|Publication number||US1593985 A|
|Publication date||Jul 27, 1926|
|Filing date||Mar 24, 1923|
|Priority date||Feb 8, 1923|
|Publication number||US 1593985 A, US 1593985A, US-A-1593985, US1593985 A, US1593985A|
|Original Assignee||Elek Citets Et Francis Sonnich|
|Export Citation||BiBTeX, EndNote, RefMan|
|Referenced by (15), Classifications (6)|
|External Links: USPTO, USPTO Assignment, Espacenet|
July 27,; 192 1,593,985
A. NIELSEN SOCKET AND PLUG CONNECTION FOR ELECTRIC CIRCUITS Filed March 24 1923 rn' niedigluly. 1
- PATENTJ'OFF 1; were sonmcnsnn a oo., or cnnrsrmnm; nonwa'v. socxnr am: rnuecomcrron 0a 'nmcrnrc cmcu'rrs Application fled larch 24, 192;, term :0. 027,235, and m myremws, 192a.
The present invention. relatesto the type of electric plug and socket connections which comprises. a central lug, having two radial .contact pins, and w ich-fits into a central recess in the socket, the radial contact arms of the plug'being brought in engagement with contact surfaces in the socket upon being rotated a certain angle after its introduction in the socket. The invention has for its object to provide a plug and 'socketconnection of this type, having means for momentaneous closing and interruption of the 'current, sa1d means acting also to prevent unintentional touching of t e contact surface 1ns1de the socket. v
On the drawing: a Fig. 1 is an axial sectional'viewthrough the socket embodying the present invention. Fig. 2 is a lan view of the same with the plug remove Fig. 3 is a detail view of the'mechamsm for instantaneous closing and interruption seen from below and Fig. 4 is a detail axial section through the mechanism of Fig. 3. I I
A is the plug, which has a cylindricalextension, carrying two radial contact arms a, b of copper, brass, aluminium or the like connected with the current leads. The plug with its radial arms a, b, is adapted to be introduced in the socket through a corresponding opening in the socket cover.
I Inside the socket there is provided two contact members d, 6, with which the contact arms a, b may be brought in engagement by-turnin'g the plug about its axis at a right angle. The contact members (.1, e are connected. with the main lines. The above mentioned construction of plug and socket connection is a well known type and does not form any part of the present invention.
The socket is provided with an intermedi-- ant I partition f, having a central opening and at the underside of its intermediant partition there is mounted in accordance with 3 and v4 comprises-a central rotatable memher 2, having on its circumference two camsor bosseso, n, which are adapted to be .en- I gaged by correspondingcams or bosses l, m, 5
'vided according to the present invention 0 with a central rod 1' angular or flat in cross section and extending upwardly towards the opening inthe socket cover and adapted to fit into a correspondingly shaped opening 8 in the plug, thus connecting the plug with B5 I the rotatable member 12, when the plug is. introduced in the socket. For bringing the plug contact arms a, b-into'or out of engagement withnontact members 11, e, the bosses n, :0 on rotatable member p will have to be. brought past the bosses l, m on arms g, h, which causes a snapping movement to.
take place at the point where the contact arms a, b, are brought into or out of contact with contact (1,0. a
Besides servingthis purpose. the central rod or pin r obstructs the opening in the, socket leading to .the interior thereof, and thus prevents unintentional touching of the contact members (1, e inside the socket.
Claims:- I II I I I 1. In a plug and socket connection for electric circuits,'a plug having radial contact arms, a socket having contact surfaces into and out of engagement with which said contact arms are adapted to be moved by turning the plug about its axis after its in-' troduction into the socket, means located. I within the socket for causing instantaneous I engagement and disengagement between the plug contact arms and the socket contact. surfaces, andmeans including a coupling rod in the socket for establishing an operative connection between the plug. and said means when the plug is inserted in the socket. 2. In a plug and socket connection for electric circuits, a plug having radial contact arms, a socket having contact surfaces into and out of enga ement with which said contact armsare a apted to be moved by turning the plug about its axis after its innrnnn'mnsnn, or cnms'rrmu, nonwair', Assrenon ro nnnxgnrcrrnrsrrnmaar" I i i .troduction into the socket, niehns compristhe plng, the plu havin a recess adapted her for causing instantaneous engagement in the socket.
ing a rotatable spring controlled cam rnemto receive said r when't e plug is inserted and disengagement between the'plug contact In testimony that I claim the foregoing as arms and the socket contact surfaces, and a my invention, I have signed my name,
coupling rodassociated with said rotatable member extending in the axial direction of ALFRED NIELSEN.
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US2448592 *||Jun 10, 1943||Sep 7, 1948||Carl J Frederickson||Plug connector|
|US2490429 *||Sep 4, 1945||Dec 6, 1949||Granger Elmer E||Terminal plug|
|US2492475 *||Feb 20, 1948||Dec 27, 1949||Granger Elmer E||Adapter|
|US2524701 *||Aug 3, 1949||Oct 3, 1950||Charles T Grill||Combination electric plug and socket|
|US2731615 *||May 3, 1954||Jan 17, 1956||Lysle L Hazen||Electric socket and plug construction|
|US2741749 *||Mar 31, 1954||Apr 10, 1956||Smith Stephen||Safety plug and receptacle|
|US2844672 *||Jul 6, 1954||Jul 22, 1958||Italo Rizzieri||Electric outlet socket and plug|
|US2871456 *||Mar 7, 1952||Jan 27, 1959||Hubbell Inc Harvey||Locking connector|
|US2926327 *||Feb 4, 1957||Feb 23, 1960||Italo Rizzieri||Socket and plug connection for electric circuits|
|US2942224 *||Jan 13, 1956||Jun 21, 1960||Ite Circuit Breaker Ltd||Electric receptacle|
|US3233203 *||Nov 17, 1964||Feb 1, 1966||Hubbell Inc Harvey||Keyed dead front electrical connector and cap|
|US3384863 *||Sep 21, 1966||May 21, 1968||Agfa Gevaert Ag||Photographic flash unit|
|US3601779 *||Jan 27, 1969||Aug 24, 1971||Waller Edmund M Sr||Interlocking electrical connector|
|US5035635 *||Sep 4, 1990||Jul 30, 1991||Tsai Shiang Shiun||Revolving safety socket|
|US5336103 *||Aug 26, 1993||Aug 9, 1994||Herboldsheimer John D||Female socket-based male plug locking device|
|U.S. Classification||439/180, 439/338, 439/333, 200/51.9|