Harig Products, Inc. - Assigned Patents

Manufacturers Index - Harig Products, Inc.

Harig Products, Inc.
Elgin, IL, U.S.A.
Manufacturer Class: Metal Working Machinery

Patents

This page contains information on patents issued to this manufacturer.

Submitting Patent Information

If you find a patent number or patent date by this manufacturer that is not on this list, please contact the Site Historian.

Key to Links for Patent Information

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
2,449,459	Sep. 14, 1948	Perforator Grinding Fixture	Theodore Eckert	Lincolnwood, Cook County, IL
2,958,167	Nov. 01, 1960	Grinder Fixture	Alvin E. Mueller	Downey, Los Angeles County, CA	This patent is the basis for Harig's Steptool Relief Grinding Fixture.
3,030,744	Apr. 24, 1962	Air film bearing for machine tools	Alvin E. Mueller	Downey, CA	The Harig Air-Flo Fixture, a surface-grinder accessory for sharpening end mills and other milling cutters, used this patented air bearing. This fixture provided the sensitivity needed to sharpen very small cutters, as small as 1/32 inch diameter. In United States District Court, Northern District of Illinois, Harig Products, Inc. v. K. O. Lee Co., claim 3 of this patent was held to be invalid. Harig appealed to the Seventh Circuit Court of Appeals, and lost again. These rulings seem somewhat surprising because although each individual element was not newâ€”as is true for most patentsâ€”the combination was new. But the courts ruled that the combination was obvious to someone skilled in the art even though no-one had thought to combine them before this invention.
648,161	Sep. 04, 1962	Perforator grinding fixture	Theodore Eckert	Lincolnwood, IL	This is the Canadian equivalent of US patent 2,449,459, and was used on the Harig Grind-All
648,458	Sep. 11, 1962	Air film bearing for machine tools	Alvin E. Mueller	Downey, CA	This is the Canadian equivalent of US patent 3,030,744, and was used on the Harig Air-Flo fixture.
918,572	Feb. 13, 1963	Improvements relating to tool grinding fixtures	Alvin E. Mueller	Downey, CA	This is the British equivalent of US patent 3,030,744, which covers the air bearing used on the Harig Air-Flo fixture for sharpening end mills and other milling cutters.
3,094,821	Jun. 25, 1963	Grinding fixtures	Theodore Eckert	Lincolnwood, IL	This patent number, along with patent 2,449,459, was seen on a "Grind All No. 1" from Harig Mfg. Corp.