Abstract: The computer keyboard stand is a set of lightweight simple device attachable to the back ridge of the keyboard. The keyboard stand can hold the keyboard in an upright position when it is not in use. This invention provides another posture of the keyboard when it is not in use. By having the keyboard take this posture, the keyboard occupies less area on the desk. Also, the back of the keyboard can be used as a miniature billboard. The upright posture can also be used as a sign to indicating that the computer user is not in his/her office at the moment.

Abstract: Air traps 37a, 37b are disposed on one side adjacent at least one of suction and discharge ports of circulating pumps 14a, 14b forming a heat radiating or heat absorbing cycle. Also, the circulating pumps 14a, 14b are disposed at a level higher than heat-radiating and cooling heat exchangers 10, 20 and first and second heat exchanging portions 26a, 26b to recover air bubbles mixed therein so that the air bubbles circulated can be reduced to improve the heat efficiency.

Abstract: A can top end includes a disc-shaped panel having a disc-shaped flat section an outer periphery to be engaged with an upper end of a can body, and a stay-on type tab attached on the flat section of the panel. The disk-shaped flat section has a primary score to define a primary scored portion surrounded by the primary score and the flat section further includes a secondary score to define a secondary scored portion surrounded by the secondary score. The tab has a connecting portion rotatably connected to a center portion of the flat section around an axis perpendicular to the flat section and the tab has both a pull-up end and a push-down end. The primary scored portion is located below the push-down end of the tab to enable the primary scored portion to be opened by pulling up the pull-up end of the tab.

Abstract: A mold mounting apparatus having a mold holding apparatus provided on one side at the end of rails, for positioning and holding a mold; a second mold holding apparatus provided on the opposite side of clamping machines of an injection molding machine and the rails, for preheating, positioning and holding the mold in place; a mold delivery apparatus for delivering the mold to two clamping machines; and a mold carrying apparatus for receiving and delivering the mold among the mold holding apparatus, the second mold holding apparatus, and the mold delivery apparatus, and for conveying the mold along the rails. According to this mold mounting apparatus, the mold can be automatically carried into, and out of, all of the clamping machines after the mold has been brought into the mold holding apparatus, thereby improving mold changing operation efficiency and saving a space for the molding process.