US2006108371A1PendingUtilityA1

Blow-molded drum

51
Individually held — no corporate assignee on recordPriority: Apr 18, 2004Filed: Apr 17, 2005Published: May 25, 2006
Est. expiryApr 18, 2024(expired)· nominal 20-yr term from priority
Inventors:Barry L. RauworthJohn M. HennenThomas WhalenDale Maenke
B65D 7/00B65D 7/34B65D 1/20B65D 1/16
51
PatentIndex Score
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Claims

Abstract

A molded drum having a first end with an access opening defined thereon and a second end generally opposed the first end, and a peripheral wall extending between the first end and second end, the first end, second end, and peripheral wall generally defining a drum interior. The drum further having a chime extending from the first end of the drum, the chime including a base section having a chime transition portion and an upper section extending from the base section, the base section having a base thickness greater than a thickness of the upper section, such that a bending region is defined proximate an intersection of the base and upper sections. The chime having a bending length that is defined between a top edge of the chime and the bending region, the bending length being selected such that the bending length is less than a distance between the chime and the access opening.

Claims

exact text as granted — not AI-modified
1 . A molded drum comprising: 
 a first end having an access opening defined thereon and a second end generally opposed the first end;    a peripheral wall extending between the first end and second end, the first end, second end, and peripheral wall generally defining a drum interior;    a chime extending from the first end of the drum, the chime comprising a base section having a chime transition portion and an upper section extending from the base section, the base section having a base thickness greater than a thickness of the upper section, such that a bending region is defined proximate an intersection of the base and upper sections; and    a bending length defined between a top edge of the chime and the bending region, the bending length selected such that the bending length is less than a distance between the chime and the access opening.    
   
   
       2 . The drum of  claim 1 , wherein the bending length is generally uniform around a circumference of the chime.  
   
   
       3 . The drum of  claim 1 , wherein the distance between the chime and the access opening varies along the chime and the bending length is greater at positions along the chime where the chime is furthest from the access opening than positions where the chime is closest to the access opening.  
   
   
       4 . The drum of  claim 1 , wherein a base length is defined between the bending region and the first end of the drum, the base length being greater than the bending length.  
   
   
       5 . The drum of  claim 1 , wherein the chime transition comprises a chime transition surface and the upper section comprises an inner surface generally at an angle to the chime transition surface, such that the chime transition surface is at a maximum transition length and the inner surface at a minimum upper length at a first position along the chime at which the chime is closest to the access opening, and the chime transition surface is at a minimum transition length and the inner surface at a maximum upper length at a second position along the chime at which the chime is the furthest from the access opening.  
   
   
       6 . The drum of  claim 1 , wherein the drum is constructed of blow-molded high-density polyethylene.  
   
   
       7 . The drum of  claim 1 , further comprising a handle portion defined on the second end.  
   
   
       8 . The drum of  claim 1 , wherein the first end further comprises a bung having a bung height and the chime comprises a chime height, such that the chime height is greater than the bung height.  
   
   
       9 . A molded drum comprising: 
 a first end having an access opening defined thereon and a second end generally opposed the first end;    a peripheral wall extending between the first end and second end, the first end, second end, and peripheral wall generally defining a drum interior;    a chime extending from the first end of the drum at a juncture, the chime comprising a top edge and a recess intermediate the juncture and top edge, the recess having a recess cross section that is narrower than a cross section of the chime, such that a bending region is defined proximate the recess.    
   
   
       10 . The drum of  claim 9 , wherein a bending length is defined between a top edge of the chime and the bending region and a base length is defined between the bending region and the first end of the drum.  
   
   
       11 . The drum of  claim 10 , wherein the base length is greater than the bending length.  
   
   
       12 . The drum of  claim 9 , wherein the bending length is generally uniform around a circumference of the chime.  
   
   
       13 . The drum of  claim 10 , wherein a distance between the chime and the access opening varies along the chime and the bending length is greater at a first position along the chime at which the chime is furthest from the access opening than a second position along the chime at which the chime is closest to the access opening.  
   
   
       14 . The drum of  claim 10 , wherein the bending length at a distinct point along the chime is selected such that the bending length is less than a distance between the chime and the access opening.  
   
   
       15 . The drum of  claim 9 , wherein the drum is constructed of high-density polyethylene.  
   
   
       16 . The drum of  claim 9 , further comprising a handle portion defined on the second end.  
   
   
       17 . The drum of  claim 9 , wherein the chime comprises an inner surface and an outer surface, the recess defined on the inner surface.  
   
   
       18 . The drum of  claim 9 , wherein the chime comprises an inner surface and an outer surface, the recess defined on the outer surface.  
   
   
       19 . The drum of  claim 9 , wherein the recess is selected from the group consisting of: 
 notches;    grooves;    channels;    perforations;    indentations; or    any combination thereof.    
   
   
       20 . The drum of  claim 9 , further comprising a handle portion defined on the second end.  
   
   
       21 . A blow-molded drum comprising: 
 a top wall and a bottom wall generally opposed the top wall;    a shell extending between the first end and second end, the top wall, bottom wall, and shell generally defining an interior of the drum; and    an anchor defined on the first end, such that a closure can be operably attached to the anchor by a tether.    
   
   
       22 . The drum of  claim 19 , further comprising a second anchor.  
   
   
       23 . The drum of  claim 20 , further comprising a reinforcing rib defined between the anchor and second anchor.  
   
   
       24 . The drum of  claim 19 , wherein the drum is constructed of high-density polyethylene.  
   
   
       25 . The drum of  claim 19 , further comprising a handle portion defined on the second end.  
   
   
       26 . A method of making a spill-proof drum comprising: 
 molding a drum having a first end having an access opening defined thereon and a second end generally opposed the first end, the drum further comprising a peripheral wall extending between the first end and second end, such that the first end, second end, and peripheral wall generally defining a drum interior for storing the liquid;    integrally molding a chime to extend from the first end of the drum, the chime comprising a base section having a chime transition portion and an upper section extending from the base section, such that a bending region is defined proximate an intersection of the base and upper sections; and    selecting a base length of the base section and an upper length of the upper section to define a bending length between a top edge of the chime and the bending region, the bending length defined so as to be less than a distance between the chime and the access opening.    
   
   
       27 . The method of  claim 26 , further comprising molding the base section to comprise a thickness greater than a thickness of the upper section, such that the bending region is defined by a difference in thickness of the base section and upper section.  
   
   
       28 . The method of  claim 26 , further comprising forming a recess between the base section and upper section, the recess defining a reduced cross-section, such that the bending region is proximate the reduced cross-section.  
   
   
       29 . The method of  claim 26 , further comprising blow molding the drum using high-density polyethylene.  
   
   
       30 . The method of  claim 26 , further comprising molding a handle portion on the second end of the drum.  
   
   
       31 . The method of  claim 26 , further comprising molding an anchor on the first end of the drum.  
   
   
       32 . The method of  claim 31 , further comprising molding a second anchor on the first end of the drum.  
   
   
       33 . The method of  claim 32 , further comprising molding a reinforcing rib on the first end of the drum between the anchor and second anchor.

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