John M Morrell

US Patent:

20040264519, Dec 30, 2004

Filed:

Jun 24, 2003

Appl. No.:

10/602514

Inventors:

John Morrell - Tewksbury MA, US

International Classification:

H01S003/04

US Classification:

372/035000, 372/034000

Abstract:

A cooling system for an imaging device having a light source for exposing a media in which the cooling system comprises a filter for purifying coolant flowing through the cooling system and a filter bypass for limiting the purity of the coolant. In this way, the coolant, such as water, is prevented from becoming too pure, such that it begins to attack or etch the metal components in the coolant loop in the cooling system. This problem typically arises in the closed loop DI-filtered systems is that the water coolant becomes too pure. It is known that if water becomes more pure than approximately 10 MegaOhms (M ), referring to the water's resistance to electrical current which increases with increasing purity, the water can actually begin to etch metal such as copper in copper pipes of the loop.

US Patent:

20090105908, Apr 23, 2009

Filed:

Oct 20, 2008

Appl. No.:

12/254178

Inventors:

Robert Casey - Saugus MA, US
Michael T. Gansler - Candia NH, US
John B. Morrell - Hamden CT, US
Michael F. Kaufman - New Boston NH, US
Jon M. Stevens - Manchester NH, US

Assignee:

Segway Inc. - Bedford NH

International Classification:

B62D 6/00

US Classification:

701 41

Abstract:

An apparatus and method for controlling a steering command of a vehicle is provided. A deadband value based on a current state of a transporter is applied to a roll compensated steering command to control steering of the vehicle. A gain is applied to a steering command to control steering of the vehicle.