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Digging Up the Past

Caterpillar Buys Buster Peterson's Patents

Buster testing his Twin D8 design in the early 1950s

Peterson’s Special Equipment Services Shop (SEQ) was the launching pad for many, many equipment designs throughout much of earthmoving’s recent history. In all, Buster Peterson patented 34 of his designs, between 1949 and 1973, which Caterpillar later purchased and integrated into their product line.

 

Description of Mechanism
Date of Patent
 Patent No.

U Dozer 

Offset D8 Pipelayer

Twin D8s 

Track Control Mechanism 

Bulldozer for Push-CAT

Apron Arrangement/Scraper  

Large Capacity Scraper 

Multi-actuating/Clam Bucket  

Bottom-dump door mechanism

Control and Steering - Dual 631 Compactor

Compactor Wheel Cleaner Blades

Draft Assembly/Quad D9s

Tandem Scraper Steering Controls

Tandem Scraper Controls

Accelerator for Multiple engines - Triple 657s

Controls for Tandem Scrapers

988 Bonus Bucket  

Multiple Articulated Apron/Hoe Apron Scraper

Demolition Bucket

Modified 950 loader = 905 Loader/Skidder

Swinging Bucket Loader   

Adjustable Ripper Tip

Bottom Dump Transport Vehicle

Hoe Apron Scraper

Single Lever Control for Hoe Apron Scraper

Cushion-Track (forerunner to Beadless Tire) 

Inside Arm Dozer 

Loader with improved stability and reach

Adjustable Ripper Tip  

Side-by-Side Tractor

Manipulating Apron for Hoe Apron Scraper 

Bucket Arrangement

Stabilizer for Articulated Wheel Loaders

Log Skidder   

Oct.  1949

July  1955

July  1956

Dec  1958

June 1961

May  1962

Feb  1963

May 1963

May 1965

Apr  1966

July  1966

Aug  1966

Aug  1966

Dec  1966

Jan  1967

Sept 1967

Feb  1968

Oct 1969

Nov 1969

Apr 1970

July 1970

Dec 1970

Jan 1971

Apr 1971

June 1971

Aug 1971

Jan 1972

Apr 1972

May 1972

May 1972

Dec 1972

June 1973

Sept 1973

Oct 1973

2485407

2712873

2678105

2863516

2986827

3035361

3077681

3088328

3185528

3245488

3259036

3266816

3269481

3290806

3296885

3339658

3369680

3471952

3477602

3508676

3521782

3550691

3558190

3574960

3589242

3601212

3631930

3658202

3659654

3661214

3707048

3737059

3759541

3762584

 

Buster's drawing for the Triple 657 scraper patented in January 1967    

 

 

 

 

 

 

 

R.A. "Buster" Peterson
   Executive Vice President,
   Peterson Tractor Co. (1943 - 1977)
Buster designed dozens of marketable
ideas during his 34-year career
 at Peterson Tractor Co.

 

 

        

 

 

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