Energy-absorbing span lock system for drawbridges

Details Energy-absorbing span lock system for drawbridges Energy-absorbing span lock system for drawbridges

1993-03-31

1994-07-12

Britts, Ramon S.

Bridges

Draw

Bascule

14 46, E01D 1508

Patent

active

053276051

ABSTRACT:
An energy absorbing span lock system for drawbridges, such as a double-leaf bascule leaf span. A retractable and extendible connector mounted on one leaf of the span engages a receiver on the other leaf. Resilient energy absorbing shoes in the receiver accept the connector and allow relative deflection between the leaf ends caused by vehicular traffic.

REFERENCES:
patent: 685768 (1901-11-01), Keller
patent: 689856 (1901-12-01), Cummings
patent: 2610341 (1952-09-01), Gilbert
Hovey, O. E., Movable Bridges, John Wiley & Sons, New York 1927, vol. II, pp. 68 and 73.
Hool, G. A. et al., Movable and Long Span Steel Bridges, McGraw-Hill 1923, 2nd Ed., pp. 144-145.

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