One piece knock-out plug

Details One piece knock-out plug One piece knock-out plug

H - Electricity

02

G

337/40

H02G 3/08 (2006.01) F16C 33/20 (2006.01) H02G 3/06 (2006.01) H05K 5/02 (2006.01)

Patent

CA 1064588

ABSTRACT OF THE DISCLOSURE A closure or bushing member for openings in electrical boxes, conduit ends and the like is formed as an integral unit of a thermolplastic synthetic organic polymeric resin and includes a disc or annular shaped head and a coaxial hollow cylindrical shank of lesser diameter. Extending from opposite sides of the distal end of the shank are a pair of opposite radially projecting arms, which terminate in wing members of greater width than the radial arms and which have conically surfaced outer faces flaring rearwardly outwardly. A peripheral recess is formed in the rear outer face of each wing to provide a rear- wardly facing shoulder for resiliently engaging the inside border of the opening to which the closure member is applied to retain the closure member therein.

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