Fire-rated ceiling grid cross joint

Details Fire-rated ceiling grid cross joint Fire-rated ceiling grid cross joint

1977-02-04

1978-08-15

Shedd, Wayne L.

Joints and connections

Utilizing thermal characteristic, e.g., expansion or...

403346, 52664, F16B 722

Patent

active

041068785

ABSTRACT:
A grid for a fire-rated suspended ceiling includes a plurality of identical parallel spaced main beams and a plurality of identical parallel spaced cross tees supported by the main beams, the main beams and cross tees each having a substantially inverted T cross section and each including coupling means integral with the ends thereof, the coupling means for each main beam featuring a laterally offset tongue and an integral offset bulb end portion that is crushed to reduce its lateral dimension and to form a stiffening rib, whereby relative is facilitated.

REFERENCES:
patent: 3501185 (1970-03-01), Brown et al.

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