Portable air compressor

1. An air compressor comprising:

a compressor assembly including an electric motor and a pump driven by the motor;

a battery pack electrically connected to the motor for providing electrical power thereto;

a storage tank that receives compressed air from the pump;

a case entirely enshrouding at least the compressor assembly and the storage tank;

an outlet port in fluid communication with the storage tank;

an adjustable pressure regulator at least partially positioned within the case, the outlet port configured to discharge compressed air from the storage tank at a regulated pressure determined by the pressure regulator; and

an adjustment knob to adjust the regulated pressure of compressed air provided by the outlet port, the adjustment knob positioned on an exterior of the case when the case is in a closed configuration;

wherein the case attenuates noise emitted by the compressor assembly; and

wherein the case includes one of a projection or a recess configured to engage the other of a projection or a recess of an identical second case to couple the case to the second case.

2. The air compressor of claim 1 , wherein the case defines an interior, and wherein the case includes a base and a lid that is selectively openable by a user to allow access to the interior.

3. The air compressor of claim 1 , wherein the case includes a handle to facilitate transporting the compressor assembly and the storage tank.

4. The air compressor of claim 1 , wherein the pump is a single-piston reciprocating pump.

5. The air compressor of claim 1 , wherein the outlet port extends from the exterior of the case.

6. The air compressor of claim 5 , wherein the outlet port is a first outlet port and the air compressor further includes a second outlet port in direct fluid communication with the storage tank, wherein the second outlet port is configured to discharge unregulated compressed air from the storage tank.

7. The air compressor of claim 6 , further comprising:

a first gauge that displays the regulated pressure of the compressed air discharged from the first outlet port; and

a second gauge that displays the pressure within the storage tank.

8. The air compressor of claim 6 , wherein the first and second outlet ports are configured to simultaneously discharge compressed air therefrom.

9. The air compressor of claim 1 , further comprising a control panel disposed on the case to selectively activate the compressor assembly.

10. The air compressor of claim 1 , wherein the battery pack is positioned inside the case.

11. The air compressor of claim 1 , wherein the case, when in the closed configuration, attenuates noise produced by the compressor assembly to less than 68 decibels.

12. The air compressor of claim 1 , wherein the compressor assembly fills the storage tank with compressed air at a pressure between 75 psi and 125 psi while producing less than 68 decibels of noise with the case closed.

13. The air compressor of claim 1 , wherein the case has a width that is less than 12 inches.

14. The air compressor of claim 1 , wherein the case includes a first recess to receive a pneumatic tool which is fluidly connected to the storage tank.

15. The air compressor of claim 14 , wherein the case further includes a second recess to receive an air hose that fluidly connects the pneumatic tool to the storage tank.

16. An air compressor assembly comprising;

a first case defining a first interior, the first case including a first base and a first lid that is selectively openable by a user to allow access to the first interior;

a compressor assembly including an electric motor and a pump driven by the motor, the compressor assembly disposed within the first interior of the first case;

a second case defining a second interior, the second case including a second base and a second lid that is selectively openable by a user to allow access to the second interior; and

at least one storage tank disposed within the second interior, wherein the storage tank is operable to store compressed air from the compressor assembly;

wherein the first case includes a projection that is receivable in a recess of the second case to couple the first and second cases together.