The construction industry ranks among the largest and most dangerous industries in the world. To promote worker safety, government regulations require use of fall protection equipment, such as railings, many of which are expensive, wasteful, and/or time consuming to use. Accordingly, the present inventor devised some alternatives. One exemplary system incorporates a dual post base plate configured for attachment to a concrete floor via a single concrete anchor bolt, instead of the multiple bolts used conventionally, thereby reducing assembly time and cost. Another embodiment includes a rolling cart assembly which stores the rails in a side-by-side vertical arrangement and the base plates in an interleaved sequence, promoting easy access during installation and inventory control during disassembly and storage. Additionally, some embodiments include four stacking posts that extend upward from the cart, enabling multiple carts to be stacked vertical on atop the other to save space on construction sites.

A reconfigurable pallet/dolly platform includes a top deck that includes a product support surface and an opposing underside. The underside includes pallet support leg attachment areas for receiving pallet support legs when configured as a pallet, and dolly wheel attachment areas for receiving dolly wheels when configured as a dolly. The product support surface includes pallet support leg receiving areas aligned with the pallet support leg attachment areas and configured to engage the pallet support legs from an identical platform stacked thereon when configured as a pallet. The product support surface also includes dolly wheel receiving areas aligned with the dolly wheel wells and configured to engage the dolly wheels from an identical platform stacked thereon when configured as a dolly. Each dolly wheel receiving area partially overlaps with one of the pallet support leg receiving areas.

Examples provides one or more rolling pallet trays capable of interlocking together to form a modular rolling platform. A rolling pallet tray includes a rectangular base member with a top surface, a bottom surface, and a set of four sides. The top surface may have a lip extending upward along at least a portion of the circumference of the top surface. A set of rollers are pivotally mounted to the bottom surface. A floor-lock brake may be activated to stop movement of at least one roller to lock the rolling pallet tray in place. A set of linking mechanisms is attached to one or more of the sides for linking the individual rolling pallet tray to one or more other rolling pallet trays in a variety of different configurations. The linked rolling pallet trays in the modular rolling pallet tray pivot together as a single unit for greater stability.

An apparatus including a platform, casters attached to the platform, and a carriage supported by the platform is described. The carriage includes a left arm, a right arm, and an actuation mechanism. The left arm can pivot about a left lateral axis, and the right arm can pivot about a right lateral axis. The actuation mechanism allows a distance between a proximal end of the left arm and a proximal end of the right arm to be modified. Increasing the distance causes a distal end of the left arm and a distal end of the right arm to swing towards each other. Decreasing the distance causes the distal end of the left arm and the distal end of the right are to swing away from each other. The apparatus provides a convenient means by which to move a helicopter equipped with skids while the helicopter is on the ground.

A dolly includes a deck having a support area. A plurality of wheels support the deck. A peripheral lip projects upward relative to the support area of the deck and extends at least partially about a periphery of the deck. The peripheral lip includes a ramped portion. A stack of bakery trays can be tipped and slid onto the dolly over the ramped portion of the peripheral lip.

A cart transports items between a controlled environment (e.g., a clean room or an airlock to a clean room) and an uncontrolled environment. The cart has a main body that carries the items, and a removable and interchangeable wheel base assembly. A first wheel base assembly is located in the uncontrolled environment and a second wheel base assembly is located in the controlled environment. The user can push the cart (with the first wheel base assembly) up to the second wheel base assembly at the boundary between the controlled environment and the uncontrolled environment. The user then unlocks the main body from the first wheel base assembly, slides the main body onto the second wheel base assembly, and locks the main body to the second wheel base assembly. An autoclavable storage and transport cart can hold several wheel base assemblies.

A platform including a top deck is configured to receive a pallet when stacked thereon. The top deck includes at least one integrally formed recessed support configured to receive a pallet support of the pallet. The at least one recessed support includes a perimeter recessed in the top deck and which defines a cavity configured to receive the pallet support.

A dolly is disclosed that includes a caster/jaw support member, an upper jaw assembly, a lower jaw assembly, and casters. The upper jaw assembly includes a jaw slidably mounted to the caster/jaw support member and a selectively engageable threading structure with a partially-threaded hole, wherein the threading structure extends from the upper jaw assembly to the lower jaw assembly. The lower jaw assembly includes a lower jaw carriage slidably mounted to the caster/jaw support member, and the selectively engageable threading structure is disposed in the lower jaw carriage. A threaded shaft connected to an adjustment knob can be engaged and disengaged by the selectively engageable threading structure. A set of casters is connected to and extends away from the caster/jaw support member. Multiple dollies can be connected together by a crossmember to form a larger cart.

A chair caddie, comprises a central hub and four arms. Each of the four arms is coupled to and extends outwardly from the central hub and is adapted to support a chair leg. Each arm is supported by a surface-engaging roller. The surface-engaging rollers cooperate to elevate the arms and the central hub above a planar surface engaged by the surface-engaging rollers. Each arm carries a chair foot receptacle adapted to receive and support a chair foot, and each roller is positioned inboard of the chair foot receptacle on its respective arm. The chair foot receptacles define a notional chair footprint circumscribing the chair foot receptacles, and the surface-engaging rollers have centers of rotation that are inside the chair footprint.

A reconfigurable pallet/dolly platform includes a top deck that includes a product support surface and an opposing underside. The underside includes pallet support leg attachment areas for receiving pallet support legs when configured as a pallet, and dolly wheel attachment areas for receiving dolly wheels when configured as a dolly. The product support surface includes pallet support leg receiving areas aligned with the pallet support leg attachment areas and configured to engage the pallet support legs from an identical platform stacked thereon when configured as a pallet. The product support surface also includes dolly wheel receiving areas aligned with the dolly wheel wells and configured to engage the dolly wheels from an identical platform stacked thereon when configured as a dolly.