This pump design is beautiful in its simplicity, but it has a two big limitations:

Many variations of the positive displacement pump have been developed, and many other pump designs rely on fundamentally different principles.

Lefts, Rights, and A-frames could be directed from this pump design providing for rippable surf and barrel rides.

He stated that the design of the rocket engine hinged on the question of whether the pump design was viable.

Throughout the years various improvements to gear pump design have led to other patents and product features being developed.

Accuracy and consistency, largely a facet of pump design, are the key requirements for these dispensers.

The new pump design has been used in fire extinguishers, as well as mobile biological and chemical control units for the US military.

Inventor's claims of pump design:

Mootfowl seemed to have no emotions, desires, or concerns, except those of metal working, smithing, machine building, pump design, beam raising, cable spinning, and structural engineering.

Without the need for a specialized pump mechanic these newer pump designs can provide longer lasting sustainable access to drinking water.