Development and Testing of a Breakaway Support Coupling for Light Poles. Abridgment Each year numerous injuries and fatalities occur as a result of vehicles hitting light poles adjacent to U.S. highways. Until recently the widely used tran... Arthur,M.,Dinitz,D.,... - 《Transportation Resear...
3002775Safety coupling for hydrant valve stem1961-10-03Mueller et al. 2267533Frangible hydrant1941-12-23O'Brien 2240427Anchoring template for machinery and the like1941-04-29Thomsen 0803373N/A1905-10-31 Parent Case Data: This application is a continuation-in-part of earlier filed application, Se...
1. A breakaway support post for mounting a guardrail thereon as part of a highway guardrail system comprising: an elongated body having an upper portion and a lower portion; a rotatable coupling assembly disposed between the upper portion and the lower portion of the elongated body; the upper ...
Light poles, sign posts or similar items are often installed next to a roadway with a breakable or releasable connection. For some applications, a cement foundation may be provided adjacent to the roadway with three or more bolts projecting from the foundation around the circumference of the pole...
3837752COUPLING FOR BREAK AWAY POLE BASES1974-09-24Shewchuk403/2 3637244LOAD CONCENTRATED BREAKAWAY COUPLING1972-01-25Strizki403/2 3630474BREAKAWAY POLE SUPPORT STRUCTURE1971-12-28Minor52/98 3623394N/A1971-11-30Paine403/2 3623286N/A1971-11-30Parduhn ...
for a desired breakaway force. The magnetic coupling should be strong enough that under test conditions, disks will fly off of the mandrels16before the mandrel sleeves40will fling off the cores60. Magnetic coupling should also be weak enough, however, so that a breakaway will occur without ...