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Manufacturers Index - Thor Power Tool Co.
Patents
This page contains information on patents issued to this manufacturer.

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USPTO = U.S. Patent Office . Images of the actual patent can be viewed on the U.S. Patent Office web site but a special TIFF viewer must be installed with your browser in order properly work. More information on how to configure your computer to view these patents can be found at TIFF image Viewers for Patent Images.
DATAMP = Directory of American Tool And Machinery Patents . A sister site to VintageMachinery.org with information on patents related to machinery and tools. A much easier user interface than the USPTO's for finding information on machinery patents.

Patent Number Date Title Name City Description
1,053,940 Feb. 18, 1913 Universal motor James Burke Erie, PA "This invention relates to electric motors, and more particularly relates to an electric motor which is adapted to be actuated by either single phase alternating currents or direct currents, and to a method of varying the speed and changing the direction of rotation of the motor when supplied with alternating current of the same voltage."
A 1919 advertisement for handheld electric drills and grinders from Independent Pneumatic Tool Co. carries the phrase, "Licensed Under Burke Universal Motor Patent". A condensed catalog for Duntley (a brand for Chicago Pneumatic Tool Co.) shows their "Universal Electric Drills". "This type of tool is fully covered by letters patent granted February 18, 1913."
1,099,392 Jun. 09, 1914 Pneumatic-turbine drill Reinhold A. Norling Aurora, IL
1,105,669 Aug. 04, 1914 Rivet-set retainer Reinhold A. Norling Aurora, IL
    Rivet-set retainer Axel Levedahl Aurora, IL  
1,303,367 May. 13, 1919 Hose-clamp Axel Levedahl Aurora, IL
1,363,329 Dec. 28, 1920 Hose-clamp Axel Levedahl Aurora, IL
1,391,177 Sep. 20, 1921 Chuck Giles H. Du Sell Chicago, IL
1,529,910 Mar. 17, 1925 Grip-handle switch for electric drills Reinhold A. Norling Aurora, IL The Independent Pneumatic Tool Co. changed its name to Thor Power Tool Co. in 1953.
1,530,505 Mar. 24, 1925 Stuffing box Axel Levedahl Aurora, IL
1,559,631 Nov. 03, 1925 Pneumatic tool Axel Levedahl Aurora, IL Tool is a "sand rammer of the bench type."
1,580,617 Apr. 13, 1926 Rivet-set retainer Axel Levedahl Aurora, IL
1,591,539 Jul. 06, 1926 Crank-case venting means for pneumatic tools Axel Levedahl Aurora, IL Reissued.
1,591,540 Jul. 06, 1926 Crank-case venting means for pneumatic tools Reinhold A. Norling Aurora, IL
    Crank-case venting means for pneumatic tools Axel Levedahl Aurora, IL  
1,632,671 Jun. 14, 1927 Reversing mechanism for electric drills Reinhold A. Norling Aurora, IL
1,677,199 Jul. 17, 1928 Handle lock for pneumatic tools John T. Nelson Aurora, IL
1,684,231 Sep. 11, 1928 Stud driver Axel Levedahl Aurora, IL Conversion Tool
1,684,633 Sep. 18, 1928 Screw or nut driving device for portable power-driven rotary tools Axel Levedahl Aurora, IL
1,695,777 Dec. 18, 1928 Reversible drill throttle Reinhold A. Norling Aurora, IL The tool in question is a pneumatic drill.
1,706,460 Mar. 26, 1929 Chisel retainer for chipping hammers Reinhold A. Norling Aurora, IL
1,708,183 Apr. 09, 1929 Spindle lock Axel Levedahl Aurora, IL The tool in question is a portable tapping and screw-driving tool.
1,737,419 Nov. 26, 1929 Pneumatic tool Ives A. Hanssen Aurora, IL
1,803,068 Apr. 28, 1931 Rotary cutter device Robert S. McKeage Cicero, IL
1,831,813 Nov. 17, 1931 Attachment for drills Axel Levedahl Aurora, IL Assignee Independent Pneumatic Tool Company changed its name in 1953 to Thor Power Tool Co.
2,100,809 Nov. 30, 1937 Self-starting single phase alternating-current induction motor James Larocca Chicago, IL
2,152,969 Apr. 04, 1939 Balancer William W. Nash Aurora, IL This device is intended to hold a handheld power tool overhead, allowing it to be pulled down for use and then returned to the overhead position.
D156,319 Dec. 06, 1949 Impact Wrench Unit Aileen Bushnell Aurora, IL Pneumatic powered impact wrench design.
The specifications cite patent nos. 138,147 and 149,815 as relevant prior art.
D156,320 Dec. 06, 1949 Impact Wrench Unit Aileen Bushnell Aurora, IL Pneumatic impact wrench design.
The specifications cite a 1942 Black and Decker catalog as relevant prior art.
D159,043 Jun. 20, 1950 Portable power saw Aileen Bushnell Aurora, IL The Independent Pneumatic Tool Co. became the Thor Power Tool Co. in 1953.
2,565,223 Aug. 21, 1951 Belt tightening and aligning mechanism for abrading devices Melvin B. Gentzel Aurora, IL
D165,877 Feb. 05, 1952 Rubbing machine Steven E. Scace Cicero, IL
2,654,190 Oct. 06, 1953 Portable power-operated abrading machine Walter G. Mitchell Aurora, IL
2,670,644 Mar. 02, 1954 Attachment for power-driven rotary tools Giles H. Du Sell Aurora, IL
2,678,636 May. 18, 1954 Air hammer with selective drill steel rotation George H. Fuehrer Downey, CA
2,683,336 Jul. 13, 1954 Rubbing machine Steven E. Scace Cicero, IL
2,683,337 Jul. 13, 1954 Paper clamping device for sanding machines Steven E. Scace Cicero, IL
2,716,475 Aug. 30, 1955 Impact tools Walter G. Mitchell Aurora, IL
2,720,401 Oct. 11, 1955 Drill steel retainer George H. Fuehrer Downey, CA
2,721,090 Oct. 18, 1955 Socket retainer for rotary power tools Frank A. Kaman Aurora, IL
2,727,598 Dec. 20, 1955 Impact wrench torque control Frank A. Kaman Aurora, IL
    Impact wrench torque control Walter G. Mitchell Aurora, IL  
2,728,328 Dec. 27, 1955 Automatic water valve for rock drills George H. Fuehrer Downey, CA
D176,541 Jan. 03, 1956 Saw attachment for a rotary drill Jonas Theodore Lindquist Skokie, IL
2,742,797 Apr. 24, 1956 Multi-spindle portable power-operated tool James A. Perham Aurora, IL
2,753,072 Jul. 03, 1956 Tool for installing tubular rivets Walter G. Mitchell Aurora, IL
2,753,965 Jul. 10, 1956 Impact tools Frank A. Kaman Aurora, IL
2,807,972 Oct. 01, 1957 Multiple unit assembly for rotary tools Walter G. Mitchell Aurora, IL
2,820,611 Jan. 21, 1958 Drilling apparatus George H. Fuehrer Downey, CA
2,820,612 Jan. 21, 1958 Wagon drill George H. Fuehrer Downey, CA
2,836,272 May. 27, 1958 Impact clutch Frank A. Kaman Aurora, IL
2,853,273 Sep. 23, 1958 Rope drum device Olav O. Berge Los Angeles, CA
2,886,075 May. 12, 1959 Torque release clutch drive mechanism for power operated screw drivers and the like Donald O. Skoog Aurora, IL
2,890,072 Jun. 09, 1959 Retainer for rotary power tools Paul E. Vega Glen Ellyn, IL
    Retainer for rotary power tools Frank A. Kaman Aurora, IL  
2,914,031 Nov. 24, 1959 Telescopic feed leg assembly George H. Fuehrer Downey, CA
2,919,901 Jan. 05, 1960 Drill system with suction Robert L. Sandvig Whittier, CA
2,923,306 Feb. 02, 1960 Pressure regulator valve mechanism for air tools Walter G. Mitchell Aurora, IL
2,954,492 Sep. 27, 1960 Brush ring assembly Wilmer C. Nussbaum Xenia, OH
    Brush ring assembly Paul R. de Voe Dayton, OH  
2,953,903 Sep. 27, 1960 Hydraulic system for operating simultaneously a plurality of power units Leo Kramer Aurora, IL
    Hydraulic system for operating simultaneously a plurality of power units Donald K. Skoog Aurora, IL  
2,958,534 Nov. 01, 1960 Working tool retainer mechanism George M. Fuehrer Downey, CA
2,965,774 Dec. 20, 1960 Casing structure for portable tool Ernest C. Rangus Lombard, IL
2,969,846 Jan. 31, 1961 Percussive drill bit for use in reverse flow flushing is soft rock drilling Robert L. Sandvig Whittier, CA
2,984,210 May. 16, 1961 Shock-absorbing handle structure for pneumatic tools George H. Fuehrer Downey, CA
2,990,032 Jun. 27, 1961 Separator for use with rock drills Robert L. Sandvig Whittier, CA
3,003,773 Oct. 10, 1961 Coupling assembly with positive lock George H. Fuehrer Downey, CA
3,007,449 Nov. 07, 1961 Simplified telescopic feed leg assembly George H. Fuehrer Downey, CA
3,010,730 Nov. 28, 1961 Coupling with lock George H. Fuehrer Downey, CA
3,022,838 Feb. 27, 1962 Portable hammer Wallace F. Mitchell Arlington Heights, IL
3,057,417 Oct. 09, 1962 Drill system with suction removal of cuttings Robert L. Sandvig Whittier, CA
3,062,107 Nov. 06, 1962 Troweling machine Wallace F. Mitchell Arlington Heights, IL
3,097,571 Jul. 16, 1963 Rotary fluid motor Frank A. Kaman Aurora, IL
3,099,905 Aug. 06, 1963 Portable tool Philip E. Larson Aurora, IL
    Portable tool Peter G. Rebechini Aurora, IL  
3,125,200 Mar. 17, 1964 Pneumatic hoist Frank A. Kaman Aurora, IL
3,191,503 Jun. 29, 1965 Rotor assembly for fluid-handling device George H. Fuehrer Downey, CA
3,203,489 Aug. 31, 1965 Sinker drill George H. Fuehrer Downey, CA
3,214,940 Nov. 02, 1965 Impulse tool Leo Kramer Athens, PA
3,214,941 Nov. 02, 1965 Impulse tool Robert E. Shulters Batavia, IL
3,232,176 Feb. 01, 1966 Percussion tool Leo A. Wagnon Napierville, IL
    Percussion tool Robert E. Shulters Batavia, IL  
    Percussion tool Leo Kramer Athens, PA  
    Percussion tool James C. Hearning Salt Lake City, UT  
3,243,130 Mar. 29, 1966 Wire wrapping tool Robert E. Shulters Batavia, IL
    Wire wrapping tool Peter G. Rebechini Aurora, IL  
3,247,408 Apr. 19, 1966 Brush assembly Peter G. Rebechini Aurora, IL
3,263,449 Aug. 02, 1966 Impulse tool Leo Kramer Chester, NJ
D222,029 Sep. 28, 1971 Hand power tool David C. McElroy St. Clair Shores, MI
3,652,879 Mar. 28, 1972 Electric power tool Spencer C. Rees Aurora, IL
    Electric power tool Larry E. Plunkett Montgomery, IL  
3,686,983 Aug. 29, 1972 Torque applying and tension controlling device Andrew Flagge Aurora, IL
3,696,834 Oct. 10, 1972 Fluid control device William Vonhoff Jr. Aurora, IL
3,717,011 Feb. 20, 1973 Impulse unit Vladimir J. Vana La Grange, IL
3,734,515 May. 22, 1973 Power wrench with interchangeable adapters Edmund C. Dudek Saint Charles, IL
D228,732 Oct. 23, 1973 Percussive tool Irwin R. Danielson Burr Ridge, IL
3,775,911 Dec. 04, 1973 Dual safety control for a power tool Andrew Flagge Aurora, IL
3,783,970 Jan. 08, 1974 Sound Attenuating device for a work steel or the like Irvin R. Danielson Burr Ridge, IL
3,815,705 Jun. 11, 1974 Muffler for a pneumatic percussion tool Douglas Bennett Aurora, IL
3,907,342 Sep. 23, 1975 Barb means for a hose connector Edmund C. Dudek St. Charles, IL
3,920,082 Nov. 18, 1975 Power tool with torque sensing control means Edmund C. Dudek St. Charles, IL
3,920,088 Nov. 18, 1975 Power tool with continuous and pulsating torque output cycle Edmund C. Dudek St. Charles, IL
3,926,264 Dec. 16, 1975 Control circuit for a power tool Edmund C. Dudek St. Charles, IL
    Control circuit for a power tool Francis G. Bardwell Elmhurst, IL  
3,934,657 Jan. 27, 1976 Dual safety control means for a power tool Irvin R. Danielson Burr Ridge, IL "A safety control means for a portable power tool, such as a pneumatically driven hand grinder..."
3,939,925 Feb. 24, 1976 Throttle valve construction for percussion tool Irvin R. Danielson Burr Ridge, IL "A throttle valve construction for a pneumatic paving breaker and other types of percussion tools employing a reciprocating piston..."
4,006,784 Feb. 08, 1977 Fluid operated power tool Edmund C. Dudek St. Charles, IL "A pneumatic power tool having a torque sensing control system is disclosed which is capable of consistently applying a precise torque to a fastening..."
4,043,222 Aug. 23, 1977 Housing construction for a power tool Edmund C. Dudek St. Charles, IL
4,066,942 Jan. 03, 1978 Control circuit for a power tool Edmund C. Dudek St. Charles, IL The tool in question is an electric or pneumatic wrench.
    Control circuit for a power tool Francis G. Burdwell Elmhurst, IL  
4,074,772 Feb. 21, 1978 Torquing tool control circuit Gregg N. Jonsson Batavia, IL
4,081,037 Mar. 28, 1978 Control system for a multiple spindle machine Gregg N. Jonsson Batavia, IL
4,281,538 Aug. 04, 1981 Transducer for indicating torque Edmund C. Dudek St. Charles, IL
4,404,799 Sep. 20, 1983 Pneumatic tool with muffler Edmund C. Dudek St. Charles, IL
D272,710 Feb. 21, 1984 Paving breaker Stanley E. Thorwaldsen Grosse Point Farm, MI
    Paving breaker Milton J. Antonick Royal Oak, MI  
4,483,402 Nov. 20, 1984 Paving breaker William Vonhoff Jr. Montgomery, IL