Abstract: A fuel supply and combustion chamber system for a portable power tool, such as, for example, a fastener-driving tool, wherein the fuel supply and combustion chamber system can utilize liquid or gaseous fuels. The fuel supply and combustion chamber system can comprise multiple combustion chambers for achieving predetermined combustion and power output characteristics. In addition, the fuel supply and combustion chamber system can utilize portioning valve structures for providing predetermined amounts of either a gaseous or liquid fuel into the portable power tool combustion chamber.

Abstract: A new and improved trigger control assembly (110) for switching the mode operation of the fastener-driving tool (112) between a sequential mode of operation and a bump firing mode operation. The trigger member (134) is provided with a pair of throughbores (140, 142) for alternating accommodating a pivot pin (144) by which the trigger member (134) may be pivotally mounted upon the fastener-driving tool housing (114) at two different positions whereby the workpiece contacting element (116) of the fastener driving tool (112) will engage the actuation lever (160) of the trigger member (134) at different positions so as to achieve the sequential and bump-firing modes of operation.

Abstract: A wedge-type anchor assembly, capable of meeting cracked concrete testing standards, comprises an anchor bolt component and a substantially C-shaped expansion sleeve component annularly disposed about the anchor bolt component. A plurality of annular grooves, threads, or teeth are disposed only about the forward end portion of the expansion sleeve component, as opposed to throughout the entire axial length thereof, so that when the anchor bolt component is moved axially through the expansion sleeve component, the maximum interference area (M.I.A.) and maximum interference volume (M.I.V.) can be generated between the anchor bolt component and the expansion sleeve component in a controlled and predictable manner, as well as between the expansion sleeve component and the internal peripheral side wall portions of a concrete substrate or substructure can be generated so as to enhance pull-out resistance and reliability of the anchor assembly within the concrete substructure or substrate.

Abstract: In-line roller skate (1) comprising in-line wheels (2) around which travels an endless rolling support (4) of the belt type, having regular transverse notches (40). At least the rear wheel (24) is mounted in such a way as to allow horizontal sliding, and at least the front wheel (9) is mounted in such a way as to allow inclined forward sliding along an elongate slot opening (12) formed in the side walls (13, 14) of the frame (6), so that the tension in the rolling belt keeps the axis of rotation (5) of the wheel at the bottom end of the slot. At least one element (27) is in rolling bearing contact with the lower portion of the rolling belt. This belt is preferably cylindrical in section, with its inner surface (28) housed in mating grooves (3) around the perimeter of the wheels. The skate may include a stone guard (45).

Abstract: An air return bulkhead for use within refrigerated cargo trailers comprises a pair of substantially coplanar panel members disposed within a vertically oriented plane. A first lower main panel member is fixedly connected to the front wall member of the cargo trailer, and the second upper secondary panel member, in addition to also being connected to the front wall member of the cargo trailer, is also removably connected to the first lower main panel member so as to provide repair or maintenance personnel with easy access to the lower region of the refrigeration unit when, for example, repair or maintenance procedures need to be performed upon the refrigeration unit.

Abstract: An exhaust check valve and piston return system wherein a main exhaust valve is opened as a result of combustion products from the combustion chamber being routed through a signal line. In addition, as a result of the opening of the main exhaust valve, an exhaust check valve, incorporated within a side wall portion of the cylinder housing at a location disposed downstream of the main exhaust valve, as considered in the direction of flow of the exhaust gases out from the combustion chamber, is forced to its open position so as to permit the combustion gases to be exhausted from the combustion chamber, thereby permitting the piston to move upwardly so as to complete its return stroke.

Abstract: A combustion chamber system, for use in connection with internal combustion powered fastener-driving tools, comprises a dual-level combustion chamber comprising first and second pre-combustion and main combustion chambers, and a dual-level rotary valve mechanism which is operatively connected to the dual-level combustion chamber so as to control the intake of the air/fuel mixture as well as the scavenging or purging of the exhaust gases or combustion products. The first and second pre-combustion and main combustion chambers are also separated by a plate having a plurality of apertures defined therein whereby multiple jets or flame fronts are defined throughout the combustion chamber system.

Abstract: A quick change knife blade assembly, for use in conjunction with a tape roll dispensing cartridge assembly of a case sealing machine, comprises a knife blade mounted upon a knife blade mounting plate. A pin plate is fixedly connected to mounting pins passing through the knife blade, and springs are interposed between the pin plate and the mounting plate so as to normally bias the pin plate to a position at which the mounting pins prevent the removal of the knife blade from the mounting plate. When the pin plate is depressed against the biasing forces of the springs, the mounting pins are moved so as to permit the knife blade to be removed from the mounting plate.

Abstract: A follower mechanism of the bypass type comprises a follower body which is normally spring-biased in the forward direction so as to, in turn, normally bias a strip supply of nail-type fasteners in the forward direction toward a discharge path along which the leading one of the nail-type fasteners will he driven and discharged out from the fastener-driving tool. A follower claw is normally spring-biased, around the pivotal axis of a pivot pin mounted upon the follower body, to a position at which the follower claw can engage the trailing one of the nail-type fasteners so as to bias the supply strip of nail-type fasteners in the forward direction. A latch-hook is integrally provided upon the follower claw for engaging an undercut region of the fastener-driving tool magazine end cap in order to retain the entire follower mechanism at a rearwardly retracted position within the magazine assembly of the fastener-driving machine.

Abstract: A new and improved remote, hot melt adhesive metering station (510), for supplying predetermined or precisely metered volumes of hot melt adhesive material toward applicator head or dispensing nozzle structures, comprises a plurality of rotary, gear-type metering pumps (518) which are arranged in a compact, longitudinally spaced manner upon an axially elongated drive gear manifold (512) such that the rotational axes of the plurality of rotary, gear-type metering pumps (518) are disposed parallel and adjacent to one side of the axially elongated drive gear manifold (512).

Abstract: Strand positional guide implements, for use in connection with hot melt adhesive strand coating applicator assemblies, comprise a plurality of V-shaped strand guide slots wherein the apex portions are oriented outwardly away from the hot melt adhesive material dispensing nozzles. Accordingly, an enlarged air space is effectively defined between the plurality of elongated strands and its respective hot melt adhesive material dispensing nozzle such that the plurality of elongated strands are not adversely affected by the heat or thermal radiation generated by or emanating from the hot melt adhesive material dispensing nozzles thereof.

Abstract: A swaddling blanket for infants, particularly newborn infants, and more particularly for premature infants, comprises an inner blanket and an outer blanket. Each of the inner and outer blankets comprises three flap members such that when all three flap members of the inner blanket, and all three flap members of the outer blanket, are folded over the infant, the infant is comfortably enclosed within six blanket layers in order to provide the infant with the requisite amount of warmth. The baby is also placed upon a support cushion effectively built into the swaddling blanket such that the baby's head, neck, and spinal regions are adequately supported.

Abstract: A filter bowl and filter cover assembly is provided wherein the filter bowl is adapted to be easily mounted upon and removed from the filter cover by a plurality of bolt fasteners as a result of the bolt fasteners, connecting the filter bowl to the filter cover, being loosened to a predetermined degree and rotating the filter bowl relative to the filter housing in a clockwise direction so as to permit the head portions of the bolt fasteners to pass through key-hole shaped apertures formed within the filter cover. The filter bowl is able to likewise be easily and quickly re-installed upon the filter cover as a result of a reversal of the aforenoted removal procedures.

Abstract: Apparatus for repairing out-of-round cores, upon which strapping material has been coiled, when the core and coiled strapping material assembly has been deformed and is therefore no longer capable of being mounted upon strapping unwinding and dispensing apparatus. The repair apparatus comprises a pair of diametrically opposed, substantially semi-circular shoes which are mounted upon a pair of diametrically aligned rod members that are operatively connected together by means of a diametrically oriented expansion member. The apparatus is adapted to be disposed internally within the deformed core and coiled strapping material assembly, and when the expansion member is diametrically extended, the pair of semi-circular shoes will be forced into contact with the inner periphery of the deformed core and coiled strapping material assembly thereby returning the same to a truly round configuration.

Abstract: A new and improved nailing bridge system which comprises a single nailing gun which is mounted for movement along a stud frame locus or a seam locus, defined by means of abutting sheets of wall sheathing, covering, paneling, or the like, wherein the single nailing gun can be moved to any one of effectively an infinite number of positions so as to permit nails to be driven into the covering, sheathing, paneling, or the like, in order to fixedly secure the sheathing, covering, paneling, or the like, to underlying stud frame members of a wall structure or wall panel member. Stitcher guns are also mounted upon a separate support beam so as to fixedly secure the sheathing, covering, paneling, or the like, to the upper and lower plate, header, or footer members of the wall structure or wall panel member.

Abstract: A system for mounting the front or rear sealing tape application roller of a carton or case sealing apparatus wherein the front or rear tape application roller is able to be quickly and easily replaced upon its roller shaft without the need for special tools. A spring-biased detent pin which is spring-biased between a radially outwardly position at which the detent pin so as to be engaged with and block removal of the roller from its roller shaft but which may be depressed radially inwardly so as to be disengaged from the roller and thereby permit the roller to be removed from its roller shaft.

Abstract: A knife blade guard locking mechanism, for use in conjunction with the sealing tape application rollers of a tape cartridge assembly of a case sealing machine, is adapted to be operatively connected to a spring biasing mechanism of the sealing tape application rollers such that when the sealing tape application rollers are disposed at their inoperative positions, the knife blade guard locking mechanism is disposed at its locked position so as to effectively cover the knife blade in order to protect personnel from being accidentally cut. Conversely, when the sealing tape application rollers are disposed at their operative positions, the knife blade guard locking mechanism is automatically unlocked so as to permit the knife blade to be uncovered in order to perform its sealing tape cutting operation.

Abstract: A liquid fuel supply and evaporator system for use in connection with combustion-powered fastener-driving tools comprises an evaporator housing which is disposed in thermal communication with the combustion chamber housing of the tool in order to absorb heat or thermal radiation generated within the tool combustion chamber. A sintered metal liquid fuel evaporator element is interposed between the evaporator housing and a liquid fuel distribution manifold whereby the liquid fuel is effectively converted into a gaseous fuel which is then transmitted by a gas distribution manifold toward the combustion chamber of the fastener-driving tool.

Abstract: A tape guide plate and finger plate assembly for the leading end portion of the carton or case sealing tape is provided in order to effectively prevent the leading end portion of the carton or case sealing tape from folding over upon itself whereby the adhesive material, disposed upon the front side surface portion of the sealing tape would effectively become stuck to itself and thereby foul further carton or case seal-ing operations. In addition, rollers are provided upon a finger plate so as to permit the sealing tape to be dispensed in a substantially frictionless or drag-free manner.

Abstract: A spring tension control system for the front and rear application roller arms, and for the sealing tape application rollers mounted thereon, of a tape cartridge assembly of a case sealing machine comprises a first spring-biasing mechanism to control the disposition and movement of the front and rear application roller arms upon which are respectively mounted the front and rear case sealing tape application rollers for applying the sealing tape to the vertically oriented front and rear surface portions of the case. In addition, there is also provided a second spring biasing mechanism which operatively cooperates with the first spring biasing mechanism so as to effectively impart an enhanced amount of tension and speed to the rear case sealing application roller in order to achieve enhanced case sealing processing speeds.