Patents in subclass Bridges/Draw
Parent class: Bridges
| Number | Patent title | Issue Date |
|---|---|---|
| 07020924 | Static stabilizers for bridges An adjustable static stabilizer used to ameliorate shock loading. The static stabilizer has a housing forming a chamber and an upwardly-open cylindrical carrier moveably mounted in the chamber. A plurality of spring washers are mounted in... |
04/04/2006 |
| 06851149 | Lift-slide drawbridge This invention relates generally to a drawbridge apparatus for reversibly spanning from a first base to a second base, and more particularly to a cantilever drawbridge with an initial vertical motion of the bridge deck then a sliding or... |
02/08/2005 |
| 06701562 | Span lock with centering guide A span lock system for a double-leaf drawbridge. A guide housing mounted at the tip of one leaf includes an opening with vertically opposed cushioned shoes slidably supporting an elongate lock bar reciprocative lengthwise in a direction... |
03/09/2004 |
| 06536063 | Guide channel structure In a guide channel structure, for instance for an energy transmission chain, designed for fastening on a substructure which, as on a crane with pivotable jib, for example, displays a stationary section and a section pivotable about a... |
03/25/2003 |