Apparatus for dispensing composition

• Main Authors: CHASTEK THOMAS Q, ANTILA GAT V, LOVELYN, RICHARD, P, BARGE GIBSON L, SALNIKOV ILYA A
• Format: Patent
• Language: Chinese; English
• Published: 08.11.2022
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

The present invention provides an apparatus and method for dispensing a composition, the apparatus comprising: a cartridge (120) having an inlet (128) and an outlet (129); a screw (122), the screw being received in the cartridge; and a drive mechanism operably coupled to a shank end (134) of the screw to rotate the screw. The screw is hollow and includes both an inner surface and an outer surface, the inner surface defining a cavity (142) adjacent the outlet, and wherein the screw further includes a plurality of apertures (140) through which the cavity and the outer surface communicate with each other. The aperture is positioned along a perforated portion (146) of the cavity, wherein the perforated portion may have a lateral dimension that increases away from the shank end. The aperture may also provide an increasing aperture area relative to the outer surface of the screw as the distance from the shank end. The screw may also include a helical thread (132) having a raised thread section (150) and one or more