Container cover locking assembly

• US 4,359,171 A
• Filed: 07/28/1981
• Issued: 11/16/1982
• Est. Priority Date: 07/28/1981
• Status: Expired due to Fees

• Current Assignee: Continental Plastic Corp
• Original Assignee: Continental Plastic Corp
• Inventors: Lewis, Duane H.
• Primary Examiner(s): Hall, George T.
• Application Number:
  US06/287,707
• Time in Patent Office: 476 Days
• Field of Search: 220/307, 220/339, 222/565, 222/569, 222/153, 222/566, 222/480, 222/556
• US Class Current: 220/835
• CPC Class Codes: B65D 2251/1016 Means for locking the closure in closed position
• CPC Class Codes: B65D 47/0842 consisting of a strap of flexible material

Abstract

An improved container cover locking assembly has a base member with a continuous peripheral skirt depending therefrom and a ridge parallel to yet spaced inwardly from the skirt along the underside of the base member. Tapered locking lips depend downwardly from the ridge, extend along a substantial portion thereof and curve outwardly toward, yet terminate short of, the skirt. At least one support rib is vertically disposed along each of the locking lips to stiffen the lips in the normal locking position. The locking assembly allows a simplified molding process for a container cover which is assembled with a container body of the type having a curved mounted seat formed from the upper edge of the containers'"'"'s walls.

Claims

1. A locking assembly for a container cover used with a container body of the type having a cover seat formed from the inwardly curved upper edges of the container body'"'"'s side panels, comprising:

a base member;

a continuous peripheral skirt depending downwardly from said base member, a ridge depending downwardly from said base member, said ridge being spaced inwardly from and having a longitudinal axis parallel with said skirt and forming together with said skirt and the portion of said base member between said skirt and said ridge a mounting channel which engages said container mounting seat;

several tapered locking lips depending from said ridge and curving outwardly toward yet terminating short of said skirt for urging said container cover down against said mounting channel; and

at least one support rib attached to each of said several locking lips, said rib being transverse to the longitudinal axis of said ridge and on the face of each lip opposite said mounting channel such that said ribs stiffen said locking lips once said container cover is mounted onto said container body.

2. The apparatus of claim 1 including a plurality of support ribs equally spaced along the length of the locking lips.

3. The apparatus of claim 2 wherein the tapered locking lip terminates in a beveled edge which urges said lip away from the skirt during the installation of the cover onto the container body mounting seat and wherein the supporting ribs extend from the bottom of the base member to the beveled edge of the locking lip.

4. The apparatus according to claim 3 wherein the cover is integrally molded from a resinous material.

5. The apparatus according to claim 4 wherein the peripheral skirt depends downwardly below the terminal portion of the locking lip.

6. The apparatus according to claim 5 wherein the container cover is rectangular and the locking lips laterally extend along a substantial portion of each edge of said cover.

7. The apparatus according to claim 5 wherein the container cover is circular and includes a plurality of arcual locking lips.

8. The apparatus according to claim 5 wherein the tapered locking lips extend downwardly below the terminal edge of the cover seat.