Manufacturers Index - Kurt Manufacturing Co.
Kurt Manufacturing Co.
Minneapolis, MN, U.S.A.
Company Website: https://www.kurt.com/
Manufacturer Class:
Metal Working Machinery
This page contains information on patents issued to this manufacturer.
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on patents related to machinery and tools. A much easier user interface than the
USPTO's for finding information on machinery patents.
3,397,880
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Aug. 20, 1968
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Vise clamp
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William G. Kuban |
Minneapolis, MN |
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3,935,811
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Feb. 03, 1976
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Bolster table device for punch press
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Ingo E. Wolfe |
Minneapolis, MN |
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Bolster table device for punch press
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John O. Lenz |
Coon Rapids, MN |
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4,223,879
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Sep. 23, 1980
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Machine tool vise
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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. |
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Machine tool vise
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William G. Kuban |
Minneapolis, MN |
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4,259,815
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Apr. 07, 1981
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Blade sharpener
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William G. Kuban |
Columbia Heights, MN |
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4,265,282
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May. 05, 1981
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Tubular rotating cutter
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John O. Lenz |
Coon Rapids, MN |
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4,288,185
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Sep. 08, 1981
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Outboard tracing station for carving machine
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John O. Lenz |
Coon Rapids, MN |
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4,299,377
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Nov. 10, 1981
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Manually operated clamp effort intensifier for vise
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John O. Lenz |
Coon Rapids, MN |
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4,315,373
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Feb. 16, 1982
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Machine vise protractor
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John O. Lenz |
Coon Rapids, MN |
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4,364,695
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Dec. 21, 1982
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Carving machine with auxiliary frame
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John O. Lenz |
Coon Rapids, MN |
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4,413,818
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Nov. 08, 1983
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Combination vise
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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
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Nov. 08, 1983
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Vise clamp and swivel base vise using such clamp
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John O. Lenz |
Coon Rapids, MN |
This vise has integral t-slot clamps and can include a swivel base. |
4,481,569
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Nov. 06, 1984
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Feedback system for robot controller
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Samir A. Hoodbhoy |
Brooklyn Park, MN |
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4,496,139
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Jan. 29, 1985
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Vise clamp and swivel base vise using such clamp
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John O. Lenz |
Coon Rapids, MN |
The application for this patent was split off from that for patent 4,413,819. |
4,555,853
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Dec. 03, 1985
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Drive for position controlled linearly movable carriage
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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
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Aug. 19, 1986
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Multiple axis robot arm
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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
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Nov. 11, 1986
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Drive for position controlled linearly movable carriage
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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
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Power drawbar wrench
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John O. Lenz |
Coon Rapids, MN |
Pneumatic wrench integrated into the drawbar mechanism of a machine tool. |
4,934,674
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Jun. 19, 1990
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Two station, single action vise
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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
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Aug. 21, 1990
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Multiple air cylinder clamp for vise
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Leon M. Bernstein |
Minneapolis, MN |
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335,907
|
Jan. 08, 1992
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Low velocity energized gas particle bearing
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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
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Mar. 24, 1992
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Two-station vise with double-threaded screw
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John O. Lenz |
Coon Rapids, MN |
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5,163,662
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Nov. 17, 1992
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Multi-purpose machine vise
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Leon M. Bernstein |
Minneapolis, MN |
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422,048
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Jan. 13, 1993
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Multi-purpose machine vise
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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
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Sep. 07, 1993
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Hydraulic double lock vise
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Leon M. Bernstein |
Minneapolis, MN |
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5,265,990
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Nov. 30, 1993
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Short toolholder system
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William Kuban |
Columbia Heights, MN |
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5,310,299
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May. 10, 1994
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Sliding clamp
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Leon M. Bernstein |
Minnetonka, MN |
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5,374,041
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Dec. 20, 1994
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Vise
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Leon M. Bernstein |
Minnetonka, MN |
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5,417,555
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May. 23, 1995
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Rotary vane machine having end seal plates
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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. |
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Rotary vane machine having end seal plates
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Ingo E. Wolfe |
Brooklyn Park, MN |
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Rotary vane machine having end seal plates
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William G. Kuban |
Columbia Heights, MN |
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5,421,072
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Jun. 06, 1995
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Machining carousel
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William G. Kuban |
Minneapolis, MN |
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5,425,532
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Jun. 20, 1995
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Stationary vise jaw
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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
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Jun. 24, 1997
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Sliding clamp
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Leon M. Bernstein |
Minnetonka, MN |
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5,718,420
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Feb. 17, 1998
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Workholding wedge clamp
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Leon M. Bernstein |
Minnetonka, MN |
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835,725
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Apr. 15, 1998
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Vice with workpiece hold down force
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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
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Apr. 21, 1999
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Work stop system and jaw plate for holding the same
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Ingo E. Wolfe |
Brooklyn Park, MN |
This European patent provides a work-stop accessory for a machine vise. |
5,921,536
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Jul. 13, 1999
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Reversible two face jaw plate for vise or clamp
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Leon M. Bernstein |
Minnetonka, MN |
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5,971,681
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Oct. 26, 1999
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Drawbar guide ring with drive keys
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Roger J. Schroeder |
Coon Rapids, MN |
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Drawbar guide ring with drive keys
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Ingo E. Wolfe |
Brooklyn Park, MN |
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D417,599
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Dec. 14, 1999
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Machine vise
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Ingo E. Wolfe |
Brooklyn Park, MN |
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Machine vise
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Leon M. Bernstein |
Minnetonka, MN |
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6,012,712
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Jan. 11, 2000
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Double vise with self-setting clamping with the same or different size workpieces
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Leon M. Bernstein |
Minnetonka, MN |
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6,019,358
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Feb. 01, 2000
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Workholding wedge block with chip shield
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Leon M. Bernstein |
Minnetonka, MN |
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6,032,940
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Mar. 07, 2000
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Indexable jaw universal vise
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Ingo E. Wolfe |
Brooklyn Park, MN |
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6,361,034
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Mar. 26, 2002
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Magnetic insert in jaw plate for holding vise parallels
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Ingo E. Wolfe |
Brooklyn Park, MN |
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6,375,209
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Apr. 23, 2002
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Powered wheelchair
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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
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Apr. 22, 2003
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Exercise resistance device with magnets
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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
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Aug. 16, 2005
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Person transport wheelchair
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Phillip E. Schlangen |
Minneapolis, MN |
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6,945,916
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Sep. 20, 2005
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Exercise resistance device with magnets
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Duane G. Schroeder |
New Hope, MN |
This patent's application was a division of that for patent 6,551,220. |
6,948,424
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Sep. 27, 2005
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Material compaction apparatus
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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. |
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Material compaction apparatus
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Duane G. Schroeder |
New Hope, MN |
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7,163,201
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Jan. 16, 2007
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Two station vise
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Leon M. Bernstein |
Minnetonka, MN |
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7,481,748
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Jan. 27, 2009
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Locking mechanism for a bicycle trainer
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Duane G. Schroeder |
New Hope, MN |
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7,998,032
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Aug. 16, 2011
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Bicycle trainer
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Duane G. Schroeder |
New Hope, MN |
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7,998,033
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Aug. 16, 2011
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Locking mechanism for a bicycle trainer
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Duane G. Schroeder |
New Hope, MN |
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8,720,874
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May. 13, 2014
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Ball actuated lock pin
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David L. Schmidt |
Zimmerman, MN |
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Ball actuated lock pin
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Steven J. Tschida |
Harris, MN |
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9,004,472
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Apr. 14, 2015
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Five axis machine vise
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David L. Schmidt |
Zimmerman, MN |
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9,004,476
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Apr. 14, 2015
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Machine vise parallel with angled edges
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David L. Schmidt |
Zimmerman, MN |
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9,095,958
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Aug. 04, 2015
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Self centering dual direction clamping vise
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David L. Schmidt |
Zimmerman, MN |
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9,193,040
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Nov. 24, 2015
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Machine vise attachment
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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
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Feb. 16, 2016
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Roller assembly having internal resistance components
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Bradd R. Meyers |
Brooklyn Park, MN |
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9,610,474
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Apr. 04, 2017
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Bicycle trainer with roller speed sensor
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Paul Carlsen |
Lino Lakes, MN |
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9,656,719
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May. 23, 2017
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Axle arrangement for a rear hub of a bicycle
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Bradd R. Meyers |
Brooklyn Park, MN |
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