Socket with safety device

Details Socket with safety device Socket with safety device

2000-01-27

2001-05-01

Patel, Tulsidas (Department: 2839)

Electrical connectors

With contact preventer or retractable cover part

Movably mounted

Reexamination Certificate

active

06224401

ABSTRACT:

BACKGROUND OF THE INVENTION
(a) Field of the Invention
Socket with safety device, more specifically socket comprising a revolvable security member by virtue of a blocking detent outstanding from both sides thereof an angular displacement will occur in the event one of both insert holes of the socket is being attempted unilaterally with a foreign material, the chassis is thereby safeguarded, and inroad by the intruding foreign material blocked; conversely, when a plug is being inserted with both legs altogether introduced simultaneously, the same safety device will yield by sinking directly, retract in, and by the guiding effect of the chassis the safety device will rotate to bid in the incoming plug to go down to the dead point, resting in place.
(b) Description of the Prior Art
Energy indispensable to daily living comes in a variety of forms, such as, for example, kinetic power, thermal power, etc., among which the electric power, in particular, is an essential source to the realization of power vested in other forms such as aforementioned kinetic or thermal power, electric power by and large is transmitted to cities and countrysides by power plants and power cable systems, yet to facilitate ready acquisition of electric power, plant generated power must be guided and led all the way down to the sockets mounted in civilian households or plant workshops, elsewhere indoors, sockets in this sense serving rightly to accommodate procuration of electricity to keep electric appliances working to which the electricity is the sole form of working power, by way of wire or leaders. That being the condition precedent, that is why in the household of a modern family there are so many sockets installed in place, indeed including extension sockets extended by extension wires, all serving the sole purpose of facilitating ready procuring of electric power for the benefit of the user, structurally, a socket comprises two inlet holes on the surface aligned straight to the conductor pieces mounted inside, so that once a plug by its two prongs is being inserted flat into the socket, conduction will make forthwith, such being a conventional design known to everybody, and needs not be given further detail as to its structure.
Something somewhat regrettable with such conventional design is that the socket is often installed on the wall about one foot above the floor, not to mention that an extension socket where used, is usually left at random on the ground, such a disposition of easy access would invite pitiably young kids in the house, as is often the case, to get nail, screwdriver, toy at hand, other implements and with same tamper with, attempt to make inroads into the insertion holes on the socket, installed on the wallfoot or left over aground inclusive, and that could strike a shock incident anytime and anywhere, reports of incidents as such are read from time to time on journals everywhere; moreover, the design for the insertion holes to communicate with the conductor pieces straight could easily incur dust accumulation or invite tiny insects to dwell within, that in the long run undermine the intended conducting purposes or result in oxidation followed by damage of the conductor pieces, shortcomings enumerated as such have for long been a target justified for improvement by the industrial communities; in that light the present invention provides the design of a socket with safety device which hopefully will eliminate all those regrettable possibilities associated with the use of a conventional design without prejudicing the conveniences to procure electric power supply where user's interest is concerned.
SUMMARY OF THE INVENTION
The primary object of the invention, therefore, lies in the provision of a socket with safety device which comprises a revolvable security member within, substantially T shaped, forming a hedge to the access holes, the ground level hole and the B plus hole, to be specific, the bottom of the security member is in the form of a round axis on either side in front juts a blocking detent whereby the security member may retract vertically once a plug by its two legs is inserted into the socket at the same time, the detent on contact with the chassis is guided into rotation whereby the ingoing plug may rest inserted in full to access electricity; should a non-conforming, that is, a foreign material gets inserted via a single hole, not both, the security member will respond to effect an angular displacement, resulting in having the detent on the side of the round axis to bear upon the chassis, the security member checked from sink-down, disabled from autonomous rotation, the intruding foreign material thus obstructed by the security member, shock is prevented altogether.
A further object of the invention is to provide a socket with a safety device whereof the insert lid comprises three holes, that is, incorporating one neutral static hole apart from the normally provided B plus holes and ground hole, correspondingly to the third neutral hole there is hinged a lid plate within, forming a coat upon the inner part of the neutral hole by the intervention of a torsion spring, such an inner lid plate may be pushed by a neutral leg that is being applied into the socket, as part of an ingoing plug, and which leg, once pulled up, will leave the lid plate restoring a lid-on state, thus enabling a three-hole socket to prevent dust inroads anytime, whether or not in use.


REFERENCES:
patent: 3930704 (1976-01-01), Dekanic
patent: 3980372 (1976-09-01), Ranzanigo
patent: 4179175 (1979-12-01), Farnsworth et al.
patent: 4707042 (1987-11-01), Haden
patent: 4932886 (1990-06-01), Glaser
patent: 5096432 (1992-03-01), Cullen et al.
patent: 5252082 (1993-10-01), Hsieh et al.
patent: 5267870 (1993-12-01), Maresh
patent: 5466164 (1995-11-01), Miyazaki et al.
patent: 5702259 (1997-12-01), Lee
patent: 5902140 (1999-05-01), Cheung et al.
patent: 5915981 (1999-06-01), Mehta
patent: 6015306 (2000-01-01), Jen

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