Shielded door assembly

Details Shielded door assembly Shielded door assembly

1984-08-16

1986-02-18

Grimley, A. T.

Electricity: conductors and insulators

Anti-inductive structures

Conductor transposition

174 35GC, 292 36, H05K 900

Patent

active

045714495

ABSTRACT:
A shielded door assembly for a generally rectangular opening in the electrically conductive wall of a grounded building has an electrically conductive frame secured to the wall along three of the sides of the opening. A tubular frame is secured to the first frame along the three sides thereof. An electrically conductive threshold having a non-interrupted contact surface is secured to the tubular frame at the remaining side of the opening. An electrically conductive door stop is secured to a first edge of said tubular frame and extends outwardly therefrom and cooperates with the tubular frame and the first frame for defining a pocket. An electrically conductive tubular door rim is pivotally secured to said first frame and is adapted for pivoting between an open and a closed position. The door includes a first surface thereof adjacent the threshold and a plurality of electrically conductive resilient spring means are secured to the first surface for establishing electrical connection between the door and the threshold. A plurality of electrically conductive resilient springs connect the door to the pocket for thereby further facilitating electrical communication between the door and the building. A locking assembly is also provided for maintaining the door in the closed position.

REFERENCES:
patent: 2056226 (1936-10-01), Mussey et al.
patent: 2584088 (1952-01-01), Floyd
patent: 3055969 (1962-09-01), Schaller, Jr.
patent: 3437735 (1969-04-01), Schaller, Jr.
patent: 3745226 (1973-07-01), Nichols et al.
IBM Technical Disclosure Bulletin, Lockhart, Twin Flex Contact, vol. 13, No. 10, 3/71.

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