Abstract: A method and apparatus for forming tubes, rods and the like into a serpentine configuration. A plurality of guide rails are mounted on a supporting surface and carriage bars are slideable on the guide rails. A lazy tong linkage having bend forming members mounted thereon is slideably mounted on the carriage bars. A lazy tong linkage assembly is disposed on each side of a center line and expander mechanisms are provided for forcing the two spaced lazy tong linkages apart. Drive means connected to the carriage bars drives the lazy tong linkage to a collapsed position and this movement causes the bend forming members to form a straight tube or rod into a serpentine configuration.

Abstract: The system is used for pumping cryogenic liquids from delivery vehicles including trucks, semi-trailers and trailers. An internal combustion engine is mounted at the forward end of the vehicle or, in the case of a trailer truck at the forward end of the trailer, and drives a variable displacement hydrostatic transmission which comprises a hydraulic pump driven directly from the output shaft of the internal combustion engine. The transmission also comprises a high speed hydraulic motor coupled by hydraulic lines with the hydraulic pump and arranged in a closed loop system. The hydraulic motor is disposed at a rear end of the vehicle (trailer) and has its output shaft coupled directly to the cryogenic delivery pump of the vehicle. A control panel is mounted in a rear compartment of the vehicle and allows the operator to control, inter alia, engine speed, hydrostatic drive speed and cryogenic pump output pressure.

Abstract: Thermal insulation comprised of fiberglass boards or batts having relatively small diameter fiberglass fibers either bound or unbound is wound about the lading container pressure vessel of a tank truck, trailer or rail car. As the insulation is wound about a longitudinal section of the vessel, the insulation is squeezed from its free height to a lesser height to increase the density of the insulation and also permit passage of the outer jacket. The squeezing is preferably accomplished by wrapping each layer of insulation with a continuous wire mesh. The tension is maintained with the use of a long rod intertwined in the wire mesh, which rod is withdrawn after a section of the outer jacket is over a section of the vessel thereby permitting the insulation to expand and substantially fill the void between the vessel and outer jacket.

Abstract: Thermal insulation comprised of fiberglass boards or batts having relatively small diameter fiberglass fibers either bound or unbound is wound about the lading container pressure vessel of a tank truck, trailer or rail car. As the insulation is wound about a longitudinal section of the vessel, the insulation is squeezed from its free height to a lesser height to increase the density of the insulation and also permit passage of the outer jacket. The squeezing is preferably accomplished by wrapping each layer of insulation with a continuous wire mesh. The tension is maintained with the use of a long rod intertwined in the wire mesh, which rod is withdrawn after a section of the outer jacket is over a section of the vessel thereby permitting the insulation to expand and substantially fill the void between the vessel and outer jacket.