Electricity: conductors and insulators – Conduits – cables or conductors – Single duct conduits
Patent
1978-02-21
1982-12-28
Grimley, A. T.
Electricity: conductors and insulators
Conduits, cables or conductors
Single duct conduits
220 32, 220268, 339103R, H02G 308
Patent
active
043663435
ABSTRACT:
The structure according to the invention includes a pair of flange members depending angularly towards each other from opposite sides of each electrical power cable entry port formed in a sidewall portion of an electrical outlet box, with each pair of cooperating flange members adapted to enable essentially complete closure of the cable entry port. According to one aspect, each cooperating pair of flange members comprises a pair of cable grasping detent flanges, each spaced from its corresponding wall portion by a base-like projection to accommodate an entry port closure panel. According to another aspect, the inward edges of each cooperating pair of flange members are coupled together to close the cable entry port which may be formed with a portion extending into the backwall, with a rigid flange depending from the sidewall portion and extending parallel to the front edges of the flange members. Each pair of flange members may be a pair of cable grasping detent flanges coupled together by a frangible web-like member extending between their grasping edges, or the flange members may be relatively thin panel members forming a shallow angle with their corresponding sidewall portions, with their adjacent edges joined directly to each other.
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Brochure showing #425 "Bush-Grip Connectors" made by Blackhawk Industries, Dubuque, Iowa.
German printed application 2,349,766, Bom, Oct. 1972.
Bowden, Jr. Wade R.
Slater Thomas S.
Grimley A. T.
Slater Electric Inc.
Tone David A.
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