US Patent 11294402 Segmented fluid end assembly

A segmented fluid end assembly has a first module having a body with a first side surface and a slot formed therein and extending along at least a portion of the first side surface, a second module having a body with a first side surface and having a slot formed in the first side surface and generally aligned with the slot of the first module, and a connector received in the slots of the first and second module so as to fix the first module against the second module. The connector is in the nature of a wedge. Each of the slots has a generally dovetail configuration. The wedge has a generally hourglass cross-section. The wedge is engaged in friction-fit relationship in the slots.