Cup for dental waste

Claim 2

A dental cup for waste such as wads and pads of cotton wool, cement rests and the like, comprising a conical beaker made of a plastic foil and having at least one recess disposed along the edge of the open end of the cup to facilitate removal of waste from tweezers, spatula and other dental instruments, the upper edge portion of the cup merging with an outwardly and downwardly projecting flange, characterized in that the flange has arranged therein two upwardly extending hollow portions which extend above the upper edge of the cup to define a narrow recess in the flange of the cup to enable the dental instrument to be applied in the recess and drawn rearwardly to scrape the waste against the edges of the recess.

Claim 3

A cup according to claim 1 having at least two recesses in the edge thereof, characterized in that the raised portions in the flange of the cup defining the recesses merge into one another at the regions between the recesses and form an even end edge surface of the cup between the recesses.

Claim 4

A cup according to claim 1 having at least two recesses in the edge thereof, characterized in that the raised portions in the flange of the cup and defining the recesses are in the form of local promontories separated by non-deformed flange portions in the regions lying between the associated pairs of raised portions, each pair of raised portions defining a recess.

Claim 5

A cup according to claim 1, characterized in that, at its free edge, the flange has an outwardly extending edge portion which forms a continuous stiffening ring around the upper end of the cup, the radially outer wall portions of the raised portions connecting at their lower ends with said stiffening ring.

Claim 6

A cup according to claim 1, characterized in that the inside of the cup merges continuously with the inner wall portions of the raised portions.

Claim 7

A thin walled dental cup for waste such as wads and pads of cotton, cement rests and the like comprising a conical shaped annual sidewall having an opening at one end thereof; said sidewall at the open end being bent first outwardly and then downwardly to form a continuous flange whereby the continuous free end of said downwardly bent portion lies below the flange to form an interior portion for receiving the upper end of a cup receiving member; said flange being deformed to provide a pair of upwardly extending projections each having at least one sloping end wall portion, the adjacent sloping portions of said projections cooperatively forming a recess; the said projections each having an inner and outer surface, said inner surface being coplanar with the inner surface of said sidewall and said outer surface being coplanar with the outer surface of the downwardly extending sidewall portion; said projections being hollow; said end wall portions being integrally joined to said inner and outer surfaces to strengthen the projections and thereby prevent said projections from being bent when a dental instrument is pulled through said recess.

Claim 8

A thin walled dental cup for waste such as wads and pads of cotton, cement rests and the like comprising a conical shaped annual sidewall having an opening at one end thereof; said sidewall at the open end being bent first outwardly and then downwardly to form a continuous flange whereby the continuous free end of said downwardly bent portion lies below the flange to form an interior portion for receiving the upper end of a cup receiving member; said flange being deformed to provide a pair of upwardly extending projections each having at least one sloping end wall portion, the adjacent sloping portions of said projections cooperatively forming a recess; the said projections each having an inner and outer surface, said inner surface being coplanar with the inner surface of said sidewall and said outer surface being coplanar with the outer surface of the downwardly extending sidewall portion; said projections being hollow; said end wall portions being integrally joined to said inner and outer surfaces to strengthen the projections and thereby prevent said projections from being bent when a dental instrument is pulled through said recess.