Disclosed are methods and apparatus for providing portable or fixed solar array support systems. Embodiments of the invention include an apparatus that holds four 60-cell rooftop-grade solar panels and folds up into a relatively small portable device that easily fits in a garage or shed. When open, the panels are displayed at near the nominal angle to the sun for the region. Adjustable angle supports are available in alternative embodiments.

An embodiment of a cart for food service has a folding frame and/or removable shelves. Optionally, the frame includes sidewalls pivotally attached to opposite sides of a back. An optional wheeled base may be pivotally attached to a bottom of the back. In some embodiments, removable shelves are supported by the side walls, for example, sliding between walls on parallel tracks. Optionally the number of shelve can be changed in accordance to the depth and/or number of dishes carried. The cart has stable, locked, unfolded configuration on four wheels and approximately the width of a man. The frame optionally folds into a flat shape that is supported on two wheels and/or the shelve are held to the frame, for example in a pocket. Optionally the shelves and/or walls are made of aluminum and/or the wheels and/or base are made of stainless steel.

Systems and methods are disclosed for foldable containers for manual and robotic use. In one embodiment, an example foldable container may include a first container wall, a second container wall configured to rotate outwards in a first direction with respect to the first container wall, and a bottom container platform configured to rotate outwards in a second direction with respect to the first container wall. The bottom container platform may include an automatic locking mechanism configured to engage with the second container wall when the foldable container is in an unfolded position, where the second direction is perpendicular to the first direction. Some embodiments may include a number of wheels. The foldable container may be configured to be transported using (i) the plurality of wheels via manual pushing, and (ii) robotic manipulation to lift and move the foldable container.

An accessory attachment mechanism for a wagon is provided. The mechanism has a mounting bracket, a pivot arm, and a retention mechanism. The mounting bracket is connected to the wagon and has a first opening, a second opening, and a pivot member. The pivot arm is pivotally connected to the mounting bracket at the pivot member and pivots about a plane generally parallel to a base of the wagon between a storage position and a use position. A pin extends through the pivot arm into separate openings in the mounting bracket to retain the pivot arm in the storage and use positions. The retention mechanism is provided at an end of the pivot arm and has a moveable clamp member adapted to secure an accessory thereto.

An embodiment of a cart for food service has a folding frame and/or removable shelves. Optionally, the frame includes sidewalls pivotally attached to opposite sides of a back. An optional wheeled base may be pivotally attached to a bottom of the back. In some embodiments, removable shelves are supported by the side walls, for example, sliding between walls on parallel tracks. Optionally the number of shelve can be changed in accordance to the depth and/or number of dishes carried. The cart has stable, locked, unfolded configuration on four wheels and approximately the width of a man. The frame optionally folds into a flat shape that is supported on two wheels and/or the shelve are held to the frame, for example in a pocket. Optionally the shelves and/or walls are made of aluminum and/or the wheels and/or base are made of stainless steel.

The present invention provides a cabinet (2) intended for transporting and distributing meal trays in aircraft, for example to provide a trolley (1) which can be reinforced with a frame (3). The cabinet is made of a fireproof, water-repellent, alveolate cardboard material, the cabinet comprising an upper face, a lower face, two side faces, a rear face, a front face forming a door, which are made of a single piece of cardboard. The invention also provides for the use of a flat sheet of cardboard, pre-cut in a structured manner, to form a cabinet in a single piece when folded and assembled, preferably of parallelepipedal shape, the sheet of cardboard having a thickness of 6 mm to 10 mm, and a method of manufacturing a cabinet comprising the provision of such a sheet of cardboard, to form a cabinet.

A cart has a folded configuration and a deployed configuration. The cart includes two side frames arranged opposite to each other; and a plurality of support members connected between the two side frames. Each side frame includes a vertical synchronization rod with a front foot assembly and a rear foot assembly arranged on two sides of the vertical synchronization rod. The front foot assembly includes a front foot rod with an upper front oscillating rod and a lower front oscillating rod hinged between the vertical synchronization rod and the front foot rod. A bottom of the front foot rod is hinged to a front wheel. The rear foot assembly includes a rear foot rod with an upper rear oscillating rod and a lower rear oscillating rod hinged between the vertical synchronization rod and the rear foot rod. A bottom of the rear foot rod is hinged to a rear wheel.

A folding utility cart accessory device includes a frame having a pair of vertical supports and an upper horizontal member extending between an upper end of each vertical support. A pair of support arms are attached to the frame. A first pair of fasteners are attached to a lower horizontal member that extends between each vertical support. A second pair of fasteners are attached to a lower end of each vertical support. The first pair of fasteners are configured to removably secure to an upper horizontal member of a folding utility cart frame. The second pair of fasteners are configured to removably secure to a vertical member of a folding utility cart frame. In this way, the frame can be removably secured to either the front end or rear end of a folding utility cart to provide additional storage options.

A hamper has a base having a base frame with a base shelf provided inside the base frame, and a plurality of caster assemblies secured to the base frame. A supporting frame assembly has two U-shaped frames, with each U-shaped frame having a horizontal base bar and two vertical bars extending from opposite ends of the base bar, with the two U-shaped frames coupled to each other at the center of each base bar, and with the base bars secured to the base. A fabric body has a plurality of side walls, and four vertical corner sleeve pockets, with each vertical corner sleeve pocket defining a channel that receives a separate vertical bar. A top frame secured to the upper ends of the vertical bars.

Disclosed are hinges having specially-cut sections of steel angle iron that force a solid stop point in the open or closed positions. In some embodiments, the stops may limit the hinges to open no more than 90 degrees. In other embodiments the stops may limit the hinges to open no more than 180 degrees. The hinges provide stability to any structure they are used with.