| US 7,597,502 B2 | ||
| Vehicle arresting blocks, beds and methods | ||
| Glenn Allen, Aston, Pa. (US); Richard D. Angley, Aston, Pa. (US); John L. Gordon, Boothwyn, Pa. (US); Peter T. Mahal, Berwyn, Pa. (US); and Silvia C. Valentini, West Chester, Pa. (US) | ||
| Assigned to Engineered Arresting Systems Corporation, Aston, Pa. (US) | ||
| Filed on Jul. 09, 2007, as Appl. No. 11/774,682. | ||
| Application 11/774682 is a division of application No. 11/253333, filed on Oct. 19, 2005, granted, now 7,261,490. | ||
| Application 10/755163 is a division of application No. 09/951080, filed on Sep. 13, 2001, granted, now 6,685,387. | ||
| Application 11/253333 is a continuation of application No. 10/755163, filed on Jan. 09, 2004, granted, now 6,971,817. | ||
| Prior Publication US 2008/0014019 A1, Jan. 17, 2008 | ||
| Int. Cl. E01C 5/00 (2006.01) | ||
| U.S. Cl. 404—10 [404/34; 188/376; 188/377] | 3 Claims |
| 1. A vehicle arresting unit comprising:
(a) deformable material sufficient to arrest travel of a vehicle without catastrophically damaging the vehicle, the deformable
material (i) configured to deform upon being contacted by the vehicle to effect the arrest, and (ii) comprising compressible
material in the form of ceramic foam having top, bottom and side surfaces and omitting phenolic foam and cellular concrete;
and
(b) frangible material positioned above the top surface, the frangible material (i) fabricated to protect the compressible
material prior to vehicle arrestment, (ii) having a breaking strength to readily break without subverting the arrestment characteristics
of the compressible material, and (iii) comprising material different from the compressible material.
|