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Home Metal Working Permanently-attachable-key-activated-on-off-switch

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 Permanently attachable key-activated on/off switch

Details
Inventors: Lindow, Edgar J.; Domning, Denise L.;
Assignee:
Primary Examiner: Bradley; Paula A.
Assistant Examiner:
Attorney, Agent or Firm: Knobbe Martens Olson & Bear

A permanently attachable key-activated on-off switch comprises a housing with an electrical receptacle on one end and an electrical plug on the other. The electrical receptacle receives a locking pin that is inserted through the prongs of the receptacle and an appliance plug in the receptacle so that the appliance plug is permanently attached. A key switch is attached to the housing which controls and the flow of power between the electrical plug and the electrical receptacle when the electrical plug is inserted into a standard electrical outlet.

DETAILED DESCRIPTION The present invention is a permanently attachable key-activated on/off switch.
It receives and locks with an electrical plug of an appliance at one end.
At the other end is a plug which may be received into a standard wall outlet.
The flow of power to the attached appliance is regulated by a key switch.
The invention may be easily plugged into or removed from a wall outlet.
The invention is, however, permanently attachable to the plug of the appliance.
Thus, the appliance can be moved to another wall outlet and still be regulated by the key switch of the device.
The present invention allows an appliance with the present invention permanently attached to be received into any receptacle at any time.
All Underwriters' Laboratory (U.
L.
) approved 120 volt 15 amp standard two and three prong power plugs must have a hole, approximately 0.
125 inches in diameter drilled through both power prongs of the plug.
All U.
L.
approved electrical receptacles have dimples in the power prongs that rest inside the holes of the power prongs of an electrical plug that is inserted into the receptacle.
This helps hold the electrical plug inside the receptacle.
In one embodiment of this invention, a standard electrical receptacle is modified by drilling holes in the prongs where the dimples are in a standard receptacle.
Once a power plug is inserted into the modified electrical receptacle of the invention, the holes in the plug will coincide with the holes drilled in both the receptacle power prongs and the power plug housing.
The appliance plug is permanently attached to the invention by inserting the unremovable plastic locking pin through the housing, the modified receptacle and the plug.
Once the plastic barbs at the tip of the plastic pin pass through all of the holes and expand, the plastic pin cannot be withdrawn.
The plug of the appliance is then permanently attached to the key-activated on/off switch.
A second embodiment of the present invention also offers the advantages of permanently attaching to the appliance, rather than the wall, permitting mobility of the appliance subject to the invention and permitting key regulated access to the appliance's functions



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