US2008308555A1PendingUtilityA1

Shipping and storage drum with screw on locking cover

56
Individually held — no corporate assignee on recordPriority: Jun 13, 2007Filed: Jun 13, 2007Published: Dec 18, 2008
Est. expiryJun 13, 2027(~0.9 yrs left)· nominal 20-yr term from priority
Inventors:Michael D. StolzmanKenneth J. Kuzelka
B65D 2543/00092B65D 2543/00537B65D 2543/00555B65D 43/0231B65D 1/16B65D 2543/005B65D 2543/00296
56
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Claims

Abstract

A shipping and storage drum with a screw on locking cover comprises an open end drum, a plastic cover and a locking member. The open head drum comprises a sidewall open at a top end by a threaded plastic chime. The chime comprises an annular wall having a rounded top edge with a plurality of thread segments and a flange extending outwardly from the annular wall below the thread segments and having a flange opening. Each thread segment comprises a plurality of threads extending outwardly from the annular wall. The thread segments are circumferentially spaced by non-threaded portions. A circumferential length of each non-threaded portion is similar to a circumferential length of each thread segment. The plastic cover has a central circular wall surrounded by a downwardly opening generally U-shaped wall for receiving the chime. The U-shaped wall comprises an outer annular sidewall and an inner annular sidewall connected by a rounded channel for sandwiching the chime. A flange extends outwardly from the outer annular sidewall and has a flange opening. The outer annular wall has a plurality of inwardly extending thread segments each having a plurality of threads. The thread segments are circumferentially spaced by non-threaded portions. A circumferential length of each non-threaded portion is similar to a circumferential length of each thread segment. The cover is selectively screwed onto the chime with a fractional turn of the cover with the chime rodded top edge being sealed in the rounded channel. The locking member is insertable through the flange openings to prevent the cover from backing off of the drum.

Claims

exact text as granted — not AI-modified
1 . A shipping and storage drum comprising:
 an open head drum comprising a sidewall open at a top end by a threaded plastic chime, the chime comprising an annular wall having a rounded top edge with a plurality of thread segments extending outwardly from the annular wall, the thread segments being circumferentially spaced by non-threaded portions, a circumferential length of each non-threaded portion being similar to a circumferential length of each thread segment; and   a plastic cover having a central circular wall surrounded by a downwardly opening generally U-shaped wall for receiving the chime, the U-shaped wall comprising an outer annular sidewall and in inner annular sidewall connected by a rounded channel for sandwiching the chime, the outer annular wall having a plurality of inwardly extending thread segments, the thread segments being circumferentially spaced by non-threaded portions, a circumferential length of each non-threaded portion being similar to a circumferential length of each thread segment,   wherein the cover is selectively screwed on to the chime with a fractional turn of the cover and the chime rounded top edge being sealed in the rounded channel.   
   
   
       2 . The shipping and storage drum of  claim 1  wherein the drum chime and the cover each included eight thread segments. 
   
   
       3 . The shipping and storage drum of  claim 1  wherein each drum chime and cover thread segment comprises three threads. 
   
   
       4 . The shipping and storage drum of  claim 1  wherein each chime thread segment comprises a stop for limiting threaded movement of the cover onto the chime. 
   
   
       5 . The shipping and storage drum of  claim 1  wherein the drum further comprises a flange extending outwardly from the annular wall below the thread segments and the cover comprises a flange extending outwardly from the outer annular sidewall. 
   
   
       6 . The shipping and storage drum of  claim 5  further comprising aligned openings in each of the flanges and a locking member for insertion in the openings to lock the cover on the drum. 
   
   
       7 . The shipping and storage drum of  claim 1  wherein the inner annular sidewall comprises a plurality of outwardly extending ribs. 
   
   
       8 . The shipping and storage drum of  claim 1  wherein the chime rounded top edge seals against each of the outer annular sidewall and the inner annular sidewall. 
   
   
       9 . The shipping and storage drum of  claim 1  wherein the threads have about a ¼″ pitch. 
   
   
       10 . The shipping and storage drum of  claim 1  wherein the chime has a diameter of at least about 15 inches. 
   
   
       11 . A shipping and storage drum with a screw on locking cover comprising:
 an open head drum comprising a sidewall open at a top end by a threaded plastic chime, the chime comprising an annular wall having a rounded top edge with a plurality of thread segments and a flange extending outwardly from the annular wall below the thread segments and having a flange opening, each thread segment comprising a plurality of threads extending outwardly from the annular wall, the thread segments being circumferentially spaced by non-threaded portions, a circumferential length of each non-threaded portion being similar to a circumferential length of each thread segment;   a plastic cover having a central circular wall surrounded by a downwardly opening generally U-shaped wall for receiving the chime, the U-shaped wall comprising an outer annular sidewall and in inner annular sidewall connected by a rounded channel for sandwiching the chime, and a flange extending outwardly from the outer annular sidewall and having a flange opening, the outer annular wall having a plurality of inwardly extending thread segments each having a plurality of threads, the thread segments being circumferentially spaced by non-threaded portions, a circumferential length of each non-threaded portion being similar to a circumferential length of each thread segment; and   a locking member,   wherein the cover is selectively screwed on to the chime with a fractional turn of the cover and the chime rounded top edge being sealed in the rounded channel and the locking member is insertable through the flange openings to prevent the cover from backing off of the drum.   
   
   
       12 . The shipping and storage drum with a screw on locking cover of  claim 11  wherein the drum chime and the cover each included eight thread segments. 
   
   
       13 . The shipping and storage drum with a screw on locking cover of  claim 1  wherein each drum chime and cover thread segment comprises three threads. 
   
   
       14 . The shipping and storage drum with a screw on locking cover of  claim 11  wherein each chime thread segment comprises a stop for limiting threaded movement of the cover onto the chime. 
   
   
       15 . The shipping and storage drum with a screw on locking cover of  claim 11  wherein the drum flange comprises an opening associated with each thread segment for receiving the locking member. 
   
   
       16 . The shipping and storage drum with a screw on locking cover of  claim 11  wherein the locking member is tethered to the cover. 
   
   
       17 . The shipping and storage drum with a screw on locking cover of  claim 11  wherein the inner annular sidewall comprises a plurality of outwardly extending ribs. 
   
   
       18 . The shipping and storage drum with a screw on locking cover of  claim 11  wherein the chime rounded top edge seals against each of the outer annular sidewall and the inner annular sidewall. 
   
   
       19 . The shipping and storage drum with a screw on locking cover of  claim 11  wherein the threads have about a ¼″ pitch. 
   
   
       20 . The shipping and storage drum with a screw on locking cover of  claim 11  wherein the chime has a diameter of at least about 15 inches.

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