# US 9,775,432 B2 · Collapsible cart and method of assembling

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- Number: US 9,775,432 B2
- Document ID: US9775432B2
- Status: Granted
- Kind: B2
- Application number: 15/295,320
- Filed: 2016-10-17
- Published: 2017-04-20
- Granted: 2017-10-03
- Earliest claimed: 2015-10-16
- Applicants: Phillip Ritter
- Inventors: Phillip Ritter
- Web page: https://patentgrep.com/patent/US9775432B2

## CPC

- A47B 31/04: foldable
- B62B 3/005: {Details of storage means, e.g. drawers, bins or racks}
- B62B 3/022: {folding down the body to the wheel carriage or by retracting projecting parts (collapsible containers B65D, e.g. B65D7/24, B65D9/12, B65D11/18)}
- B62B 5/0433: {foot operated}
- A47B 2031/002: {Catering trolleys}
- A47B 2031/004: {having four vertical uprights}
- B62B 2301/04: comprising a wheel pivotable about a substantially vertical axis, e.g. swivelling castors
- A47B: TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE (furniture jointing F16B)
- B62B: HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES (characterised by animal propulsion B62C; propulsion of sledges by driver or engine B62M)

## Abstract

Technologies are described for a collapsible cart and method of assembly. The cart has a cart base and a removable cart table top. The cart base has a rectangular cart frame and a foldable leg extending from a first side, proximate each corner, of the rectangular cart frame. Each foldable leg is configured to rotate about a first end and to lock into an extended orientation, and to rotate into a folded orientation and become proximate the rectangular cart frame. A clasp assembly is proximate a second end of each of the foldable legs and are configured to clasp arms proximate each corner of the removable cart table top.

## Claims

### Claim 1

A collapsible cart comprising a cart base and a removable cart table top;
the cart base comprising:
a rectangular cart frame;
a foldable leg extending from a first side, proximate each corner, of the rectangular cart frame, each foldable leg being configured to rotate about a first end and to lock into an extended orientation, and to rotate into a folded orientation and become proximate the rectangular cart frame;
a clasp assembly proximate a second end of each of the foldable legs;
a wheel rotatably extending from a second side, proximate each corner, of the rectangular cart frame;
the removable cart table top comprising:
a flat surface on a first side of the removable cart table top; and
a pair of substantially parallel retention members, each retention member longitudinally extends substantially a length of the table top, proximate an edge, each of the retention members having end portions proximate each corner of a second side of the removable cart table top, each retention member being spaced from the second side of table top and having the end portions configured and disposed to cooperate with one of the clasp assemblies and removably hold the table top to the cart base.

### Claim 2 (depends on 1)

The collapsible cart of claim 1, wherein the rectangular cart frame comprises a rectangular perimeter and at least one cross-member.

### Claim 3 (depends on 2)

The collapsible cart of claim 2, wherein the rectangular cart frame is configured to hold at least one storage container.

### Claim 4 (depends on 1)

The collapsible cart of claim 1, wherein each of the wheels comprises a toe kick locking caster.

### Claim 5 (depends on 1)

The collapsible cart of claim 1, wherein each of the legs is joined with an adjacent leg and each of the legs is configured to fold with its joined leg.

### Claim 6 (depends on 1)

The collapsible cart of claim 1, wherein each of the clasp assemblies comprises a lever rotatably attached to each of the legs, each of the levers being configured to pivot and clasp one of the end portions of one of the retention members.

### Claim 7 (depends on 6)

The collapsible cart of claim 6, wherein each of the levers has a first end portion configured to clasp one of the end portions of one of the retention members and a second end portion configured to pivot with the lever by hand and clasp the end portion of the retention member.

### Claim 8 (depends on 7)

The collapsible cart of claim 7, wherein each leg has a lever lock configured and disposed to lock and hold the second end portion of the lever proximate the leg.

### Claim 9 (depends on 1)

The collapsible cart of claim 1, wherein the removable cart table top comprises a pair of substantially parallel side rails, each side rail longitudinally extends substantially a length of the table top, proximate an edge, and is substantially perpendicular to the retention members.

### Claim 10 (depends on 9)

The collapsible cart of claim 9, wherein the side rails are attached to the table top and hold ends of the retention members.

### Claim 11 (depends on 1)

The collapsible cart of claim 1 further comprising a curtain substantially surrounding the cart base.

### Claim 12 (depends on 9)

The collapsible cart of claim 9, wherein each of the side rails is configured for attaching a curtain thereto, the curtain being configured to substantially surround the cart base.