Geometrical instruments
Patent
1980-11-10
1982-09-14
Desmond, Eugene F.
Geometrical instruments
38 90, H01R 13585
Patent
active
043492401
ABSTRACT:
In a portable electric appliance that is cord connected to internal electric terminals by multiple conductors as in an iron, an improved strain relief between the cord and appliance comprises a housing chamber at the cord entrance with a cover over the chamber enclosing the conductors. A formed pocket in the chamber has a straight rear wall and a non-parallel sloped wall both molded as part of the housing and spaced from the rear wall, the two walls angling toward the cord entrance. A boss in the pocket is formed on the rear wall extending toward the sloped wall to define a pair of spaced conductor channels and also a central anchor to secure the cover. A separate barbed wedge-shaped member with barbs directed away from the cord entrance fits between the pocket walls to straddle the boss and slide in the channels. An elongated aperture provides for adjustable and aligning securement to the boss of the wedge between the cover and rear wall whereby the barbs clamp the conductors in the channels, regardless of their size, against any pull force on the cord such that the wedging action is continuously increased for strain relief between the cord and terminal by a simple three-piece construction.
REFERENCES:
patent: 1601255 (1926-09-01), Marra
patent: 3665374 (1972-05-01), Denton
patent: 3951504 (1976-04-01), Clark
patent: 4101729 (1978-07-01), Balchunas
patent: 4178057 (1979-12-01), McCormick
Cullen John F.
Desmond Eugene F.
General Electric Company
Platt Leonard J.
Powers George R.
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