초록 ▼

Attachment devices are described for attaching and locating overlapped anchor sheets while allowing for some relative movement as to expansion and contraction. Generally, the devices are a male/female connection on corresponding sheets and expansion openings or apertures surrounding either the male

Attachment devices are described for attaching and locating overlapped anchor sheets while allowing for some relative movement as to expansion and contraction. Generally, the devices are a male/female connection on corresponding sheets and expansion openings or apertures surrounding either the male or female part to provide for areas of flexibility to provide for possible movement of either the male or female part.

대표청구항 ▼

The invention claimed is: 1. A first sheet member to connect to an overlapped second sheet member to form a substantially horizontal surface comprising the following:(a) the first sheet member being a regular geometric shape and having at least one edge, a first surface, and a generally arcuate coun

The invention claimed is: 1. A first sheet member to connect to an overlapped second sheet member to form a substantially horizontal surface comprising the following:(a) the first sheet member being a regular geometric shape and having at least one edge, a first surface, and a generally arcuate countersunk surface below the level of the first surface and at the edge of the geometric shape;(b) the first sheet member having in the countersunk portion a first aperture, for receiving a second male member of the overlapped second sheet;(c) the first sheet provided on two opposite sides of the first aperture with second and third apertures proximate to the first aperture, so as to create areas in the sheet of increased flexibility about of the first aperture adjacent the second and third apertures to permit movement of the first sheet member relative to the second sheet member when the second male member is located within the first aperture.