Process for making a closure
Patent 4497765 Issued on February 5, 1985. Estimated Expiration Date: 
June 22, 2002. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
June 22, 2002. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesInventorsApplicationNo. 06/390346 filed on 06/22/1982US Classes:264/268, Cap or cup-like preform (e.g., container closure, etc.)215/252, Twist-off motion frees reusable closure249/59, FORMING HELICAL OR THREADED PRODUCT264/230, UTILIZING HEAT RELEASABLE STRESS TO RESHAPE SOLID WORKPIECE (E.G., ELASTIC MEMORY, ETC.)264/250, By separately molding different article portions264/266, Simultaneously shaping material and reshaping preform264/274, Preform particularly provided with means to provide interlock with shaped material425/110, DISTINCT MEANS TO FEED, SUPPORT OR MANIPULATE PREFORM STOCK AND MEANS FOR SHAPING FLUENT OR BULK STOCK TO FORM UNITED PRODUCT425/127, Preform stock acting as reaction shaping surface cooperating with recessed fluent stock shaping means425/291, With scoring or diverse severing means425/809SEAL (BOTTLE CAPS ONLY)ExaminersPrimary: Woo, Jay H.Assistant: Housel, James C. Attorney, Agent or FirmInternational ClassesB29C 37/00 (20060101)B29C 43/36 (20060101) B29C 43/42 (20060101) B29C 59/02 (20060101) B29C 67/00 (20060101) B29C 57/00 (20060101) B29C 69/02 (20060101) B65D 41/34 (20060101) B65D 41/04 (20060101) B29C 43/18 (20060101) B29C 53/02 (20060101) B29C 53/00 (20060101) AbstractA novel closure-making process and apparatus are disclosed for formation of plastic closures. The closures include a plastic closure cap which is compression molded to provide a closure having the requisite strength. The process includes steps for formation of a sealing liner within the closure cap if desired, with formation of a novel liner-retaining arrangement provided for secure retention of the liner within the cap. The process also includes steps for formation of a tamper-indicating pilfer band integrally with the plastic cap of the closure for formation of closures requiring a suitable tamper-indicating device.Field of SearchSimultaneously shaping material and reshaping preformAgainst inner surface of hollow preform Cap or cup-like preform (e.g., container closure, etc.) Cavity lining type Preform particularly provided with means to provide interlock with shaped material By separately molding different article portions Making hole or aperture in article UTILIZING HEAT RELEASABLE STRESS TO RESHAPE SOLID WORKPIECE (E.G., ELASTIC MEMORY, ETC.) | |
