Gas compressor

• US 4,729,291 A
• Filed: 07/18/1986
• Issued: 03/08/1988
• Est. Priority Date: 07/18/1986
• Status: Expired due to Term

• Current Assignee: Ingersoll-Rand Company (Trane Technologies plc)
• Original Assignee: Ingersoll-Rand Company (Trane Technologies plc)
• Inventors: Miller, Bernard F.
• Primary Examiner(s): Garrett, Robert E.
• Assistant Examiner(s): Williamson, Mark A.
• Application Number:
  US06/886,647
• Time in Patent Office: 599 Days
• Field of Search: 92/138, 92/146, 92/147, 92/150, 92/151, 92/152, 92/175, 92/157, 92/165 PR, 92/258, 92/257
• US Class Current: 92/138
• CPC Class Codes: F04B 25/005 with two cylinders
• CPC Class Codes: F04B 27/02 having cylinders arranged oppositely relative to main shaft

Abstract

The Compressor is small, compact and lightweight in that it is formed of the barest essentials. It has a pair of in-line cylinders, with pistons reciprocatable therein, and the crankshaft, having only one crank, is drivingly coupled to one of the pistons. The other piston is fastened to the crank-driven piston, in spaced-apart disposition, for a common reciprocation of the two. One of the cylinders serves as the crankcase.

Claims

1. A gas compressor, comprising:

a pair of opposed, in-line cylinders opening onto each other in an unobstructed confronting relationship;

a pair of opposed, in-line pistons disposed in said cylinders for reciprocation;

a crankshaft having a single crank formed therealong;

a connecting rod directly interconnecting said crank and one of said pistons; and

means fastening said pistons together into a unitized assembly, albeit with said pistons in spaced-apart disposition, for reciprocation of said assembly;

wherein

said fastening means comprises four, identical rods;

each of said pistons has a head and a base, and at said base thereof, a radially extending flange or skirt;

said rods are in penetration of, and fastened to, said piston flanges or skirts to define, between said pistons, an open framework of said rods;

said crank is centralized within said framework;

said crankshaft traverses said framework; and

said rods comprise means for strengthening and stiffening said assembly.

2. A gas compressor, according to claim 1, wherein:

one of said cylinders comprises a crankcase.

3. A gas compressor, according to claim 1, wherein:

one of said cylinders is of a greater inside diameter than the other thereof; and

said one cylinder comprises a crankcase.

4. A gas compressor, according to claim 1, further including:

a fan drivenly coupled to said crankshaft for cooling said compressor.