William G Sharp

US Patent:

62591754, Jul 10, 2001

Filed:

Nov 18, 1999

Appl. No.:

9/443235

Inventors:

Don C. Alfano - Roscoe IL
Ronald D. Andrews - Marengo IL
Joel M. Hallet - Roscoe IL
Samuel O. Newport - Green Valley AZ
Larry E. Plunkett - Vernon IL
William L. Sharp - Poplar Grove IL
Charles H. Thompson - Stillman Valley IL

Assignee:

Dana Corporation - Toledo OH

International Classification:

H02K 706

US Classification:

310 20

Abstract:

A linear actuator includes a hollow housing that is formed from a first portion and a second portion. The first portion of the housing is formed to support all of the components of the linear actuator therein, while the second portion of the housing functions to retain such components in the first portion of the housing. An end cap is secured to the end of the elongated tube portion to close the housing. The linear actuator includes a motor that operates through a clutch assembly to selectively rotate a screw. The clutch assembly limits the amount of torque that can be transmitted from the motor to the screw assembly. A nut is mounted on the screw assembly for linear movement in response to rotation of the screw assembly. An extension tube is crimped onto the nut for effecting linear movement of a workpiece. The structure of the nut is designed to facilitate an improved crimping connection between the nut and the extension tube.

US Patent:

45448655, Oct 1, 1985

Filed:

Jun 8, 1984

Appl. No.:

6/618533

Inventors:

William G. Sharp - Rockford IL

Assignee:

Amerock Corporation - Rockford IL

International Classification:

H02P 308

US Classification:

318 53

Abstract:

A window operating system includes a motor control circuit for controlling the operation of direct current permanent magnet motors mounted on window operators associated with each window. Each of the motors on each of the windows is connected to the control circuit only by a pair of wires which both power the motor and provide information to the control circuit as to the status of motor operation. The status of motor operation is determined by monitoring the back electromagnetic force expressed by the motors. To help differentiate back electromagnetic force from supply voltage supplied to the motors, the motors are supplied with full rectified alternating current power, rather than simple direct current, so that the presence or absence of zero voltage between half waves of the voltage expressed across the motors can be monitored to determine the absence or presence of back electromotive force during those time periods.