Apparatus for preventing the use of an electrical device
AssigneeE. I. Du Pont de Nemours and Company
InventorGilles J. Herbert
Life of this patent
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Abstract
A lockout apparatus for preventing the use of an electrical device is characterized by a body having at least a first channel sized to receive a projecting portion of the electrical apparatus. A bore intersects the first channel and has a locking pin threadably displaceable therein. The locking pin is engagable in securing contact with the projecting portion of the electrical device receiveable within the channel. The body further includes a second bore intersecting the first bore, the second bore being sized for receipt of a member that prevents access to the locking pin disposed in the first bore.
Claims18
Apparatus for preventing the use of an electrical device that includes an electrical plug having a pair of power blades and a grounding blade, the apparatus comprising:
- a body, the body having a first and a second channel formed therein, the first channel being spaced a predetermined distance from the second channel, the body having a first bore that intersects both the first and second channels extending therethrough, the spacing between the first and second channels being such that a pair of power blades of a plug and a grounding blade thereof are respectively simultaneously receivable within the first channel and the second channel;
- and
- locking means disposed within the first bore and advanceable therethrough into locking engagement with a grounding blade disposed in the second channel.
Apparatus for preventing the use of an electrical device that includes an electrical plug having at least one arcuate blade, the apparatus comprising:
- a body having a channel formed therein and having a first bore that intersects the channel extending therethrough, the channel being sized to receive an arcuate blade of a plug, the body having a second bore intersecting the first bore, the first bore and the second bore each having an axis therethrough, the axis of the first bore defining a predetermined angle with respect to the axis of the second bore, the second bore being sized for receipt of an access prevention member therein;
- and
- locking means disposed within the first bore and advanceable therethrough into locking engagement with an arcuate blade of a plug disposed in the channel.
Apparatus for preventing the use of an electrical device that includes a switch having an operating lever extending from a face plate, the lever being rotatable from a first to a second position, the apparatus comprising:
- a body having a channel formed therein and having a first bore that intersects the channel extending therethrough, the channel being sized to receive an actuating lever of a switch, the body having an abutment surface having at least a line of contact defined thereon, the channel opening onto the abutment surface, the body having a second bore intersecting the first bore, the second bore being sized for receipt of an access prevention member therein;
- and
- locking means disposed within the first bore and advanceable therethrough into locking engagement with a lever of a switch received in the channel such that rotation of the lever throughout a range of arcuate motion sufficient to change the state of a switch is precluded by abutting interaction along at least the line of contact between the abutment surface and a face plate of the switch.
Apparatus for preventing the use of an electrical device having at least a first projecting portion thereon, the apparatus comprising:
- a body having at least a first channel formed therein and having a first bore extending therethrough, the first bore intersecting the channel, the channel being sized to receive a first projecting portion of an electrical device, the body having a second bore therein, the second bore intersecting the first bore, the first bore and the second bore each having an axis therethrough, the axis of the first bore defining a predetermined angle with respect to the axis of the second bore;
- and
- locking means disposed within the first bore and advanceable therethrough into locking engagement with a first projecting portion of an electrical device disposed within the channel.
Dependencies are inferred from the claim text.