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Патент USA US2611003

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Sept. 16, 1952
Filed Aug. 1e, 1949
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Patented Sept. 16, v1952
2,610,999v .
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SAFETY ELEc'rnio‘oU'rLE'r
Sidney Silver, Brooklyn, N. Y;
,application 'August-16, 1949, Serial No. 110,563 v
1 claim. (ci. newest)
This invention relates tonew and useful im
provements in an electric >outlet receptacle.
Fig. 3 is an end elevational View looking from
the left hand side- of Fig. 2.
The present invention'pr'oposes the construc=-
Fig. 4 is an enlarged longitudinal vertical sec
tional view taken on the line 4-4 of Fig. 1.
tion of an electric outlet receptacle characterized
by a casing having >the usual openings intoV which
‘ Fig. 5 is a horizontal sectional view taken on
the prongs of an electric plug are to be inserted
with a slide member normally closing the open
ings in a manner to prevent the unauthorized in
the line 5_5 of Fig. 4. -
Fig. 6 is a transverse vertical sectional view
taken on the line 6_6 of Fig. 4.
sertion of conductive` objects other vthan the
"Fig 7 is a transverse vertical sectional view
prongs of an electric plug, vespecially by very small 10 taken
on the line 'I--T of Fig. 4.
children,-With resulting damage to the electric
Fig. 8 is an enlarged detailed view of a portion
circuit and elimination of serious burning and, in
of Fig. 7.
some instances,l death of the» child.
Fig. 9 is an enlarged detailed view of another
Another object of the present invention pro
portion of Fig. 7.
poses forming the slide~ with a pair of slots spaced 15
Fig. 10 is an enlarged perspective'view of one
a distance equal Atothe spacing of the'openings
of the slide members, per se.
with a resilient-means acting on the >slide mem
ber to retain the same in a position in which the
slots will be out of kalignment with the openings
preventing the _insertion of unauthorized objects
into the openings.
Still another object of thev present invention
The electric outlet receptacle, according to the
present invention, includes a casing I5 having a
top or front Wall I6, side Walls I'I and I8, end
20 Walls I9 and 2D and an open back closed by means
of a plate 2l. The exposed face of the top or
front Wall I6 is formed with spaced recesses 22.
proposes arranging the slide member so that it
Within each of the recesses 22 there is formed
will have one end exposed at one side of the cas
a pair of spaced openings 23 through which the
ing to be urged inward against the action of the 25 spaced prongs of a. conventional electric plug,
resilient means to align'the slots of the slide
not shown, can be inserted as is generally known
member with the openings to permit the inser
in the art. '
tion of prongs of the plug whendesired.
>Within the casing I5 there is formed a spaced
A still _further object of .the present invention
pair of projections 24, one in alignment with
proposes constructing the casing so that all of the
each of the pair of openings 23. Each of the
operative parts of the slide members are mounted
24 is formed with a pair of cavities
directly on the casing which has an openback
25, see particularly Figs. 5 to 7. The construc
closed by means of a plate which is to Abe secured
tion is such that each of the openings 23 is in
to a support wall or other structure. A 'Y
direct communication with one of the cavities.
The present invention further proposes a novel
means for releasably- securing the casing »to the 35 Within each of the cavities 25 there is a metallic
conductor strip 26 of substantially inverted V
plate which closes' the back of» the casing so that
the casing can be'separated from the plate for
access to the interior thereofwithout .the use
ItV is a further `object of the.v present invention
to construct an electric outletreceptacle which is
simple and durable and which canbe manufac
tured and sold at a reasonable cost.
For further comprehension'of the invention,
and of the objects and advantages thereof, refer
ence will be had to the following- description and
accompanying drawings, and to A»the appended
claim in which the various novel features of the
invention are more particularly set forth.
In the accompanying drawingforminga ma
terial part of the present disclosure:V
Fig. 1 is a front elevationalviewfof .the elec
tric outlet receptacle accordance
withV the. present invention.
Extended between the projections 24
there' is a pair of parallel metallic conductor
members 21. Each of the conductor members
40 has one of its ends secured to one of the con
_ ductor strips >26 of each pair by means of a rivet
28. Mounted on each 0f the conductor members
21, »intermediate of its ends there is small screw
29 which is to be used to connect the bared ends
45 of a length of electric'wire to the conductor mem
w bers 2l, as isgenerally known in the art. The
end wall 20 of the casing I5 is formed with the
usual notch-Siithroughfwhich the electric wire
is adapted to‘enter the casing I5.` The prongs of
the electric plug When inserted into the open
ings 23 will project into the cavities 25 and make
electrical contact with the respective conductor
strips 26.
Means is provided in connection with each pair
Fig. 2 is a side elevational view vlooking in the 55 of openings 23Jfor closing4 the openings so as to
Ydirect-loner the line 2-2 ofFig. 1_.
K, prevent small children from poking metal objects.
or other conductive articles into the openings
and making contact with the conductor strips
26 with a resulting short circuit and possible
burning of the child and even death, in some
instances. That means is comprised of a pair
of slide members 3| of non-conductive material
formed at one of their ends with enlarged iinger
engagingmportions 32. The sidewall I1 inalign
be molded or fashioned of any desired non-con»
ductive material. The plate 2| is shown pro
vided with a pair of spaced holes 40, see Fig. 4,
through which screws or the like, not shown, can
be passed for securing the plate 2| to a wall or
other support.
The plate 2| is of a size to ñt snugly within the
openback of thecasingl 5, _andmeans‘is provided
ment with Jeach of’ the projections «i Minis-¿formed
for. releasabl'yf; retaininggthe casing.: I5 on the
with an Vopening v33and the projections 24 be-~
tween the openings 23 and the cavities 25 are,
plate 2 I; The releasable retaining means is com
prised of a small hook 4I integrally formed with
one end of the plate 2| and which is engageable
withiaicomplementary lug 42 formed on the inner
faceof >the adjacent end wall I9.
Atth'eother end, the plate 2| is formed with an
formed with passages 34. The ends of the slider'
members 3|, opposite the enlargedfî ñngerg- err-_:
gaging portions 32, are passed through the open'-l
ings 33 and through the passages 34~so`that-»-thesï
slide members 3| will close the openingsáßrand».
prevent the prongs of the plug from being passed
therethrough to make electrical contact»- with
the conductor strips 25. Each of the slide mem
bers¢3| j isf formed-with». afpair. of; slots„.35ffspaced
from each other a distancegeduaigtopthe: spacing;
of„,the._opening_s, 23..
Resilient; means _: isA îprovided «_ for; retaini-ngg> the:
slide members; 3| in- positions-.inïwhích¿thefslots
35'wil'l be out of Valignment.withgthe openings 23;
The resilientjmeans¿comprisesfaßpinì foreach -_of
the slide membersfBl, whichjs mountedjxedly;
unstanding; latchgelement 43 engageable with a
complementary keeper element 44 slidable on the
end-¿wall 20 of the casing I5. The keeper ele
ment 44 is slidably retained in position upon a
supporttmember ‘4.55byämeansf ofz‘a' .pin' 46 which
passesïthrougir anïelongated :'slot'41 `formed vin the
keepert‘elementilm. Agsmallîexpansion spring 48
operatesrbetweerrthezkeeperl element >lllLand a part
ofithey supportilmemberl: 45? urging ~>the= keeper ele,
m'entëßd in'> aidirectim~,tozengage-ithe îlatch Yele
Tlieisid‘e?of fth'e-keeperfelement“:adjacent the
in position» through‘thesidawall .»| ßi-andevwhichghas
its inner end freely*P projectedfinto` a- comple#
mentaryhole 3] -formed-in theîadiacent end ofthe
respective slide member 3|. Expansiongsprings;
end 'walllë 20; issformediwitli al laterally extending
The luigi:V 491; projectsáthrough‘ an elon-.
38.. are` coaxially - mounted»- on -; the »pins- 36x; and
ment 44 against‘the-actiowoiäthe'spring 48 to free
th’el-latoleèfelement 43Íiso~tliatthe casing I5 can
bef-removedif?onrtlie‘plate-J2li 'The topV` of the
latch-element 4-3 isßfòrmedfwith an-inclined cam
operate between the inside face oiitheïsidegfwall
| 84 . and the ,- adjacent .vendxojf i thesrespectiveçslide
member 3| urging thefslide,memberscintofposifv
tions` inîwhich Athev respectiveïslots 35arwiilgfbei out
o_f 'ß alignments with the respectíyejy openings:y 23::
Mounted .» across the i. slidesJ members 3'] : adjacent'
' the finger>~ engagingfportionsg 32;; theres are clon-f'l>
gatedy-pegs139» Asfshown-finfEigs.; 5 toifî; Qfand'slo;
the ends -of- the pegsfSSr-prcject: beyondîthe sides'
of` therî slide; members, 3 | f and; engagezther. inner
face of> the sidefwallsiil 1:lim;î,ting:the;action ofîther
springs» 38pm urging ¿the-slide membersi3| foutwa'rd‘
andl so hold-` the slide?z members: int positions ,'in-î
which the outer faces of the ñnger [email protected]
tionsf32 'will be; flush;Withithegouter.: facefof'f' the
sidewall î | Él .c
When: it fis desired.; toi' insertv the‘iprongs ofíarrv
electricplug,` it' is merelyfnecessary to: press` inf-.
wardron the»1exposedifaceiofì'theïñnger'engaging'
portion-e 321»I of; the respectivefslide: member 31»,
against thef~action- offthe respective-i springt-38;vr
whichcauses thefslots .35%.of»that?slicle<"memberf-3|í
to :beaaligned »with thea openings'fï23'ê . Thevfprongsf
offtheepluggl can then bef-passed throughthe operi-_
ingsïf23; the` slots;A 35 an'dxinto'îl the? cavities 25S to’
makeßlectrical'zcontackwith thezconductorßstripsa
2 .6: » As. »long as_çthe yprongs:areaeirtended? into theL
cavities >25 fthe: slide' rnemloer-iy 3 | iwillzbe-iretainedi
against;V outward: move-menti; by - theë` spring-v 38:
Howeventhe ¿moment-fthe# prongs ~ ofëthefplugèïaref
Withdrawn; the slides [email protected]
is;- free* to» be
moved outward-*by4 thefexpansionsprings?38 until'
the‘iprojeetingf en'ds ci"- the `pegë39ïfïstrike the inner‘
faceA ofithe-_tsideï wall"v I'II.` In thatiï'positioni the
siotsr35ìof-tli'e slide member `3‘ï| Lw-ill loe-out"offalígn4-`
menti. with i the openings Zai-preventing'- tiie i u'n‘-`
authorized> insertiontr of ' l«metallic conductive;
[email protected] formedëin‘vthe-:endiwall20, as shownv
in'Fig-sá llite-5yYV tof-beiusedito' urge-'the-»keeper ele
surfaeelMQ-'see'iï‘i'gj fììïwhîchis-tostrike the keeper
element-244 when’theècasing lâlisffpressed into posi
tion‘fon-` -~theip1ater-~2 I-i andeurge it, against the ac
tion" of“tli`e~sp`ringf48, soïthatl'the latch- element
43 can passthe keeper element ¿44‘iwhen’thefcas
ingff | 5;'is; bein'gjreturned- tov its lposition mounted
on the‘plate 21:.
@n 'the drawing: _thenovel’features‘of ‘the pres
ent", invention are*A shown applied" to4 an outlet
receptacle :offtheduple'x type, ,but those features
could" b’e‘- equally,> wellappliedj to . a receptacle oi’Y
the. simplex, or, triplex' typei or a> receptacle em
bod'ying; four; .-ñ'veion six , outlets», .without depart
ing;l from thÍe.. scope-2. andg, intent oi;4 the.> present;
invention. .
'While Lhaveç-illustratedand described the pre.-n
ferred embodiment-._-of my:` invention, it is to be
understood,that-‘Iidonot'limitmyself to the pre
cise construction-_ herein; disclosed and the right
isfreserved1totallÉchanges¿andjmodiñcations comV-`
ing:witbinitheesconesoiïithezinvention asdeiined.
Having thus described my invention, what I.
Claim" @Si new? aridi desire: to, secure: by ' United
States fettersseatentiiszf
ImamGleotrïeoutlèt‘receptacle; a casing en_
closing a pairrcniL spacediiconductor- strips, saidV
casing-ihaä/ingfa»fronttwalllformed with a pair of
spaced' openings'alignediiwithgthe conductor strips «
the'p'rongs- ofïanelectrio plug can
be~passed=tolcentact>tliefconductor strips ; a` slide
member slidabiy» positioned? within- saidV casing;
adjacent*tiieïrontfwail "and: formed- with aA pair
of"A slots spacedà aè distance- correspondingv to> Vthe
artic'les'rinto4V theopenings 231 '
70 spacingof the' spaced-openingsof' the front wall,
- Both :the casing‘|5`1andíthe‘plateï21 aregformed`v
resilient'- means 'urginggsaid’ slideV member` intoY a _
of a non-conductive material and on the draw'->
ing; thosefparts arefillustrated‘asbeing >molded‘of
positionin which said slots, will beidisalignedy from
the , spaced openings. _said’slide member having
aîresinousfplasticsmateriall- However; the` showing i
one end exposed at ‘one ~Side ofthe casing by which
iszabyïwayiofß illustration only' as 4those parts `could 75 said slide member can be pushed against the‘
action of said resilient means to align said slots
with the openings permitting the prongs of the
plug to be inserted into the openings when de
sired, said one end of said slide member being
formed With an enlarged finger engaging portion
exposed at the said one side of the casing by which
the slide member can be slid inward against the
action of said resilient means to align said slots
The following references are of record in the
ille of this patent:
end of said slide member adjacent said enlarged
finger engaging portion, said peg having its ends
projected beyond the sides of said slide to en
Nelson ___________ __ Mar. 19,
Moss _____________ __ Oct. 12,
Hamilton _________ __ Apr. 11,
Huber ____________ __ Aug. 2,
Kilgore ___________ __ June 6,
gage the inner face of the said one wall of the
Popp ______________ __ May 8, 1951
with the openings, and a peg mounted across the
casing when said slide member is urged by said
resilient means to limit the action of said re
silient means in urging said slide member to a 15 Number
position in which the outer face of said enlarged
ñnger engaging portion is ñush With the outer
face of the said one Wall of the casing.
England ___________ __ Apr. 8, 1937
France __________ __ June 14, 1932
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