Thomas Joseph Nolan

48499773, Jul 18, 1989

Aug 17, 1987

7/086013

Philip J. Baun - Andover MA
Joseph F. Carriere - Andover MA
Stephen K. Eng - Andover MA
Joseph E. Landry - Atkinson NH
Jonghee Lee - Seochotong, KP
Thomas M. Nolan - Windham NH
David C. Rhodes - Andover MA

American Telephone and Telegraph Company AT&T Bell Laboratories - Murray Hill NJ

G06F 1110

371 49

A channel bank unit for interfacing baseband user signals with a PCM carrier communications channel. The channel bank unit includes a circuit allowing verification of the transmission interity between the channel bank unit and external equipment having two-way communication with the channel bank unit. The circuit includes a first portion for evaluating the reception integrity of signals received from the external equipment and a second portion for imposing a parity sense on the signals transmitted to the external equipment that is related to the evaluation results of the first portion.

39643018, Jun 22, 1976

Oct 21, 1974

5/516503

Richard Eric Hanson - Woburn MA
Thomas Edward Nolan - Medfield MA

RCA Corporation - New York NY

G01M 1500

73116

Apparatus for and method of determining the brake torque and horsepower of an internal combustion engine without connecting an external load. Means are provided to operate the engine at full throttle and with all but one out of n of successive ignitions inhibited, the value n being selected so that the engine operates with just enough power to equal the frictional load of the engine and maintain an equilibrium speed at the upper end of the engine speed range. The engine is then operated momentarily with full ignition, and then with no ignition, during which a determination is made of the rate at which the engine decelerates through the equilibrium speed. The deceleration rate is multiplied by the known inertia of the engine to determine the friction torque of the engine at the equilibrium speed. The friction torque is multiplied by n - 1 to predict the brake torque of the engine at the equilibrium speed when operated normally with external load. Horsepower is determined by multiplying torque and speed.