Kurt Manufacturing Co. - Assigned Patents

Manufacturers Index - Kurt Manufacturing Co.

Kurt Manufacturing Co.
Minneapolis, MN, U.S.A.
Company Website: https://www.kurt.com/
Manufacturer Class: Metal Working Machinery

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
3,397,880	Aug. 20, 1968	Vise clamp	William G. Kuban	Minneapolis, MN
3,935,811	Feb. 03, 1976	Bolster table device for punch press	Ingo E. Wolfe	Minneapolis, MN
		Bolster table device for punch press	John O. Lenz	Coon Rapids, MN
4,223,879	Sep. 23, 1980	Machine tool vise	Ingo E. Wolfe	Brooklyn Park, MN	This invention captures the basic idea that led to the now-ubiquitous Kurt vise with movable jaw that pulls slightly downward as it is tightened, which in turn pulls the workpiece down against the vise bed. The inspiration for the idea reportedly came from the now-forgotten Muggli vise of patent 2,880,638.
		Machine tool vise	William G. Kuban	Minneapolis, MN
4,259,815	Apr. 07, 1981	Blade sharpener	William G. Kuban	Columbia Heights, MN
4,265,282	May. 05, 1981	Tubular rotating cutter	John O. Lenz	Coon Rapids, MN
4,288,185	Sep. 08, 1981	Outboard tracing station for carving machine	John O. Lenz	Coon Rapids, MN
4,299,377	Nov. 10, 1981	Manually operated clamp effort intensifier for vise	John O. Lenz	Coon Rapids, MN
4,315,373	Feb. 16, 1982	Machine vise protractor	John O. Lenz	Coon Rapids, MN
4,364,695	Dec. 21, 1982	Carving machine with auxiliary frame	John O. Lenz	Coon Rapids, MN
4,413,818	Nov. 08, 1983	Combination vise	John O. Lenz	Coon Rapids, MN	This machinist vise has a box frame with sides machined square so that it can be oriented conventionally (jaws up), or on either side.
4,413,819	Nov. 08, 1983	Vise clamp and swivel base vise using such clamp	John O. Lenz	Coon Rapids, MN	This vise has integral t-slot clamps and can include a swivel base.
4,481,569	Nov. 06, 1984	Feedback system for robot controller	Samir A. Hoodbhoy	Brooklyn Park, MN
4,496,139	Jan. 29, 1985	Vise clamp and swivel base vise using such clamp	John O. Lenz	Coon Rapids, MN	The application for this patent was split off from that for patent 4,413,819.
4,555,853	Dec. 03, 1985	Drive for position controlled linearly movable carriage	John O. Lenz	Coon Rapids, MN	The invention is a mechanism to permit rapid and precise horizontal linear movement. The traditional method is to use a ball screw but the shaft is prone to whipping when rotated at high speed. This mechanism uses guide rails and friction drive rollers. An encoder provides position feedback.
4,606,695	Aug. 19, 1986	Multiple axis robot arm	John O. Lenz	Coon Rapids, MN	"A robot assembly includes a support for mounting at least two arm portions and a wrist portion about an upright axis. The wrist has three axes of movement...controlled by a singled motor... Additionally, gear drives are used for other movements on the robot arm to permit movement about seven independent axes in the arrangement shown with only two drive motors."
4,621,430	Nov. 11, 1986	Drive for position controlled linearly movable carriage	John O. Lenz	Coon Rapids, MN	This patent's application was divided from that for patent 4,555,853.
4,734,000	Mar. 29, 1988	Power drawbar wrench	John O. Lenz	Coon Rapids, MN	Pneumatic wrench integrated into the drawbar mechanism of a machine tool.
4,934,674	Jun. 19, 1990	Two station, single action vise	Leon M. Bernstein	Minneapolis, MN	This patent is the earliest we have found of the now-famous Kurt vise mechanism using a hemispherical ball to transmit the clamping force to the movable jaw.
4,949,943	Aug. 21, 1990	Multiple air cylinder clamp for vise	Leon M. Bernstein	Minneapolis, MN
335,907	Jan. 08, 1992	Low velocity energized gas particle bearing	David C. Abbe	El Cajon, CA	This European patent provides a design for air bearings for a disk-drive spindle. The innovations are aimed at achieving a full air-bearing gap in less than one revolution at startup, which is achieved by surface flatness and finish, and helical grooves with carefully designed lead-in profile. The counter-intuitive physics of this process is explained, and a good review of the prior art is provided.
5,098,073	Mar. 24, 1992	Two-station vise with double-threaded screw	John O. Lenz	Coon Rapids, MN
5,163,662	Nov. 17, 1992	Multi-purpose machine vise	Leon M. Bernstein	Minneapolis, MN
422,048	Jan. 13, 1993	Multi-purpose machine vise	Leon M. Bernstein	Minnetonka, MN	This European patent is equivalent to US patent 5,163,662, and provides improvements to patents 4,413,818, 4,688,779 and 4,223,879.
5,242,159	Sep. 07, 1993	Hydraulic double lock vise	Leon M. Bernstein	Minneapolis, MN
5,265,990	Nov. 30, 1993	Short toolholder system	William Kuban	Columbia Heights, MN
5,310,299	May. 10, 1994	Sliding clamp	Leon M. Bernstein	Minnetonka, MN
5,374,041	Dec. 20, 1994	Vise	Leon M. Bernstein	Minnetonka, MN
5,417,555	May. 23, 1995	Rotary vane machine having end seal plates	David J. Luoma	Andover, MN	This "rotary vane machine" is a pump for compressible fluid such as air. It references patents 5,087,183 and 5,160,252, both granted to Thomas C. Edwards and not assigned.
		Rotary vane machine having end seal plates	Ingo E. Wolfe	Brooklyn Park, MN
		Rotary vane machine having end seal plates	William G. Kuban	Columbia Heights, MN
5,421,072	Jun. 06, 1995	Machining carousel	William G. Kuban	Minneapolis, MN
5,425,532	Jun. 20, 1995	Stationary vise jaw	Ingo E. Wolfe	Brooklyn Park, MN	This patent number was seen on a Kurt 8-inch vise, model D810. The patent covers the method of mounting the stationary jaw, which is held in place by bolts that are on the holding-surface side of the center-line of the jaw.
5,641,257	Jun. 24, 1997	Sliding clamp	Leon M. Bernstein	Minnetonka, MN
5,718,420	Feb. 17, 1998	Workholding wedge clamp	Leon M. Bernstein	Minnetonka, MN
835,725	Apr. 15, 1998	Vice with workpiece hold down force	Ingo E. Wolfe	Brooklyn Park, MN	This European patent is an improvement on the Kurt Anglock vise of, e.g., patent 2,880,638. "The present invention is to improve the initial hold down force on a workpiece tending to urge the workpiece against the guideway forming a workpiece support surface on the vise bed."
890,419	Apr. 21, 1999	Work stop system and jaw plate for holding the same	Ingo E. Wolfe	Brooklyn Park, MN	This European patent provides a work-stop accessory for a machine vise.
5,921,536	Jul. 13, 1999	Reversible two face jaw plate for vise or clamp	Leon M. Bernstein	Minnetonka, MN
5,971,681	Oct. 26, 1999	Drawbar guide ring with drive keys	Roger J. Schroeder	Coon Rapids, MN
		Drawbar guide ring with drive keys	Ingo E. Wolfe	Brooklyn Park, MN
D417,599	Dec. 14, 1999	Machine vise	Ingo E. Wolfe	Brooklyn Park, MN
		Machine vise	Leon M. Bernstein	Minnetonka, MN
6,012,712	Jan. 11, 2000	Double vise with self-setting clamping with the same or different size workpieces	Leon M. Bernstein	Minnetonka, MN
6,019,358	Feb. 01, 2000	Workholding wedge block with chip shield	Leon M. Bernstein	Minnetonka, MN
6,032,940	Mar. 07, 2000	Indexable jaw universal vise	Ingo E. Wolfe	Brooklyn Park, MN
6,361,034	Mar. 26, 2002	Magnetic insert in jaw plate for holding vise parallels	Ingo E. Wolfe	Brooklyn Park, MN
6,375,209	Apr. 23, 2002	Powered wheelchair	Phillip E. Schlangen	Minneapolis, MN	Theradyne Healthcare Products, a Division of Kurt Mfg. Co., manufactured wheelchairs from about 1990 until 2004. They also manufactured exercise machinery, including treadmills, a business they also exited in 2004. Kurt/Theradyne treadmills were known for their excellent construction quality while lagging on features, especially software-driven features.
6,551,220	Apr. 22, 2003	Exercise resistance device with magnets	Duane G. Schroeder	New Hope, MN	The patented device adapts a bicycle for stationary riding. It "includes a rotatable shaft and an impeller rotatable within a fluid filled sealed chamber. A rotating member is joined, for rotation with the sealed shaft. The rotating member is external to the sealed chamber and is magnetically coupled to the impeller.
6,929,275	Aug. 16, 2005	Person transport wheelchair	Phillip E. Schlangen	Minneapolis, MN
6,945,916	Sep. 20, 2005	Exercise resistance device with magnets	Duane G. Schroeder	New Hope, MN	This patent's application was a division of that for patent 6,551,220.
6,948,424	Sep. 27, 2005	Material compaction apparatus	Raymond J. Koski	Andover, MN	This compaction apparatus is used to separate a liquid used in manufacturing briquettes from the end product, and is intended to produce a reasonably pure liquid that can be reused in the manufacturing process.
		Material compaction apparatus	Duane G. Schroeder	New Hope, MN
7,163,201	Jan. 16, 2007	Two station vise	Leon M. Bernstein	Minnetonka, MN
7,481,748	Jan. 27, 2009	Locking mechanism for a bicycle trainer	Duane G. Schroeder	New Hope, MN
7,998,032	Aug. 16, 2011	Bicycle trainer	Duane G. Schroeder	New Hope, MN
7,998,033	Aug. 16, 2011	Locking mechanism for a bicycle trainer	Duane G. Schroeder	New Hope, MN
8,720,874	May. 13, 2014	Ball actuated lock pin	David L. Schmidt	Zimmerman, MN
		Ball actuated lock pin	Steven J. Tschida	Harris, MN
9,004,472	Apr. 14, 2015	Five axis machine vise	David L. Schmidt	Zimmerman, MN
9,004,476	Apr. 14, 2015	Machine vise parallel with angled edges	David L. Schmidt	Zimmerman, MN
9,095,958	Aug. 04, 2015	Self centering dual direction clamping vise	David L. Schmidt	Zimmerman, MN
9,193,040	Nov. 24, 2015	Machine vise attachment	David L. Schmidt	Zimmerman, MN	Auxiliary vise for holding a workpiece vertically on a milling machine to machine the end of the piece. The main vise jaws remain unobstructed so they can be used to hold another workpiece.
9,259,633	Feb. 16, 2016	Roller assembly having internal resistance components	Bradd R. Meyers	Brooklyn Park, MN
9,610,474	Apr. 04, 2017	Bicycle trainer with roller speed sensor	Paul Carlsen	Lino Lakes, MN
9,656,719	May. 23, 2017	Axle arrangement for a rear hub of a bicycle	Bradd R. Meyers	Brooklyn Park, MN