E21D15/30

Mine roof support, pre-installation assembly for same, and method of installation
11136887 · 2021-10-05 · ·

A mine roof support comprises two or more frusto-conical, tubular sections, the sections each flared outwardly from an upper end to a lower end thereof, a skirt portion of a section being received and secured within a neck portion of a section below in a frictional fit to define a continuous, interior volume of the mine roof support. A continuous, solid, compressible, load-bearing material is located within the interior volume. An uppermost section is closed at an upper end thereof, and a lowermost section is closed at a lower end thereof. Methods of installing a mine roof support and a pre-installation assembly for a mine roof support are also disclosed.

Mine roof support, pre-installation assembly for same, and method of installation
11136887 · 2021-10-05 · ·

A mine roof support comprises two or more frusto-conical, tubular sections, the sections each flared outwardly from an upper end to a lower end thereof, a skirt portion of a section being received and secured within a neck portion of a section below in a frictional fit to define a continuous, interior volume of the mine roof support. A continuous, solid, compressible, load-bearing material is located within the interior volume. An uppermost section is closed at an upper end thereof, and a lowermost section is closed at a lower end thereof. Methods of installing a mine roof support and a pre-installation assembly for a mine roof support are also disclosed.

Mine roof support, pre-installation assembly for same, and method of installation

A mine roof support comprises two or more frusto-conical, tubular sections, the sections each flared outwardly from an upper end to a lower end thereof, a skirt portion of a section being received and secured within a neck portion of a section below in a frictional fit to define an interior volume of the mine roof support. A solid, compressible, load-bearing material is located within the volume. Methods of installing a mine roof support and a pre-installation assembly for a mine roof support are also disclosed.

MINE ROOF SUPPORT, PRE-INSTALLATION ASSEMBLY FOR SAME, AND METHOD OF INSTALLATION
20200325776 · 2020-10-15 ·

A mine roof support comprises two or more frusto-conical, tubular sections, the sections each flared outwardly from an upper end to a lower end thereof, a skirt portion of a section being received and secured within a neck portion of a section below in a frictional fit to define a continuous, interior volume of the mine roof support. A continuous, solid, compressible, load-bearing material is located within the interior volume. An uppermost section is closed at an upper end thereof, and a lowermost section is closed at a lower end thereof. Methods of installing a mine roof support and a pre-installation assembly for a mine roof support are also disclosed.

MINE ROOF SUPPORT, PRE-INSTALLATION ASSEMBLY FOR SAME, AND METHOD OF INSTALLATION
20190203597 · 2019-07-04 ·

A mine roof support comprises two or more frusto-conical, tubular sections, the sections each flared outwardly from an upper end to a lower end thereof, a skirt portion of a section being received and secured within a neck portion of a section below in a frictional fit to define an interior volume of the mine roof support. A solid, compressible, load-bearing material is located within the volume. Methods of installing a mine roof support and a pre-installation assembly for a mine roof support are also disclosed.