Lockable valve cover

Locks – Special application – For control and machine elements

Reexamination Certificate

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Details

C070S180000, C137S385000

Reexamination Certificate

active

06843083

ABSTRACT:
A lockable valve cover has a housing with an open end and a pair of opposing slots on opposite sides of the housing extending from the open end for engaging over spaced locations on a pipe on opposite sides of a valve over which the housing is placed, the pipe extending in a first direction through the slots. A pair of openings on opposite sides of the housing are aligned in a second direction perpendicular to the first direction with a first opening being larger than a second opening, and a locking plate having a reduced width tongue engages across the housing through the openings, with the tongue projecting through the second opening. A padlock engages a hole in the tongue to lock the housing in place.

REFERENCES:
patent: 112910 (1871-03-01), Essex
patent: 748720 (1904-01-01), Glazier
patent: 812021 (1906-02-01), Dahl
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patent: 4630456 (1986-12-01), Nielsen, Jr.
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patent: 6092402 (2000-07-01), Porcelli et al.
patent: 6354116 (2002-03-01), Drake
patent: 6718804 (2004-04-01), Graves et al.

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