US3861702A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transport cart
Assignee: Banner Metals Inc
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Filing: 1972-11-20
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Granted: 1975-01-21
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Expires: 1992-11-20
Abstract
Abstract An improved vehicle is provided in the form of a wheeled transport cart which may be towed in a train of similar carts for transporting groceries, or other commodities, around a warehouse, or the like. The transport cart of the invention is constructed with a hinged bottom which may be turned up when the cart is empty to permit the cart to be nested with similar carts when not in use so as to conserve space. When the bottom is turned down to receive a load, one of the wheels or casters is locked in a particular angular position to prevent the cart from zig-zaging or drifting when it is towed.
Inventors
- 👤 James D Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:04
CPC Classifications
B; B62; B62B; B62B3/00; B62B3/14; B62B3/18; B62B3/184; B62B3/186; B62B2301/00; B62B2301/04; B62B2301/046; B62B2301/0463
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
100 words
A transport cart comprising: a lower frame member; a plurality of casters swivelly suspended from said bottom frame member about respective vertical swivel axes; a bottom mounted on said lower frame member and having a hinged section adapted to be turned to a down position and to an up position; pin means positioned on said lower frame to be engaged by said bottom and being moved thereby into engagement with at least one of said casters to lock said caster in a pre-determined angular position with respect to its vetical swivel axis when the bottom is in its down position.
Claim 2
Dependent Claim
100 words
A transport cart comprising: a lower frame member; a plurality of casters swivelly suspended from said bottom frame member about respective vertical swivel axes; a bottom mounted on said lower frame member and having a hinged section adapted to be turned to a down position and to an up position; pin means positioned on said lower frame to be engaged by said bottom and being moved thereby into engagement with at least one of said casters to lock said caster in a pre-determined angular position with respect to its vetical swivel axis when the bottom is in its down position.
Claim 3
Dependent Claim
66 words
The transport cart defined in claim 1 and which includes spring means coupled to said pin for biasing said pin to a disengaged position with respect to said caster; and a post mounted on said bottom in position to engage said pin and move said pin against the bias of said spring means into engagement with said caster when said bottom is in its down position.
Claim 4
Dependent Claim
50 words
The transport cart defined in claim 2 and which includes a horizontal swivel plate affixed to said caster for rotation about the vertical swivel axis thereof, said plate having an aperture for receiving said pin when the plate is turned to a particular angular position about said vertical swivel axis.
Claim 5
Dependent Claim
61 words
The transport cart defined in claim 1 in which said lower frame member has side legs diverging outwardly from one side to the other of the cart and defining an open side; four upright posts attached to the lower frame member; and a plurality of spaced and parallel elongated members extending between the upright posts at each end of the cart.
Claim 6
Dependent Claim
51 words
The cart defined in claim 4 in which said spaced and parallel elongated members are slanted downwardly from the open side of said lower frame member, whereby said transport cart may be nested into a similar transport cart when the bottom of the similar cart is turned to its up position.
Claim 7
Dependent Claim
61 words
The cart defined in claim 4, and which includes a horizontal elongated support bracket attached to an intermediate position on two of said upright posts, and a shelf pivotally mounted on said support bracket, said shelf having a rear slotted section to permit a sliding movement of the shelf on said support bracket when the shelf is in a vertical position.
References Cited (Backward Citations)
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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) | 1978-01-20 | 1978-07-22 | 1979-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-20 | 1982-07-22 | 1983-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-20 | 1986-07-22 | 1987-01-21 | $7700.00 | Window Closed / Lapsed |