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Plastic pry-off paint can assembly

a technology of paint cans and plastics, applied in the field of containers, can solve the problems of making the disengagement of the walls from one another more difficult, but not impossible, to achieve, and achieve the effects of improving the drop test performance, facilitating the removal of the closure, and reducing the surface area

Inactive Publication Date: 2013-03-28
LETICA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention is about a closure design for containers that can be stacked without attached ring members. The closure has a lip that fits into a ring and an undercut-type lock that improves drop test performance and makes it easier to remove the closure. The bottom of the container has a tongue and a groove that fit into gaps between the closure and the ring to provide stability when stacked. The technical effects are improved stackability and stability of assembled containers.

Problems solved by technology

The term “lock” is used herein to refer to an undercut, interference fit between two radially adjacent plastic walls which makes disengagement of those walls from one another more difficult, but not impossible, to achieve.

Method used

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  • Plastic pry-off paint can assembly
  • Plastic pry-off paint can assembly
  • Plastic pry-off paint can assembly

Examples

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Embodiment Construction

[0020]Referring to FIG. 1, there is shown a container assembly 10 comprising a molded plastic, one gallon cylindrical container 12 having an essentially non-tapered, cylindrical side wall 14 and an integral closed bottom 16. The container side wall 14 terminates in an embedded upper peripheral rim 18. The container assembly 10 is, in this instance, made entirely of high density polyethylene but it will be apparent to those skilled in the art that other plastic materials and blends thereof may be used.

[0021]In accordance with the invention, an annular ring member 20 is secured to the top rim 18 of the container 12 by means of adhesive. Again, other attachment methodologies may be used including spin welding, heat welding and snap-tight interference fits.

[0022]The ring member 20 comprises a peripheral portion 22 having a downwardly opening annular groove 23 which is adapted and sized to receive the upper rim portion 18 of the container side wall 14 therein. The ring member 20 further ...

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PUM

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Abstract

An all plastic paint container assembly comprising a container, a ring assembly attached to the rim of the container and a pry-off plastic closure having a dual sealing arrangement with the ring member and an undercut lock at a location which provides maximum circumferential area and lies directly under the highest point on the closure. Containers of this design can be stacked both with and without the ring members attached. Three embodiments are disclosed, providing double and triple closure locks and multiple seals.

Description

RELATED CASE INFORMATION[0001]This application is a continuation of U.S. application Ser. No. 12 / 765,257 filed under attorney docket no. LTC-138-B on Apr. 22, 2010, currently pending, which application is a continuation-in-part of U.S. application Ser. No. 12 / 540,585 filed under attorney docket no. LTC-138-A on Aug. 13, 2009, currently pending. The content of the U.S. patent application Ser. Nos. 12 / 765,257 and 12 / 540,585 are incorporated herein by reference.FIELD OF THE INVENTION[0002]This invention relates to containers and more particularly to a container assembly which is particularly well suited for paint and which comprises a pry off plastic closure sealingly nested into a ring attached to the top rim of a container.BACKGROUND OF THE INVENTION[0003]Paint cans and lids have been traditionally been made of steel. There are a number of disadvantages associated with steel paint cans including cost, weight, a propensity to rust, and disposal issues.[0004]As a result, a number of st...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B65D43/02B65D1/16B65D21/02
CPCB65D43/0206B65D21/0217B65D1/165B65D2543/00462B65D43/0204B65D2543/00074B65D21/0212
Inventor LETICA, II, ANTONSELINA, JOHN R.HARPER, WAYNE J.
Owner LETICA
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