US 11,629,558 B2 · Melting head for ice-melting apparatus

Abstract

The invention relates to a melting head (1) for an ice melting apparatus (1, 8) comprising a rear, in relation to the propagation direction, attachment region (4) for attaching to a drilling apparatus (8) or a drilling rod assembly, and a forward, in relation to the propagation direction, heatable front region (1c), wherein the front region (1c) has a radially outer face region (1a) in which the front region (1c) has an outer cross section that tapers in the propagation direction (3) up to the forward axial melting head end (1d), in particular with a tapering outer diameter, and the radially outer face region (1a) surrounds an inner cavity (5), the free inner cross section of which reduces from the axial melting head end (1d) counter to the propagation direction (3). The invention also relates to an ice melting apparatus (1, 8) formed with the melting head (1).

Claims10

Dependent claims

A melting head of an ice-melting apparatus displaceable in a travel direction extending along a central axis, the melting head comprising:

a rear attachment end for attaching to a drilling string or a drill rod assembly;
and
a heatable front end formed with
an axially forwardly open cavity,
a front edge,
a radially outwardly directed outer surface that decreases in diameter relative to the axis in the travel direction up to the front edge, and
a radially inwardly directed inner surface that surrounds the cavity and whose free inner cross-sectional area decreases from the front edge counter to the travel direction, areas of the inner surface and the outer surface being equal to each other and areas of axial projections of the inner surface and outer surface also being equal to each other.

4 more elements

Dependencies are inferred from the claim text.

Melting head for ice-melting apparatus

Life of this patent

Melting head for ice-melting apparatus

Life of this patent

Abstract

Claims10