US Pat. No. 9,897,126

SEALING PLUG FOR CLOSING HOLES IN WALLS AND THE LIKE

HEGAIN 2100 CONSULTING S....

1. A sealing plug for closing a hole in a wall, the hole in the wall having an inner face, and the wall having an outer contact
surface surrounding the hole in the wall; the sealing plug being of the type comprising:
an elastic body and
a stem coaxially assembled with one another, the stem having a free end emerging out of the elastic body;
said elastic body comprising
a main body which is configured for being expanded radially when pulling on the free end of the stem emerging out of the elastic
body, thus exerting a radial closing pressure (p) on the inner face of the hole to be plugged, and

a head attached to the main body, said head being configured for being compressed and for hermetic sealing and exerting an
axial closing pressure (P) on the outer contact surface of the wall surrounding the hole to be plugged when pulling on the
free end of the stem, the head comprising a compressive strength less than that of the main body such that at least part of
said head changes its geometry to adapt to the shape of the outer contact surface of the wall surrounding the hole to be plugged,

the sealing plug also comprising
a first thrust washer arranged close to the opposite end of the area of attachment between said head and the main body and
a second thrust washer arranged on the outer face of the head such that it enables the compression of the plug between said
first and second thrust washers.

US Pat. No. 10,214,923

SEALING PLUG FOR CLOSING HOLES IN WALLS AND THE LIKE

20 EMMA 20 S.L., Aduna (...

1. A plug for closing a hole in a wall that holds a fluid, the wall having an inner surface that defines the hole, the plug comprising:an elastic body having a central axis, a first end, a second end, an inner surface and an outer surface, the inner surface defining at least in part an internal cavity; and
a stem having a first part that resides inside the internal cavity and a second part that resides external to the elastic body protruding from the first end of the elastic body, the first part being operatively coupled to the elastic body so that a pulling on the second part causes the elastic body to axially compress and radially expand to exert a first pressure on the inner surface of the wall that defines the hole when the plug is located inside the hole;
the first end of the elastic body having a through opening that fluidly communicates the internal cavity with the fluid held by the wall so that when the plug is located inside the hole and the elastic body is radially expanded the fluid applies pressure against the inner surface of the elastic body to cause the pressure applied to the inner surface of the wall that defines the hole to be greater than the first pressure.

US Pat. No. 10,267,051

FORMWORK TUBE

20 EMMA 20 S.L., Aduna (...

1. A formwork tube suitable for housing a tie rod that is used to fasten a first formwork to a second formwork, the formwork tube comprising:a first tubular portion having a first end, a second end and a first conical section, the first conical section having a first end portion with a first diameter and a second end portion with a second diameter that is larger than the first diameter, an end of the second end portion of the first conical section being configured to support an inner wall of the first formwork, the first tubular portion including a first segment having a first end adjacent the first end portion of the first conical section and a second end, the first segment and the first conical section comprising a single part, the end of the second end portion of the first conical section constituting the first end of the first tubular portion and the second end of the first segment constituting the second end of the first tubular portion; and
a second tubular portion having a first end, a second end and a second conical section, the second conical section having a first end portion with a first diameter and a second end portion with a second diameter that is larger than the first diameter, an end of the second end portion of the second conical section being configured to support an inner wall of the second formwork, the second tubular portion including a second segment having a first end adjacent to the first end portion of the second conical section and a second end, the second segment and the second conical section comprising a single part, the end of the second end portion of the second conical section constituting the first end of the second tubular portion and the second end of the second segment constituting the second end of the second tubular portion, the second end of the first tubular portion capable of being coupled to the second end of the second tubular portion so that no gap exists between the respective second ends and in a manner that enables the second ends to be decoupled from one another, the second ends of the first and second tubular portions are configured to be coupled to one another by a protrusion of the first tubular portion being housed inside the second tubular portion so that the first and second tubular portions abut one another along a partitioning plane from which the protrusion projects, the partitioning plane being located a distance away from the first end portion of each of the first and second conical sections, the first and second tubular portions being axially aligned when coupled together, when coupled together the second ends of the first and second tubular portions are capable of being decoupled by an axial pulling of the first conical section in a first direction and an axially pulling of the second conical section in a second direction opposite the first direction.