Robert E Keller

Address:

5607 Calico Dr, Madison, WI 53718

VIN:

5NMSH13E49H292327

Make:

HYUNDAI

Model:

SANTA FE

Year:

2009

Address:

10540 Catterskill Ct, Columbia, MD 21044

Phone:

410 730-0123

VIN:

4T1BE46KX7U115021

Make:

TOYOTA

Model:

CAMRY

Year:

2007

US Patent:

7119509, Oct 10, 2006

Filed:

Jun 1, 2005

Appl. No.:

11/143023

Inventors:

Robert Keller - Chicago IL, US
Colin Willmott - Buffalo Grove IL, US

Assignee:

The Chamberlain Group, Inc - Elmhurst IL

International Classification:

E05F 15/16

US Classification:

318286, 318266, 318469, 49 26

Abstract:

A force reversal value for an installed barrier is identified. The force reversal value is compared to a predetermined threshold. When the comparing indicates that the force reversal value exceeds the predetermined threshold, the operation of the moveable barrier operator is halted. A secondary safety device can then be installed and, responsive to the installing, the operator can be reenabled.

US Patent:

7205735, Apr 17, 2007

Filed:

Jan 16, 2004

Appl. No.:

10/760069

Inventors:

Robert Keller - Chicago IL, US
Colin Willmott - Buffalo Grove IL, US

Assignee:

The Chamberlain Group, Inc. - Elmhurst IL

International Classification:

H02P 3/00
H02P 3/20

US Classification:

318280, 318266, 318268, 318282, 318286, 318466, 318468

Abstract:

A barrier movement operator which uses an A. C. motor to move a barrier is disclosed herein. The operator senses a characteristic of barrier movement, such as motor rotation speed, to detect when the barrier contacts an obstruction. The motor and/or the circuitry for applying electrical power to the motor have been enhanced to improve the detectibility of contact with an obstruction.

US Patent:

7432676, Oct 7, 2008

Filed:

Nov 30, 2006

Appl. No.:

11/565344

Inventors:

Robert Keller - Chicago IL, US
Colin Willmott - Buffalo Grove IL, US

Assignee:

The Chamberlain Group, Inc. - Elmhurst IL

International Classification:

H02P 1/00

US Classification:

318266, 318268, 318286, 318466, 318468

Abstract:

A barrier movement operator includes an A. C. motor having a rotatable rotor connected to a barrier for movement thereof. A sensing apparatus generates motor signals representing an operational variable of the motor. The movement of the barrier is controlled by a controller, which responds to the motor signals by selectively stopping rotation of the rotor or reversing the rotation of the rotor. A power control arrangement provides energizing power to the motor by receiving AC power input substantially in the form of a sine wave and conducts portions of successive cycles of the sine wave of the received AC power to the motor to enhance the sensed operational variable to torque characteristic of the motor.

US Patent:

7786619, Aug 31, 2010

Filed:

Sep 12, 2003

Appl. No.:

10/661177

Inventors:

Steven Carl Crusius - Buffalo Grove IL, US
James J. Fitzgibbon - Batavia IL, US
Robert Keller - Chicago IL, US
Matthew Stephen - Glen Ellen IL, US

Assignee:

The Chamberlain Group, Inc. - Elmhurst IL

International Classification:

H02J 9/00

US Classification:

307 66, 307 64

Abstract:

A barrier movement operator with a backup source of DC power is disclosed. The power supply of the barrier movement operator sends current limited DC to the backup which uses the DC to charge a battery. The battery is in circuit at all times with the barrier movement operator power supply by means of a power diode and, when an AC mains power failure occurs, DC power is sent from the battery to power the barrier movement operator.

US Patent:

20030102837, Jun 5, 2003

Filed:

Nov 30, 2001

Appl. No.:

09/997892

Inventors:

Robert Keller - Park Ridge IL, US

Assignee:

The Chamberlain Group, Inc.

International Classification:

H02P001/04

US Classification:

318/466000

Abstract:

A movable barrier controller has a force control having a corresponding setting range. As operating conditions change, the barrier controller can execute a learning mode During this mode, the barrier controller operates the barrier movement motor and measures at least one parameter that corresponds to operation of the motor This measured parameter is used to determine a control value which control value is then assigned to a specific location within the setting range of the force control

US Patent:

20040207537, Oct 21, 2004

Filed:

Apr 25, 2001

Appl. No.:

09/842346

Inventors:

Robert Keller - Park Ridge IL, US
Joseph Cacciatore - Woodridge IL, US
Mark McCarthy - Schaumburg IL, US

International Classification:

G08C019/00

US Classification:

340/825720, 348/734000, 345/169000

Abstract:

A universal transmitter capable of transmitting a plurality of signals at a plurality of different modulations and frequencies which provides a simplified programming setup so that multiple signal configurations (including code format, modulation format and frequency) can be programed quickly and easily. The transmitter comprises a signal configuration input which an operator can use to select a desired signal configuration for transmission, a controller for interpreting the selected signal configuration, storing it to memory, retrieving it when the appropriate user input is depressed, and outputting it to a transmitter circuit capable of transmitting the selected signal configuration received from the controller at a predetermined modulation and frequency, and at least one user input for actuating the transmitter and identifying to the controller what signal configuration is to be transmitted by the transmitter.

US Patent:

20050285553, Dec 29, 2005

Filed:

Jun 24, 2004

Appl. No.:

10/876325

Inventors:

Eric Gregori - Lindenhurst IL, US
Robert Study - Arlington Heights IL, US
Colin Willmott - Buffalo Grove IL, US
Robert Keller - Chicago IL, US

International Classification:

H02P001/00
H02P003/00

US Classification:

318280000, 318466000

Abstract:

A barrier movement operator moves a barrier between open and closed positions. The operator receives a first request to move the barrier. The actual force required to move the barrier is measured. An obstruction to barrier movement is determined by comparing the measured actual force to a first predetermined force threshold. Responsive to the detection of an obstruction, the direction of travel of the barrier is reversed. The operation of the barrier movement operator is modified, by permitting the use of a higher force threshold in future measurements. A second request to move the barrier is received. The actual force required to move the barrier is measured a second time. An obstruction to barrier movement is detected by comparing the measured actual force with the new, higher force threshold.

US Patent:

20060109078, May 25, 2006

Filed:

Nov 22, 2004

Appl. No.:

10/994786

Inventors:

Robert Keller - Chicago IL, US
Keith Johnson - Orland Park IL, US
Robert Markwart - Rolling Meadows IL, US

International Classification:

G05B 19/00

US Classification:

340005640, 340005600, 340005710

Abstract:

A system is disclosed including a transmitter and receiver for the communication of security codes which may be validated at the receiver to operate equipment. In one embodiment, the transmitter transmits a security code at two frequencies contemporaneously to the receiver which may receive both frequencies and resolve the security code therefrom. The receiver may lock onto one frequency to the exclusion of the other frequency when parts of a security code are detected. In another embodiment, the transmitter selectively transmits security codes at a default frequency which is selected because of a recorded count of prior apparent successful transmission