Vacuum pocket-opening turret
Patent 4035988 Issued on July 19, 1977. Estimated Expiration Date: 
July 19, 1994. 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.
July 19, 1994. 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 References 2333571 3821873 InventorAssigneeApplicationNo. 05/693024 filed on 06/04/1976US Classes:53/562, Forming a pocket or pouch by folding and side sealing (e.g., flat bag making)53/386.1, Including means to apply suction53/570Bag or sackExaminersPrimary: McGehee, Travis S.Attorney, Agent or FirmAbstractA rotating turrent equipped with a plurality of spring-biased, reciprocating vacuum nozzles is employed in conjunction with a packaging machine which forms packages from strip stock. The reciprocating nozzles are rotated about a stationary cam which sequentially thrusts the nozzles out into engagement with the outer sidewall of a strip of U-shaped stock material which has been formed into a series of longitudinally-spaced pockets and which strip is positively secured to a filling station at its other sidewall by suction means. The spring-biased vacuum nozzle is then retracted in order to effect separation of the top edges of the sidewalls and permit filling of the pocket with a granular material. | |
