Jeffrey T Hastings

US Patent:

7348104, Mar 25, 2008

Filed:

Oct 2, 2003

Appl. No.:

10/677173

Inventors:

Dario Gil - Cambridge MA, US
Jeffrey T. Hastings - Cambridge MA, US
James G. Goodberlet - Melrose MA, US
Rajesh Menon - Boston MA, US
David J. Carter - Cambridge MA, US
Henry I. Smith - Sudbury MA, US

Assignee:

Massachusetts Institute of Technology - Cambridge MA

International Classification:

G02B 27/44
G02B 27/42
G02B 5/18

US Classification:

430 4, 430 11, 430394, 359558, 359565, 359573

Abstract:

A method is disclosed for forming an array of focusing elements for use in a lithography system. The method involves varying an exposure characteristic over an area to create a focusing element that varies in thickness in certain embodiments. In further embodiments, the method includes the steps of providing a first pattern via lithography in a substrate, depositing a conductive absorber material on the substrate, applying an electrical potential to at least a first portion of the conductive absorber material, leaving a second portion of the conductive material without the electrical potential, and etching the second portion of the conductive material to provide a first pattern on the substrate that is aligned with the first portion of the conductive absorber material.

US Patent:

7861625, Jan 4, 2011

Filed:

Oct 24, 2008

Appl. No.:

12/257429

Inventors:

Christopher L. Greenwald - Waban MA, US
Jeffrey P. Hastings - Hanover NH, US

Assignee:

Pro-Cut Licensing Company, LLC - West Lebanon NH

International Classification:

B23B 25/06
B23B 5/04

US Classification:

82112, 82118

Abstract:

A dynamic alignment monitoring system allows an operator to monitor the misalignment of an on-vehicle disk brake lathe with respect to a vehicle axis about which the disk to be machined rotates, and can allow the operator to discontinue further alignment when appropriate in order to speed the overall time of the alignment process. The system processes signals from an angular rate sensor and a tachometer, using a scaling routine to derive a LRO value corresponding to the LRO of the disk which would result from machining in the current alignment condition. A representation of the derived LRO value is displayed to the operator. An operator override can allow the operator to discontinue further alignment adjustments when an acceptable alignment condition is indicated. The system can aid the operator by also presenting a representation of an acceptable LRO value for the particular vehicle being serviced.

US Patent:

8245609, Aug 21, 2012

Filed:

Feb 3, 2010

Appl. No.:

12/699091

Inventors:

Christopher L. Greenwald - Waban MA, US
Jeffrey P. Hastings - Hanover NH, US

Assignee:

Pro-Cut Licensing Company, LLC - West Lebanon NH

International Classification:

B23B 5/04
B23B 1/00

US Classification:

82112, 82 111, 82 47, 82118

Abstract:

A reporting system, employing a microprocessor, tracks the operation of an on-vehicle brake lathe and provides records of the resurfacing operations performed by the lathe. Identification of the vehicle and wheel position of a brake disk to be resurfaced are inputted using an operator interface, and stored in a temporary memory. When tool bits of the lathe are positioned to set a depth of cut, a thickness monitor indicates the resulting thickness for the brake disk, which is compared to a minimum thickness specification for the inputted vehicle and wheel position to determine whether the disk can be resurfaced to meet the specification. If so, a cutting operation evaluator monitors a continuity checker that is responsive to contact of the tool bits and the disk to determine when the resurfacing operation is complete, at which time the collected data can be reported.