×

Tamper-indicating closure

  • US 4,462,504 A
  • Filed: 05/23/1983
  • Issued: 07/31/1984
  • Est. Priority Date: 05/23/1983
  • Status: Expired due to Term
First Claim
Patent Images

1. In a closure of the type which includes a closure member for effecting a seal, a vent opening through said closure member, a lever member connected to said closure member along a hinge line for moving the same to an open position, and said lever member carrying a plug receivable in said vent opening to close the same;

  • a tamper indicating means including a rivet carried by said closure member and said lever member having an opening therethrough receiving said rivet, said rivet being hollow and having a radially outwardly flared resilient end portion which is radially inwardly deformable to release said lever member.

View all claims
  • 6 Assignments
Timeline View
Assignment View
    ×
    ×