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Manufacturers Index - Howell Electric Motors 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
264,759 Oct. 05, 1926 Shaft bearing Charles F. Norton Howell, MI This is the Canadian equivalent of US patent 1,730,896.
1,730,896 Oct. 08, 1929 Bearings for shafts Charles F. Norton Howell, MI The bearings are tapered roller bearings, intended to better accommodate differential heating while in use. The design is an improvement on the inventor's earlier patent application; it appears that that patent was never granted.
1,828,724 Oct. 20, 1931 Alternating current motor Norman S. Yost Howell, MI This capacitor start motor is designed to provide high starting torque.
330,540 Feb. 28, 1933 Alternating current motor Norman S. Yost Howell, MI This is the Canadian equivalent of US patent 1,828,724.
1,972,966 Sep. 11, 1934 Electric motor Norman S. Yost Howell, MI Improvements to the capacitor-start motor of patent 1,828,724 for even higher starting torque. The motor is "particularly adapted for operating the compressors of electric refrigerators."
421,595 Dec. 24, 1934 Improvements in or relating to electric motors Norman S. Yost Howell, MI This capacitor start motor is designed to provide high starting torque.
2,013,821 Sep. 10, 1935 Electric motor Norman S. Yost Howell, MI Improvements to patent 1,972,966 to allow dual-voltage construction while using a start capacitor rated only at the lower voltage.
2,018,500 Oct. 22, 1935 Condenser Leon A. McDermott Howell, MI This capacitor (condenser) uses a paste electrolyte based on sugar. Previous electrolytes tended to dry out over time; this sugar-based electrolyte formed an impermeable crust when the surface dried out, which supposedly prevented further drying.
2,029,550 Feb. 04, 1936 Condenser Ralph K. Albert Howell, MI Annular capacitor for use in motors such as in patents 1,972,966 or 2,017,255.
2,157,191 May. 09, 1939 Method of and means for cooling motors John B. Sinnett Howell, MI This motor intended for "splash-proof enclosed motors", which is close to but not quite a totally enclosed fan-cooled (TEFC) design.
2,164,667 Jul. 04, 1939 Motor switch John B. Sinnett Howell, MI
6,603,652 Aug. 05, 2003 Motor capacitor protective assembly Jason D. Diltz South Plainfield, NJ
    Motor capacitor protective assembly Robert M. Hyatt Jr. Lansdale, PA  
    Motor capacitor protective assembly David A. Segal Dallas, TX