Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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| Number | Title | Issue Date |
| 7967532 | Ground anchor or rock anchor with an anchor tension member comprised of one or more individual elements with corrosion-protected anchor head design A ground anchor or rock anchor is provided that includes an anchor tension member composed of one or more individual elements, such as steel bars, steel wires, or steel wire strands. While the anchor tension member is intended to be introduced into a drilled hole an... | 06/28/2011 |
| 7950093 | Tension member for structures and method for manufacturing the same A tension member is provided for structures, in particular a cable stay for a cable-stayed bridge, in which one or more tension elements, such as steel rods, steel wires, or stranded steel wires, run inside a tubular sheath. The tension elements fill only a portion ... | 05/31/2011 |
| 7553108 | Method and arrangement for stressing a staggered anchorage A method and apparatus for tensioning a staggered anchorage comprised of a plurality of tension members, which are anchored in a bore hole at various depths, thus having different free steel lengths. For each staggered anchorage, each tension member is tensioned up ... | 06/30/2009 |
| 7299516 | Construction of a corrosion-resistant tension member in the area of a rerouting point arranged on a support, particularly an inclined cable on the pylon of a cable stayed bridge A corrosion-resistant tension member, particularly an inclined cable of a cable stayed bridge, is comprised of a bundle of individual elements, for example, steel wire strands, which in the open area is encapsulated by sheathing, and which in the area of a rerouting... | 11/27/2007 |
| 7200886 | Construction of a corrosion-resistant tension member in the area where it enters a structure, particularly an inclined cable on the pylon of a cable stayed bridge A corrosion-resistant tension member, particularly an inclined cable of a cable stayed bridge, is comprised of a bundle of individual elements, for example, steel wire strands, which in its open area is encapsulated by sheathing, and which within the structure exten... | 04/10/2007 |
| 7181890 | Anchoring device for a corrosion-resistant tension member, particularly an inclined cable for a cable-stayed bridge An anchoring device for a corrosion-protected tension member includes an anchor body, which is provided with bores for the passage of the tension elements. Sealing discs, which can be compressed by means of a pressure plate and threaded bolts, are provided on a face... | 02/27/2007 |
| 7174684 | Corrosion-resistant tension member, particularly a tendon for prestressed concrete A corrosion-resistant tension member, particularly a tendon for prestressed concrete, comprising a bundle of tension elements arranged inside a sheathing, has at its ends anchoring devices each with an anchor plate. On the side of the anchor plate facing away from t... | 02/13/2007 |
