Abstract: Systems and methods are described for modeling and analyzing utility structures according to applied loads. Particularly, a model engine can utilize inputs related to a utility structure, environmental conditions to which the utility structure is subjected, and engineering standards expected of the utility structure, and analyze the structure's loading and performance based on analysis configuration inputs. An engine or multiple engines can be run locally, or can be instantiated in a cloud to assist with multiple or complex calculations. Hybrid and geometric non-linear analyses and outputs can be performed or provided.

Abstract: A detached pin pulling accessory for removing pins locking a bogie to a trailer chassis. The puller is intended for use with a trailer having pin pulling equipment which is intended to be pulled by hand. The pin pulling equipment has a handle extending toward the side of the trailer, on which a pulling force is exerted by a first person while a second person rocks the trailer by moving the tractor. The inventive accessory clamps to the trailer and engages the pulling handle of the apparatus, and is self-supporting once these connections are made. An integral crank is wound, which places tension on a spring acting on the pulling handle. The spring maintains tension on the pin pulling equipment without requiring the first person to be present. Thus, releasing pins from a trailer is rendered a one-person task by the novel accessory. The novel accessory requires no external power, such as pneumatic or electrical, and is portable from vehicle to vehicle.

Abstract: An anti-sludging agent for enhancing the recovery of sludging oil crudes from hydrocarbon-bearing formations during acid stimulation treatments comprising an admixture of dicyclopentadiene and a mixture of naturally occurring cyclic monoterpenes isolated from Pinus species which is added in at least a sludge-inhibiting amount to the acid used for stimulation.