Abstract: A control system and method for ensuring proper closure of a dual swing gate. The control system employs position sensors for monitoring the position of each gate arm. A “differential position” is maintained between the arms during closing to ensure proper sequencing. The control system regulates the speed of the master arm and the slave arm to ensure that the differential position is maintained throughout the closure process.
Abstract: A saddle type pipe clamp that is adjustable to a wide range of pipe sizes includes a saddle portion formed by a pair of complementary saddle elements of channel stock. Each saddle portion includes curved clamping surfaces, and a bolt hole and slot in the closed edge. An elongate threaded rod is provided which is manually bent around a pipe to form a U-bolt. The saddle elements are adjusted to fit the U-bolt, and installed with washers and nuts. The ends of the U-bolt may be trimmed after installation.