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US 5,630,726 AGranted
Locking electrical cord
OwnerChristopher T. Baldwininventor
Life of this patent
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Abstract
A locking, non-catching electrical cord has smoothly rounded edges so as not to catch on foreign objects. The male prongs of the extension cord taper from the end of the cord to a rounded end of the same height, and the prong receptacles are shaped to fit the male prongs, so as to allow the prongs to snap-fit into the receptacles. Alternatively, the prong receptacles may have two cavities skewed from one another, and the male prong end of the cord may be twisted once situated within the prong receptacle to create a locking fit.
Claims20
A locking electrical cord, comprising:
- a cord having a male end with two conductive prongs and a female end with two conductive prong receptacles;
- said conductive prongs tapering from a maximum height at the male end to a lesser height at the remote end, and terminating in a rounded locking head at the remote end;
- said conductive prong receptacles shaped to fit said male prongs, said receptacles tapering from a maximum height at the outer, entrance end to a lesser height at their inner ends, and terminating in an inner rounded recess adapted to tightly receive said locking head protrusion in snap-fit retention therewith.
A locking electrical cord, comprising:
- a cord having a male end with two conductive prongs and a female end with two conductive prong receptacles;
- said conductive prongs tapering from a maximum height at the male end to a lesser height and ending in a locking head;
- each said conductive prong receptacle having a lower and an upper cavity section, said upper and said lower cavity sections skewed at an angle to each other;
- and said upper cavity section having an upper surface;
- said upper cavity section lined on said upper surface with metal.
2 more elements
Dependencies are inferred from the claim text.