Patent US4726616A successfully refreshed from Google Patents.
US4726616A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dumpster-type trash container
Assignee: Individual
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Filing: 1986-06-16
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Granted: 1988-02-23
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Expires: 2006-06-16
Abstract
Abstract A dumpster-type trash container is disclosed in which the bottom wall and the lower portion of the side walls are formed of a heavier gauge material to eliminate premature corrosion failures. In the illustrated embodiment, the lower portions of the side walls that are formed of a heavier material are inclined up from the bottom wall to a junction with the side walls above the level of liquid normally contained within the dumpster. The vertical corners are also inclined to reduce the tendency for trash to stick within the container when it is inverted for dumping. Further, the fork receiving sleeves are flared at their forward ends to provide reinforced camming surfaces to guide the forks into the sleeves and to protect the dumpster from damaging impact with the forks. The covers are provided with a latching system to retain the covers in a fully opened position to prevent accidental closure and damage to users. Such latching system is automatically released when the dumpster is inverted for dumping and remains in its released position as the dumpster is returned to its normal upright position. Two different size dumpsters are also disclosed in which the smaller dumpster can be nested within a larger dumpster for more efficient shipping.
Inventors
- 👤 Phillip M. Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:10
CPC Classifications
B; B65; B65F; B65F1/00; B65F1/14; B65F1/16; B65F1/12; B65F1/122; B65F2001/1653; B65F2001/1669; B65F2220/00; B65F2220/12
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
176 words
A trash container comprising a bottom wall, a pair of opposed side walls, and a pair of end walls cooperating to define a container for trash, support means for supporting said dumpster during removal of trash therefrom, said bottom wall and the lower portion of said side walls and end walls being formed of metal having a first thickness and the upper portions of said side walls and end walls being formed of metal having a second thickness substantially less than said first thickness, said metal of said bottom and side walls tending to corrode over time when exposed to rainwater and other liquids present in trash, said lower portions of said side walls and end walls having a height greater than the depth of standing liquids normally present in said container, said upper portions of said side walls normally being spaced above standing liquids in said container, said second thickness less than said first thickness reducing the amount of metal in said container and the weight thereof without reducing the corrosion resistance of said container.
Claim 2
Dependent Claim
176 words
A trash container comprising a bottom wall, a pair of opposed side walls, and a pair of end walls cooperating to define a container for trash, support means for supporting said dumpster during removal of trash therefrom, said bottom wall and the lower portion of said side walls and end walls being formed of metal having a first thickness and the upper portions of said side walls and end walls being formed of metal having a second thickness substantially less than said first thickness, said metal of said bottom and side walls tending to corrode over time when exposed to rainwater and other liquids present in trash, said lower portions of said side walls and end walls having a height greater than the depth of standing liquids normally present in said container, said upper portions of said side walls normally being spaced above standing liquids in said container, said second thickness less than said first thickness reducing the amount of metal in said container and the weight thereof without reducing the corrosion resistance of said container.
Claim 3
Dependent Claim
33 words
A trash container as set forth in claim 1, wherein said bottom wall in inclined up to said side and end walls to provide said lower portion of said side and end walls.
Claim 4
Dependent Claim
57 words
A trash container as set forth in claim 1, wherein one of said end walls is a front wall and the other is a back wall, said front wall and side walls being connected by an angled portion reducing the tendency for trash to remain in the forward corners of said container when said container is emptied.
Claim 5
Dependent Claim
69 words
A trash container as set forth in claim 3, wherein said bottom wall is inclined up to said side and end walls by inclined portions and said support means are sleeves extending along walls of said container adapted to receive lift forks, said sleeves being flared at their forward end along an associated of said angled portions to provide a camming surface operable to cam forks into said sleeves.
Claim 6
Dependent Claim
51 words
A trash container as set forth in claim 3, wherein said support means are sleeves extending along said side walls adapted to receive lift forks, and said sleeves are flared inwardly at their forward ends along said angled portion to provide lateral camming surfaces operable to cam forks into said sleeves.
Claim 7
Dependent Claim
41 words
A trash container as set forth in claim 5, wherein said forward ends of said sleeves are flared vertically to provide vertical camming surfaces to cam forks into said sleeves, the remainder of said sleeves providing a substantially uniform cross section.
Claim 8
Dependent Claim
33 words
A trash container as set forth in claim 6, wherein said lateral camming surfaces and vertical camming surfaces are provided by metal plates of substantially greater thickness than the remainder of said sleeves.
Claim 9
Dependent Claim
59 words
A trash container as set forth in claim 7, wherein said side and end walls cooperate to define an opening through which trash is inserted and removed from said container, and covers are pivotally mounted to close said opening in a closed position and are pivotal to an open position for insertion and removal of trash from said container.
Claim 10
Dependent Claim
38 words
A trash container as set forth in claim 8, wherein said rearward wall provides a portion inclined forwardly to said opening so that said opening has a front-to-back dimension substantially less than the front-to-back dimension of said container.
Claim 11
Dependent Claim
27 words
A trash container as set forth in claim 9 having a capacity of substantially 6 to 8 cubic yards and a height less than about 5 feet.
Claim 12
Dependent Claim
121 words
A trash container having a capacity of about 6 to 8 cubic yards and a height of less than about 5 feet, and a front-to-back dimension of more than about 72 inches, comprising a bottom, a pair of side walls and front and back walls cooperating to define said container, said walls cooperating to define an opening through which trash is placed in said container, said container providing support means consisting of similar but opposite sleeves extending along said side walls, said sleeves being adapted to receive lift forks for inverting said container, said rearward wall providing a portion inclined forwardly to said opening so that said opening has a front-to-back dimension substantially less than the front-to-back dimension of said container.
Claim 13
Dependent Claim
121 words
A trash container having a capacity of about 6 to 8 cubic yards and a height of less than about 5 feet, and a front-to-back dimension of more than about 72 inches, comprising a bottom, a pair of side walls and front and back walls cooperating to define said container, said walls cooperating to define an opening through which trash is placed in said container, said container providing support means consisting of similar but opposite sleeves extending along said side walls, said sleeves being adapted to receive lift forks for inverting said container, said rearward wall providing a portion inclined forwardly to said opening so that said opening has a front-to-back dimension substantially less than the front-to-back dimension of said container.
Claim 14
Dependent Claim
81 words
A trash container as set forth in claim 11, wherein said container is formed of metal which tends to corrode over a period of time, and said bottom and lower portions of said side walls and end walls are of substantially greater thickness than the upper portions of said side walls and end walls, whereby said container provides improved corrosion resistance without requiring the increased weight and metal content that would result from increased wall thickness along said upper portions thereof.
Claim 15
Dependent Claim
33 words
A trash container as set forth in claim 12, wherein said bottom wall is inclined up to said side and end walls to provide said lower portion of said side and end walls.
Claim 16
Dependent Claim
41 words
A trash container as set forth in claim 13, wherein said front wall and side walls are connected by an angled portion reducing the tendency for trash to remain in the forward corners of said container when said container is emptied.
Claim 17
Dependent Claim
40 words
A trash container as set forth in claim 14, wherein said support sleeves extending along side walls are flared inwardly at their forward ends along said angled portion to provide lateral camming surfaces operable to cam forks into said sleeves.
Claim 18
Dependent Claim
40 words
A trash container as set forth in claim 15, wherein forward ends of said sleeves are flared vertically to provide vertical camming surfaces to cam forks into said sleeves, the remainder of said sleeves providing a substantially uniform cross section.
Claim 19
Dependent Claim
31 words
A trash container as set forth in claim 16, wherein said lateral and vertical camming surfaces are provided by metal plates of substantially greater thickness than the remainder of said sleeves.
Claim 20
Dependent Claim
41 words
A trash container as set forth in claim 17, wherein said sleeves provide a reinforcing plate extending inwardly along said angled portions and beyond said front wall to provide a rib protecting and reinforcing said front wall adjacent to said sleeve.
Claim 21
Dependent Claim
117 words
A trash container comprising a bottom, a pair of side walls, and Front and back walls cooperating to define said container, said walls cooperating to define an opening through which trash is placed in said container, said container providing support means consisting of similar but opposite sleeves extending along said side walls to receive lift forks for inverting said container, said side walls joined to said front wall by said angled portion, said sleeves flared vertically and inwardly at their forward end along said angled portion to provide vertical and lateral camming surfaces to cam forks into said sleeves, said camming surfaces provided by interconnected metal plates of substantially greater thickness than the remainder of said sleeves.
Claim 22
Dependent Claim
117 words
A trash container comprising a bottom, a pair of side walls, and Front and back walls cooperating to define said container, said walls cooperating to define an opening through which trash is placed in said container, said container providing support means consisting of similar but opposite sleeves extending along said side walls to receive lift forks for inverting said container, said side walls joined to said front wall by said angled portion, said sleeves flared vertically and inwardly at their forward end along said angled portion to provide vertical and lateral camming surfaces to cam forks into said sleeves, said camming surfaces provided by interconnected metal plates of substantially greater thickness than the remainder of said sleeves.
Claim 23
Dependent Claim
107 words
A trash container comprising a bottom, a pair of side walls, and front and back walls cooperating to define said container, said walls cooperating to define an opening through which trash is placed in said container, said container providing support means consisting of similar but opposite sleeves extending along said side walls to receive lift forks for inverting said container, said sleeves supported at said rearward end by triangular gusset plates joined to said rearward end of said sleeve and said side wall, and a strap extending along and joined to the adjacent portion of said sleeve between the gussets and along a portion of said gussets.
Claim 24
Dependent Claim
107 words
A trash container comprising a bottom, a pair of side walls, and front and back walls cooperating to define said container, said walls cooperating to define an opening through which trash is placed in said container, said container providing support means consisting of similar but opposite sleeves extending along said side walls to receive lift forks for inverting said container, said sleeves supported at said rearward end by triangular gusset plates joined to said rearward end of said sleeve and said side wall, and a strap extending along and joined to the adjacent portion of said sleeve between the gussets and along a portion of said gussets.
Claim 25
Dependent Claim
157 words
A pair of trash containers comprising a first generally rectangular container having a predetermined capacity, a second generally rectangular container having a smaller capacity, said first container providing an opening having a front-to-back dimension less than the front-to-back dimension of said first container and a top wall portion closing said container between one end and said opening, both of said containers providing sleeves along their sides adapted to receive lift forks, said first container having an inside front-to-back dimension greater than the overall outside side-to-side dimension of said second container, said second container having an overall outside front-to-back dimension less than the inside side-to-side dimension of said first container, said second container being sized to fit sideways through said opening of said first container to a nested position within said first container, said second container in said nested position extending beyond said opening in said first container and below said top wall portion of said first container.
Claim 26
Dependent Claim
157 words
A pair of trash containers comprising a first generally rectangular container having a predetermined capacity, a second generally rectangular container having a smaller capacity, said first container providing an opening having a front-to-back dimension less than the front-to-back dimension of said first container and a top wall portion closing said container between one end and said opening, both of said containers providing sleeves along their sides adapted to receive lift forks, said first container having an inside front-to-back dimension greater than the overall outside side-to-side dimension of said second container, said second container having an overall outside front-to-back dimension less than the inside side-to-side dimension of said first container, said second container being sized to fit sideways through said opening of said first container to a nested position within said first container, said second container in said nested position extending beyond said opening in said first container and below said top wall portion of said first container.
Claim 27
Dependent Claim
37 words
A pair of trash containers as set Forth in claim 21, wherein said first container has a capacity of about 6 to 8 cubic yards and said second container has a capacity of about 4 cubic yards.
Claim 28
Dependent Claim
103 words
A trash container comprising a container body providing an opening through which trash is placed in and removed from said container body, cover means pivoted along one side of said opening between a fully opened position and a closed position, latch means operable to retain said cover means in said fully opened position when said container is upright, said latch means automatically releasing when said container is inverted to dump trash therefrom and remaining released as the container is returned to said upright position so that said cover means are in said closed position when said container is returned to said upright position.
Claim 29
Dependent Claim
103 words
A trash container comprising a container body providing an opening through which trash is placed in and removed from said container body, cover means pivoted along one side of said opening between a fully opened position and a closed position, latch means operable to retain said cover means in said fully opened position when said container is upright, said latch means automatically releasing when said container is inverted to dump trash therefrom and remaining released as the container is returned to said upright position so that said cover means are in said closed position when said container is returned to said upright position.
Claim 30
Dependent Claim
50 words
A trash container as set forth in claim 23, wherein said latch means includes a pivot rod positioned within an elongated opening, said pivot rod normally being located in a first position within said elongated opening and moving from said first position when said latch means are latched and released.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-02-22 | 1991-08-24 | 1992-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-02-22 | 1995-08-24 | 1996-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-02-22 | 1999-08-24 | 2000-02-23 | $7700.00 | Window Closed / Lapsed |