US3874689A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nestable cart
Assignee: Cornelius Co
•
Filing: 1972-11-06
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Granted: 1975-04-01
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Expires: 1992-11-06
Abstract
Abstract A nestable cart includes a horizontal base of U-shaped configuration to which there is secured a shelf which is pivotable between lowered and upright positions, and a rigid side structure having a U-shaped horizontal cross section rigidly secured to the U-shaped base, the closed end of the U-shaped configuration of the base and side structure being nestable within corresponding elements of another such cart.
Inventors
- 👤 Lawrence M Morgan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:07
CPC Classifications
B; B62; B62B; B62B3/00; B62B3/14; B62B3/18; B62B3/184; B62B3/186
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
128 words
A nestable cart comprising: a. a horizontal base of rigid U-shaped configuration, the legs of the U-shape diverging at the open end of the U-shape, and having a set of wheels secured thereto; b. a shelf hinged to said base by hinge means at the closed end of the U-shape adjacent to said wheels and movable between an upright generally vertical position for nesting and a lowered generally horizontal position for use, said hinge means including hinge elements slotted for holding said shelf in said vertical position; c. means acting between said base and said shelf for supporting said shelf in said lowered position; and d. a vertically extending side structure having a rigid diverging U-shaped horizontal cross-sectional configuration rigidly secured to and directly overlying said U-shaped base.
Claim 2
Dependent Claim
128 words
A nestable cart comprising: a. a horizontal base of rigid U-shaped configuration, the legs of the U-shape diverging at the open end of the U-shape, and having a set of wheels secured thereto; b. a shelf hinged to said base by hinge means at the closed end of the U-shape adjacent to said wheels and movable between an upright generally vertical position for nesting and a lowered generally horizontal position for use, said hinge means including hinge elements slotted for holding said shelf in said vertical position; c. means acting between said base and said shelf for supporting said shelf in said lowered position; and d. a vertically extending side structure having a rigid diverging U-shaped horizontal cross-sectional configuration rigidly secured to and directly overlying said U-shaped base.
Claim 3
Dependent Claim
42 words
A nestable cart according to claim 1 in which said base comprises a pair of coextending joined-together tubes, said side structure being welded to the upper of said tubes and said set of wheels being secured to the lower of said tubes.
Claim 4
Dependent Claim
68 words
A nestable cart according to claim 1 in which said supporting means includes a pair of brackets secured to said base and projecting into the space between the legs and to which two of the wheels are respectively attached, the upper surface of said brackets lying in a plane below the lower surface of said base to enable the base of another cart to extend thereover when nested.
Claim 5
Dependent Claim
64 words
A nestable cart according to claim 1 in which said base includes a horizontal tube secured to the legs of the U-shaped base in spaced relation to the closed end of the U-shape, and to which said shelf is pivoted, and a pair of brackets secured to said horizontal tube and to said closed end, and providing the support for two of the wheels.
Claim 6
Dependent Claim
28 words
A nestable cart according to claim 1, there being an elongated slot in said shelf for receiving the finger of a user during grasping for unloading the cart.
Claim 7
Dependent Claim
26 words
A nestable cart according to claim 1 in which said shelf is rectangular and in its lowered position is disposed Vertically within said diverging rigid base.
Claim 8
Dependent Claim
66 words
A nestable cart according to claim 1 in which said side structure comprises a first tube secured at its ends to said base at the free ends of the legs of the U-shape and extending upwardly therefrom, the central portion of the tube comprising a horizontal U-shape overlying said U-shaped base, and a first number of additional tubes rigidly connected to and joining said U-shapes together.
Claim 9
Dependent Claim
38 words
A nestable cart according to claim 7 which includes a second number of additional tubes of U-shaped configuration rigidly secured at its ends to said first tube and intermediate its ends to said first number of additional tubes.
Claim 10
Dependent Claim
32 words
A nestable cart according to claim 1 in which said base is horizontal and said supporting means holds said shelf so that it slopes downwardly toward the closed end of said base.
Claim 11
Dependent Claim
23 words
A nestable cart according to claim 9 in which said sloping shelf is disposed within the vertical extent of said horizontal U-shaped base.
Claim 12
Dependent Claim
32 words
A nestable cart according to claim 1 including a tow bar having a pivotal connection with the closed end of said U-shaped base and movable between depressed horizontal and raised vertical positions.
Claim 13
Dependent Claim
18 words
A nestable cart according to claim 11 including a spring biasing said tow bar toward the raised position.
Claim 14
Dependent Claim
39 words
A nestable cart according to claim 12 including a downwardly projecting hitch pin secured to the lower side of the lowered shelf opposite the pivotal connection for reception in an opening in the tow bar of a similar cart.
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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) | 1978-03-31 | 1978-09-30 | 1979-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-31 | 1982-09-30 | 1983-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-31 | 1986-09-30 | 1987-04-01 | $7700.00 | Window Closed / Lapsed |