초록 ▼

A drum lifter ring formed as a one-piece molded synthetic resin ring having a plurality of rows of radially outwardly opening recesses in a midportion thereof, a rigid top wall projecting radially outwardly to beyond the outer surface of the midportion, and a rigid bottom wall projecting radially in

A drum lifter ring formed as a one-piece molded synthetic resin ring having a plurality of rows of radially outwardly opening recesses in a midportion thereof, a rigid top wall projecting radially outwardly to beyond the outer surface of the midportion, and a rigid bottom wall projecting radially inwardly beyond the inner surface of the midportion. The bottom wall is provided with a plurality of downwardly opening recesses. The top wall defines a downwardly opening annular recess adjacent the outer surface of the ring midportion. In the illustrated embodiment, the radially outwardly opening recesses in the midportion are provided in a plurality of vertically spaced rows, with the recesses of the respective rows vertically aligned.

대표청구항 ▼

A drum lifter ring for use in lifting a drum by means of an upwardly directed lifting hook, the drum having a top wall and a sidewall provided with an annular, outwardly opening groove spaced below the top wall, said lifter ring comprising a one-piece ring of moulded synthetic resin having an annula

A drum lifter ring for use in lifting a drum by means of an upwardly directed lifting hook, the drum having a top wall and a sidewall provided with an annular, outwardly opening groove spaced below the top wall, said lifter ring comprising a one-piece ring of moulded synthetic resin having an annular thin-walled midportion defining a radially outer surface, a radially inner surface, and a plurality of recesses spaced circumferentially therein, and opening radially outwardly through said outer surface, an annular rigid top wall having a radially outer portion projecting outwardly beyond said midportion outer surface and defining a downwardly opening annular recess for receiving an upwardly extending lifting hook, and an annular rigid bottom wall having a radially inner portion projecting inwardly beyond said radially inner surface of the midportion to be fixedly received in an annular groove of a drum to which the lifter ring is to be mounted, a radially outer portion, and at least one downwardly opening recess in said bottom wall disposed between said radially inner portion and said radially outer portion.