A vacuum box comprises a lower box; an upper cover; an isolating layer; a pump unit; a motor; a battery; a control button. The isolating layer is installed with a pressure display unit. The pressure display unit is formed by a pressure button installed in a pressure hole of the isolating layer by an airtight ring, and a spring below the pressure button. A sealed airbag installed at a top cover of the pressure button and a periphery of the spring; and a display mask connected to the pressure button. The display mask is pivotally installed to ears of the isolating layer; a top of the display mask is mounted with at least two color indicators. The pressure button is installed with a sensing switch which sense the rising or descending of the pressure button.

A bubble forming mechanism has a bottle for holding therein a bubble forming solution. The bottle has a concave top surface with a slot formed in the surface. The bottle also includes a guide carried by a portion of the bottle. The mechanism has a wand with a loop carried on a lower end of the wand wherein the wand and loop are capable of being received in the slot and into the bottle. The guide aligns the wand and the loop with the slot.

The lid consists of two unitary parts both of which are molded from a soft rubbery substance. The body of the lid butts against the mouth of a container and includes a vacuum release valve and a check valve through which air may be evacuated from the container. The second part is a bellows pump that sealingly engages the body of the lid. As the bellows pump is worked manually, air is drawn from the container into the pump through the check valve on the body of the lid and the air is then discharged into the atmosphere through a second check valve that is an integral portion of the removable bellows pump. Because of its simplicity and lack of small parts, the lid is easy to clean effectively, and reuse is contemplated. The actuators for the pump and for the vacuum release valve extend to the periphery of the lid thereby making it easy for use by handicapped persons.

A container assembly includes a cover cap mounted detachably and sealingly on a container. The cover cap has a pump-mounting wall portion defining a pump-receiving chamber, an inlet formed in the pump-mounting wall portion and in fluid communication with the pump-receiving chamber and a storing space of the container, and a valve-mounting wall portion defining an opening which is in fluid communication with the storing space and the atmosphere. A pump member is disposed movably and sealingly in the pump-receiving chamber, and has an outlet in fluid communication with the pump-receiving chamber and the atmosphere. An urging member urges the pump member away from the inlet. First and second check valves are respectively mounted on the cover cap and the pump member for closing the inlet and the outlet of the pump-receiving chamber, respectively. An air-inlet valve is mounted on the pump member for closing the opening in the cover cap, and is operable to uncover the opening in the cover cap.

A machine includes a body, a hollow cylinder fixedly attached to the body, a piston assembly slidable within the hollow cylinder, and a lever handle pivotally attached to the body. The hollow cylinder has a sealing end, and the sealing end is capable of engaging with and sealing to a stopper. The piston assembly includes a cross wall at a first end. The lever handle is coupled to the piston assembly so as to be capable of sliding the piston assembly in the hollow cylinder.