Receptacles – Closures – Closure guided in reciprocating movement
Patent
1981-09-17
1983-01-11
Hall, George T.
Receptacles
Closures
Closure guided in reciprocating movement
220315, B65D 4320
Patent
active
043678254
ABSTRACT:
Disclosed is a generally prismatic pressure-resistant housing for encapsulating electrical equipment in a flame-proof or explosion-proof manner. The housing has a generally rectangular opening and a lid of substantially rectangular shape. The lid when being closed or opened moves generally diagonally towards and away from the housing such that all four sides of the lid are simultaneously tightened or loosened, respectively. Structure for accomplishing this can comprise frames extending about the edges of the opening and the lid which include a flanged portion, a pair of locking channels extending about adjacent sides of the opening and meeting at a corner thereof and another pair of locking channels extending about adjacent sides of the lid and meeting at a corner thereof which is diagonally opposite the corner of the opening at which the locking channels meet. The locking channels extend over opposed flanged portions and engage the flanged portions in the locked condition of the lid.
REFERENCES:
patent: 3339785 (1967-09-01), Nugent
patent: 3352446 (1967-11-01), Anderson et al.
Hall George T.
Siemens Aktiengesellschaft
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