A hydraulic brake gear motor (40) with a brake mechanism (42) to operate a roll tarp (12) for use with an open top container (35) of a trailer or rail car. A motor-driven rollable cover (12) is attached to and wrappable about a reel (32) to selectively cov...

A tarp system (10) with a pivoting arm assembly (18) having a housing (22) associated with a motor (24) and with a bent enclosure (36) with a flexible drive shaft (25) substantially within the enclosure (36), such as an extruded tube. The flexible drive sh...