Patent ID: 11879224
Assignee: ROUND SHIELD LLC
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 9:
10. An assembly for shoring temporary surface excavations, the assembly including:
(a) a base unit including:
a base unit wall extending in a height direction from a base unit lower edge to a base unit upper edge and defining a base unit central axis extending in the height direction, the base unit wall also having a base unit wall inner surface defining a volume of the base unit and a base unit wall outer surface facing way from the volume of the base unit, and
(ii) at least two jacking lugs mounted on the base unit and spaced apart about the base unit central axis, each jacking lug including a direct connection to the base unit wall inner surface and extending from the base unit wall inner surface in the volume of the base unit and each jacking lug further including a jack receiver positioned to receive an upper jacking force application element of a respective jacking device aligned to apply a jacking force in a direction from the base unit lower edge to the base unit upper edge, and
(iii) at least two lifting features mounted on the base unit and spaced apart about the base unit central axis, each lifting feature residing within the volume of the base unit and providing a lifting point adapted to accept a lifting force applied from above the base unit upper edge in the height direction, and
(iv) a number of base unit upper connecting elements spaced apart about the base unit central axis;

(b) a first extension unit including:
(i) a first extension unit wall extending in the height direction from a first extension unit lower edge to a first extension unit upper edge and defining a first extension unit central axis extending in the height direction, the first extension unit wall also having a first extension unit wall inner surface defining a volume of the first extension unit and a first extension unit wall outer surface facing way from the volume of the first extension unit, and
(ii) a number of first extension unit lower connecting elements spaced apart at about the first extension unit central axis, each extension unit lower connecting element being aligned with and connected to a respective base unit upper connecting element of the base unit so that the base unit central axis approximately aligns with the first extension unit central axis;

(c) wherein (i) the base unit wall outer surface at each point along the length of base unit wall in the height direction extends along the distance from the base unit lower edge to the base unit upper edge approximately parallel to the base unit central axis, and (ii) the base unit wall outer surface defines the maximum dimension of the base unit along any line that intersects the base unit central axis perpendicular to the base unit central axis, and (iii) the base unit wall defines a barrier to the volume of the base unit in directions transverse to the base unit central axis; and
(d) wherein (i) the first extension unit wall outer surface at each point along the length of the first extension unit wall extends along the distance from the first extension unit lower edge to the first extension unit upper edge approximately parallel to the first extension unit central axis, and (ii) the first extension unit wall outer surface defines the maximum dimension of the first extension unit along any line that intersects the first extension unit central axis perpendicular to the first extension unit central axis, and (iii) the first extension unit wall defines a barrier to the volume of the first extension unit in directions transverse to the first extension unit central axis.