The old fashioned bicycle pump style manual pumps are not advised for use as they are difficult to clean and can cause pain during pumping. (thebabycorner.com)
Cyclehoop, those innovative designers who brought us public bicycle locks have now created, and had installed, a series of elegant bicycle pumps for public use. (treehugger.com)
The CO2 doesn't just sit as a layer on the oxygen and nitrogen, compressing it like some sort of bicycle pump. (skepticalscience.com)