Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS2160353 A
Publication typeGrant
Publication dateMay 30, 1939
Filing dateJan 13, 1938
Priority dateJun 4, 1936
Publication numberUS 2160353 A, US 2160353A, US-A-2160353, US2160353 A, US2160353A
InventorsMichael J Conners
Original AssigneeMichael J Conners
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Cable connector for outlet boxes
US 2160353 A
Images(1)
Previous page
Next page
Description  (OCR text may contain errors)

y 1939- C M; J. CONNERS- 2,160,353

CABLE CONNECTOR FOR OUTLET BOXES Original Filed Ju'n .4, 1955 /W/-H,4z. J Can/N595.

INVENTOR.

WNEJS, g%" 6% ATTORNEYS.

Patented May 30, 1939 UNITED STATES CABLE CONNECTOR FOR OUTLET BQXES Michael J. Connors, Larchmont, N. Y.

Original application June 4, 1936, Serial No. 83,492, now Patent No. 2,128,040, dated August 23, 1938. Divided and this application January 13, 1938, Serial No. 184,726

2 Claims.

tion to provide a new and novel construction of I support for supporting electrical conductors in the walls of outlet boxes.

l It is another object of the invention to provide a novel connector of the type mentioned which also functions to connect a conductor or cable to the wall of an outlet box and prevent relative movement thereof.

It is another object of the invention to provide a novel means for attaching a connector in operative position in the wall of an outlet box.

Still a further object of the invention resides in a novel construction whereby the connector may be attached to the wall of an outlet box without necessitating the use of tools or separate fastening means.

Still a further object of the invention resides in the provision of a novel structure whereby 33 certain elements employed in connection with the coupling, are clearly visible from within the outlet box when the several parts are in their assembled position.

Various other objects will appear as the nature of the invention is better understood and reference will be had, therefore, to the following specification and claims and the accompanying drawing, in which:

Figure 1 is a fragmentary perspective view of D an outlet box showing a connector constructed in accordance with the present invention attached thereto with an electrical conductor in place in said connector.

Figure 2 is a detail sectional view taken subwhen removed, provide openings for the reception of electrical conductors leading into and from the box in the ordinary manner.

A connector constructed in accordance with the present invention comprises a main body portion 52 which is of cylindrical tubular form. One end of the body portion is defined by an outstanding annular fiange it and this end constitutes the outer end of the connector when in position in the outlet box. The other end is formed with an. inwardly projecting annular flange M and this end constitutes the inner end of the connector When in position in the outlet box. The inwardly projecting annular flange I4 is provided, is also a portion of the main body portion, with a plurality of cut out portions l5, the purpose of which will be hereinafter more clearly described.

The main body portion Q2 of the connector is also provided with a plurality of longitudinally extending relatively narrow slots E6, the purpose of which will hereinafter become apparent.

Surrounding the inner end of the main body portion, there is a band i! and this band is adapted to abut the inner edge of the annular flange i i heretofore mentioned as best illustrated in Figures 3 and 4. Projecting from one edge of the encircling band ii, there is a plurality of resilient fingers it, which are adapted, when the encircling band is placed in proper position upon the main body portion, to register with the cut out portions or slots l5 thereof.

There is also provided a spring finger 19 provided with conductor engaging teeth 25!, the purpose of which will be hereinafter pointed out.

In use, the inner end of the main body portion is inserted in an opening in the wall of the outlet box, which opening is formed by removal of a knock-out ii. The connector is next forced into said opening, it being understood that a conductor is positioned within the connector.

As the connector is passed through the opening in the wall of the outlet box, the resilient fingers l8, as well as the resilient finger 19, will stantially on the line 2-2 of Figure 1, pass into their corresponding slots in the body 4 Figure 3 is a perspective view of the connector, portion, it being understood that there will be a Figure 4 is a longitudinal sectional view of the slot provided for the reception of each resilient connector on a slightly enlarged scale, the view finger, to permit of movement of the connector being taken substantially on the line 44 of Figrelative to the wall of the outlet box to an exure 3, and; tent which will permit the resilient fingers l8 to 5 Figure 5 is a detail sectional View taken subengage the wall of the outlet box and function stantially on the line 55 of Figure 4. in cooperation with the fiange l3 to secure the Referring to the drawing, the reference nuconnector in place in the manner clearly illusmeral l0 designates an outlet box having the trated in Figure 2 of the drawing.

conventional knock-outs ll. These knock-outs, As is also illustrated in Figure 2 of the draw- 55 ing, the resilient finger l9 will be operated in such a manner that the biting teeth 20 will be moved into biting engagement with the conductor and will be retained in this position by reason of its engagement With the defining edge of the opening in which the connector is mounted.

In the installation of such devices, certain regulations require that an insulating bushing be employed betwen the conductor and the connector. In the drawing, this bushing is designated 30 and is passed around the conductor before the same is inserted into the connector. This bushing 30 is so positioned that it will extend beyond the armor of the conductor as illustrated in Figure 2, and when in proper position, will be clearly visible through the openings l5, heretofore mentioned when the connector and conductor are in operative position. By this construction, it will be apparent that an inspector, merely by looking into the outlet box, can determine whether the bushing has been applied as required merely by glimpsing a sight thereof through said opening l5.

By reference to Figure 2, it will be apparent that when the device is placed in position in one of the knock-out openings of an outlet box, the resilient fingers i8, will spring outwardly as their free ends clear the opening in the wall of the outlet box and in springing outwardly, will engage behind the wall of the outlet box to prevent withdrawal or accidental displacement of the connector relative to the wall of the outlet box.

It will also be apparent from said Figure 2, that the resilient finger l9 which carries the biting teeth 20 in engagement with the conductor, will by reason of the fact that it is slightly longer than the fingers l8, engage the inner wall or edge of the knock-out opening and will, by reason of such engagement, be maintained in such position that its biting teeth 20 will be positively held in biting engagement with the conductor to prevent longitudinal movement thereof so long as the conductor is in position in the knock-out opening.

While in the present illustration of the invention I have repeatedly mentioned'an electrical conductor, it is to be understood that this term is intended to include conductors of all types, as well as armored cables for protection of such conductors and that when armored cables are employed, the biting teeth will engage the armor rather than the conductor.

From the foregoing, it will be apparent that the present invention provides a new and improved connector for supporting and attaching conductors, either armored or otherwise, in the walls of outlet boxes, which may be placed and which is held in operative position without necessitating the aid of special tools, fixtures or clips.

While the invention has been herein illustrated in a preferred form, it is to be understood that it is not to be limited to the specific construction herein shown, and that it may be practiced in such other forms as rightfully fall within the scope of the appended claims.

Having thus described the invention, what is claimed as new, is:

1. A cable connector for outlet boxes comprising a tubular member adapted for insertion in a knock-out opening of an outlet box, said tubular member having a plurality of elongated slots in its side walls, a band encircling said tubular member, a plurality of resilient fingers extending from said band there being one resilent finger for each of said slots and one of said fingers a knock-out opening of an outlet box, said tubular member having a plurality of elongated slots in its side walls, an outstanding annular flange upon the outer end of said tubular member, a band encircling the inner end of said tubular member, a plurality of resilient fingers extending from said encircling band in the direction of the outer end of the tubular member, there being a resilient finger for each of said slots, certain of said resilient fingers being of such length that their free ends are spaced with respect to the afore-mentioned flange upon the outer end of the tubular member, a distance substantially equal to the thickness of the wall of the outlet box to which the tubular member is attached, and at least one of said members being long enough to extend substantially to said afore-mentioned annular flange and into the knock-out opening of the outlet box, and conductor engaging means carried by said last mentioned finger and held in conductor engaging position by its engagement with the defining edge of the knock-out opening in which the connector is positioned.

MICHAEL J. CONNERS.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2458409 *Feb 17, 1947Jan 4, 1949Paige Electrical Products CorpOutlet box connector
US3008117 *Oct 31, 1957Nov 7, 1961Pyle National CoPressure terminals for electrical connectors
US3276403 *Apr 23, 1964Oct 4, 1966Hirsh Mfg Co SaKnockdown steel shelving unit and corner fastening means therefor
US3798866 *Dec 30, 1971Mar 26, 1974IttHanger insert for steel floor deck and the like
US3822053 *Dec 16, 1971Jul 2, 1974Daily CorpTubular picket fence
US3871430 *Oct 26, 1973Mar 18, 1975Usm CorpRetainer clip
US4575133 *Aug 27, 1984Mar 11, 1986Commander Electrical Materials, Inc.Conduit connector
US5200209 *Mar 5, 1990Apr 6, 1993Westinghouse Electric Corp.Apparatus for producing plastic parts with a resilient projection
US6682355Jan 21, 2003Jan 27, 2004Arlington Industries, Inc.Electrical fitting for easy snap engagement of cables
US6916988Sep 13, 2004Jul 12, 2005Bridgeport Fittings, Inc.Electrical connector with frustro conical snap fit retaining ring
US7045714Jan 3, 2005May 16, 2006Bridgeport Fittings, Inc.Electrical connector with conical snap fit retaining ring
US7057107Oct 26, 2005Jun 6, 2006Bridgeport Fittings, Inc.Snap fit electrical connector assembly with conical outer snap fit retainer and externally mounted internal wire retainer
US7064273Jul 13, 2005Jun 20, 2006Bridgeport Fittings, Inc.Electrical connector with conical split snap ring retainer
US7075007Jun 13, 2005Jul 11, 2006Bridgeport Fittings, Inc.Snap fit electrical connector assembly with conical outer snap fit retainer and one or more internal snap fit wire retainers
US7151223Apr 12, 2006Dec 19, 2006Bridgeport Fittings, Inc.Snap fit electrical connector assembly with outer frustro conical retainer ring and internal unidirectional snap fit wire conductor retainer
US7154042Apr 7, 2006Dec 26, 2006Bridgeport Fittings, Inc.Electrical connector with snap fit retainer ring constructed to enhance the connection of the connector to an electrical box
US7205489Feb 28, 2006Apr 17, 2007Bridgeport Fittings, Inc.Snap fit electrical connector assembly with operating tool for facilitating the connection of a connector assembly to an electrical box
US7214890Oct 10, 2006May 8, 2007Bridgeport Fittings, Inc.Electrical connector having an outlet end angularly disposed relative an inlet end with outer retainer ring about the outlet end and internal unidirectional conductor retainer in the inlet end
US7358448Mar 20, 2007Apr 15, 2008Bridgeport Fittings, Inc.Electrical connector assembly with frusto-conical snap fit retaining ring for enhancing electrical grounding of the connector assembly to an electrical box and installation tool therefor
US7438327Feb 22, 2006Oct 21, 2008Bridgeport Fittings, Inc.Electrical connection assembly with unitary sealing and compression ring
US7488905Aug 8, 2006Feb 10, 2009Bridgeport Fittings, Inc.Electrical connector with outer retainer ring and internal unidirectional conductor retainer
US7494157Mar 28, 2005Feb 24, 2009Bridgeport Fittings, Inc.Electrical connector with snap fit retaining ring with improved holding and grounding tangs
US7645947Jan 6, 2009Jan 12, 2010Bridgeport Fittings, Inc.Electrical connector with outer retainer ring and internal unidirectional conductor retainer
US7703813Sep 4, 2008Apr 27, 2010Bridgeport Fittings, Inc.Electrical connector with snap fit retaining ring with improved holding and grounding tangs
US7723623Jan 8, 2008May 25, 2010Bridgeport Fittings, Inc.Electrical duplex connector having an integrally formed connector body with a frustro-conical retaining ring and unidirectional cable retainers
US7820922May 5, 2008Oct 26, 2010Bridgeport Fittings, Inc.Electrical offset nipple connector with frustro-conical retaining rings
US7952034Sep 21, 2007May 31, 2011Bridgeport Fittings, Inc.Strap type electrical connector with frustro-conical retaining ring and improved clamping strap for either nonmetallic cables or armor or metal clad cables
US8119933Feb 9, 2010Feb 21, 2012Bridgeport Fittings, Inc.Duplex electrical connector with frustro-conical retaining ring and crimped inlet end
US8143535Jan 30, 2009Mar 27, 2012Bridgeport Fittings, Inc.Electrical connector assembly with enhanced grounding
US8350163Feb 9, 2010Jan 8, 2013Bridgeport, Fittings, Inc.Electrical connector having snap in frustro-conical retaining ring with improved conductivity
Classifications
U.S. Classification285/194, 411/436, 411/970
International ClassificationF16L5/00, H02G3/06
Cooperative ClassificationY10S411/97, H02G3/065, F16L5/00
European ClassificationF16L5/00, H02G3/06C1F