Patent US4765644A successfully refreshed from Google Patents.
US4765644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foldable cart
Assignee: Individual
•
Filing: 1987-01-20
•
Granted: 1988-08-23
•
Expires: 2007-01-20
Abstract
Abstract A folding cart designed to function as a supporting walker or a stackable grocery cart. The frame consists of two pivoted parts, the shorter pivoted at its upper end to points near the center of the longer, and the longer extending thereabove to form a handle. A foldable strut joins the pivoted parts below their junction. A fabric receptacle is foldably supported from the frame generally above the junction of the two pivoted parts. Suitable wheels or pivoted castors are mounted adjacent the lower ends of the two pivoted parts.
Inventors
- 👤 Laurence G. Bell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:40
CPC Classifications
B; B62; B62B; B62B3/00; B62B3/02; B62B3/027; B62B2205/00; B62B2205/20; B62B2205/24
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
225 words
A foldable cart comprising a first unitary frame member having side members, a lower end member and an upper end member forming a transverse handle and having a first pair of wheel adjacent its lower end member; a second frame member having a lower end member and side members connected at their upper ends to a pair of first pivot points intermediate the upper and lower ends of the side members of said first frame member and having a second pair of wheels at the lower ends of its side members; a pair of collapsible struts joining each of said first and second frame members below said first pair of pivot points; a recpetacle comprising a rectangular fabric bag having sides and front and rear ends and suspended from said frame members by means of a pair of linear trnasverse rods joined to the upper edge of each end of said bag and supported by said frame members; both of said rods being connected to the side members of said first and second frame members by arms connected to the ends of said rods, said arms being connected to the side members of said frame members at second pivot points and the edge of each side of the receptacle being fastened to the side members of said first frame member above said second pivot points.
Claim 2
Dependent Claim
225 words
A foldable cart comprising a first unitary frame member having side members, a lower end member and an upper end member forming a transverse handle and having a first pair of wheel adjacent its lower end member; a second frame member having a lower end member and side members connected at their upper ends to a pair of first pivot points intermediate the upper and lower ends of the side members of said first frame member and having a second pair of wheels at the lower ends of its side members; a pair of collapsible struts joining each of said first and second frame members below said first pair of pivot points; a recpetacle comprising a rectangular fabric bag having sides and front and rear ends and suspended from said frame members by means of a pair of linear trnasverse rods joined to the upper edge of each end of said bag and supported by said frame members; both of said rods being connected to the side members of said first and second frame members by arms connected to the ends of said rods, said arms being connected to the side members of said frame members at second pivot points and the edge of each side of the receptacle being fastened to the side members of said first frame member above said second pivot points.
Claim 3
Dependent Claim
23 words
A foldable cart as claimed in claim 1 wherein said first frame member lower end member extends beyond said first pair of wheels.
Claim 4
Dependent Claim
17 words
A foldable cart as claimed in claim 1 wherein said first pair of wheels are pivotally mounted.
Claim 5
Dependent Claim
33 words
A foldable cart as claimed in clam 1 wherein the lower end member of said second frame member is fixed between said side members a substantial distance above said second pair of wheels.
Claim 6
Dependent Claim
71 words
A foldable cart is claimed in claim 1 wherein both of said rods are connected to the side members of said first and second frame members by arms connected to the ends of said rods and pivotally connected to the side members of said frame members and wherein the edge of each side of the receptacle is fastened to the side members of said first frame member above said pivot points.
Claim 7
Dependent Claim
29 words
A foldable cart as claimed in claim 1 wherein said handle is substantially vertically above the axis of said second pair of wheels when in its normal operating position.
Claim 8
Dependent Claim
45 words
A foldable cart as claimed in claim 1 wherein said second pair of wheels are further apart than said first pair of wheels so that when said cart is in its folded position said first pair of wheels nest between said second pair of wheels.
Claim 9
Dependent Claim
33 words
A foldable cart as claimed in claim 1 wherein the lower end member of said first member and said first pair of wheels serve to stabley support said cart in its folded position.
Claim 10
Dependent Claim
306 words
A foldable cart comprising: a first unitary frame member having side members, a lower end member and an upper end member, forming a transverse handle and having a first pair of wheels adjacent its lower end member; a second frame member having a lower end member and side members connected at their upper ends to a pair of pivot points intermediate the upper and lower ends of the side members of said first frame member and having a second pair of wheels at the lower ends of its side members; a pair of collapsible struts joining each side member of said first and second frame members below said pivot points; a receptacle comprising a rectangular fabric bag having sides and front and rear ends and suspended from said frame members solely by means of a pair of linear transverse rods joined to the upper edge of each end of said bag and supported by said frame members; at least one of said rods being connected to the side members of one of said frame members by arms connected to each end of said one rod and pivotally connected to the side members of said one frame member; wherein said handle is substantially vertically above the axis of said second pair of wheels when in its normal operating position; and including a pair of detents on the side members of said first frame member on the upper surface of said side members each detect being positioned at a point on the side member a distance below the transverse handle of said first frame member to coincide with the position of the handle of a nested folded cart and having a rearwardly curved surface shaped to conform to the cross-section of the handle of said nested folded cart and so retain the folded cart in its nested position.
Claim 11
Dependent Claim
306 words
A foldable cart comprising: a first unitary frame member having side members, a lower end member and an upper end member, forming a transverse handle and having a first pair of wheels adjacent its lower end member; a second frame member having a lower end member and side members connected at their upper ends to a pair of pivot points intermediate the upper and lower ends of the side members of said first frame member and having a second pair of wheels at the lower ends of its side members; a pair of collapsible struts joining each side member of said first and second frame members below said pivot points; a receptacle comprising a rectangular fabric bag having sides and front and rear ends and suspended from said frame members solely by means of a pair of linear transverse rods joined to the upper edge of each end of said bag and supported by said frame members; at least one of said rods being connected to the side members of one of said frame members by arms connected to each end of said one rod and pivotally connected to the side members of said one frame member; wherein said handle is substantially vertically above the axis of said second pair of wheels when in its normal operating position; and including a pair of detents on the side members of said first frame member on the upper surface of said side members each detect being positioned at a point on the side member a distance below the transverse handle of said first frame member to coincide with the position of the handle of a nested folded cart and having a rearwardly curved surface shaped to conform to the cross-section of the handle of said nested folded cart and so retain the folded cart in its nested position.
References Cited (Backward Citations)
US174597A
Cited
US220214A
Cited
CA515583A
Cited
FR335942A
Cited
US1718851A
Cited
US2467900A
Cited
US3194577A
Cited
US3337230A
Cited
FR1488375A
Cited
DE2822944A1
Cited
US4222585A
Cited
US4473234A
Cited
US4478427A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-08-23 | 1992-02-22 | 1992-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-23 | 1996-02-22 | 1996-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-23 | 2000-02-22 | 2000-08-23 | $7700.00 | Window Closed / Lapsed |