초록 ▼

The object of this invention is a lidded barrel with a barrel lid and a clamping-ring closure. Between its flat lid plate and its outer rim, the barrel lid is provided with a circular, perimetric groove while also featuring in its periphery at least one bung well with or without a bunghole. When a b

The object of this invention is a lidded barrel with a barrel lid and a clamping-ring closure. Between its flat lid plate and its outer rim, the barrel lid is provided with a circular, perimetric groove while also featuring in its periphery at least one bung well with or without a bunghole. When a barrel is dropped, the areas around the bung well are most vulnerable to breakage, i.e. it is in these areas that the barrel lid is most likely to slip out of the clamping ring with leaks resulting. In order to improve leak resistance of a lidded barrel, especially one suitable and approved for hazardous liquids, under extreme stress-load conditions, the area around the bung wells of the barrel lid is to be stress-relieved in the event of overstress (dropped barrel). According to the present invention, this is to be accomplished by making and incorporating between the recessed bung well and the upper edge of the outer, inverted-U-shaped rim of the barrel lid suitable provisions whereby the radial surface length--as measured from the center of the lid to the upper edge of the U-shaped rim--of this area or segment of the barrel lid are elongated in relation to the neighboring areas or segments of the barrel lid away from the bung well.

대표청구항 ▼

[ I claim:] [1.] In a lidded barrel (10) for storing and transporting hazardous liquid or solid bulk materials, the barrel having a barrel body (12) with an outer barrel wall and an upper barrel opening; an upper barrel lid (14) having a center, an outer inverted U-shaped rim (20) with an upper edge

[ I claim:] [1.] In a lidded barrel (10) for storing and transporting hazardous liquid or solid bulk materials, the barrel having a barrel body (12) with an outer barrel wall and an upper barrel opening; an upper barrel lid (14) having a center, an outer inverted U-shaped rim (20) with an upper edge (32) and a plurality of radial surface lengths extending radially from said center to the upper edge of the U-shaped rim (20) of said lid; and a U-shaped clamping-ring closure (16) which hooks under a flanged rim (48) provided on the outer barrel wall in the area of the upper barrel opening while clamping over the outer U-shaped rim (20) of the barrel lid (14) and, when in a closed position, pressing the said lid against the barrel opening for a closure impermeable to gas and liquids; the said barrel lid (14) having at least one recessed bung well (34, 44) recessed in the periphery of a central lid plate (18), and a first circular gripping groove (30) disposed between the central flat lid plate (18) and the rim (20) of the lid, the improvement comprising:a radial surface length extending through a region in front of said at least one recessed bung well (34, 44) is at least as long as radial surface length in lid regions disposed circumferentially away from said at least one bung well (34, 44).