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Portable air compressor

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Portable air compressor


A wheelbarrow compressor has a resting position and a transport position. First and second reservoirs contain a compressed fluid, and the second reservoir is fluidly separate from the first reservoir. The second reservoir is positioned above the first reservoir in a generally vertical direction when the wheelbarrow compressor is in the resting position. A handle assembly is attached at a rear end of the wheelbarrow compressor, and a wheel assembly attached at a front end of the wheelbarrow compressor generally opposite the rear end. A pump is fluidly connected to the first and second reservoirs for providing the compressed fluid thereto, and a motor is operatively connected to the pump to drive the pump. The pump and motor are positioned adjacent the first and second reservoirs in a generally horizontal direction when the wheelbarrow compressor is in the resting position.

Inventors: Douglas K. Ritterling, Kenneth M. Brazell, Richard L. Strack
USPTO Applicaton #: #20120321488 - Class: 417234 (USPTO) - 12/20/12 - Class 417 
Pumps > Ambulant, Body Supported, Or With Carrying Handle

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The Patent Description & Claims data below is from USPTO Patent Application 20120321488, Portable air compressor.

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CROSS-REFERENCE TO RELATED APPLICATION

This application is a continuation-in-part of U.S. patent application Ser. No. 12/606,801, filed Oct. 27, 2009, which is a divisional of U.S. patent application Ser. No. 11/731,999 filed Apr. 2, 2007, now abandoned. These applications are incorporated herein by reference in their entirety.

BACKGROUND

The present invention relates to compressor assemblies, and, in particular, relates to portable compressor assemblies.

Several types of compressors currently exist, some of which are portable and often include an air storage tank that normally includes either one or two air reservoirs for storing compressed air and, with respect to the longitudinal axis of the tank, a wheel located at one end of the air tank and a handle at the opposite end of the tank. The compressors with two air reservoirs generally utilize one wheel while the single reservoir compressors of this type generally utilize two wheels. These single and double reservoir types of compressors are often referred to as wheelbarrow compressors. The compressor will also include components to compress the air. These components generally include a motor assembly and a pump assembly. Due to space constraints, these components typically are mounted on top of the air tanks.

Mounting the components on top of the air tanks results in several disadvantages. One disadvantage is the high center of gravity that results from mounting the components on top of the air tanks The high center of gravity is particularly inconvenient for a user manually transporting the compressor and may result in a user losing control of the compressor. This is particularly the case in the two-reservoir wheelbarrow-style compressors used at worksites that are often transported in a wheelbarrow type manner up and down narrow wooden ramps. Additionally, the high center of gravity may cause the air compressor to be unstable and prone to tipping or tilting when being used.

Moreover, such compressors may be difficult to package and store for, by way of example, shipping, warehousing or retail purposes. When packaged, the air compressors are often shipped, stored or displayed by being stacked atop one another on shelves. Existing compressors tend to have high profiles (i.e., are of a taller height). Thus, when packaged, a large amount of storage space may be necessary. Likewise, if the compressors are shipped in large shipping containers, the compressor height limits the number of units that can be packed into a container. Moreover, a greater amount of packaging materials may be necessary due to the high profile of the compressor.

Additionally, the handles on such tanks also can cause difficulties when storing the compressors. The handles on such compressors often project outwardly and upwardly from the compressor. Such a configuration again results in an increased height and length and the need for a greater amount of storage space and packaging material.

SUMMARY

The invention provides a wheelbarrow compressor having a resting position and a transport position, the wheelbarrow compressor including first and second air reservoirs, a handle assembly, a wheel assembly, a pump and a motor. The first reservoir is for containing a compressed fluid, and the second reservoir is fluidly separate from the first reservoir and is for containing a compressed fluid. The second reservoir is positioned above the first reservoir in a generally vertical direction when the wheelbarrow compressor is in the resting position. The handle assembly attached at a rear end of the wheelbarrow compressor, and the wheel assembly attached at a front end of the wheelbarrow compressor generally opposite the rear end. The pump is fluidly connected to the first and second reservoirs for providing the compressed fluid thereto, and the motor is operatively connected to the pump to drive the pump. The pump and motor are positioned adjacent the first and second reservoirs in a generally horizontal direction when the wheelbarrow compressor is in the resting position.

In another aspect, the invention provides a wheelbarrow compressor having a resting position and a transport position, the wheelbarrow compressor including first and second reservoirs, a handle assembly, a wheel assembly, a pump, a motor and a flywheel. The first reservoir is for containing a compressed fluid, and the second reservoir is fluidly separate from the first reservoir and is for containing a compressed fluid. The handle assembly is attached at a rear end of the wheelbarrow compressor, and the wheel assembly is attached at a front end of the wheelbarrow compressor generally opposite the rear end. The pump is fluidly connected to the first and second reservoirs for providing the compressed fluid thereto. The motor is operatively connected to the pump to drive the pump. The flywheel is coupled to one of the motor and the pump. The one of the motor and the pump are positioned between the flywheel and the first and second reservoirs such that the flywheel is on a first side of the one of the motor and the pump, and the first and second reservoirs are on a second side of the one of the motor and the pump, wherein the second side is generally opposite the first side.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of a compressor assembly.

FIG. 2 is a left side view of the compressor assembly of FIG. 1.

FIG. 3 is a right side view of the compressor assembly of FIG. 1.

FIG. 4 is a top view of the compressor assembly of FIG. 1.

FIG. 5 is a bottom view of the compressor assembly of FIG. 1.

FIG. 6 is a front view of the compressor assembly of FIG. 1.

FIG. 7 is a rear view of the compressor assembly of FIG. 1.

DETAILED DESCRIPTION



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stats Patent Info
Application #
US 20120321488 A1
Publish Date
12/20/2012
Document #
13597388
File Date
08/29/2012
USPTO Class
417234
Other USPTO Classes
International Class
04B41/02
Drawings
7



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