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Jeffry A Leblanc

from Aptos, CA
Age ~74
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Also known as:
Jeffry Arnold Le Blanc, Jeffry A Blanc, Jeff Leblanc, Jefry Le Blanc, Jeffery La Blanc
Related to:
Wanda D Kelley, 79Galer Kelley, 80Diane Kelley, 60Shannon L Kelley, 48
Connected to:
Aldea M Leblanc, 89Alex J Leblanc, 51Alexandra L Leblanc, 52Alfred J Leblanc, 50Alphonse Leblanc, 86Alphonso W Leblanc, 51Anca D Leblanc, 59Angeline B Leblanc, 86Angelle M Leblanc, 52Annie L Leblanc, 44

Jeffry Leblanc Phones & Addresses

  • Aptos, CA
  • Capitola, CA
  • Soquel, CA
  • 6565 Oak Ridge Rd, Aptos, CA 95003

Work

Position: Food Preparation and Serving Related Occupations

Education

Degree: Associate degree or higher

Resumes

Resumes

Jeffry Leblanc Photo 1

Jeffry Leblanc

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Location:
6565 Oak Ridge Rd, Aptos, CA 95003
Industry:
Computer Hardware
Work:
The Moment since Mar 2009
Unemployed
Seagate Technology Oct 1992 - Mar 2009
Sr Staff Engr
Seagate Technology Mar 1983 - Aug 1991
Sr. Staff Engineer and Engineering Manager
Shugart Associates Jun 1981 - Mar 1983
Staff Engineer and Engineering Manager
Memorex Mar 1978 - Jun 1981
Manufacturing Engineer
Education:
California Polytechnic State University-San Luis Obispo 1969 - 1973
BS IE, Production/Manufacturing Engineering Soquel High 1965 - 1969
Skills:
Six Sigma
Injection Molding
Powerpoint
Engineering Management
Hard Drives
Lean Manufacturing
Manufacturing Engineering
Cross Functional Team
Debugging
3D Design
Manufacturing Operations
Test Equipment
Engineering Support
Fmea
Excel
Process Improvement
Engineering
Product Design
Mechanical Engineering
Dfm
Minitab
Microsoft Word
Finite Element Analysis
Process Simulation
Program Management
Testing
Microsoft Excel
Design For Manufacturing
Process Development
Cross Functional Team Leadership
Manufacturing
Design of Experiments
Drafting
Ideas
Crystal Ball
Failure Analysis
Simulations
Design
Product Development
Spc
Process Engineering
Word
Continuous Improvement
R&D
Doe
Jeffry Leblanc Photo 2

Jeffry Leblanc

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Publications

Us Patents

Fluid Dynamic Bearing Secondary Capillary Seal Reservoir

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US Patent:
6669369, Dec 30, 2003
Filed:
Oct 9, 2002
Appl. No.:
10/267704
Inventors:
Robert Alan Nottingham - Santa Cruz CA
Norbert Steven Parsoneault - Scotts Valley CA
Jeffry Arnold LeBlanc - Aptos CA
Troy Michael Herndon - San Jose CA
Assignee:
Seagate Technology LLC - Scotts Valley CA
International Classification:
F16C 3374
US Classification:
384110, 384107
Abstract:
The present invention relates to the field of fluid dynamic bearings. Specifically, the present invention provides a secondary fluid reservoir for the fluid used in a fluid dynamic bearing in a high-speed spindle motor assembly.

Easy-Fill, Easy-Press Conical Bearing

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US Patent:
6672766, Jan 6, 2004
Filed:
Jun 28, 2001
Appl. No.:
09/896007
Inventors:
Robert A. Nottingham - Santa Cruz CA
Jeffry A. LeBlanc - Aptos CA
Troy M. Herndon - San Jose CA
Assignee:
Seagate Technology LLC - Scotts Valley CA
International Classification:
F16C 3206
US Classification:
384110, 384132
Abstract:
The cone which is pressed onto or otherwise affixed to the shaft to cooperate with the sleeve to form a conical hydrodynamic bearing is modified to provide a flat surface at the axially outer end of the cone most distant from the conical surface which is used to form the conical bearing in cooperation with the bearing seat of the sleeve and the intervening fluid. The sleeve surface facing the second angled surface of the bearing cone is modified to diverge more sharply away from the second surface of the cone, or to simply be spaced further away. In this way, a larger reservoir is formed, diminishing the possibility of oil evaporation and oil loss. Finally, a relatively flat shield is supported from the sleeve overlying the flat upper surface of the cone. The divergence of the upper bearing cone surface from the surrounding sleeve also allows for filling the bearing before the shield is installed. This solves the problem of trying to fill the bearing through a small hole either directly in the protective shield or between the protective shield and the outer diameter of the shaft.

Exclusion Seal For Fluid Dynamic Bearing Motors

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US Patent:
6702465, Mar 9, 2004
Filed:
Dec 13, 2001
Appl. No.:
10/017196
Inventors:
Alan Lyndon Grantz - Aptos CA, 95003
Robert Alan Nottingham - Santa Cruz CA, 95062
Jeffry Arnold LeBlanc - Aptos CA, 95003
Troy Michael Herndon - San Jose CA, 95118
Norbert Steve Parsoneault - Scotts Valley CA, 95066
Saul Ceballos - Watsonville CA, 95076
Hans Leuthold - Santa Cruz CA, 95060
Alexander Gredinberg - San Jose CA, 95124
International Classification:
F16C 3206
US Classification:
384110
Abstract:
A method and apparatus for a conical bearing is provided having a seal shield having an angle supported from the hub or sleeve which surrounds the shaft, and extending at an angle toward the outer surface of the shaft and spaced slightly away from the upper angular surface of the cone. As the cone and seal shield rotate relative to one another, fluid is drawn toward the lower inner region of the reservoir. However, due to shock or the like, some fluid may reach the radial gap between the end of the shield and the outer surface of the shaft, therefore, a ring is either incorporated into the upper end of the cone or pressed against the axial outer end of the cone, defining an axial gap which is smaller than the radial gap. In a preferred form of the invention, the ratio is about 1:3. When oil is introduced to either of the two gaps (typically by shock), it transfers or typically comes to rest in the axial gap, since the capillary attractive force increases as the gap size decreases; therefore, with the axial gap being smaller than the radial gap the oil will tend to transfer to the axial gap.

Fluid Dynamic Bearing Thermal Compensation

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US Patent:
6731456, May 4, 2004
Filed:
Mar 11, 2002
Appl. No.:
10/095796
Inventors:
Norbert Steven Parsoneault - Scotts Valley CA
Troy Michael Herndon - San Jose CA
Robert Alan Nottingham - Santa Cruz CA
Jeffry Arnold LeBlanc - Aptos CA
Alan Lydon Grantz - Aptos CA
Assignee:
Seagate Technology LLC - Scotts Valley CA
International Classification:
G11B 1702
US Classification:
360 9908, 360 9807, 310 90, 384110, 384905
Abstract:
A hub and shaft are provided which are mounted for relative rotation by providing two conical bearings spaced apart along the shaft, and a bearing seat facing each conical bearing. Fluid is maintained in the gap between each cone and the facing bearing seat, supporting the cone and seat for relative rotation. The outer surface of the bearing seat is insulated from the remainder of the motor by a thermal insulator which extends at least part way along the outer surface of the seats. This insulator is effective at keeping the bearings warm even in a relatively low temperature environment in which the motor may be used. The insulator may comprise a cylindrical ceramic or similar low thermal conductivity material extending at least part way along the axial distance outside of the bearing cones. Alternatively, an air space may be defined in the outer surface of the bearing seat, extending at least part way between the bearing cones.

Lamination Features For Stator Grounding

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US Patent:
6762529, Jul 13, 2004
Filed:
May 24, 2001
Appl. No.:
09/865240
Inventors:
Troy M. Herndon - San Jose CA
Jeffry A. LeBlanc - Aptos CA
Assignee:
Seagate Technology LLC - Scotts Valley CA
International Classification:
H02K 300
US Classification:
310216, 310 67 R, 310 71, 310 45
Abstract:
A spindle motor incorporates a shaft having a known outer diameter and a stator having a known inner diameter which is slightly larger than the outer diameter of the shaft so that it may slip over the shaft. Die cut sharp features are defined in the inner diameter of the stator laminations. These features extending radially inward from the generally circular inner diameter of the stator laminations so that these features establish an interference fit with the outer surface of the shaft which the structure is mounted. When the stack is pressed onto the outer surface of the shaft to which it is mounted and supported, the coating on the stack will scrape off, thus establishing a metal-to-metal contact between the stack and the adjoining outer surface of the shaft. As a result of this, a tight interference fit will be established between the inner surface of the stack and the outer surface of the shaft, thus both radially fixing the stack on the shaft, and grounding the stack to the shaft.

Stiffness Compensation For A Thermally Compensated Fluid Dynamic Bearing

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US Patent:
6822825, Nov 23, 2004
Filed:
Dec 28, 2001
Appl. No.:
10/034711
Inventors:
Troy Herndon - San Jose CA
Jeffry LeBlanc - Aptos CA
Robert Nottingham - Santa Cruz CA
Assignee:
Seagate Technology LLC - Scotts Valley CA
International Classification:
G11B 1702
US Classification:
360 9908, 360 9807, 310 67 R
Abstract:
The present invention provides a hydrodynamic bearing design which is simple and reliable in design, while incorporating a shaft with a plug of high elastic modulus material fitted within a cylinder of a lower elastic modulus material than that of the plug, thereby compensating for temperature variations while maintaining radial stiffness of the system over a wide range of temperatures. The design is relatively inexpensive and easy to replicate in a high volume manufacturing process.

Fluid Dynamic Bearing Motor Configured With An Integrated Counterplate To Contain Bearing Fluid

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US Patent:
6900568, May 31, 2005
Filed:
Dec 1, 2003
Appl. No.:
10/725700
Inventors:
Jeffry Arnold LeBlanc - Aptos CA, US
Norbert Steven Parsoneault - Scotts Valley CA, US
Robert Alan Nottingham - Santa Cruz CA, US
Troy Michael Herndon - San Jose CA, US
Assignee:
Seagate Technology LLC - Scotts Valley CA
International Classification:
H02K007/08
US Classification:
310 90, 384100, 384119
Abstract:
A fluid dynamic bearing motor assembly is described. In one embodiment, the assembly includes a shaft, a sleeve configured to rotate about a rotational axis, and a counterplate attached to the sleeve. The counterplate includes a radial section and a axial section, which is attached to the radial section and partially defines a labyrinth to remove bearing fluid from a region between the shaft and the axial section.

Conical Hybrid Fdb Motor

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US Patent:
6946764, Sep 20, 2005
Filed:
Dec 23, 2002
Appl. No.:
10/328276
Inventors:
Jeffry Arnold LeBlanc - Aptos CA, US
Alan Lyndon Grantz - Aptos CA, US
Troy Michael Herndon - San Jose CA, US
Michael David Kennedy - Boulder Creek CA, US
Robert Alan Nottingham - Santa Cruz CA, US
Anthony Joseph Aiello - Aptos CA, US
Klaus Dieter Kloeppel - Watsonville CA, US
Paco Flores - Felton CA, US
Assignee:
Seagate Technology LLC - Scotts Valley CA
International Classification:
H02K005/16
US Classification:
310 90, 310 905
Abstract:
A disc drive design comprising a shaft and sleeve supported for relative rotation by a journal type fluid dynamic bearing utilizing grooves on one of the shaft or sleeve surfaces. At least a part of the shaft is generally conical in cross-section, so that a downward force component is developed to balance upward pressure on end of shaft; this conical region typically includes a fluid dynamic bearing (grooves being on either the shaft or sleeve). A grooved pattern of a design similar to that usually found on a thrust plate may be defined on an axial end surface of the shaft or the counterplate facing the axial end of the shaft, so that thrust is created to maintain separation of the end of the shaft and the facing counterplate plate during relative rotation. A diamond-like coating (DLC) may be applied to the counterplate surface or to the end of the shaft; further, either the counterplate or shaft may be made out of ceramic material to enhance this performance. This coating may also be applied to the conical surface of the shaft or the facing surface of the sleeve.
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Jeffry A Leblanc from Aptos, CA, age ~74 Get Report