Abstract: Maneuverable ergonomic trailer stands are disclosed. An example portable trailer stand includes: a frame having an upper ledge, a post, and a lower subframe, the lower subframe connected to the upper ledge via the post; an extendible leg coupled to the post independent of the lower subframe, the upper ledge being vertically movable based on movement of the extendible leg relative to the upper ledge, the post, and the lower subframe of the frame; and a wheel connected to the frame via the lower subframe such that the wheel is to move with the upper ledge as the upper ledge is vertically moved.

Abstract: Maneuverable ergonomic trailer stands are disclosed. An example portable trailer stand includes a frame having an upper ledge; an extendible leg coupled to the frame, the upper ledge being vertically movable to selectively engage and disengage an underside of a trailer parked on a driveway based on movement of the extendible leg relative to the frame; a wheel connected to the frame, the wheel to remain at a substantially fixed distance from the upper ledge as the upper ledge is vertically moved.

Abstract: Dynamically configurable traffic controllers and methods of using the same are disclosed. An example apparatus includes a first sensor to monitor traffic in a first area. The example apparatus further includes a second sensor to monitor traffic in a second area. The example apparatus also includes a projector to project light toward a floor when traffic is detected in both the first and second areas, the light to be visible from the first and second areas.

Abstract: A barrier system includes a handrail, and a connector to couple the handrail to a post extension that extends upward from a floor. The handrail has and end with a width measured in a direction transverse to an elongate length of the handrail. The connector includes a socket to hold the end of the handrail. The socket is defined by an elongate channel that extends in a direction substantially parallel to the post extension when the connector is attached to the post extension. The channel has a length that is greater than the width of the end of the handrail.

Abstract: A bollard system includes a post extension to extend upward from a floor, a first collar to encircle the post extension, a first connector to encircle the post extension adjacent to the first collar, and a first handrail to be connected to the first connector. The bollard system includes a second connector to encircle the post extension adjacent to the first connector, a second handrail to be connected to the second connector, and a second collar to encircle the post extension adjacent to the second connector. The first collar is invertible selectively to a first lock position and a first release position, the first connector having greater freedom to rotate relative to the first collar when the first collar is in the first release position than when the first collar is in the first lock position.

Abstract: Example portable trailer stands for supporting parked trailers are disclosed herein. Some example portable trailer stands disclosed herein comprise two telescopic posts supporting a generally horizontal beam. Some examples include spring-loaded retractable wheels for selectively installing and removing the trailer stand from underneath a trailer left parked on a driveway. After being positioned under the trailer, the posts extend to lift the beam solidly up against the underside of the trailer. To accommodate conditions where the driveway is not parallel to the trailer's underside, some example posts can be lengthened independently and have angular play that allows the beam to tilt. In some examples, the horizontal axle of the trailer stand wheels is perpendicular to the beam so that the trailer stand can be readily installed from either the front or side of the trailer. Some examples have a kingpin-receiving groove in the beam or have some other kingpin-receiving feature.

Abstract: Example axial fans (overhead fans) include a set of radially extending spokes that connect a set of fan blades to a motor-driven hub. Each spoke has at least one notch, so the spokes can be assembled in interlocking relationship with each other, such that the spokes extend at different rotational angles from the rotational axis of the hub but lie in substantially the same horizontal plane. Such an arrangement enables the spokes to support the cantilevered weight and other vertical loads exerted by the fan blades while providing a compact assembly. In some examples, a retainer extends through aligned bores of several components of the fan along the axis of rotation.

Abstract: Dynamically configurable traffic controllers and methods of using the same are disclosed. An example apparatus includes a first sensor to monitor traffic in a first area. The example apparatus further includes a second sensor to monitor traffic in a second area. The example apparatus also includes a projector to project light toward a floor when traffic is detected in both the first and second areas, the light to be visible from the first and second areas.

Abstract: Dynamically configurable traffic controllers and methods of using the same are disclosed. An example apparatus includes a first sensor to monitor traffic in a first area. The example apparatus further includes a second sensor to monitor traffic in a second area. The example apparatus also includes a projector to project light toward a floor when traffic is detected in both the first and second areas, the light to be visible from the first and second areas.

Abstract: Maneuverable ergonomic trailer stands are disclosed.

Abstract: Dynamically configurable traffic controllers and methods of using the same are disclosed. An example apparatus includes a first sensor to monitor traffic in a first area. The example apparatus further includes a second sensor to monitor traffic in a second area. The example apparatus also includes a projector to project light toward a floor when traffic is detected in both the first and second areas, the light to be visible from the first and second areas.

Abstract: Illuminating fans for loading docks are disclosed. An example illuminating fan includes a housing defining an airflow chamber and an electrical chamber divided by an internal wall of the housing. The illuminating fan also includes a fan wheel mounted for rotation within the airflow chamber. The fan wheel is driven by a fan motor to generate a current of air passing through the airflow chamber. The illuminating fan further includes a lamp supported by the housing. The lamp is wired to an electrical circuit at least partially contained within the electrical chamber.

Abstract: Dynamically configurable traffic controllers and methods of using the same are disclosed. An example apparatus includes a first sensor to face a first direction to detect oncoming traffic in a first area, a second sensor to face a second direction to detect oncoming traffic in a second area, and a first display to face the first area. The first display is to display a first signal in response to (1) the first sensor not detecting the oncoming traffic in the first area and (2) the second sensor detecting the oncoming traffic in the second area. The first display is to display a second signal in response to (1) the first sensor detecting the oncoming traffic in the first area and (2) the second sensor detecting the oncoming traffic in the second area. The first signal is different than the second signal.

Abstract: Illuminating fans for loading docks are disclosed. An example illuminating fan includes a housing defining an airflow chamber and an electrical chamber divided by an internal wall of the housing. The illuminating fan also includes a fan wheel mounted for rotation within the airflow chamber. The fan wheel is driven by a fan motor to generate a current of air passing through the airflow chamber. The illuminating fan further includes a lamp supported by the housing. The lamp is wired to an electrical circuit at least partially contained within the electrical chamber.

Abstract: Example portable trailer stands for supporting parked trailers are disclosed herein. Some example portable trailer stands disclosed herein comprise two telescopic posts supporting a generally horizontal beam. Some examples include spring-loaded retractable wheels for selectively installing and removing the trailer stand from underneath a trailer left parked on a driveway. After being positioned under the trailer, the posts extend to lift the beam solidly up against the underside of the trailer. To accommodate conditions where the driveway is not parallel to the trailer's underside, some example posts can be lengthened independently and have angular play that allows the beam to tilt. In some examples, the horizontal axle of the trailer stand wheels is perpendicular to the beam so that the trailer stand can be readily installed from either the front or side of the trailer. Some examples have a kingpin-receiving groove in the beam or have some other kingpin-receiving feature.

Abstract: Example portable trailer stands for supporting parked trailers are disclosed herein. Some example portable trailer stands disclosed herein comprise two telescopic posts supporting a generally horizontal beam. Some examples include spring-loaded retractable wheels for selectively installing and removing the trailer stand from underneath a trailer left parked on a driveway. After being positioned under the trailer, the posts extend to lift the beam solidly up against the underside of the trailer. To accommodate conditions where the driveway is not parallel to the trailer's underside, some example posts can be lengthened independently and have angular play that allows the beam to tilt. In some examples, the horizontal axle of the trailer stand wheels is perpendicular to the beam so that the trailer stand can be readily installed from either the front or side of the trailer. Some examples have a kingpin-receiving groove in the beam or have some other kingpin-receiving feature.

Abstract: Dynamically configurable traffic controllers and methods of using the same are disclosed. An example apparatus includes a first sensor to face a first direction to detect oncoming traffic in a first area, a second sensor to face a second direction to detect oncoming traffic in a second area, and a first display to face the first area. The first display is to display a first signal in response to (1) the first sensor not detecting the oncoming traffic in the first area and (2) the second sensor detecting the oncoming traffic in the second area. The first display is to display a second signal in response to (1) the first sensor detecting the oncoming traffic in the first area and (2) the second sensor detecting the oncoming traffic in the second area. The first signal is different than the second signal.

Abstract: Dynamically configurable traffic controllers and methods of using the same are disclosed. An example apparatus includes a first display facing a first direction; a second display facing a second direction; a third display facing a third direction; and a processor, in response to a first input being received indicative of traffic approaching the first display and no traffic approaching the second display and the third display, the processor to cause the second display and the third display to display a first signal and for the first display not to display the first signal or a second signal, the first signal providing a first warning level, the second signal providing a second warning level greater than the first warning level, the first signal illuminatable on the second display, the second signal illuminatable on the second display, the first signal, when illuminated, disposed within a perimeter of the second signal, when illuminated.

Abstract: A retractable bollard system for installation in a support surface that includes pavement includes a shell that when installed in the support surface extends below an upper surface of the pavement. The bollard system includes a post to be telescopically coupled to the shell. The post is axially movable relative to the shell selectively to an upper area and a lower area. The post extends farther above the shell when the post is in the upper area than when the post is in the lower area. The bollard system further includes a shock absorber to encircle the shell. The shock absorber is made of a polymeric material.

Abstract: An example bollard system includes a post extension to extend upward from a floor, and a first collar to encircle the post extension. The example bollard system includes a first connector to encircle the post extension adjacent to the first collar, and a first handrail to be connected to the first connector. The example bollard system includes a second connector to encircle the post extension adjacent to the first connector, and a second handrail to be connected to the second connector. The example bollard system includes a second collar to encircle the post extension adjacent to the second connector. The first collar is invertible selectively to a first lock position and a first release position, the first connector having greater freedom to rotate relative to the first collar when the first collar is in the first release position than when the first collar is in the first lock position.