Abstract: A rotor includes a shorting ring defining a plurality of cavities therein, and a plurality of conductor bars each integral with the shorting ring and having an end disposed within a respective one of the plurality of cavities. The shorting ring and each of the conductor bars are formed from an aluminum alloy including a lanthanoid present in an amount of from about 0.1 part by weight to about 0.5 parts by weight based on 100 parts by weight of the aluminum alloy. An aluminum alloy, and a method of forming a rotor are also disclosed.

Abstract: A rotor includes a shorting ring defining a plurality of cavities therein, and a plurality of conductor bars each integral with the shorting ring and having an end disposed within a respective one of the plurality of cavities. The shorting ring and each of the conductor bars are formed from an aluminum alloy including a lanthanoid present in an amount of from about 0.1 part by weight to about 0.5 parts by weight based on 100 parts by weight of the aluminum alloy. An aluminum alloy, and a method of forming a rotor are also disclosed.

Abstract: An apparatus that provides a system and method for hygienically housing patron pagers while the patron waits for service. The apparatus includes a hub that secures a volume of sleeves. The hub can be secured to any surface with an adhesive strip. A pager is placed inside of one of the volume of sleeves and the sleeve is then removed from the hub through a perforation. Once removed, the top of the sleeve is adhesively secured around the pager. The sleeve contains various locations for the placement thereon of advertising and marketing media. Once the wait is over, the pager is removed through the bottom of the sleeve, which is removed at a perforation and discarded. The patron then keeps the sleeve which contains the marketing and advertising media for future use.

Abstract: A protective cover for pagers of the type used in by establishments wherein those to be served must wait and be notified when their wait is over. The cover is designed to protect the waiting party from bacteria, viruses, germs and the like that may be transferred from waiting party to waiting party as the pager is reused by the establishment. One embodiment is a simple envelope-type sleeve for the pager while a second embodiment is a flat, foldable and sealable cover that quickly wraps around the pager. Optionally, the protective sleeve may be further fortified with anti-bacterial or other hygienic agents.

Abstract: An improved valve system for creating reverse pulses of air through the filter element of a vacuum cleaner in order to shake and drive collected dust from the filter element during operation of the vacuum cleaner, by equipping the vacuum cleaner with a valved conduit downstream from the filter element and upstream from the inlet (vacuum side) of the exhauster wherein the valve consists of a pair of movable rigid sealing surfaces adapted to rotate about a single axis positioned such that one rigid surface opens outwardly towards the exterior of the conduit against the pressure gradient while the other rigid surface opens inwardly towards the interior of the conduit assisted by the pressure gradient.