Locking mechanism

Details Locking mechanism Locking mechanism

1988-12-02

1990-08-28

Bryant, III, James E.

Pipes and tubular conduits

Longitudinally seamed

Sectional

138 92, 138157, 138166, 174 683, 174101, F16L 922

Patent

active

049517163

ABSTRACT:
A locking mechanism has an engagement hole formed in each side portion of a lid, an engagement projection formed on each side wall of a body for engagement with a corresponding engagement hole, holding plates disposed on a lid portion so as to hold the corresponding engagement projections toward the engagement holes in the adjacent side portions, and projections projecting from the edge surfaces of the respective side walls for engagement with corresponding holes formed in the lid portion. If a force acting to open the lid is externally applied, forces acting to press the engagement projections toward the corresponding engagement holes act upon the edge portions of the respective projections which project from the edge surfaces of the respective side walls of the body. Accordingly, the body and the lid can be made to positively lock into each other.

REFERENCES:
patent: 450142 (1891-04-01), Davidson et al.
patent: 1673642 (1928-06-01), Ruppelt
patent: 3425456 (1969-02-01), Schibig
patent: 3433270 (1969-03-01), Fischer et al.
patent: 3578026 (1971-05-01), Meyer
patent: 4015072 (1977-03-01), Gillemot
patent: 4589449 (1986-05-01), Bramwell
patent: 4667702 (1987-05-01), Roth
patent: 4723349 (1988-02-01), Grimes

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