Brian Eugene Foley

US Patent:

6510697, Jan 28, 2003

Filed:

Jun 7, 2001

Appl. No.:

09/878160

Inventors:

Maureen C. Buonpane - Mansfield MA
Philip D. Acomb - San Ramon CA
Brian D. Foley - Mansfield MA
Stephen J. Yamartino - Wayland MA
Robert M. Patterson - Burlington MA

Assignee:

Helix Technology Corporation - Mansfield MA

International Classification:

B01D 800

US Classification:

62 555, 417901

Abstract:

In a power failure recovery, the operating state before a power failure and present conditions of a cryopump are determined to initiate a regeneration or startup process. Where the refrigerator was operating before power failure, it is turned on during recovery to condense gases in the cryopump. A startup process is initiated where the cryopump was in a startup process before the power failure and present conditions of the cryopump indicate that the cryopump is sufficiently empty or clean. If the operating state and present conditions indicate that a corrosive or hazardous liquid remains in the cryopump, a regeneration process is initiated. If the cryopump was in a shutdown process before the power failure, the cryopanel of the cryopump is refrigerated to a temperature at which gases sublimate from the cryopanel. The temperature of the cryopanel is then maintained until the gases are removed. A refrigerator having a displacer with variable speed and heaters may be used to control the temperature of the cryopanel.

US Patent:

7926961, Apr 19, 2011

Filed:

Nov 20, 2008

Appl. No.:

12/274574

Inventors:

William E. Shaw - Marlborough MA, US
Michael E. DeFlumere - Winchester MA, US
Brian Foley - Nashua NH, US
Walter P Watson - Lowell MA, US

Assignee:

BAE Systems Information and Electronic Systems Integration Inc. - Nashua NH

International Classification:

G02B 23/16

US Classification:

359611, 359602, 359613

Abstract:

A telescope design is disclosed that has at least some of its interior facing surfaces configured with corner reflectors, so that a detector operatively coupled to the telescope views itself, instead of those surfaces. The corner reflectors may be on, for example, interior facing surfaces of a conventional baffle appended to the telescope and/or mirror supports or other structures inside the telescope housing that are within the detector's FOV. Likewise, the corner reflectors may be on interior facing surfaces of a baffle that is integrated into the telescope housing. In some such cases, the integrated baffle can be configured as both a baffle and a mirror support. The integrated baffle can be shaped to the F-cone between mirrors of a given telescope design, and/or configured to minimize or otherwise reduce the total obscuration of the baffle to improve the optical throughput.

US Patent:

8075144, Dec 13, 2011

Filed:

Nov 20, 2008

Appl. No.:

12/274581

Inventors:

William E. Shaw - Marlborough MA, US
Michael E DeFlumere - Winchester MA, US
Brian Foley - Nashua NH, US
Walter P. Watson - Lowell MA, US

Assignee:

BAE Systems Information and Electronic Systems Integration Inc. - Nashua NH

International Classification:

G02B 27/00

US Classification:

359601, 359399, 359611

Abstract:

A telescope design having an integrated baffle is disclosed herein. The integrated baffle is configured as both a baffle and a mirror support. The integrated baffle can be shaped to the F-cone between the primary and secondary mirrors of a given telescope design. The baffle design can be adjusted to minimize or otherwise reduce the total obscuration of the baffle to improve the optical throughput. The interior facing surfaces of the integrated baffle can be configured with corner reflectors, so that the detector views itself, instead of the baffle.