Patent Number: 6,308,848

Title: Plastic screw cap with tamper-evident ring

Abstract: A plastic screw cap includes a cylindrical cup provided with an internalthread and with a tamper-evident ring which is coupled to the rim of thecup by means of a plurality of bridges forming a fracture line; the ringhas a collar or expansion for retaining it below an annular raised portionof a container whereto the cap is applied. Incisions are formed on theoutside of the tamper-evident ring, the incisions do not cross the entirethickness of the ring and allow an elastic radial expansion of the ring,such as to pass beyond the annular raised portion during the applicationof the cap to the container.

Inventors: Parrinello; Fiorenzo (Medicina, IT)


International Classification:

Expiration Date: 10/32013