Patents Colonial's innovative spirit has continued throughout our history. Colonial has been awarded several US and International Patents on its products and processes throughout the years.

1. Adjustable Preload Spindle US Patent #6,042,273 One of our unique features to our modular spindles. The Adjustable Preload spindles helps our customers commonize on our spindles, through engine manufacturing plants, reducing the need for excessive spare spindles; this spindle can be used in a variety of applications and configurations. The cost savings to our customers—in using this spindle—has been as high as $500,000 at one plant alone.

2. High Speed Spindle with Adjustable Tool US Patent #4,867,619 The High Speed Spindle with Adjustable Tool was developed with a motorized spindle: to reduce complexity of separate components it has the features necessary for our customers to produce rounder holes and straighter holes. These units have proven to achieve cylindricity of parts within a few microns, and increased tool life—as much a three times the expected levels.

3. Broach Manufacturing Method # 2 United Statues Patent #4,850,253 This Broach Manufacturing Method #2 used by Colonial rewarded us with significant market share, unmatched quality in roundness, and increase our throughput tenfold in critical manufacturing areas of our plant. This broach manufacturing continues to outperform traditional methods.

4. Broach Manufacturing Method # 1 United States Patent #4,498,361 This Broach Manufacturing Method #1 used by Colonial rewarded us with significant market share, unmatched quality in roundness, and increase our throughput tenfold in critical manufacturing areas of our plant. This broach manufacturing continues to outperform traditional methods. Company Recognition Over the years, Colonial has provided unsurpassed products and services, which have kept us on the forefront of the minds of our customers when they are in need. Please take a moment to review the testimonials of our satisfied customers.