Mechanism for locking two halves of an underground vault

Details Mechanism for locking two halves of an underground vault Mechanism for locking two halves of an underground vault

1980-09-29

1982-06-08

Lowrance, George E.

Receptacles

Outlet or junction box type

Sectional receptacle

220293, 220297, 220300, 220 4B, 220 4E, B65D 804, B65D 4106

Patent

active

043335802

ABSTRACT:
An underground vault formed of two housing sections, each section having an open end bordered by an outwardly projecting annular flange, the flanges being of like diameter to permit their mutual abutment when the two sections are placed together to form an enclosure, each flange having a plurality of circumferentially located, equally spaced hooks and slot configurations to lock the sections together when the sections are positioned so that alternating hooks and slots of one section are aligned with slots and hooks of the other section is disclosed.

REFERENCES:
patent: 193686 (1877-07-01), Bowers
patent: 211164 (1879-01-01), Klein
patent: 308742 (1884-12-01), Borup
patent: 492227 (1893-02-01), O'Neil
patent: 1408982 (1922-03-01), Calhoun
patent: 2693343 (1954-11-01), Darin et al.
patent: 2919937 (1960-01-01), Dovey
patent: 3221881 (1965-12-01), Weiler et al.
patent: 3400863 (1968-09-01), Brown
patent: 3514010 (1970-05-01), Rossi
patent: 3854582 (1974-12-01), Martinelli

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