US 6,044,869 A · Injection hose for concrete construction joints

Abstract

An injection hose (1) for concrete construction joints has a substantially liquid-tight base body (2) made of a flexible material such as rubber or plastics that encloses a passage (3). The outer surface (4) of the base body (2) is provided with at least one groove-shaped recess (5) that extends over its whole length. Radial outlets (6) for the liquid injected through the passage (3) are distributed over the length of the recess (5). A strip made of a material that may be compressed under the inner pressure of the injection liquid is received in the recess (5) and covers the outlets (6). A liquid-permeable sheath (8) surrounds the base body (2) and the strip, in the manner of a hose. A single recess (5) extends with a predetermined pitch along a spiral path around the outer surface (4) of the base body (2) or extends parallel to the axis of the passage (3) but has an opening angle of more than 90.degree..

Claims20

Dependent claims

An injection tube (1) for construction joints on concrete buildings comprising:

a basic body (2) comprising a flexible material which is essentially impermeable to liquid, said basic body surrounding a passage channel (3) and having an outer casing surface (4),
at least one groove-like depression (5) extending over the length of the basic body (2), one said depression (5) hectically encircling the outer casing surface (4) of the basic body (2) with a predetermined pitch;
a plurality of radial openings (6) fluidly connecting the passage channel (3) to the depression (5) over the length of the depression (5), said openings providing an outlet for a liquid injected into the passage channel (3);
said depression (5) receiving a strip (7) comprising a material which is compressible under the internal pressure of the injection liquid, said strip (7) covering the openings (6);
and
a covering (8) which is permeable to liquid enclosing the basic body (2) and the strip (7).

3 more elements

Dependencies are inferred from the claim text.

Injection hose for concrete construction joints

Life of this patent

Injection hose for concrete construction joints

Life of this patent

Abstract

Claims20