Air compressor assembly with shroud

• US 6,431,839 B2
• Filed: 12/13/2000
• Issued: 08/13/2002
• Est. Priority Date: 07/19/2000
• Status: Expired due to Fees

• Current Assignee: Campbell Hausfeld/Scott Fetzer Company (Berkshire Hathaway Incorporated)
• Original Assignee: Campbell Hausfeld/Scott Fetzer Company (Berkshire Hathaway Incorporated)
• Inventors: Gruber, Christopher, Reger, Todd A.
• Primary Examiner(s): Freay, Charles G.
• Assistant Examiner(s): Belena, John F.
• Application Number:
  US09/735,815
• Publication Number:
  US 20020009372A1
• Time in Patent Office: 608 Days
• Field of Search: 417/234, 417/235, 417/313, 417/415, 417/201, 417/368, 415/1, 415/76, 200/60, 200/61.05, 200/43.22, 200/296, 335/205, 335/296
• US Class Current: 417/234
• CPC Class Codes: F02B 63/02 for hand-held tools
• CPC Class Codes: F02B 63/06 for pumps
• CPC Class Codes: F02B 75/06 Engines with means for equalising torque
• CPC Class Codes: F04B 35/06 Mobile combinations
• CPC Class Codes: F04B 39/0094 crankshaft

Abstract

An apparatus comprises a tank, an air compressor, and a motor with an output shaft. A fan is mounted on the output shaft. A drive assembly interconnects the motor operatively with the compressor. The apparatus further includes a base structure and a shroud. The base structure is configured to support the compressor, the motor and the drive assembly on the tank. The shroud is configured to cover the compressor, the motor, the drive assembly and the base structure on the tank. The shroud has a cooling air inlet port and a cooling air outlet port. A plurality of internal wall portions of the shroud are configured to direct cooling air to flow over the motor and the compressor upon flowing through the cover from the inlet port to the outlet port under the influence of the fan.

Claims

1. An apparatus comprising:

a tank configured to contain air at an elevated pressure;

an air compressor operative to supply compressed air for storage in said tank;

a motor with an output shaft;

a fan mounted on said output shaft;

a drive assembly configured to interconnect said motor operatively with said compressor;

a base structure configured to support said compressor, said motor and said drive assembly on said tank; and

a shroud configured to cover said compressor, said motor, said drive assembly and said base structure on said tank;

said shroud having a cooling air inlet port, a cooling air outlet port, and a plurality of internal wall portions configured to direct cooling air to flow over said motor and said compressor upon flowing through said cover from said inlet port to said outlet port under the influence of said fan;

said shroud further having a lower section configured as a skirt extending around the periphery of said base structure, and further having an upper section configured as a cover which extends over said compressor, said motor and said drive assembly when said upper section is received over said lower section in an installed position;

said lower section of said shroud being fixed to said base structure by a plurality of fasteners that are spaced apart about said periphery of said base structure, and said upper section of said shroud being configured to be fastened to said lower section by a solitary fastener accessible from above said upper section.

2. An apparatus as defined in claim 1 wherein said output shaft has a first axis, said compressor contains a piston supported for reciprocation along a second axis perpendicular to said first axis, and said internal wall portions of said shroud are configured to define an L-shaped flow path extending along said first and second axes.

3. An apparatus as defined in claim 2 wherein said inlet and outlet ports are located at opposite ends of said L-shaped flow path.

4. An apparatus comprising:

a tank configured to contain air at an elevated pressure;

a motor with an output shaft having a first axis;

an air compressor operative to supply compressed air for storage in said tank, said air compressor containing a piston supported for reciprocation along a second axis perpendicular to said first axis;

a fan mounted on said output shaft;

a drive assembly configured to interconnect said motor operatively with said compressor;

a base structure configured to support said compressor, said motor and said drive assembly on said tank; and

a shroud configured to cover said compressor, said motor, said drive assembly and said base structure on said tank;

said shroud having a cooling air inlet port, a cooling air outlet port, and a plurality of internal wall portions configured to direct cooling air to flow over said motor and said compressor upon flowing through said cover from said inlet port to said outlet port under the influence of said fan;

said internal wall portions being further configured to define an L-shaped flow path extending along said first and second axes, said L-shaped flow path being oriented such that the cooling air flows over said motor along said first axis, and flows over said compressor along said second axis.

5. An apparatus as defined in claim 4 wherein said inlet and outlet ports are located at opposite ends of said L-shaped flow path.

6. An apparatus as defined in claim 4 wherein said shroud has a lower section configured as a skirt extending around the periphery of said base structure, and further has an upper section configured as a cover which extends over said compressor, said motor and said drive assembly when said upper section is received over said lower section in an installed position.

7. An apparatus as defined in claim 6 wherein said lower section of said shroud is fixed to said base structure by a plurality of fasteners that are spaced apart about said periphery of said base structure, and said upper section of said shroud is configured to be fastened to said lower section by a solitary fastener accessible from above said upper section.

8. An apparatus as defined in claim 4 wherein said shroud has a recess configured as a tool storage compartment.

9. An apparatus as defined in claim 4 wherein said shroud has a plurality of bores, each of which is configured to receive a corresponding quick connect fitting in a manually releasable interference fit.

10. An apparatus as defined in claim 4 wherein said shroud is configured to enclose air pressure gages and has access openings for the faces of the air pressure gages.

11. An apparatus as defined in claim 4 wherein said shroud is configured to enclose an on-off switch for said motor and has an access opening configured for a key to operate said on-off switch.

12. An apparatus as defined in claim 4 wherein said shroud has an access opening for an air pressure control knob.

13. An apparatus as defined in claim 4 wherein said shroud has an access opening for an air pressure relief valve stem.

14. An apparatus comprising:

a tank configured to contain air at an elevated pressure;

a motor with an output shaft having a first axis;

an air compressor operative to supply compressed air for storage in said tank, said air compressor containing a piston supported for reciprocation along a second axis;

a fan mounted on said output shaft;

a drive assembly configured to interconnect said motor operatively with said compressor;

a base structure configured to support said compressor, said motor and said drive assembly on said tank; and

a shroud configured to cover said compressor, said motor, said drive assembly and said base structure on said tank;

said shroud having a cooling air inlet port, a cooling air outlet port, and a plurality of internal wall portions configured to direct cooling air to flow over said motor and said compressor upon flowing through said cover from said inlet port to said outlet port under the influence of said fan;

said internal wall portions being further configured to constrain the cooling air to change direction to follow a flow path extending along said first and second axes.

15. An apparatus as defined in claim 14 wherein said first axis is different from said second axis.

16. An apparatus as defined in claim 14 wherein said flow path is L-shaped and said inlet and outlet ports are located at opposite ends of said L-shaped flow path.

17. An apparatus comprising:

a tank configured to contain air at an elevated pressure;

an air compressor operative to supply compressed air for storage in said tank;

a motor with an output shaft;

a fan mounted on said output shaft;

a drive assembly configured to interconnect said motor operatively with said compressor;

a base structure configured to support said compressor, said motor and said drive assembly on said tank; and

a shroud configured to cover said compressor, said motor, said drive assembly and said base structure on said tank;

said shroud having a cooling air inlet port, a cooling air outlet port, and a plurality of internal wall portions configured to direct cooling air to flow over said motor and said compressor upon flowing through said cover from said inlet port to said outlet port under the influence of said fan;

said shroud further having a lower section configured as a skirt extending upward around the periphery of said base structure, and further having an upper section configured as a cover which extends over said compressor, said motor and said drive assembly when said upper section is received over said lower section in an installed position.

18. An apparatus as defined in claim 17, wherein said output shaft has a first axis, said compressor contains a piston supported for reciprocation along a second axis perpendicular to said first axis, and said internal wall portions of said shroud are configured to define an L-shaped flow path extending along said first and second axes.

19. An apparatus as defined in claim 18 wherein said inlet and outlet ports are located at opposite ends of said L-shaped flow path.