air pump
vacuum pump

Now, you may not find a working air pump at all.

They use an air pump to get him back to normal.

The man again worked the instrument which was like a small air pump, taking care not to get his own face too near it.

Later, his interest in diving led to him to design an air pump.

Which you choose, an air pump or alternative means, is a matter of personal choice.

Now, using an air pump usually costs a quarter or 50 cents for five minutes.

A man outside laid aside something that looked like an air pump.

Everything you need, including the air pump, comes in a 28-inch-tall plastic bucket.

When connected and adjusted, an air pump needs very little attention.

I got into the Dodge and drove over to the air pump.