US4429889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stacking cart
Assignee: Challenge Machinery Co
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Filing: 1982-02-08
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Granted: 1984-02-07
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Expires: 2002-02-08
Abstract
Abstract A stacking cart for paper products, sheet material, or the like, is provided comprising a generally horizontally extending movable stand having four vertically oriented substantially identical, V-shaped troughs disposed thereon. The V-shaped troughs are each formed from a unitary sheet metal part with at least one wedge-shaped vertical flange. A plurality of generally horizontally extending shelves are disposed in the V-shaped troughs and fasteners extending through the vertically oriented flanges on the V-shaped troughs secure the troughs in a back-to-back relationship. Each of the troughs are inclined with respect to a centrally located vertical axis, with the tops of the troughs being disposed inwardly with respect to the bottom of the troughs so that sheets of material disposed on the horizontally extending shelves are gravity biased inwardly toward the centrally located vertical axis.
Inventors
- 👤 Dan P. Westra
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:51
CPC Classifications
B; B65; B65H; B65H31/00; B62; B62B; B62B3/00; B62B3/10
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
185 words
A stacking cart for sheet material comprising: a generally horizontally extending movable stand having a centrally located vertical axis; a plurality of vertically oriented, substantially identical, troughs having first and second sides defining a generally V-shaped cross section, said V-shaped trough being disposed on said stand, said V-shaped troughs being provided with top ends and lower ends; a plurality of generally horizontally extending shelves disposed in said V-shaped troughs; means for mounting said shelves to extend in a direction generally orthogonal to said first and second sidewalls of said V-shaped troughs; means for securing said V-shaped troughs in a back-to-back relationship, each of said V-shaped troughs being disposed in an inclined relationship with respect to said centrally located vertical axis, said top ends of said V-shaped troughs being inwardly disposed relative to said lower ends of said troughs, whereby paper products disposed on said shelves are gravity biased inwardly toward said centrally located axis; and said means for securing said v-shaped troughs in back-to-back relationship comprising at least one vertically oriented flange disposed on one of said first and second sides of said V-shaped troughs.
Claim 2
Dependent Claim
185 words
A stacking cart for sheet material comprising: a generally horizontally extending movable stand having a centrally located vertical axis; a plurality of vertically oriented, substantially identical, troughs having first and second sides defining a generally V-shaped cross section, said V-shaped trough being disposed on said stand, said V-shaped troughs being provided with top ends and lower ends; a plurality of generally horizontally extending shelves disposed in said V-shaped troughs; means for mounting said shelves to extend in a direction generally orthogonal to said first and second sidewalls of said V-shaped troughs; means for securing said V-shaped troughs in a back-to-back relationship, each of said V-shaped troughs being disposed in an inclined relationship with respect to said centrally located vertical axis, said top ends of said V-shaped troughs being inwardly disposed relative to said lower ends of said troughs, whereby paper products disposed on said shelves are gravity biased inwardly toward said centrally located axis; and said means for securing said v-shaped troughs in back-to-back relationship comprising at least one vertically oriented flange disposed on one of said first and second sides of said V-shaped troughs.
Claim 3
Dependent Claim
38 words
The stacking cart of claim 1 wherein said means for securing said V-shaped troughs in back-to-back relationship further comprises a second vertically oriented flange disposed on the other of said first and second sides of said V-shaped trough.
Claim 4
Dependent Claim
32 words
The stacking cart of claim 2 wherein said first and second flanges include means for defining a predetermined angle of inclination for said V-shaped troughs relative to said centrally located vertical axis.
Claim 5
Dependent Claim
38 words
The stacking cart of claim 3 wherein said means for defining a predetermined angle of inclination comprises at least one of said first and second flanges being provided with a wedge-shape, said wedge-shape prescribing said angle of inclination.
Claim 6
Dependent Claim
19 words
The stacking cart of claim 4 wherein said V-shaped troughs are each formed from a unitary sheet metal stamping.
Claim 7
Dependent Claim
28 words
The stacking cart of claim 5 wherein said V-shaped troughs are secured together in back-to-back relationship by fastener means extending through overlapped first and second vertically oriented flanges.
Claim 8
Dependent Claim
22 words
The stacking cart of claim 6 wherein said top ends of said V-shaped troughs are provided with overlapping generally horizontally extending flanges.
Claim 9
Dependent Claim
17 words
The stacking cart of claim 1 wherein said horizontally extending movable stand includes a plurality of casters.
Claim 10
Dependent Claim
18 words
The stacking of claim 1 wherein said horizontally extending movable stand comprises first and second coplanar orthogonal beams.
Claim 11
Dependent Claim
26 words
The stacking cart of claim 1 wherein four of said troughs are provided in a back-to-back relationship each of said V-shaped troughs defining a 90° angle.
Claim 12
Dependent Claim
48 words
The stacking cart of claim 1 wherein said means for mounting said shelves comprises a plurality of tongues disposed on said shelves and a plurality of grooves disposed on said V-shaped troughs for hanging said shelves from said V-shaped troughs in a height adjustable tongue and groove manner.
Claim 13
Dependent Claim
24 words
The stacking cart of claim 1 wherein at least one handle is disposed on said vertically oriented flanges for facilitating manipulation of said cart.
Claim 14
Dependent Claim
167 words
A stacking cart for sheet materials comprising: a generally horizontally extending movable stand having a centrally located vertical axis; four vertically oriented substantially identical troughs having first and second sides defining a generally V-shaped cross section, said V-shaped troughs being disposed in an upright fashion on said stand, said V-shaped troughs being provided with top ends and lower ends, each of said V-shaped troughs being formed from a unitary sheet metal part with at least one wedge-shaped vertically oriented flange; a plurality of generally horizontally extending shelves disposed in said V-shaped troughs; and means for securing said V-shaped troughs in a back-to-back relationship, each of said V-shaped troughs being disposed in an inclined relationship with respect to said centrally located vertical axis, the angle of inclination being defined by said wedge-shaped vertical flanges, said top ends of said V-shaped troughs being inwardly disposed relative to said lower ends of said troughs, whereby paper products disposed on said shelves are gravity biased inwardly toward said centrally located axis.
Claim 15
Dependent Claim
167 words
A stacking cart for sheet materials comprising: a generally horizontally extending movable stand having a centrally located vertical axis; four vertically oriented substantially identical troughs having first and second sides defining a generally V-shaped cross section, said V-shaped troughs being disposed in an upright fashion on said stand, said V-shaped troughs being provided with top ends and lower ends, each of said V-shaped troughs being formed from a unitary sheet metal part with at least one wedge-shaped vertically oriented flange; a plurality of generally horizontally extending shelves disposed in said V-shaped troughs; and means for securing said V-shaped troughs in a back-to-back relationship, each of said V-shaped troughs being disposed in an inclined relationship with respect to said centrally located vertical axis, the angle of inclination being defined by said wedge-shaped vertical flanges, said top ends of said V-shaped troughs being inwardly disposed relative to said lower ends of said troughs, whereby paper products disposed on said shelves are gravity biased inwardly toward said centrally located axis.
Claim 16
Dependent Claim
39 words
The stacking cart of claim 13 wherein each of said V-shaped troughs is provided with one of said wedge-shaped vertically oriented flanges on one side thereof and a second wedge-shaped vertically oriented flange disposed on the other side thereof.
Claim 17
Dependent Claim
17 words
The stacking cart of claim 13 wherein said horizontally extending movable stand includes a plurality of casters.
Claim 18
Dependent Claim
19 words
The stacking cart of claim 13 wherein said horizontally extending movable stand comprises first and second coplanar orthogonal beams.
Claim 19
Dependent Claim
26 words
The stacking cart of claim 13 wherein said four V-shaped troughs are provided with a back-to-back relationship each of said V-shaped troughs defining a 90° angle.
Claim 20
Dependent Claim
24 words
The stacking cart of claim 13 wherein at least one handle is disposed on said vertically oriented flanges for facilitating manipulation of said cart.
Claim 21
Dependent Claim
33 words
The stacking cart of claim 14 wherein said V-shaped troughs are secured together in back-to-back relationship by fastener means extending through overlapped first and second vertically oriented flanges disposed on adjacent V-shaped troughs.
Claim 22
Dependent Claim
22 words
The stacking cart of claim 19 wherein said top ends of said V-shaped troughs are provided with overlapping generally horizontally extending flanges.
Claim 23
Dependent Claim
49 words
The stacking cart of claim 13 wherein means for mounting said shelves is provided comprising a plurality of tongues disposed on said shelves and a plurality of grooves disposed on said V-shaped troughs for hanging said shelves from said V-shaped troughs in a height adjustable tongue and groove manner.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-02-06 | 1987-08-08 | 1988-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-02-06 | 1991-08-08 | 1992-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-02-06 | 1995-08-08 | 1996-02-07 | $7700.00 | Window Closed / Lapsed |