end 46 having a symbol face 48. The hand impact tool 10 has a plunger member 70 with an elongated forward end 74 having an anvil surface 76 for engaging the anvil surface 52. An elongated coil spring 90 has reduced diameter spring ends 94 and 96 mounted in corresponding spring latching grooves 26 and 84, respectively. Each of the members 14 and 70 have finger gripping sections 26 and 84 that are formed with a series of annular grooves 100 forming finger rings 102 for enabling the user to easily grip and hold the tool member 14 during the operation of the tool and the expansion of the coil spring prior to the release of the plunger member 70.

Abstract: An emergency escape tool is proposed for escaping from a car when an accident happens. Scissors for cutting a seat belt and a spike are provided. The spike is held at and retractably protrudes from a handle of the scissors. A tip of the spike is pressed against a window glass. A spike driver is housed in the handle. The spike driver usually urges the spike in the protruding direction. When the spike pressed against the window is displaced inwardly, the spike driver accumulates a compression force corresponding to the displacement. According to the accumulated compression force, the spike is promptly pressed toward the protruding direction so as to break the window glass.

Abstract: A tool holder assembly of the type used to operatively position leather working tools or the like designed to punch or stamp the material being worked. A mallet, maul or other heavy, hammer-type instrument strikes the tool and forces a work engaging end thereof into penetrating or stamping engagement with the leather or other material being processed. The subject tool holder assembly includes an elongated handle which is intended to be gripped by the hand of the user a spaced distance from a tool receiving portion of the assembly so as to eliminate the danger of the positioning hand of the user being struck by the mallet or like instrument as well as allowing for ease of positioning of the tool.

Abstract: A punch for forming a rectangular opening in cinder block. The punch includes a housing having a wall with a toothed edge and which is generally rectangular in crosssectional shape. A tube is secured to the housing and extends perpendicularly outwardly from the toothed edge so that the axis of tube is positioned within the interior of the area circumscribed by the toothed edge of the housing. A rod having a piercing point at one end is slidably mounted within the tube so that the piercing point is contained within the housing while the other end of the rod protrudes outwardly from the free end of the tube. In use, the housing and piercing point are both positioned against the cinder block. The rod and free end of the tube are then struck by a hammer in order to form the rectangular opening in the cinder block.

Abstract: A compact, easy-to-use sheet metal tool which is capable of receiving hammer blows and having a cutting element capable of penetrating the sheet metal to create a slot and to cut an extended slot in the sheet, the tool is further provided with a flat guide portion to facilitate proper orientation of the tool and to guide the tool along the surface of the sheet.

Abstract: A tool for cutting the ends from spent cans of paint, solvents, or coatings so that the can wall can be easily flattened to facilitate disposal. The tool includes a handle having a hand grip on one end and a cutting head on the other end. The cutting head presents a special circular cutting blade having two sharp points and a tapered configuration between the points and a pair of valleys. A weighted sleeve which slides on the handle applies a driving force to the cutting head, causing the sharp points to pierce the can end followed by slicing action from the remainder of the cutting edge to cleanly sever the end of the can.

Abstract: A can opener has an elongated rectangular base plate on which a can support box is centrally mounted. Four right angle corner rails extend upwardly from corners of the support box. The rails are connected by side support braces which form a square around midpoints of the corner rails. A top guide plate is secured to upper ends of the corner rails. A pair of slide bearings in the top guide plate mount a pair of slide rods. A transversely extending cross bar is secured to upper ends of the slide rods. The cross bar has a handle grip at each end. A blade mounting plate is secured to the lower ends of the slide rods. Four triangular tempered steel blades are secured to the side edges of the blade mounting plate. The blades extend perpendicularly downwardly from the blade mounting plate. L-shaped side support rods extend from opposite sides of the base plate to the side support braces. A pair of coiled springs extend between the transverse cross bar and the side support rods.

Abstract: Disclosed is a system for covering installed ceiling tiles without removal of the tiles from the ceiling. The system includes a novel facing for covering an installed ceiling tile, a method of applying the facing to the face of an installed tile and apparatus for carrying out the method. The novel facing includes a panel of at least semi-rigid material having a decorative surface, an underside surface and a flexible border which extends at an angle from and about the periphery of the decorative surface. The panel's underside surface is prefit to cover the face of an installed ceiling tile and is provided with selectively located pins which project from the underside surface of the facing. The disclosed method includes providing the aforementioned decorative facing and marking the face of the tile to provide selectively located marks on the face of the tile which are capable of aligning with the facing's selectively located pins to center the facing on the tile.

Abstract: Improvements in electrical test probes. The problem with known probes is that degree of penetration into a material being tested is inconsistent and complete penetration of protective coatings is not reliably achieved. The device and method of the invention provide consistent and reliable penetration and electrical contact. Probe assembly (30) includes a probe tip (44) for penetrating a protective coating (4). An off-center punch (42) transmits an axially outward impact force of a predetermined magnitude to tip (44) when tip (44) is urged against coating (4) to move tip (44) axially inwardly against the force of springs (56, 74). The force compressing spring (56) is suddenly released to allow spring (56) to apply an abrupt impact force to tip (44). The degree of impact and penetration may be adjusted for different coating thicknesses by adjusting the stiffness of spring (56).