초록 ▼

A hose-to-wall fitting for attachment to one end of a current-carrying flexible hose to enable such hose to be connected through a wall-mounted current-carrying inlet valve to both (1) a source of vacuum and (2) dual sources of electrical power, e.g., a high-voltage source for powering a motor or th

A hose-to-wall fitting for attachment to one end of a current-carrying flexible hose to enable such hose to be connected through a wall-mounted current-carrying inlet valve to both (1) a source of vacuum and (2) dual sources of electrical power, e.g., a high-voltage source for powering a motor or the like, and a low-voltage source for powering a control circuit or the like through a switch built into the handle/wand fitting attached to the other end of the hose. The high-voltage male contacts of the hose-to-wall fitting can be reversed to enable use with the types of inlet valves which incorporate only the connections to the source of vacuum and to the low voltage source, or only the connection to the source of vacuum, the high-voltage connection being made in either case through a short electrical cord to a conventional electrical outlet.

대표청구항 ▼

A universal hose-to-wall fitting for a current-carrying flexible hose, comprising: (a) a generally cylindrical portion for mechanical attachment to one end of a current-carrying flexible hose; and (b) a male end fitting including a first pair of electrical contacts for connection to high-voltage cur

A universal hose-to-wall fitting for a current-carrying flexible hose, comprising: (a) a generally cylindrical portion for mechanical attachment to one end of a current-carrying flexible hose; and (b) a male end fitting including a first pair of electrical contacts for connection to high-voltage current-carrying elements of a current-carrying flexible hose, and means for rigidly and detachably affixing said male end fitting to said cylindrical portion for orientation of said first pair of electrical contacts: (i) either toward the wall end of said hose-to-wall fitting so that said first pair of electrical contacts will engage a corresponding pair of high-voltage contacts in a wall fitting virtually simultaneously with the engagement of said cylindrical portion with a source of vacuum; (ii) or toward the hose end of said hose-to-wall fitting to enable connection of said first pair of electrical contacts to a plug attached to one end of an electrical cord for supplying high-voltage power therethrough.