Granted Patent B1

US 12,480,266 · App. 19/292,247 · Granted Nov 25, 2025

Inventor: James Christian Heim (Warwick, NY)

E01D15/124E01D15/127E01D21/10

Abstract

Claims (51)

1 . An apparatus comprising:

an expandable lift device; and

an expandable bridge span;

wherein the expandable lift device is connected to the expandable bridge span;

wherein the expandable lift device is configured to raise the expandable bridge span, while the expandable bridge span is in a compressed state and is substantially aligned with the expandable lift device;

wherein the expandable bridge span is configured to rotate about ninety degrees with respect to the expandable lift device, while the expandable bridge span is in the compressed state;

wherein the expandable bridge span is configured to expand perpendicularly to the expandable lift device;

and further comprising

a first truck with a cargo enclosure; and

wherein when both the expandable bridge span and the expandable lift device are in a compressed state and connected together, both the expandable bridge span and the expandable lift device fit within the cargo enclosure.

2 . The apparatus of claim 1 further comprising

a first staircase; and

wherein the first staircase is configured to be attached to the expandable bridge span, at a first end of the expandable bridge span, when the expandable bridge span is in a first expanded state to allow a human being to walk up the first staircase and then onto a walkway device supported by the expandable bridge span.

3 . The apparatus of claim 1 further comprising

a second truck; and

wherein, in the first expanded state, the expandable bridge span is configured to span from the first truck to the second truck.

4 . The apparatus of claim 3 further comprising

a second staircase; and

wherein the second staircase is configured to be attached to a second end of the expandable bridge span, which is opposite the first end of the expandable bridge span, when the expandable bridge span is in the first expanded state to allow a human being to walk up the first staircase, then onto the walkway device, supported by the expandable bridge span, and then onto the second staircase.

5 . The apparatus of claim 4 wherein

the second staircase, in a compressed state, fits within a cargo enclosure of the second truck.

6 . An apparatus comprising:

an expandable lift device; and

an expandable bridge span;

wherein the expandable lift device is connected to the expandable bridge span;

wherein the expandable lift device is configured to raise the expandable bridge span, while the expandable bridge span is in a compressed state and is substantially aligned with the expandable lift device;

wherein the expandable bridge span is configured to rotate about ninety degrees with respect to the expandable lift device, while the expandable bridge span is in the compressed state;

wherein the expandable bridge span is configured to expand perpendicularly to the expandable lift device; and

further comprising

a first staircase; and

wherein the first staircase is configured to be attached to the expandable bridge span, at a first end of the expandable bridge span, when the expandable bridge span is in a first expanded state to allow a human being to walk up the first staircase and then onto a walkway device supported by the expandable bridge span; and

further comprising

a first truck with a cargo enclosure; and

wherein when both the expandable bridge span and the expandable lift device are in a compressed state and connected together, all of the expandable bridge span, the expandable lift device, and the first staircase in a compressed state, fit within the cargo enclosure of the first truck.

7 . A method comprising

placing an expandable lift device in a compressed state and an expandable bridge span in a compressed state in a cargo enclosure of a first truck;

raising the expandable bridge span while the expandable bridge span is in a compressed state and is substantially aligned with the expandable lift device;

rotating the expandable bridge span about ninety degrees with respect to the expandable lift device, while the expandable bridge span is in the compressed state; and

expanding the expandable bridge span perpendicularly to the expandable lift device.

8 . The method of claim 7 further comprising

attaching a first staircase to the expandable bridge span, at a first end of the expandable bridge span, when the expandable bridge span is in a first expanded state to allow a human being to walk up the first staircase and then onto a walkway device supported by the expandable bridge span.

9 . The method of claim 8 wherein

when both the expandable bridge span and the expandable lift device are in a compressed state and connected together, all of the expandable bridge span, the expandable lift device, and the first staircase in a compressed state, fit within a cargo enclosure of the first truck.

10 . The method of claim 7 further comprising

expanding the expandable bridge span so that it spans from the first the first truck to a second truck.

11 . The method of claim 8 further comprising

expanding the expandable bridge span so that it spans from the first the first truck to a second truck.

12 . The method of claim 11 further comprising

attaching a second stair case to a second end of the expandable bridge span, which is opposite the first end of the expandable bridge span, when the expandable bridge span is in the first expanded state to allow a human being to walk up the first staircase, then onto the walkway device, supported by the expandable bridge span, and then onto the second staircase.

13 . The method of claim 12 wherein

the second staircase, in a compressed state, fits within a cargo enclosure of the second truck.

References Cited (13)