David B Sweet

US Patent:

6384611, May 7, 2002

Filed:

Nov 17, 1997

Appl. No.:

08/971801

Inventors:

Randall W. Wallace - Uniontown OH
Allen D. Reich - Akron OH
David B. Sweet - Canal Fulton OH
Michael J. Terry - Stow OH
Marc E. Holyfield - Palm Beach Gardens FL

Assignee:

The B. F. Goodrich Company - Charlotte NC

International Classification:

G01R 2726

US Classification:

324671, 324699

Abstract:

An ice detector includes a pair of electrodes connected by a pair of leads to a control unit which measures the admittance between leads to thereby sense and detect the presence of ice and other contaminants formed on top thereof utilizing a detection circuit. The electrodes are integrated into patch which can be placed at different locations on an aircraft.

US Patent:

7246773, Jul 24, 2007

Filed:

May 6, 2004

Appl. No.:

10/840736

Inventors:

Paul Stoner - North Canton OH, US
Daniel P. Christy - Akron OH, US
David B. Sweet - Canal Fulton OH, US

Assignee:

Goodrich Coporation - Charlotte NC

International Classification:

B64D 15/14

US Classification:

244134D

Abstract:

An electro-thermal ice protection system for an airfoil comprises: a metal foil heater including an integral parting strip, the metal foil heater configurable to cover at least a portion of a leading edge of the airfoil with the integral parting strip disposed along an air-stagnation zone of the leading edge; and a controller coupled electrically to the metal foil heater for controlling electrical energy from a power source to the metal foil of the heater in accordance with a pulse duty-cycle and for controlling power to the parting strip of the heater to maintain the air-stagnation zone virtually free of ice formation. A method of making an exemplary metal foil heater for use in ice protection of an airfoil comprises the steps of: preparing a sheet of Titanium foil in a rectangular shape having a length substantially greater than a width thereof for covering at least a portion of the leading edge of the airfoil; applying a layer of Nickel material over an area along each width edge of the Titanium foil; applying a layer of Copper material over the Nickel layer along each width edge of the Titanium foil; and attaching conductor wires to the Copper layers at each width edge.

US Patent:

7648368, Jan 19, 2010

Filed:

Feb 11, 2008

Appl. No.:

12/029015

Inventors:

Alan John Fahrner - Canton OH, US
David B. Sweet - Canal Fulton OH, US
Steven C. Brooker - Hartville OH, US

Assignee:

Goodrich Corporation - Charlotte NC

International Classification:

H01R 39/00

US Classification:

439 17

Abstract:

An electrical-power-transfer assembly () transferring electrical power from an onboard power source to electrical deicers () on propeller blades (). The assembly () comprises a first race structure () mounted to the aircraft, a second race structure () mounted to the propeller assembly (), and rolling elements () caged in raceway(s) () situated between the race structures (). The current path established by the assembly () passes through the raceway(s) () and the rolling elements () caged therein.

US Patent:

20140071216, Mar 13, 2014

Filed:

Apr 19, 2013

Appl. No.:

13/866665

Inventors:

Jin Hu - Hudson OH, US
David B. Sweet - Canal Fulton OH, US

Assignee:

GOODRICH CORPORATION - Charlotte NC

International Classification:

B41J 11/00

US Classification:

347102

Abstract:

A heating element is provided with a conductive path pattern which can be printed in a mask-free manner (e.g., drop-on-demand) with existing printing technology. The printing step can be performed, for example, with a thermal inkjet printer, a piezoelectric inkjet printer, an aerosol jet printer, or an ultrasound printer. The ink solution can be formulated so that it establishes an electrically conductive path which is free of polymer binders.

US Patent:

44249470, Jan 10, 1984

Filed:

Jul 2, 1981

Appl. No.:

6/279884

Inventors:

Lowell J. Adams - Tallmadge OH
David B. Sweet - Hartville OH

Assignee:

The B. F. Goodrich Company - New York NY

International Classification:

B64D 1512

US Classification:

244134D

Abstract:

A device (10) for isolating from vibrational and impulse loads a power transfer unit (14) that transfers power from a helicopter electrical system to a plurality of deicing segments on the rotor blades includes a distributor (13) rotating with the rotor blades for distributing power from the power transfer unit (14) to the deicing segments, a housing (11) having an upper cylinder (24) and lower cylinder (23) the latter of which is flexibly secured to the helicopter as by a joint including ball (40), housing 11 substantially isolating the power transfer unit (14) from such loads, and a shaft (12) rotatably engaging the upper cylinder (24) for carrying the distributor (13) in rotation with the rotor blades.

US Patent:

48719358, Oct 3, 1989

Filed:

Jul 28, 1988

Appl. No.:

7/225125

Inventors:

David B. Sweet - Hartville OH
James T. Hindel - Munroe Falls OH

Assignee:

The B.F. Goodrich Company - Akron OH

International Classification:

H01R 4310
H01R 3908

US Classification:

310232

Abstract:

A slip ring assembly having a slip ring holder made of a composite dielectric material reinforced by layers of fabric is molded with the slip rings positioned in the mold, or alternately, grooves are machined in the holder for receiving the slip rings. The holder has at least one flange for mounting the assembly on a rotating part such as a spinner bulkhead of an aircraft propeller assembly. Slip rings are adhered to the composite material of the holder as a result of molding, or use of an adhesive where the grooves are machined in the holder. The metallic wire connections fastened to the slip rings by welding also serve to hold the slip rings in the grooves of the holder. The wire connections may have pins for receiving mating receptacles. Openings in the ends of the metallic wire connections are suitable for crimping wire connectors to the deicers or deicer terminals.

US Patent:

41362950, Jan 23, 1979

Filed:

Feb 24, 1977

Appl. No.:

5/771707

Inventors:

David B. Sweet - Akron OH

Assignee:

The B. F. Goodrich Company - Akron OH

International Classification:

H02K 1300

US Classification:

310239

Abstract:

A brush assembly for use with rotating slip rings wherein a plurality of brush modules composed of flat separate elements with brushes therein are assembled in a stacking order with spacers selectively placed between modules to facilitate the positioning of the brushes opposite the slip rings. Each module is molded separately to provide ease of molding, assembling and maintenance.

US Patent:

55721788, Nov 5, 1996

Filed:

Feb 16, 1994

Appl. No.:

8/197776

Inventors:

Richard J. Becker - Oxford NY
Michael J. Douglass - Oxford NY
David B. Sweet - Canal Fulton OH

Assignee:

Simmonds Precision Products, Inc. - Akron OH

International Classification:

H01F 2106

US Classification:

336120

Abstract:

A rotary transformer for aircraft deicing apparatus, the transformer including a primary winding adjacent a laminated primary core, and a secondary winding adjacent a laminated secondary core; at least one of the cores being rotatable with respect to the other core.