Locks – Special application – For control and machine elements
Patent
1991-12-16
1993-04-06
Moore, Richard E.
Locks
Special application
For control and machine elements
137539, 1374545, 70164, B65D 5514
Patent
active
051992868
ABSTRACT:
A locking device for a drum for chemical- and hazardous-waste containment is described. The locking devices are of drums, usually 30- or 55-gallon sizes, of the closed-end type having a head with two openings or bung holes therethrough. Each drum opening has a flanged or internal portion with interior threads. The locking device has three basic elements, namely, a pair of caps and a slip wrench/locking bar. In one embodiment, one of the caps includes an overpressure relief valve and an flame arrester. Each cap has a threaded base and a larger apertured cylindrical portion mounted thereon. Each cap has a closure gasket mounted at the shoulder formed between the base and the apertured cylinder which gasket permits partial rotation without unsealing the drum. The cylindrical portion of the outer wall has at least two pairs of elongated apertures with 180-degree spacing between the apertures of each pair. The apertures extend, with the cap installed, in the corresponding opening, beyond and external to the drum head with the elongation of the aperture substantially axial to the drum. In operation, the slip wrench looking bar extends through the elongated apertures of both caps and has provision for a padlock installation at one end.
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Boucher D.
Moore Richard E.
Silber Siegmar
Taurus Precision, Inc.
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