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Mark Barnholt Phones & Addresses

  • 14517 Walnut St, Fort Wayne, IN 46814 (260) 625-6930
  • 14517 Walnut Run, Fort Wayne, IN 46814 (260) 625-6930
  • 5437 Wald Rd, Fort Wayne, IN 46818 (219) 489-9427 (260) 489-9427
  • North Manchester, IN

Work

Position: Professional/Technical

Education

Degree: Associate degree or higher

Publications

Us Patents

Differential Axle Assembly With Adjustable Gear Offset

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US Patent:
6364803, Apr 2, 2002
Filed:
May 11, 2000
Appl. No.:
09/568582
Inventors:
Mark C. Barnholt - Fort Wayne IN
Thomas L. Nahrwold - Ossian IN
John E. Pressler - Roanoke IN
Edward E. Stuart - Payne OH
David J. Young - Kimmell IN
Assignee:
Spicer Technology, Inc. - Fort Wayne IN
International Classification:
F16H 4810
US Classification:
475246, 475230, 74396
Abstract:
An adjustable pinion offset in a differential axle assembly. The offset between a pinion gear and shaft relative to a ring gear in the differential axle assembly is adjustable due to an eccentric mounting of the pinion assembly relative to the differential housing containing the ring gear. The pinion shaft is eccentrically mounted within a bore of the differential housing such that a simple rotation of the pinion assembly about the eccentric pilot mounting adjusts the position of the pinion shaft with respect to the ring gear to adjust pinion offset. Once properly positioned, the pinion assembly is secured to the differential housing to maintain the desired position. This invention substantially reduces the noise associated with gear offset error.

Pinion Shaft For Differential Assembly

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US Patent:
6527663, Mar 4, 2003
Filed:
Jun 1, 2001
Appl. No.:
09/870768
Inventors:
Patrick Ballinger - Fort Wayne IN
Mark Barnholt - Fort Wayne IN
Ben Passino - Fort Wayne IN
Assignee:
Spicer Technology, Inc. - Fort Wayne IN
International Classification:
F16H 4808
US Classification:
475230, 475331, 475336
Abstract:
A novel arrangement of a pinion shaft for a differential assembly having a substantially H-shaped cross-section with added oiling radii. The H-shaped pinion shaft provides substantially reduced weight of the differential pinion shaft, increases a strength-to-weight ratio, and improves lubrication.

Method For Manufacturing Banjo-Type Axle Housings

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US Patent:
6609649, Aug 26, 2003
Filed:
Jul 13, 2001
Appl. No.:
09/903679
Inventors:
Mark Charles Barnholt - Fort Wayne IN
James A. Krisher - Fort Wayne IN
Assignee:
Torque-Traction Technologies, Inc. - Holland OH
International Classification:
B23K 3110
US Classification:
228171, 2281734, 298972, 29557
Abstract:
A method for manufacturing a banjo-type drive axle housing for a motor vehicle is disclosed. The first step is the operation of forming the substantially identical upper and lower half members having a U-shaped cross-section along entire length thereof with radially extending wall sections. Each of the members is metal formed, such as by stamping or forging, from a blank sheet of steel. Next step is to select a desired box-section of an axle beam portions, and a desired size of an opening in a central portion of the axle housing. Then, if necessary, the wall sections of the housing half members are trimmed so that when assembled said housing half members provide the desired box section and size of the opening in the central portion of the axle housing. Finally, the trimmed housing half members are welded to each other to produce the axle housing.

Inertia Brake

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US Patent:
8186486, May 29, 2012
Filed:
Dec 1, 2008
Appl. No.:
12/325656
Inventors:
Michael L. Bassett - Auburn IN, US
Troy S. Reinoehl - Golden CO, US
Barry T. Adams - Leo IN, US
Mark C. Barnholt - Fort Wayne IN, US
Robb E. Grostefon - Fort Wayne IN, US
Dean A. Geiger - Churubusco IN, US
Steven J. Rynearson - Angola IN, US
Steven E. McCutcheon - Fort Wayne IN, US
Kevin F. Schlosser - Auburn IN, US
Assignee:
Eaton Corporation - Cleveland OH
International Classification:
F16D 67/02
US Classification:
188 732, 188171, 192 13 R, 192109 R
Abstract:
An inertia brake assembly is disclosed. In an embodiment, the inertia brake includes a rotor hub subassembly and an inertia brake subassembly. The inertia brake subassembly includes a first reaction plate arranged opposite a first side of the rotor hub assembly, a second reaction plate arranged opposite a second side of the rotor hub assembly, and one or more connector subassemblies connecting the first reaction plate to the second reaction plate. The one or more connector subassemblies include at least one or more resilient straps, and a spacer disposed between the one or more resilient straps and one of the first and second reaction plates. The spacer is arranged about a diameter of the rotor hub subassembly. In an embodiment, the inertia brake assembly includes a sleeve. An inertia brake subassembly is also disclosed.

Isolation Of Clutch Departure Control Sleeve

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US Patent:
20100133057, Jun 3, 2010
Filed:
Dec 1, 2008
Appl. No.:
12/326013
Inventors:
Mark C. Barnholt - Fort Wayne IN, US
International Classification:
F16D 13/75
US Classification:
192 70252
Abstract:
A torque transmitting apparatus includes a cover portion generally defined by a first axis. The cover portion includes a plurality of adjustment apertures. The apparatus also includes a flywheel coupled to the cover portion for rotation therewith, wherein the flywheel is restrained from axial movement relative to the cover portion. The apparatus also includes a pressure plate coupled to the cover portion for rotation therewith. The pressure plate is axially moveable relative to the cover portion. The apparatus also includes a clutch disk at least partially interposed between the flywheel and the pressure plate. The apparatus also includes a plurality of first members extending between the pressure plate and the cover. Each first member exerts a biasing outward radial force on the adjustment aperture to resist axial movement therebetween. The apparatus also includes a plurality of biasing members. At least one biasing member is interposed between one of the first members and the flywheel. Each biasing member exerts a biasing axial force on the pressure plate thereby biasing the pressure plate toward the flywheel while absorbing undesirable impact forces to isolate the departure control sleeves.

Hydraulic Clutch Assembly

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US Patent:
20130153355, Jun 20, 2013
Filed:
Dec 16, 2011
Appl. No.:
13/327868
Inventors:
Martin Eugene Kummer - Auburn IN, US
Mark Charles Barnholt - Fort Wayne IN, US
Assignee:
EATON CORPORATION - Cleveland OH
International Classification:
F16D 13/72
F16D 13/52
US Classification:
192 481, 192 7012, 19211331
Abstract:
A wet clutch assembly has an inner housing configured for rotation with an input torque member to the clutch assembly. The inner housing has a series of splines to support a portion of the plates in a clutch pack. Each spline defines a single aperture in fluid communication with at least one plate of the clutch pack, and apertures on adjacent splines are offset to distribute cooling fluid nearly equally between friction surfaces. Uniform flow distribution ensures efficient use of cooling fluid and prevents overheating of plates receiving lesser fluid flow.

Clutch Backer Plate With Recessed Rivets

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US Patent:
20130299301, Nov 14, 2013
Filed:
Apr 30, 2013
Appl. No.:
13/873626
Inventors:
Timothy Bernard Allmandinger - Roanoke IN, US
Brian William Franke - Hamilton IN, US
Mark Charles Barnholt - Fort Wayne IN, US
Assignee:
EATON CORPORATION - Cleveland OH
International Classification:
F16D 13/64
US Classification:
192107 R
Abstract:
A driven disc assembly is provided wherein a clutch disc has enlarged holes for connection of opposing backing plates. The backing plates have semi-pierced sections that are insertable within mounting holes of the clutch disc. The thickness of the backing plates are enlarged from their normal thickness causing a top surface of the backing plates to axially clear heads of conventional rivets. The thickness of the friction buttons on the backing plates can then be reduced to their minimal effective use thickness.

Clutch Backer Plate With Recessed Rivets

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US Patent:
20130299302, Nov 14, 2013
Filed:
May 10, 2013
Appl. No.:
13/891724
Inventors:
Timothy Bernard Allmandinger - Roanoke IN, US
Brian William Franke - Hamilton IN, US
Mark Charles Barnholt - Fort Wayne IN, US
Assignee:
EATON CORPORATION - Cleveland OH
International Classification:
F16D 13/68
US Classification:
192107 R
Abstract:
A driven disc assembly is provided. The backing plates have right angle depression sections that surround mounting holes of a clutch disc. The thickness of the backing plates are enlarged from their normal thickness causing a top surface of the backing plates to axially clear heads of conventional rivets. The thickness of the friction buttons on the backing plates can then be reduced to their minimal effective use thickness.
Mark C Barnholt from Fort Wayne, IN, age ~65 Get Report