| 摘要 |
1,184,191. Mixing liquids. HILTI A.G. 14 March, 1967 [5 April, 1966], No. 11878/67. Heading B1C. [Also in Divisions B3, E2, F1 and F2] In a method of adhesively attaching a fastening element to a foundation by an adhesive comprising two or more components, the element has a recess for the adhesive into which the components are injected concurrently with mixing them in a mixirig zone in the fastening element. Fig. 4a shows a fastening element 45 having a screw thread 46, an adhesive recess 47 and inlet apertures 49 for the adhesive components; ribs 48 in the recess effect mixing when the element is rotated. In a modification, Fig. 1 (not shown) the element incorporates a labyrinthine mixing channel (22) between the inlets and the recess. In a further modification, Fig. 2 (not shown) the labyrinth (33) is incorporated in a part (28) which can be broken off when adhesion is complete, and the adhesive recess (36) has ribs (37) to increase the anchorage area. A cable clamp, Fig. 3a, has such a break-off mixing chamber 38 with a mixing screw 41 which is rotated by the tool which injects the adhesive components. An anchor fastener, Fig. 5, comprises a threaded dowel 51 located in a bore 52 in a foundation, the adhesive constituents being injected with the bore 52 by way of an axial bore 53 in the dowel containing a helical insert 54. The dowel has anchorage grooves 58. Another fastening element (67, Fig. 6a not shown) to be secured to a conical depression in a concrete foundation (66) is of complementary shape thereto and has a screwthreaded socket (70), and an injection channel (78) connecting with a recess (69) for adhesive. An injection tool for the adhesive components has pistons (89), Fig. 8 (not shown) which are simultaneously operated by a knob (91) and yoke (88). The components may be contained in cartridges (82, Fig. 7 not shown) made e.g. of polyethylene and having walls integral with bases recessed to accommodate the pistons (89). The tool has conveying discharge channels (95) obturated by spring- loaded plungers (97). These are retracted by feelers (100) when the tool is applied to the fastening or mixing chamber. The cartridges are proportioned to supply the components in the required ratio. In a modified tool, Fig. 9 (not shown) the entire tool is rotated within a grip (105) to drive a mixing element, by insertion of the push shaft (101) in the chuck of a portable drill, not depicted. |
