Charles C Whittington

US Patent:

51230143, Jun 16, 1992

Filed:

Feb 27, 1990

Appl. No.:

7/486468

Inventors:

John C. Federkins - Lake Zurich IL
Charles L. Whittington - Lake Zurich IL
Hueiming Yang - Naperville IL

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

H04J 312

US Classification:

3701101

Abstract:

A method and apparatus for arranging an HDLC data link to transport a special class of data such as, for example, synchronization or other signalling informaiton, in addition to the normal data transported by the data link is provided. According to the invention, at the sending end of the link the all-1's sequence corresponding to the idle sequence between individual HDLC packets is detected. Once eight (8) consecutive 1's are detected, a desired number of 1's is removed and a like number of synchronization bits are inserted in their place. At the receiving end of the link the inserted synchronization bits are detected, removed, and a like number of 1's inserted in their place.

US Patent:

20170131701, May 11, 2017

Filed:

Sep 21, 2016

Appl. No.:

15/271989

Inventors:

- Chicago IL, US
Christopher Mark Pauly - Rolling Meadows IL, US
Charles Whittington - Naperville IL, US
Andrew Rowe - Evanston IL, US

International Classification:

G05B 19/402
C04B 11/00

Abstract:

Embodiments of a system and a method for continuously measuring cementitious board during the continuous manufacture thereof can be used in connection with the manufacture of various cementitious products, including gypsum wallboard, for example. Embodiments of a system and a method for continuously measuring cementitious board during its continuous manufacture can be used online in a continuous manufacturing process to effectively determine the degree to which cementitious slurry has set (e.g., expressed as percent hydration) at a predetermined location, such as, near a cutting station, for example. A height measuring system can be used to determine the relative amount the cementitious board sags as it passes over an unsupported span disposed between the forming station and the cutting station and to correlate the measured sag distance with a value of percent hydration of the cementitious slurry of that particular portion of the cementitious board.