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David Eley
Location:
United States
David L Eley, Age 77228 Dancette Dr, Harrison, IL 61072
David Eley Phones & Addresses
228 Dancette Dr, Rockton, IL 61072 (815) 922-2475
Beloit, WI
12014 Waxwing Ct, Roscoe, IL 61073 (815) 623-6087
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David L Eley
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Work
Position:
Healthcare Support Occupations
Education
Degree:
Associate degree or higher
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Mentions for David L Eley
Publications & IP owners
Us Patents
Bending Machine With Digital Electronic Control Of Bend Angle
US Patent:
4719577, Jan 12, 1988
Filed:
May 29, 1985
Appl. No.:
6/738726
Inventors:
David L. Eley - Beloit WI
International Classification:
B21D 900
B21D 700
B41F 4500
B21D 700
B41F 4500
US Classification:
364474
Abstract:
A bending machine with a rotatable bending shoe for bending conduit and pipe includes a digital electronic control system with memory for providing accurate bending control and accurate repeat bending of successive conduits or pipes to substantially the same angle. A sensor is provided for determining increment degrees of rotation of a gear in the bending shoe drive train with the increments correlated to a particular degree of rotation of the bending shoe. The sensor signals are input to counting and comparator devices to terminate bending after the shoe rotates the degrees stored in memory for a particular bend.
Dual Capstan Electric Puller
US Patent:
D379651, May 15, 1990
Filed:
Mar 5, 1987
Appl. No.:
7/022324
Inventors:
David L. Eley - Beloit WI
Jeffrey J. Plummer - Rockford IL
George P. Gill - Loves Park IL
Jeffrey J. Plummer - Rockford IL
George P. Gill - Loves Park IL
Assignee:
Greenlee Textron Inc. - Rockford IL
US Classification:
D34 33
Variable Speed Motor Control
US Patent:
4823057, Apr 18, 1989
Filed:
Mar 5, 1987
Appl. No.:
7/022237
Inventors:
David L. Eley - Beloit WI
Assignee:
Greenlee Textron Inc. - Rockford IL
International Classification:
H02P 516
US Classification:
318432
Abstract:
The motor control for a universal or D. C. electric motor controlled by opposing SCRs in parallel includes a comparator for controlling timing of firing of the SCRs based on a comparison of a sensed motor speed error signal and a synchronous ramp and also includes a circuit for sensing motor current as representative of motor torque and generating a motor shut-down signal when the sensed torque or current is greater than a setpoint value. When the shut-down signal is generated, the sensed speed error signal is overridden or prevented from being input to the comparator by deactivation (reverse biasing) of a current switch (diode) and results in the SCRs being deactivated. When the motor is restarted, a soft start circuit provides an alternate gradually increasing speed signal to the comparator in lieu of the sensed speed error signal for a selected short time after restart to gradually increase motor speed. After the selected time, the alternate speed signal itself reactivates the current switch (diode) by removing the reverse bias to allow the sensed speed error signal to again be input to the comparator to control motor speed. A novel integral differential amplifier is also provided as part of the speed error signal circuit.
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