# US 11,305,803 B2 · Mobile anchor cart > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,305,803 B2 - Document ID: US11305803B2 - Status: Granted - Kind: B2 - Application number: 17/386,633 - Filed: 2021-07-28 - Published: 2021-11-18 - Granted: 2022-04-19 - Earliest claimed: 2019-07-12 - Applicants: Charles J. MacKarvich - Inventors: Charles J. MacKarvich - Web page: https://patentgrep.com/patent/US11305803B2 ## CPC - B62B 5/049: {locking against movement by contacting the floor or a wall} - A62B 35/0068: {Anchors} - B62B 1/008: {having a prop or stand for maintaining position} - B62B 1/10: in which the load is intended to be transferred totally to the wheels - B62B 1/18: in which the load is disposed between the wheel axis and the handles, e.g. wheelbarrows - E04G 21/3276: {Arrangements on buildings for connecting safety-lines (fastening devices for devices for lowering persons from buildings A62B1/04)} - B62B 2202/10: Heavy objects, e.g. ISO-containers - B62B: HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES (characterised by animal propulsion B62C; propulsion of sledges by driver or engine B62M) - A62B: DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING (valves specially adapted for medical use A61M39/00; life-saving devices, apparatus or methods specially adapted for use in water B63C9/00; divers' equipment B63C11/00; specially adopted for use with aircraft, e.g. parachutes, ejector seats, {B64D17/00, B64D25/10}; rescue devices peculiar to mining E21F11/00) - E04G: SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS ## Abstract A method for using a mobile anchor cart assembly can include repositioning the mobile anchor cart assembly from an anchored position to a mobile position on a ground surface, mobile anchor cart assembly including a cart, the cart including a frame resting upon the ground surface in the anchored position, the frame clearing the ground surface in the mobile position; and an axle assembly mounted to the frame, the axle assembly clearing the ground surface in the anchored position, the axle assembly contacting the ground surface in the mobile position; and a load defining a load center of gravity, the load center of gravity being vertically aligned over at least a portion of the axle assembly in the anchored position; and rolling the mobile anchor cart assembly along the ground surface with the axle assembly. ## Claims ### Claim 1 A method for using a mobile anchor cart assembly, the method comprising: repositioning the mobile anchor cart assembly from an anchored position to a mobile position on a ground surface, the mobile anchor cart assembly comprising: a cart, the cart comprising: a frame resting upon the ground surface in the anchored position, the frame clearing the ground surface in the mobile position; and an axle assembly mounted to the frame, the axle assembly clearing the ground surface in the anchored position, the axle assembly contacting the ground surface in the mobile position; and a load defining a load center of gravity, the load center of gravity being vertically aligned over at least a portion of the axle assembly in the anchored position; and rolling the mobile anchor cart assembly along the ground surface with the axle assembly. ### Claim 2 (depends on 1) The method of claim 1, wherein a tire of the axle assembly contacts the ground surface in the mobile position. ### Claim 3 (depends on 1) The method of claim 1, wherein the load center of gravity is vertically aligned over a tire of the axle assembly in the anchored position. ### Claim 4 (depends on 1) The method of claim 1, wherein the frame defines a front side and a rear side, and wherein the axle assembly is mounted to the front side of the frame. ### Claim 5 (depends on 4) The method of claim 4, wherein the frame comprises a weight rack attached to the front side, and wherein the load is supported by the weight rack. ### Claim 6 (depends on 4) The method of claim 4, wherein the load center of gravity biases the cart towards a transition position wherein the front side and the axle assembly contact the ground surface and the rear side clears the ground surface. ### Claim 7 (depends on 4) The method of claim 4, wherein repositioning the cart of the mobile anchor cart assembly from the anchored position to the mobile position on the ground surface comprises: repositioning the cart of the mobile anchor cart assembly from the anchored position to a transition position, the axle assembly and the front side contacting the ground surface in the transition position, the rear side clearing the ground surface in the transition position; and repositioning the cart from the transition position to the mobile position. ### Claim 8 (depends on 1) The method of claim 1, wherein the frame defines a foot plane, and wherein the axle assembly is positioned above the foot plane. ### Claim 9 (depends on 1) The method of claim 1, wherein the frame comprises at least one foot, and wherein the at least one foot rests on the ground surface in the anchored position. ### Claim 10 (depends on 1) The method of claim 1, wherein a position of an assembly center of gravity of the mobile anchor cart assembly biases the cart towards the anchored position. ### Claim 11 A cart comprising: a frame configured to rest upon a ground surface when the cart is in an anchored position, the frame configured to clear the ground surface when the cart is in a mobile position, the frame comprising a weight rack; at least one tie-off point attached to the frame; at least one handle extending outward from the frame, the at least one handle configured to selectively position the cart about and between the anchored position and the mobile position; and an axle assembly mounted to the frame, the weight rack configured to support and position a load over the axle assembly with a load center of gravity of the load vertically aligned with the axle assembly. ### Claim 12 (depends on 11) The cart of claim 11, wherein the frame defines a foot plane, and wherein the axle assembly is positioned above the foot plane. ### Claim 13 (depends on 12) The cart of claim 12, wherein the frame comprises at least one foot, and where the at least one foot defines the foot plane. ### Claim 14 (depends on 11) The cart of claim 11, wherein the weight rack is attached to a front side of the frame, and wherein the axle assembly is attached to the front side of the frame. ### Claim 15 (depends on 11) The cart of claim 11, wherein the frame comprises at least one foot, wherein the at least one foot is configured to rest upon the ground surface when the cart is in the anchored position, and wherein the at least one foot is configured to clear the ground surface when the cart is in the mobile position. ### Claim 16 A mobile anchor cart assembly comprising: a cart comprising: a frame, the frame configured to rest upon a ground surface when the cart is in an anchored position, the frame configured to clear the ground surface when the cart is in a mobile position; at least one handle extending outward from the frame, the at least one handle configured to selectively position the cart about and between the anchored position and the mobile position; and an axle assembly mounted on the frame opposite from the at least one handle; and a load defining a load center of gravity, the load center of gravity being vertically aligned with the axle assembly when the cart is in the anchored position. ### Claim 17 (depends on 16) The mobile anchor cart assembly of claim 16, wherein the frame comprises at least one foot, wherein the at least one foot is configured to rest upon the ground surface when the cart is in the anchored position, and wherein the at least one foot is configured to clear the ground surface when the cart is in the mobile position. ### Claim 18 (depends on 17) The mobile anchor cart assembly of claim 17, the at least one foot defines a foot plane, and wherein the axle assembly is positioned above the foot plane. ### Claim 19 (depends on 18) The mobile anchor cart assembly of claim 18, wherein: the at least one foot comprises a first foot and a second foot; the first foot defines a first foot surface; the second foot defines a second foot surface; and the first foot surface and the second foot surface are coplanar with the foot plane. ### Claim 20 (depends on 16) The mobile anchor cart assembly of claim 16, wherein the cart further comprises as least one tie-off point coupled to the frame.