摘要:
A vacuum cleaner includes a cyclonic airflow chamber that facilitates the separation of contaminants from a suction airstream. The airflow chamber includes a chamber inlet and a chamber outlet, with the chamber inlet being fluidically connected with at least one of a suction nozzle and an above-the-floor cleaning tool. An exhaust filter housing includes a suction duct and an exhaust plenum, with the suction duct communicating with the chamber outlet. A suction source housing includes an open end communicating with the exhaust plenum and a closed end. A suction source is positioned within the suction source housing to define an annular exhaust flow passageway surrounding the suction source from the housing closed end to the housing open end. The suction source includes a suction inlet communicating with the suction duct and an exhaust outlet communicating with the housing closed end.
摘要:
A beverage dispensing assembly that is capable of dispensing controlled or metered portions of a beverage charged with a gas fits onto a shelf in a conventional household refrigerator. The beverage dispensing assembly includes a sealed disposable container assembly that contains the beverage and a dispensing assembly that cooperates with the container assembly to selectively unseal the container assembly and dispense controlled portions of the beverage from the container assembly.
摘要:
A book with a USB connection is provided. The book also has a memory and optionally a processor. One or more documents are stored in the memory. When the book is connected to a personal computer, the documents can be displayed on the personal computer. The documents can be modified and stored on the memory in the book for later use by the book's owner. A server can also be connected to the personal computer and the progress of a plurality of students with books can be monitored. Educational systems and methods are also disclosed.
摘要:
There is provided a system for dispensing a plurality of perforated wipes having a perforation detach strength characteristic. The system includes a dispenser having a dispensing force characteristic and including a sealable chamber. The chamber is configured to retain the plurality of perforated wipes therein. A dispensing opening is in communication with the chamber. The opening is adapted to dispense wipes from the plurality of perforated wipes through the opening and out of the dispenser. A wiper blade is positioned in the dispenser to engage at least a portion of the wipes as the wipes dispense through the opening. When dispensing, a ratio of the perforation detach strength characteristic to the dispensing force characteristic is greater than 1:1.
摘要:
A connecting element for creating a blind side connection for materials such as furniture. Connecting element includes a tenon which includes a groove positioned about the peripheral surface of the tenon. A compression material which is flexible and has excellent memory is inserted into the group on the tenon. A mortise is provided which has an opening for telescopically receiving the tenon and compression material into the inner chamber of the mortise. The inner chamber includes a set slot positioned around the interior surface of the chamber and is designed to receive the peripheral edge of the compression material on the tenon. Liquid and/or re-wettable adhesives can be used to rigidly connect the tenon in the mortise.
摘要:
A rotatable platform having a relatively circular turntable top rotationally supported above a unitary base by a plurality of wheels which make tangential point contact with the underside of the turntable top. The base includes a raised rim portion that carries the rotationally mounted wheels. A step is formed between the raised rim portion and the remainder of the base that helps prevent food particles from contacting a gear train assembly contained within the base. A flat spiral spring is housed beneath the gear train assembly and cooperates with the gear train assembly to rotate the turntable top. A detent is provided on the base that engages an escapement blade for stopping rotation of the turntable top. The base is substantially square with rounded corners.