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Lenn C Daugherty

from Northborough, MA
Age ~73
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Also known as:
Lenn C Dougherty
Phone and address:
68 Brigham St, Northborough, MA 01532
(508) 393-3475
Related to:
Michael Bonczek, 36
Connected to:
Amy Daugherty, 43Anne A Daugherty, 74Arthur R Daugherty, 106Benna K Daugherty, 66Bret D Daugherty, 66Brett D Daugherty, 53Candis L Daugherty, 53Carl W Daugherty, 54Carleen L Daugherty, 45Carly A Daugherty, 27

Lenn Daugherty Phones & Addresses

  • 68 Brigham St, Northborough, MA 01532 (508) 393-3475

Work

Company: Diamond-roltran, llc Oct 2010 Position: Product development engineer

Education

Degree: Master of Science, Masters School / High School: Massachusetts Institute of Technology 1973 to 1975 Specialities: Mechanical Engineering

Skills

Conference Proceedings • San • Product Development • Disk

Interests

Playing Piano • Music • Tinkering • Home Work Shop

Industries

Computer Hardware

Resumes

Resumes

Lenn Daugherty Photo 1

Product Development Engineer

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Location:
Northborough, MA
Industry:
Computer Hardware
Work:
Diamond-Roltran, Llc
Product Development Engineer
Seagate Technology Jun 2006 - May 2009
Lead Mechanical Engineer, Product Development
Maxtor Apr 2001 - Jun 2006
Lead Mechanical Engineer, Product Development
Quantum Sep 1994 - Apr 2001
Lead Mechanical Engineer, Product Development
Hewlett-Packard Jul 1983 - Sep 1994
Consultant Engineer
Education:
Massachusetts Institute of Technology 1973 - 1975
Master of Science, Masters, Mechanical Engineering University of Delaware 1969 - 1973
Bachelors, Bachelor of Science, Aerospace Engineering
Skills:
Conference Proceedings
San
Product Development
Disk
Interests:
Playing Piano
Music
Tinkering
Home Work Shop

Publications

Us Patents

Rigid Magnetic Disc Memory Apparatus Employing Stepper Motor Drive And Pivotable Head Support With Temperature Compensation

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US Patent:
41639960, Aug 7, 1979
Filed:
Apr 24, 1978
Appl. No.:
5/899047
Inventors:
Robert G. Kaseta - Stow MA
Lenn Daugherty - Northboro MA
Sigmund Hinlein - Sudbury MA
Michael Feldstein - Sudbury MA
Harold Thackaberry - Franklin MA
Robert E. Barrows - Hopedale MA
Assignee:
Data General Corporation - Westboro MA
International Classification:
G11B 554
G11B 1700
G11B 548
US Classification:
360 97
Abstract:
An open loop, stepper-motor-driven, rigid magnetic disc memory apparatus for use with a data processing system. A rigid magnetic disc with high track density is driven by a stepper motor in an open-loop fashion or without servomechanism control. The memory apparatus includes: band structure including a spring bias for coupling stepper motor drive to apparatus supporting magnetic heads above and/or below the spinning disc and for temperature compensating for disc/apparatus expansion and contraction; manually operable control for zeroing the magnetic heads, moving and locking them in the disc's landing zone as, for example, while in transit, and providing a travel limit to head movement when the memory apparatus is operating; keying apparatus for preventing erroneous insertion and mis-alignment of and damage to an optical transducer relative to an optical mask arranged to spin with the disc structure; shim apparatus for precisely positioning the magnetic heads in the spin axis direction; viscously-coupled inertia apparatus for damping the stepping motor's step-rotary motion; a device for employing spinning motion associated with the disc for cooling purposes; and other structure.

Cross Band Coupling For Stepper-Motor-Driven, Rigid Magnetic Disc

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US Patent:
41647696, Aug 14, 1979
Filed:
Apr 24, 1978
Appl. No.:
5/899044
Inventors:
Robert G. Kaseta - Stow MA
Lenn Daugherty - Northboro MA
Sigmund Hinlein - Sudbury MA
Michael Feldstein - Sudbury MA
Paul Otavsky - Southboro MA
Harold Thackaberry - Franklin MA
Robert E. Barrows - Hopedale MA
Assignee:
Data General Corporation - Westboro MA
International Classification:
G11B 548
G11B 554
G11B 1700
US Classification:
360106
Abstract:
An open loop, stepper-motor-driven, rigid magnetic disc memory apparatus for use with a data processing system. A rigid magnetic disc with high track density is driven by a stepper motor in an open-loop fashion or without servomechanism control. The memory apparatus includes: band structure including a spring bias for coupling stepper motor drive to apparatus supporting magnetic heads above and/or below the spinning disc and for temperature compensating for disc/apparatus expansion and contraction; manually operable control for zeroing the magnetic heads, moving and locking them in the disc's landing zone as, for example, while in transit, and providing a travel limit to head movement when the memory apparatus is operating; keying apparatus for preventing erroneous insertion and mis-alignment of and damage to an optical transducer relative to an optical mask arranged to spin with the disc structure; shim apparatus for precisely positioning the magnetic heads in the spin axis direction; viscously-coupled inertia apparatus for damping the stepping motor's step-rotary motion; a device for employing spinning motion associated with the disc for cooling purposes; and other structure.

Rigid Magnetic Disc Memory Apparatus Including Open Loop Stepper-Motor-Driven Read/Write Head

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US Patent:
41942264, Mar 18, 1980
Filed:
Apr 24, 1978
Appl. No.:
5/899046
Inventors:
Robert Kaseta - Stow MA
Lenn Daugherty - Northboro MA
Sigmund Hinlein - Sudbury MA
Assignee:
Data General Corporation - Westboro MA
International Classification:
G11B 555
G11B 548
G11B 2108
G11B 2122
US Classification:
360106
Abstract:
A rigid magnetic disc memory apparatus for use with a data processing system. A magnetic read/write head is accurately positioned parallel and adjacent to the plane of a rigid magnetic disc with high track density by a stepper motor in an open-loop fashion without servomechanism control. The memory apparatus includes: band structure including a spring bias for coupling stepper motor drive to apparatus supporting magnetic heads above and/or below the spinning disc and for temperature compensating for disc/apparatus expansion and contraction; manually operable control for zeroing the magnetic heads, moving and locking them in the disc's landing zone as, for example, while in transit, and providing a travel limit to head movement when the memory apparatus is operating; keying apparatus for preventing erroneous insertion and mis-alignment of and damage to an optical transducer relative to an optical mask arranged to spin with the disc structure; shim apparatus for precisely positioning the magnetic heads in the spin axis direction; viscously-coupled inertia apparatus for damping the stepping motor's step-rotary motion; a device for employing spinning motion associated with the disc for cooling purposes; and other structure.

Head Adjustment Mechanism For Rigid Magnetic Disc Memory Apparatus

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US Patent:
42008948, Apr 29, 1980
Filed:
Apr 24, 1978
Appl. No.:
5/899045
Inventors:
Robert Kaseta - Stow MA
Lenn Daugherty - Northboro MA
Sigmund Hinlein - Sudbury MA
Michael Feldstein - Sudbury MA
Harold Thackaberry - Franklin MA
Assignee:
Data General Corporation - Westboro MA
International Classification:
G11B 554
G11B 548
G11B 56
G11B 2124
US Classification:
360106
Abstract:
An open loop, stepper-motor-driven, rigid magnetic disc memory apparatus for use with a data processing system. A rigid magnetic disc with high track density is driven by a stepper motor in an open-loop fashion or without servomechanism control. The memory apparatus includes: band structure including a spring bias for coupling stepper motor drive to apparatus supporting magnetic heads above and/or below the spinning disc and for temperature compensating for disc/apparatus expansion and contraction; manually operable control for zeroing the magnetic heads, moving and locking them in the disc's landing zone as, for example, while in transit, and providing a travel limit to head movement when the memory apparatus is operating; keying apparatus for preventing erroneous insertion and mis-alignment of and damage to an optical transducer relative to an optical mask arranged to spin with the disc structure; shim apparatus for precisely positioning the magnetic heads in the spin axis direction; viscously-coupled inertia apparatus for damping the stepping motor's step-rotary motion; a device for employing spinning motion associated with the disc for cooling purposes; and other structure.

Cooling Apparatus For Spinning Magnetic Disc Memory Apparatus

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US Patent:
41853105, Jan 22, 1980
Filed:
Apr 25, 1978
Appl. No.:
5/899942
Inventors:
Robert Kaseta - Stow MA
Lenn Daugherty - Northboro MA
Sigmund Hinlein - Sudbury MA
David Chastain - Boston MA
Assignee:
Data General Corporation - Westboro MA
International Classification:
G11B 554
G11B 2302
G11B 2108
US Classification:
360 97
Abstract:
An open loop, stepper-motor-driven, rigid magnetic disc memory apparatus for use with a data processing system. A rigid magnetic disc with high track density is driven by a stepper motor in an open-loop fashion or without servomechanism control. The memory apparatus includes: band structure including a spring bias for coupling stepper motor drive to apparatus supporting magnetic heads above and/or below the spinning disc and for temperature compensating for disc/apparatus expansion and contraction; manually operable control for zeroing the magnetic heads, moving and locking them in the disc's landing zone as, for example, while in transit, and providing a travel limit to head movement when the memory apparatus is operating; keying apparatus for preventing erroneous insertion and mis-alignment of and damage to an optical transducer relative to an optical mask arranged to spin with the disc structure; shim apparatus for precisely positioning the magnetic heads in the spin axis direction; viscously-coupled inertia apparatus for damping the stepping motor's step-rotary motion; a device for employing spinning motion associated with the disc for cooling purposes; and other structure.

Vibration Isolating Mount

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US Patent:
51316196, Jul 21, 1992
Filed:
Mar 9, 1988
Appl. No.:
7/166514
Inventors:
Lenn Daugherty - Northborough MA
Brian Murphy - Shrewsbury MA
Michael Strzepa - Ashland MA
Assignee:
Digital Equipment Corporation - Maynard MA
International Classification:
F16M 1300
US Classification:
248635
Abstract:
A casting of visco-elastic material is encased between rigid, flanged outer and inner sleeves to enhance its mechanical properties.

Disc Memory Apparatus Magnetic Head Carriage Manual Control

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US Patent:
41647661, Aug 14, 1979
Filed:
Apr 24, 1978
Appl. No.:
5/899043
Inventors:
Robert Kaseta - Stow MA
Lenn Daugherty - Northboro MA
Sigmund Hinlein - Sudbury MA
Michael Feldstein - Sudbury MA
Harold Thackaberry - Franklin MA
Robert E. Barrows - Hopedale MA
Assignee:
Data General Corporation - Westboro MA
International Classification:
G11B 548
G11B 554
G11B 1700
US Classification:
360 97
Abstract:
An open loop, stepper-motor driven, rigid magnetic disc memory apparatus for use with a data processing system. A rigid magnetic disc with high track density is driven by a stepper motor in an open-loop fashion or without servomechanism control. The memory apparatus includes: band structure including a spring bias for coupling stepper motor drive to apparatus supporting magnetic heads above and/or below the spinning disc and for temperature compensating for disc/apparatus expansion and contraction; manually operable control for zeroing the magnetic heads, moving and locking them in the disc's landing zone as, for example, while in transit, and providing a travel limit to head movement when the memory apparatus is operating keying apparatus for preventing erroneous insertion and mis-alignment of and damage to an optical transducer relative to an optical mask arranged to spin with the disc structure; shim apparatus for precisely positioning the magnet heads in the spin axis direction; viscously-coupled inertia apparatus for damping the stepping motor's step-rotary motion; a device for employing spinning motion associated with the disc for cooling purposes; and other structure.
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Lenn C Daugherty from Northborough, MA, age ~73 Get Report