Robert John Smyth

US Patent:

40810658, Mar 28, 1978

Filed:

Dec 23, 1976

Appl. No.:

5/753639

Inventors:

Robert R. Smyth - Lincoln MA
William B. Smyth - Pepper Pike OH

International Classification:

F16D 2300
F16D 2310
F16D 4700

US Classification:

192 076

Abstract:

A controlled power clutch in which a series of signals are developed to represent engine speed, engine acceleration and throttle position, as well as a signal representing the heat buildup within the clutch over a period of time. The clutch has substantially conventional mechanical components. The clutch includes a control means for controlling the engagement of the mechanical clutch elements and particularly to control the amount of partial engagement in the transition from the clutch being completely disengaged to being completely engaged, the amount of partial engagement being adjusted in response to throttle position and acceleration of the drive shaft.

US Patent:

43610609, Nov 30, 1982

Filed:

Sep 25, 1980

Appl. No.:

6/190512

Inventors:

Robert R. Smyth - Lincoln MA

International Classification:

B60K 4108
B60K 4128

US Classification:

74866

Abstract:

An electro-mechanical automatic transmission system for use in motor vehicles. The automatic transmission comprises a mechanical transmission, gear synchronizer and clutch which have been automated by the addition of electro-mechanical and pneumatic operators and an analog and digital electronic control system. The electronic control system receives operator commands regarding the mode of transmission operation (either automatic or manual) and monitors throttle position, engine speed, transmission countershaft speed, drive shaft (vehicle) speed, and rates of change of these speeds. It also receives information of the present gear ratio and stores data indicating the direction of the last shift. By utilizing this information, the electronic control system selects the optimum transmission gear ratio, effects synchronization of the selected transmission gear elements and controls clutch engagement according to a logic program.