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Class Information
Number: 14/46
Name: Bridges > Draw > Locking devices
Description: Devices for positively locking drawbridges against movement.

Patents under this class:

Patent Number Title Of Patent Date Issued
8590086 Wear resisting span lock system Nov. 26, 2013
6701562 Span lock with centering guide Mar. 9, 2004
6588041 Pre-load adjustment for span lock system Jul. 8, 2003
5327605 Energy-absorbing span lock system for drawbridges Jul. 12, 1994

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