Electrical connectors – With unauthorized connection preventer – e.g. – key or...
Patent
1998-04-16
1999-10-12
Abrams, Neil
Electrical connectors
With unauthorized connection preventer, e.g., key or...
439148, 439364, H01R 1344
Patent
active
059645989
ABSTRACT:
A simple lockout device for electrical equipment equipped with recessed power blades is described. The device comprises a face-plate (12) having a threaded member (14) attached thereto and apertures suitable for accommodating the power blades of a piece of electrical equipment, an elastomeric nose (16) abutting the face-plate having a hole for passage of the threaded member therethrough and power blade apertures in registration with those of the face-plate, a block (20) having a recess (34) in its forward face for receiving at least a portion of the hose, a hole therein for receiving the threaded member and an integral extension (26) extending from its rear face. A thumb screw (22) suitable for turning with the hands and having internal threads suitable for engaging the threaded member attached to the face-plate is inserted into a passage in the integral extension to engage the threaded member in such a fashion that when the device is inserted over the recessed power blades of a piece of electrical equipment and the thumb screw (22) tightened, the elastomeric nose (16) is compressed between the face-plate (12) and the block (20) forcing it to expand laterally thereby securing the device in the recess and precluding the accidental or intentional energization of the piece of equipment by attachment of a power cord to the recessed power blades. Means are provided in the interval extension and the thumb screw for the attachment of a locking device (46) which will satisfy OSHA standards.
REFERENCES:
patent: 3182280 (1965-05-01), Etal
patent: 4932874 (1990-06-01), Hollopeter
Abrams Neil
Duverne J. F.
Southeastern Universities Research Assn.
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