Anchoring device for use in masonry and like structures

Claim 1

An anchoring device for use in mounting an object at a distance from masonry and like supporting structures, comprising a supporting structure having a mounting hole and a mounting surface; a first element adapted to be received and anchored in said hole of said structure, said first element including an expansion sleeve member, and an expander member adapted to be drawn into said expansion sleeve member; an object having a surface facing said mounting surface and defining therewith a gap communicating with the ambient atmosphere; a second element having a first portion located in said hole and secured in said first element, said first portion of said second element being adapted to draw said expander member of said first element into said expansion sleeve member of the latter, and a second portion having a part extending outwardly from said hole across said gap and adapted to carry said object at a predetermined distance from said structure; and means for preventing the access of corrosion-producing media in said gap to said elements, said preventing means including an axially resiliently yieldable circumferentially-complete protective tubular sleeve having axially spaced end faces and surrounding said part of said second portion of said second element in said gap intermediate said structure and said object, said sleeve having an uncompressed length and a partially compressed length slightly smaller than said uncompressed length, and means for exerting axial compressive pressure on said tubular sleeve until said compressed length equals said predetermined distance for thereby effecting direct sealing contact of said end faces thereof with said surfaces, so as to prevent access of corrosion-producing media from said gap to said elements.