The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 18, 1993
Filed:
Nov. 27, 1991
Jeffrey L Havens, Farmington Hills, MI (US);
Other;
Abstract
An electrical power cord in one embodiment comprises a plug having prongs for insertion in an electrical outlet, a tubular member disposed about the plug, the plug and said tubular member being relatively movable. A spring is disposed between the tubular member and the plug and compressed when the prongs are inserted in the outlet so as to bias the plug in a direction away from the outlet. An interlocking lever is disposed on the tubular member for interlocking the tubular member and the plug when the prongs are inserted in the outlet. A wire coil is disposed on the tubular member and is provided with an electrical current when the prongs are inserted in the outlet to move a magnetically susceptible trip means in a manner to disengage the interlocking lever and allow the spring to eject the plug from the outlet.