Pre-load adjustment for span lock system
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United States of America Patent
Stats
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Jul 8, 2003
Grant Date -
N/A
app pub date -
Feb 11, 2002
filing date -
Feb 11, 2002
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A drawbridge span lock system in which a locking bar longitudinally slides between wear shoes in each of guide and socket assemblies. The wear shoes are pre-loaded to a selected level by springs within the assemblies to maintain continuous contact of the shoes with the locking bar under no-load operating conditions of the bridge. Threaded adjusting carriers externally accessible in each assembly enable the springs to be precisely pre-loaded to any level within a design range.
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