Connector fitting for electrical box

Claim 1

A synthetic resin connector fitting for interconnecting an externally corrugated conduit with an electrical box having a wall with an aperture therethrough, said connector fitting comprising: a pair of semi-cylindrical collars, each of said collars including a concave inner side having alternating grooves and ribs formed therein for the reception of a corrugated conduit, and having a concave outer side, each of said collars further including: a semi-cylindrical body portion having a rectagular cross-sectional axial configuration; and a peripheral, radially outwardly extending facing flange on the concave outer side of the respective collar and adjacent one end thereof; a flexible hinge web interconnecting the semi-cylindrical collars by connection to the peripheral, radially outwardly extending facing flange on each of said collars, said hinge web facilitating the pivotation of the semi-cylindrical collars into a cylindrical collective array in which said collars abut each other along a common plane extended diametrically across the cylindrical collective array, and alternately, facilitating the pivotal opening of said collars apart from each other so that each of said semi-cylindrical body portions lies along a common plane; a pair of spaced, box-engaging projections extending axially from each of said semi-cylindrical collars at the end thereof adjacent which the respective facing flange is located, each of said box-engaging projections having an arcuate cross-sectional configuration conforming to a segment of a circle of substantially less than 90° of arc, and said projections each further including: a flexible web portion connected to the semi-cylindrical body portion of the respective one of said semi-cylindrical collars; and a wedge-shaped outer end portion connected to the web portion and defining with said web portion and with said semi-cylindrical body portion of the respective collar, an arcuate box wall-receiving recess, said recess being spaced from all of the ribs on the respective collar in an axial direction toward said wedge-shaped outer end portion, said box-engaging projections being dimensioned and positioned on their respective collars so that adjacent projections in a pair of projections in which the two projections of said pair are located on different collars are spaced from each other when said collars are pivoted into a cylindrical array with the semi-cylindrical body portions thereof in abutting contact with each other whereby the wedge-shaped outer end portions of said projections can flex freely radially inwardly without contacting and interfering with each other.