Airtight container cap

• US 3,924,772 A
• Filed: 01/30/1975
• Issued: 12/09/1975
• Est. Priority Date: 02/08/1974
• Status: Expired due to Term

• Current Assignee: Eugenio (Fidenza Magnani
• Original Assignee: Eugenio (Fidenza Magnani
• Inventors: Magnani, Eugenio (Fidenza
• Primary Examiner(s): Hall, George T.
• Application Number:
  US05/545,362
• Time in Patent Office: 313 Days
• Field of Search: 215/276,352,354
• US Class Current: 215/276
• CPC Class Codes: B65D 41/28 Caps combined with stoppers
• CPC Class Codes: B65D 51/145 by means of an additional element connected directly to the container

Abstract

An airtight container cap which comprises a ring-nut provided, on its side surface, with at least one window or slot, and on its upper surface with a circular hole, a stopper and a gasket of elastic material, said stopper being removably engagable with said ring-nut and said elastic gasket, with the gasket disposed inside the ring-nut in a position corresponding to the window.

Claims

1. An airtight container cap comprising a ring-nut provided, on the top surface thereof, with a circular hole and on the side surface thereof, with at least one window, a stopper adapted for removable engagement with the circular hole in said ring-nut and an elastic gasket provided with a central opening adapted to be removably inserted within said ring-nut in alignment with the window.

2. An airtight container cap according to claim 1, wherein the stopper includes a central portion having a diameter substantially equal to that of the ring-nut, an upper portion having a diameter substantially equal to that of the circular hole in the ring-nut to facilitate removable engagement of the stopper in said circular hole, and a lower portion having a diameter substantially equal to the diameter of the central opening in the gasket to facilitate the removable insertion of the lower portion within said central opening and the removable insertion of the gasket within said ring-nut.

3. An airtight container cap according to claim 1, wherein the ring-nut includes sealing means for securing the cap to a container provided with complementary sealing means.

4. An airtight container cap according to claim 3, wherein the sealing means in the ring-nut is an internal thread and the complementary sealing means on the container is a complementary thread.

5. An airtight container cap according to claim 1, wherein the ring-nut is formed of a plastic material, the stopper is formed of glass and the elastic gasket is formed of rubber.

6. In combination, an airtight container cap as claimed in claim 1 and a container.