A frame structure of a perambulator, a child seat, an infant carrier or the like, includes a profiled frame element which along a profile direction of the frame element has a substantially constant cross-section, wherein the profiled frame element includes an at least predominantly closed cross-section, and wherein the profiled fame element has an inwardly projecting first protrusion which is configured to be brought into engagement with a fastening arrangement.

A tray assembly is provided. The assembly comprises a tray, at least one width reinforcement component affixed to the tray, and at least one length reinforcement component affixed to the at least one reinforcement component.

A shopping cart bumper in one embodiment comprises a U-shaped bumper having a plurality of slots on an inner leg of the bumper for engaging wires of a shopping cart.

A method of making a shopping cart includes forming a frame capable of supporting a plurality of basket assembly types, selecting from the plurality of basket assembly types a first basket assembly defining a first basket assembly type; and connecting the first basket assembly to the frame.

A mobile platform for an autonomous mobile robot comprises an external structural frame extending around the periphery of the platform. A wheel set comprises a plurality of wheel units each coupled to the frame. At least one wheel includes an in-hub electric motor. A central unit conforms to the internal form of the structural frame and has a substantially planar form. The central module includes a power source and a controller. A method of assembling a mobile platform for an autonomous mobile robot comprises the steps of: constructing a peripheral structural frame; providing a central unit configured to conform to the internal form of the structural frame, the central module comprising a power source and a controller; and mounting a wheel set to the frame the wheel set comprising a plurality of wheel units, each coupled to the frame and at least one wheel including an in-hub electric motor.

A body for a blow-molded waste cart and a waste cart having a blow-molded hollow body with four upstanding side walls and corner sections therebetween, a floor, and a circumferential compression flange around the side walls and corner sections is disclosed. The waste cart may also include an axle and wheels mounted to a side wall and a handle assembly with lid also mounted to a side wall. The circumferential compression flange may have a generally consistent width and thickness at each of the side walls and corner sections and the lid rim meets the circumferential compression flange when the lid is closed. A method of forming a blow-molded waste cart body is also disclosed. The process includes melting a polymer material to form a parison, enclosing the parison in a main mold, pressurizing the parison within the mold and moving a secondary mold section onto the main mold squeezing the polymer outward to a gap between the secondary mold and main mold to form the circumferential flange.

The present invention provides a top frame made from a thermoset foam material. The top frame includes a pair of substantially parallel sides and a pair of substantially parallel ends connected to the sides to form a generally rectangular frame structure. The frame structure has an inner layer and outer surface defining a thickness. The thermoset foam material varies in density along the frame structure thickness such that the density of the thermoset foam material is greatest near the frame structure outer surface to form a hard outer shell.

A frame for a utility cart, having a channel-shaped chassis with a load-bearing bed member forming an upper cover for the chassis. The chassis is preferably formed of a single sheet of metal, bent at primary bend lines to form side wall sections with a base section therebetween, and the side wall sections bent at secondary bend lines to form outwardly-extending lateral sections. The bed member is preferably bolted to the lateral sections to form a four-sided channel. Components for the transport assembly and steering assembly can be housed within this channel.

A shopping cart bumper in one embodiment comprises a U-shaped bumper having a plurality of slots on an inner leg of the bumper for engaging wires of a shopping cart.

A snow raft comprises a plurality of adjustable speed control studs to control the speed of the raft wherein adjustments are made by way of threading and unthreading the studs located within threaded sockets.