Abstract: Various embodiments that pertain to cooling of a laser set are described. In one example, the lasers can be a set of laser diodes. A laser diode cooling system can create a vacuum environment that causes a coolant to be below atmospheric pressure. The coolant can be water supplied by an exchangeable tank. When the tank is empty, the tank can be replaced with a new tank.

Abstract: A multifunctional folding chair and wheeled cart system and kit includes a multifunctional folding chair that easily convert into a fully unfolded configuration of a flat bed, a partially folded configuration of a reclining lounger, an upright lounger, a short beach chair, and a regular chair, and a fully folded configuration. The system also includes at least one multifunctional wheeled chair that includes, in addition to the configurations of the multifunctional folding chairs, a partially folded configuration of a wheeled cart. The multifunctional wheeled chair, in the wheeled cart configuration, is configured to hold and transport the plurality of multifunctional folding chairs in the folded configuration.

Abstract: A multifunctional chair apparatus that may be configured into the following separately definable and useful structures: (1) a flat-bed assembly; (2) a reclining lounger assembly; (3) a beach chair assembly having a first seat height; (4) a beach chair assembly having a second seat height; (5) a cart assembly; and (6) a compact folded assembly. The multifunctional chair apparatus may include a frame having a primary frame assembly and a secondary frame assembly being foldably connected by a central hinge assembly at a central portion of the frame. The primary frame assembly may be comprised of two or more smaller frames separated and rotatably connected by a primary hinge assembly. The secondary frame assembly may be comprised of two or more smaller frames separated and rotatably connected by a secondary hinge assembly. The hinge assemblies include lockable hinges that selectively lock at angles of 0°, 100°, 140°, and 180°.

Abstract: A wheeled device that converts between a multi-mode beach chair and a standard vertical dolly. It can also be used as a flat 2-wheeled wagon. A rigid frame includes at least two parts coupled by hinges, a first part (long part) that can fold to different lengths, and a second part (short part). There is a swiveling top handle on the end of the long part, and a swiveling bottom handle on the end of the short part. In a long chair mode, the long part is fully extended; in the short chair mode, it is folded and In the dolly mode, the short part forms the bottom of the dolly.

Abstract: A multifunctional chair apparatus that may be configured into the following separately definable and useful structures: (1) a flat-bed assembly; (2) a reclining lounger assembly; (3) a beach chair assembly having a first seat height; (4) a beach chair assembly having a second seat height; (5) a cart assembly; and (6) a compact folded assembly. The multifunctional chair apparatus may include a frame having a primary frame assembly and a secondary frame assembly being foldably connected by a central hinge assembly at a central portion of the frame. The primary frame assembly may be comprised of two or more smaller frames separated and rotatably connected by a primary hinge assembly. The secondary frame assembly may be comprised of two or more smaller frames separated and rotatably connected by a secondary hinge assembly. The hinge assemblies include lockable hinges that selectively lock at angles of 0°, 100°, 140°, and 180°.

Abstract: A multifunctional folding chair and wheeled cart system and kit includes a multifunctional folding chair that easily convert into a fully unfolded configuration of a flat bed, a partially folded configuration of a reclining lounger, an upright lounger, a short beach chair, and a regular chair, and a fully folded configuration. The system also includes at least one multifunctional wheeled chair that includes, in addition to the configurations of the multifunctional folding chairs, a partially folded configuration of a wheeled cart. The multifunctional wheeled chair, in the wheeled cart configuration, is configured to hold and transport the plurality of multifunctional folding chairs in the folded configuration.