David O Curtis

US Patent:

6719334, Apr 13, 2004

Filed:

Feb 12, 2003

Appl. No.:

10/364992

Inventors:

David B. Curtis - Villa Rica GA 30180

International Classification:

E05C 1908

US Classification:

292281, 292148

Abstract:

A door latch generally comprising a latch cover and a latch slide. The latch cover comprises a upper angled section having a vertical portion and an angled portion extending therefrom, at least one first aperture defined in the vertical portion, at least one first slot defined in the angled portion, a horizontal portion having at least one second slot defined therein, and, at least one third slot defined therein substantially aligned with the first slot, a vertical middle section having a second aperture defined therein, and, a slide guide extending from one side, the slide guide having an upper spacer leg and, a lower spacer leg, an angled lower portion having a vertical edge, the vertical edge having at least one fourth aperture defined therein. The latch slide comprises a vertical section having a first end and a second end and an upper edge, a notch at the first end and, a tang extending from the second end, a horizontal section extending generally perpendicularly from at least a portion of the upper edge, the horizontal section having at least one fourth slot defined therein, an angled portion extending from one edge of the and, a pull tab extending from the extending angled portion such that the latch can slidingly engage the latch cover and reciprocatingly slide between a tang retracted position and a tang extended position.

US Patent:

20030197160, Oct 23, 2003

Filed:

Apr 23, 2002

Appl. No.:

10/127881

Inventors:

David Curtis - Villa Rica GA, US

International Classification:

B66D003/16

US Classification:

254/358000

Abstract:

A reduced pull chain hoist comprising a frame having a pair of bearings for receiving a hexagonal shaft, a chain guide, a chain pocket wheel for turning a chain and a spur gear. A conventional curtain roll-up door is operated by pulling the chain which turns the chain pocket wheel, shaft and spur gear. The spur gear engages a ring gear mounted to a drum assembly. As the spur gear turns the ring gear and drum assembly and causes the door to raise or lower.

US Patent:

20120261081, Oct 18, 2012

Filed:

Apr 14, 2011

Appl. No.:

13/086895

Inventors:

David Bryan Curtis - Villa Rica GA, US
Adam David Nyman - Villa Rica GA, US

Assignee:

Janus International Corporation - Temple GA

International Classification:

E05B 47/00
E06B 3/44
E05C 3/12

US Classification:

160133, 292214, 292201

Abstract:

An electronic locking apparatus for a rollup door, including a striker plate and a locking apparatus having a housing; a U-shaped trigger latch pivotably mounted to the housing having a notch and a spring; and a release catch pivotably mounted to the housing, a tab which can engage the notch and a spring. A solenoid is associated with a piston, which is connected to the release catch and can cause the release catch to pivot positions. Also included is a control assembly including a processor, user interface and memory storage device. A user can enter access information into the user interface, which causes the processor to actuate the solenoid, which moves the piston and causes the release catch to pivot. The release catch tab engages or disengages from the trigger latch tab to pivot and release or retain the striker plate.

US Patent:

57784906, Jul 14, 1998

Filed:

Jan 24, 1996

Appl. No.:

8/590936

Inventors:

David B. Curtis - Villa Rica GA

International Classification:

E05F 108
E05F 1154

US Classification:

16198

Abstract:

A live axle tension device (15) that is suitable for adjusting the setting of a spring (16) on a live axle door (10). The tension device comprises a spring (16) that connects to a drum wheel (14) and to a spring connecting plate (22). The spring connecting plate (22) is attached to the outside of an axle housing tube (24) that houses the axle (12). The axle housing tube (24) also has two tension plates (26) connected to it which sandwich a tension bracket (20). The tension bracket (20) is fixedly attached to a supporting structure (21) and the axle (12) is free to rotate inside the bracket. The axle housing tube (24) and the plates attached to it can rotate relative to the tension bracket (20). With the spring (16) connected to the drum wheel (14) at one end and connected to the spring connecting plate (22) at the other end, the insertion of a tension pin (32) through the tension plates (26) and the tension bracket (20) fixes the position of the two ends of the spring (16) relative to each other. With the tension pin (32) in place, the door (10) can be raised and lowered in order to determine if the tension in the spring (16) is correct.

US Patent:

60213280, Feb 1, 2000

Filed:

Dec 19, 1996

Appl. No.:

8/769650

Inventors:

David E. Curtis - Allen TX
William B. Book - Allen TX
David A. Boettger - Richardson TX
Ahmad Jalali - Plano TX

Assignee:

Northern Telecom Limited - Montreal

International Classification:

H04Q 722
H04Q 736

US Classification:

455443

Abstract:

A method and system is disclosed for triggering handoff of a call from a CDMA network to an AMPS network on which it is overlaid responsive to a determination that the CDMA RF link has degraded to such an extent that the call quality will be degraded significantly or the call is likely to be dropped is disclosed. A handoff of a call from a CDMA network to an AMPS network if, at a given time: (1) the number of forward link erasures is greater than a first maximum number of forward link erasures; or (2) the number of reverse link erasures is greater than a first maximum number of forward link erasures; or (3) the number of forward link erasures is greater than a second maximum number of forward link erasures and the forward traffic channel gain is greater than a maximum forward traffic channel gain; or (4) the number of reverse link erasures is greater than a second maximum number of reverse link erasures and the ratio of energy per bit to noise power spectral density on the reverse link ("EB/NO") is greater than a maximum EB/NO. In alternative embodiments, the present invention may be used to trigger handoff of a call from a first CDMA cell site to a second CDMA cell site or to an AMPS cell site serving a cell on which the cell served by the first CDMA cell site is not overlaid.

US Patent:

49100319, Mar 20, 1990

Filed:

Dec 19, 1988

Appl. No.:

7/286140

Inventors:

David L. Budd - Plano TX
David L. Curtis - Arlington TX
O. George Dowdie - Irving TX
Rajen S. Mehta - Irving TX

Assignee:

Frito-Lay, Inc. - Dallas TX

International Classification:

A23L 1217

US Classification:

426 96

Abstract:

Improved savory snack food items include a nonsweet, sugar-based binder composition which adheres one or more toppings to a base portion of the snack. The binder does not undesirably alter the taste of snack food items and substantially reduces separation of toppings from the snack food items during production, packaging, shipping and, most importantly, during handling by the consumer. The binder also reduces transfer of oil and fat and powders to the hands of the consumer.