Closure construction for sifting containers

• US 3,129,860 A
• Filed: 11/14/1962
• Issued: 04/21/1964
• Est. Priority Date: 11/14/1962
• Status: Expired due to Term

• Current Assignee: John A. Foster
• Original Assignee: John A. Foster
• Inventors: Foster, John A.
• Application Number:
  US04/242,032
• Time in Patent Office: 524 Days
• US Class Current: 222/512
• CPC Class Codes: A47J 47/01 with dispensing devices
• CPC Class Codes: B65D 47/265 between planar parts B65D47/24 takes precedence

Claims

1. A SIFTER TOP FOR A DISPENSING CONTAINER COMPRISING A RIGID SHEET METAL TOP WALL DEFINING AN ANNULAR RIGID DOME HAVING A TOP SURFACE OF PRONOUNCED CONVEX CURVATURE AND A HOLE THERETHROUGH OFFSET LATERALLY FROM THE AXIS OF THE DOME, AN UPRIGHT WALL LARGER THAN SAID DOME AND SURROUNDING THE LATTER TO FORM AN ANNULAR UPWARDLY OPENING INTERVENING GROOVE BELOW THE PERIPHERY OF THE DOME, A DISK OF RESILIENTLY YIELDABLE PLASTIC LARGER THAN AND LYING AGAINST THE TOP OF SAID DOME AND MOLDED TO AN INITIAL CURVATURE LESS THAN THAT OF SAID DOME SURFACE, AND MEANS FORMED OUT OF SAID UPRIGHT WALL AND OVERLYING THE EDGE OF SAID DISK TO BEND THE OVERHANGING MARGIN THEREOF DOWNWARDLY TO AND AGAINST THE PERIPHERAL EDGE OF SAID DOME AND HOLD THE DISK IN TIGHT FACE TO FACE CONTACT WITH SAID DOME SURFACE WHILE PERMITTING TURNING OF THE DISK ABOUT ITS AXIS, SAID DISK HAVING A PERFORATION THEREIN ADAPTED TO REGISTER WITH SAID HOLE IN ONE ANGULAR POSITION OF SAID DOME AND TO BE COVERED BY THE LATTER IN OTHER POSITIONS.