Abstract: A variable reduction cross-linkage for a rear suspension bicycle includes a four-bar linkage comprised of a portion of the frame between a first pivot point and a second pivot point, a portion of the rear swing arm, a long link and a short link. The swing arm is pivotable relative to the frame about the first pivot point. The long link is pivotable relative to the frame about the second pivot point. A shock absorber is pivotally attached to the frame and long link. The four-bar linkage operates so that upward pivotal movement of the swing arm results in a forward movement of the long link to thereby compress the shock absorber.

Abstract: A power buggy is configured to be safe, stable, easy to control, and comfortable. Frequently-used controls such as dump controls, a speed control, and a directional control, are located at or very near handgrips of the operator's handle so as to permit the operator to control the vehicle without releasing either of the handgrips. For instance, speed and direction are both controlled by a bidirectional twist grip forming one of the handgrips. The twist grip must rotate through a neutral position before changing directional control from forward to reverse so that an operator cannot reverse the vehicle's direction of travel without first rather gradually reducing vehicle speed. Operator comfort is also enhanced by a fuel tank that shields the operator from the engine. The fuel tank also has a large capacity while simultaneously functioning as a support for side shrouds of the vehicle.

Abstract: A device for receiving formwork elements used to manufacture concrete elements has a bearing static structure and a flat formwork joined therewith which can be driven to vibrate by an exciting device in order to compact the still-plastic concrete. The sound-insulating joining devices are inserted between the formwork shell and the static structure. The exciting device bypasses the joining device and acts directly or indirectly on the formwork shell.

Abstract: A bicycle saddle for seating a bicycle rider includes a shell, foam padding, leather cover, a suspension rail, and a seating surface including right and left sides, divided by a substantially V-shaped open surface extending from a rear edge of the saddle forwardly, and a longitudinal depression extending from the apex of the V-shaped open space forwardly to the anterior portion of the saddle. The right and left sides of the saddle thereby provide laterally spaced apart left and right posterior support surfaces for supporting the right and left ischeal tuberosities of the bicycle rider, respectively.

Abstract: An electro-mechanical reversing contactor is disclosed in which a single common base is molded to receive two contactor powerheads. The common base has a bottom surface and upwardly extending sides, with an upwardly extending center divider, thereby forming two powerhead sockets. Each powerhead socket is capable of receiving a powerhead therein. The common base also has a circuit board pocket to receive a single circuit board to control both contactor powerheads. The center divider has an upwardly extending interlock tower to receive an interlock pawl that is engageable with each of the contactor powerheads. The interlock mechanism mechanically prevents both contactors from being energized at the same time. The common base for two powerheads saves labor and material costs in assembling and installing a reversing contactor.

Abstract: A screen media (200) for use in screening pulp slurry has a first side (204) and a second side (206). The pulp slurry is fed from the first side of the screen media to the second side of said screen media through a plurality of screening passages (205). Each said screening passage include a contour cut (210) formed in the first side, a back groove (208) formed in the second side, and a residual thickness (234) between the contour cut and the back groove. An elongate slot (235) is formed in the residual material, and the residual thickness has a substantially uniform thickness about the elongate slot. Where the slot extends completely through the residual material it defines a through-slit (236) through which slurry flows and is filtered.

Abstract: A brake disk has an inner annular portion or hub area and an outer annular portion or rub area that are interconnected by a number of spaced arms extending radially and circumferentially between the inner and outer annular portions. The arms can be formed (e.g. stamped) in a number of configurations, whereby the stress on the disk caused by the heat generated in the outer annular portion during braking is relieved by arm deflection, thus preventing warping of the disk. The arms are also configured to distribute stress relatively evenly throughout the arms during expansion and contraction of the outer annular portion, thereby preventing cracks and fractures.

Abstract: A switching filter is disclosed for discriminating false control signals from actual control signals. The switching filter is particularly useful on a high impedance input, such as that of a motor controller. The filter is designed to compensate for capacitive, inductive, and/or resistive coupling between extended control lines that are run in parallel with other power lines. A low impedance is switched into the otherwise high impedance control line input for a brief instant to dissipate and phase shift false control signals to prevent the controller from interpreting the false signals as actual control signals. The filter includes a first resistor connectable to sense a presence of a possible false control signal, and a second resistor, having much lower resistance than the first resistor, connected in a path between the control line input and circuit common.

Abstract: In a hand-held electric tool driven by an electric motor (2) and capable of being connected to a single-phase alternating current (4a), the electric motor (2) has no collector or slip ring, and its driving energy is supplied by control electronics (5) which are powered at their input by the single-phase alternating current (4a) and which supply at their output the type of current (4b) suitable for the motor. The control electronics (5) are arranged in a handle (1a) of the electric tool and are cooled by the cooling air flow (7) which also cools the motor (2).

Abstract: A motor starter temperature protection control in which an ambient temperature sensor is positioned on an inside cover of the motor starter to sense ambient temperature across the power poles and heat sinks and provide an ambient temperature signal indicative of the ambient temperature in the motor starter enclosure. A power pole temperature sensor is positioned in thermal communication with each power pole and produce pole temperature signals indicative of the temperature of each power pole. A microprocessor is connected to each of the temperature sensors and receives the ambient temperature and the pole temperature signals to control the motor starter operation based on the temperature inputs. The microprocessor is programmed to periodically monitor the ambient and power pole temperature signals and compare these signals against a fan-on limit, and if the signals exceed the fan-on limit, the control turns on the internal fans of the motor starter.

Abstract: A double action pneumatic spring percussion mechanism has an air supply mechanism. A percussion piston is movable with a driving piston. In an air-supply position, ambient air is supplied through an air inlet to a front pneumatic spring. When the percussion piston and driving piston are moved accordingly relative to each other, a loading hole is opened, through which air under increased pressure can flow out of the front pneumatic spring into a rear pneumatic spring, ensuring an increase of pressure in the rear pneumatic spring. The air pressure increase in both pneumatic springs makes it possible to use the pneumatic spring percussion mechanism even in conditions of operation with a low ambient air pressure.

Abstract: A magnetic flux concentrator shield is disclosed for use with magnetic flux sensors in an overload relay for multiple pole electromagnetic contactor applications. The magnetic flux concentrating shield has slotted layers of laminated members. The layers have a series of pole shielding slots which concentrate magnetic flux generated by conductors carrying current through conductor apertures in each layer. Magnetic flux sensors are positioned within air gaps within each pole of the shield. By shielding the generated magnetic flux from reaching the magnetic flux sensor of another pole, the pole shielding slots minimize cross pole magnetic flux sensor interference.

Abstract: A method of forming fabric for making foam-in-place molded articles such as preferably seat cushions. A film is secured to a frame and tacked by adhesive to a piece of fabric, not secured to the frame, that forms the outer covering of the seat cushion for permitting the fabric to move relative to the film during forming to enable fabrics which cannot stretch a considerable amount to be used. To form the fabric, the film and fabric are placed in a female mold and the film and fabric are drawn into a cavity of the mold and against a contoured surface in the cavity forming a recess in the film and fabric. To counteract compressive stresses in the fabric during forming, the frame can have one or more fabric tensioners that selectively apply tension to the fabric during forming. To mold the cushion, a foam is poured into the recess and allowed to cure until it hardens into a foam core and bonds with the film.

Abstract: A masonry weep hole insert for placement into a weep hole in a masonry wall, the weep hole being defined by a space without mortar between two adjacent bricks on a lower level of bricks for draining moisture and venting air from an airspace behind said masonry wall. The insert is so dimensioned so that a portion of the insert substantially fills the space between the two adjacent bricks which form the weep hole, and so that another portion extends rearwardly and upwardly above the weep hole into the airspace behind the bricks. In one embodiment, the insert, made from a porous material which is permeable to air and water but not mortar, is designed so that at least a portion of the porous material remains exposed to the airspace behind the brick veneer even in the event that mortar or other debris happens to fall into the airspace. The porous material thereby provides a passageway for draining moisture and venting air which will not become inadvertently blocked by excess mortar or debris.

Abstract: A composite bicycle frame having at least a portion of the frame walls reinforced with an internal layer of honeycomb material is presented. The honeycomb material is essentially sandwiched between interior and exterior sections of the frame wall, with the interior and exterior sections of the frame wall each being comprised of a plurality of overlaid layers composite material. Each layer of composite material is comprised of a multiplicity of high strength, unidirectional carbon fibers embedded in an epoxy resin. Several layers of composite material are stacked on top of each other and arranged so that the fibers in one layer cross over the fibers in an adjacent layers. The layers are cut into shapes and molded together using a cavity mold and internal pressure bladder in order to construct a substantially hollow, unitary frame member.