David A Corbin

US Patent:

20130212895, Aug 22, 2013

Filed:

Feb 11, 2013

Appl. No.:

13/763757

Inventors:

Felipe J. Yanes - Tampa FL, US
David Corbin - Tampa FL, US

Assignee:

CERTAINTEED GYPSUM, INC. - Tampa FL

International Classification:

F26B 23/00

US Classification:

34 86

Abstract:

The present invention relates to an improved method for using heat energy in a gypsum board plant. More specifically, the method contemplates taking heat from a gasifier, or other alternative heat source, and using it to dry gypsum boards. In order to control humidity levels, this heat is delivered to one or more board dryers via a heat exchanger.

US Patent:

20210010294, Jan 14, 2021

Filed:

Sep 29, 2020

Appl. No.:

17/036102

Inventors:

- Phoenix AZ, US
David Corbin - Phoenix AZ, US

Assignee:

Hanchett Entry Systems, Inc. - Phoenix AZ

International Classification:

E05B 47/00
H01F 7/06
G07C 9/00

Abstract:

A power control system for use with an electric lock mechanism including an actuator having a coil with a particular coil impedance. The power control system comprises a power supply configured to provide an output voltage having a drive current to the actuator, a credential device powered by the power supply and configured to signal the power supply to provide the output voltage upon receiving an authorized access code, an actuator driver including a multiple-gain current-sensing circuit, and a microcontroller configured to monitor and control the power supply, credential device, actuator driver, and actuator, and determine the impedance of the coil. The microcontroller is populated by a look-up table having performance data for a plurality of coils such that the microcontroller selects a duty ratio to establish the optimum magnitude of drive current to the coil based only on the determined impedance of the coil.

US Patent:

20160307681, Oct 20, 2016

Filed:

Apr 14, 2016

Appl. No.:

15/098484

Inventors:

- Phoenix AZ, US
David Corbin - Phoenix AZ, US

Assignee:

Hanchett Entry Systems, Inc. - Phoenix AZ

International Classification:

H01F 7/06
G07C 9/00
E05B 47/00

Abstract:

A power control system for use with an electric lock mechanism having an actuator comprises a power supply to output an output voltage to the actuator. A credential device signals the power supply to output the voltage upon receiving an authorized code. A microcontroller controls the power supply, the credential device, and the actuator and may operate in an Access Mode or a Dog Mode. When in Access Mode, the actuator is unpowered and the credential device is powered until an authorized code is received and the power supply powers the actuator. The Dog Mode has an awake mode where the actuator is powered and the credential device is unpowered after the actuator remains in the powered state for a length of time. A sleep mode has the actuator unpowered and the credential device powered until an authorized code is received and the power supply powers the actuator.