Abstract: An escalator step cleaner for cleaning escalator steps having a plurality of parallel tread ridges separated by tread grooves has a cleaning pad assembly configured to extend generally perpendicular to the direction of motion of the escalator steps and clean the escalator steps while the escalator is in motion. The cleaning pad assembly has a rigid upper plate and a flexible disposable bottom pad having a cleaning contact surface. The contact surface carries a plurality of spaced parallel pad ridges separated by pad grooves that matingly engage between the tread ridges of the escalator steps and cause dislodgement of the accumulated debris. The cleaning pad assembly can be secured on a hand-held cleaning tool or on a motorized cleaning tool with rotating brushes and a vacuum.

Abstract: A support assembly for supporting a retrofit roof to be installed above an existing roof made of preformed panels. Elongated support assembly members are positioned along the roof line to provide additional points of attachment for the new roof, while at the same time forming a substantially even plane for new roof panels. Some of the support members fit in the channels between the ridges of the preformed panels, which can be R-panels or standing seam panels. Transverse top members secure the channel-mounted members in place, while strapping members positioned atop the top members form additional lateral support for the new roof. A plurality of bracket support assemblies is secured between the top members to the roofing panels to elevate the new roof support. The bracket support assemblies are formed of two engageable parts to increase resistance to wind forces.

Abstract: An epicyclic gear assembly has a plurality of planetary gear sets secured in a carrier. Each planetary gear set has a planet gear supported by a planet shaft, the planet shaft having its opposite ends supported within the carrier, the planet shaft being capable of defecting along at least a part of its length when the gear assembly is subject to torsional and rotational loads.

Abstract: An epicyclic gear assembly has a central toothed sun gear unit mounted on a carrier plate and plurality of planetary gear sets surrounding the central gear in torque-transmitting relationship. Each of the planetary gear sets has a toothed planet gear supported by a planet shaft, the first end of which is cantilevered from the carrier plate. A second end of the planet shaft supports the planet gear. A double-tapered concave middle portion of the planet shaft allows flexing of the shaft so as to facilitate elastic deflection of the planet shaft while distributing load between the planet gear sets. The outer circumference of the middle portion has a pair of spaced outwardly convex protrusions formed between the first end and the second end.

Abstract: An ultrasonic inspection system useful for inspecting a tubular member provides for the use of ultrasonic transducer assembly for detecting weld flaws or other out-of range conditions in the tubular member. According to the invention, the tubular member is positioned horizontally on a rolling carriage and a predetermined amount of sound-conductive fluid is deposited into the tubular member. Wide rings secured to opposing open ends of the tubular member prevent the liquid from escaping, while forming a barrier for retaining a given level of liquid inside the tubular member. The transducers are submerged in the liquid and transmit/ receive sonic booms from reflected medium inside the tubular member. The transducers are connected to a computing control unit, which receives signals generated by the transducers and creates a report of any out-of range condition.

Abstract: An air-thrust marine vehicle has a hull with upwardly extending hull sides. An air-thrusting propulsion unit is configured for detachable mounting on the gunwales of various width hulls. The propulsion unit has a base assembly configured to move between a retracted position and plurality of expanded width positions for accommodating various width hulls, while being configured to hingedly engage the gunwales. The propulsion unit can be removed from the vehicle and positioned on another vehicle, such as a boat, an ice- or snow-traversing vehicle.

Abstract: A locking assembly for selectively locking a female electrical receptor with an electrical male plug connector is disclosed. The male plug has a plurality of prongs with apertures, and female receptor has prong-receiving contact members with openings that are aligned with the apertures when the plug is connected with the receptor. The locking assembly can have a pair of caps with conical projections that fit into the openings in the contact members and apertures of the prongs. A spring-loaded actuator button moves the caps in and out of engagement with the contact members and the prongs. Several embodiments of the locking assembly are disclosed.

Abstract: Attaching a three-dimensional ornamental article to a shoe upper is achieved using a stiff elongated strip that is bent to form an arcuate upper portion and a J-shaped lower portion. The upper portion is fitted to follow the contours of the top and sides of the ornamental article, while the lower portions are inserted through spaced openings formed in the shoe upper. The bottom ends of the lower portions face each other when they are positioned between the insole and outsole of the shoe. Once the outsole is secured with the insole, the ornamental article becomes securely attached to the shoe.

Abstract: An underwater trenching system is mountable on a side of a barge to be propelled by the barge along a waterway, the bed of which contains a trench with a laid pipeline. To remove the excess sediment from the trench the trenching unit delivers pressurized water and air to the trench. A sparge assembly with jet nozzles directs jets of water, breaking up the formation that has built up around the pipeline. The airlift assembly creates a turbulent flow to lift the disturbed sediment and remove it from the created trench.

Abstract: A support assembly for supporting a retrofit roof to be installed above an existing roof made of preformed panels. Elongated support assembly members are positioned along the roof line to provide additional points of attachment for the new roof, while at the same time forming a substantially even plane for new rood panels. Some of the support members fit in the channels between the ridges of the preformed panels, which can be R-panels or standing seam panels. Transverse top members secure the channel-mounted members in place, while strapping members positioned atop the top members form additional lateral support for the new roof.

Abstract: A knife has a cutting blade with an elongate planar body having a front and a back, a first and second opposite edges, the elongate body having a centerline extending between the first and the second edges, each of said first and second edges being provided with a plurality of angularly-oriented notches defined by beveled surfaces, which intersect to form cutting edges. The notches have a generally V-shaped configuration and have one or more sides that extend at an acute angle in relation to the centerline.

Abstract: A child restraint warning system configured to be secured to a child seat/carrier having a base, a seat detachably connected to the base, where the child seat/carrier includes a harness configured to be releasably secured with a latch. When the seat is secured on the base a seat position sensor sends a signal to a control unit positioned on the back of the seat. The control unit is switched into an active status for detecting an unlocked condition of the harness latch. A first series of audible warning signals is produced by the control unit if the latch remains unlocked for a pre-determined period of time. If the latch continues to be in an unlocked condition after the first series of warning signals the control unit generates a second series of signals, which can be spoken messages pre-programmed by the user.

Abstract: A land clearing device that is sized and configured to be attached to a small earth moving machine, such as a skid loader. The land clearing device has a pusher assembly with telescopically extendable actuator arms that are operated by a control unit accessible from the interior of the earthmoving machine. When the actuator arms are extended, the forward end of the pusher assembly applies lateral force on a trunk of a tree, pushing the tree until uprooted. The pusher assembly is supported by a pair of upright legs that rest on the ground and provide stability to the pusher assembly, which cantilevered from the upright legs. A Y-shaped grabber assembly has a front hook that partially encircles and holds the tree below the location of contact with the pusher assembly. A mounting assembly is secured to the pusher assembly and the grabber assembly by a common securing rod about which the pusher assembly and the grabber assembly can pivot.

Abstract: A collapsible foldable cooler can be converted to a stadium seat by folding back a top lid and folding diagonally down the top portions of the sidewalls. The folded down top lid extends along the back wall, forming a part of a converted stadium seat backrest, while the sidewalls form the sides of the stadium seat.

Abstract: A tongs for manually grasping items has two elongate tong arms pivotally joined together with a pair of magnet members. The arms pivot between an open position when the magnet members are joined together and a closed position when the magnet members are separated. A user can easily break the connection of the magnet members and separate the two arms, making it easier to store and clean the tongs.

Abstract: A waste receptacle cover is configured for placing above an open top waste container. The cover has a main body that received objects therein and a central opening for disposal of the waste into the waste container. A tubular guard surrounds the central opening and prevents the objects from dropping into the waste container, while allowing the user to dispose of the waste directly into the waste container.

Abstract: A system for teaching learners to write letters of an alphabet uses a plurality of template blocks, each having a cutout corresponding to a letter of the alphabet. A bottom wall of the cutout is covered with an abrasive material to facilitate tactile recognition of the letter shape by the learner. The kit has a plurality of insert members that make letter-forming components, such that one or more insert members fitted in the cutout form the corresponding letter of the alphabet.

Abstract: A high-powered diffraction limited diode pumped solid-state source optically end pumps a compact, widely tunable solid state material. Imaging of the collimated pump beam into the tunable medium produces ideal volumetric overlap producing high conversion efficiencies. Fully integrated pump source provides pump energy at or near the peak absorption wavelength. Birefringent elements placed intracavity are used for linewidth narrowing and tuning of the laser wavelength. Tunable active medium is placed in linear cavity arrangement utilizing a confocal or hemispherical arrangement. Mode waist is minimized in crystal such that there is optimal overlap with pump source while simultaneously maximizing extraction efficiency.

Abstract: A hand tool device is provided that stops the user from banging knuckles/hands into other nearby structures. The hand tool, for instance a wrench, includes a knuckle-protecting wrench handle, a wrench jaw, and a throat positioned between and integrated with the knuckle-protecting wrench handle and the wrench jaw. The wrench jaw may be a fixed open-ended jaw, an adjustable jaw, a Stillson type jaw, or a Crescent type jaw. The handle has two spaced-apart handle sections that define an opening therebetween. The user grips one of the handle sections during operation of the hand tool, while positioning one or both hands in the central opening. The second handle section protects the user's hands during use.