Connector for joining two lengths of sheet metal ducting...

Joints and connections – Member ends joined by inserted section – Laterally inserted section

Reexamination Certificate

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C403S292000, C285S424000

Reexamination Certificate

active

07018127

ABSTRACT:
A connector for joining two pieces of sheet metal together end-to-end. A second wall and a first wall define a first channel therebetween, into which a ledge extends, and which lockingly receives one piece of sheet metal, by virtue of at least one reverse button lock on a raw free end of the one piece of sheet metal snapingly engaging against the ledge. A third wall terminates in a free edge that is folded onto itself, and together with the first wall, defines a second channel therebetween that lockingly receives the other piece of sheet metal, by virtue of at least one reverse button lock on a raw free end of the other piece of sheet metal snapingly engaging against the folded free edge of the third wall.

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patent: 0 298 912 (1988-06-01), None
patent: WO89/10512 (1989-04-01), None

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