David W Walsh

US Patent:

50237977, Jun 11, 1991

Filed:

Sep 20, 1990

Appl. No.:

7/587495

Inventors:

Nicholas D. Lappos - Orange CT
David M. Walsh - Jupiter FL
David H. Sweet - Tequesta FL
Charles E. Greenberg - Jupiter FL

Assignee:

United Technologies Corporation - Hartford CT

International Classification:

F02L 908

US Classification:

364442

Abstract:

The reference speed for a helicopter engine is incremented or decremented (237, 239) in dependence upon whether a specific range (miles per unit of fuel) has increased or decreased (236a) in a current period of time compared to the next preceding period of time, separated therefrom by at least 20 seconds (243, 244) to thereby set engine speed for minimizing use of fuel over distance traveled. Fuel is sampled only during steady flight (250-255).

US Patent:

60920076, Jul 18, 2000

Filed:

Apr 29, 1998

Appl. No.:

9/069666

Inventors:

Bryan S. Cotton - Monroe CT
Christopher A. Thornberg - Newtown CT
David M. Walsh - Palm City FL
Sherman Corning - Monroe CT

Assignee:

Sikorsky Aircraft Corporation - Stratford CT

International Classification:

G05D 100

US Classification:

701 4

Abstract:

An aircraft autopilot system provides a wind correction angle which is added to the desired course to provide commanded heading, the wind correction angle being generated as a proportional and integral function of ground track error. When the aircraft is off its desired course, it can be returned to the desired course by means of a course intercept angle, added to the desired course, to provide a corrected commanded course, the course intercept angle being a proportional function of the perpendicular error (the lateral distance of the aircraft from the original course) suitably limited to some angle within 90. degree. of the desired course. The course correction angle may be generated as a proportion of the perpendicular course error determined by the degree of importance of accuracy, and may be switched over to a course directly toward a waypoint in dependence upon the importance of efficiency. The course intercept angle may be a variable proportion of the perpendicular error as a function of the importance of accuracy, and the limits on the intercept angle determined by the relative importance of efficiency.

US Patent:

60592265, May 9, 2000

Filed:

Apr 29, 1998

Appl. No.:

9/069319

Inventors:

Bryan S. Cotton - Monroe CT
David M. Walsh - Palm City FL

Assignee:

Sikorsky Aircraft Corporation - Stratford CT

International Classification:

B64L 2757

US Classification:

244 1713

Abstract:

The airspeed limiting performance envelope of a helicopter is converted to a groundspeed envelope by factoring-in the wind speed and direction. A groundspeed command for an unmanned helicopter is provided as a function of the range to the helicopter's destination. The function may be calculated so as to provide a nominal groundspeed command equal to a nominal groundspeed command limit, or the function may be a fixed function to cause the aircraft to creep toward final approach. The cosine and sine of the desired relative flight direction of the aircraft, which is equal to the true bearing to the destination minus the true heading of the aircraft, are utilized to scale the groundspeed command into a longitudinal groundspeed command and a lateral groundspeed command. If one of the groundspeed commands is over a corresponding limit, the other groundspeed command is scaled back so that the vector addition of the two commands will cause flight in the desired direction. Exceedance of either a right or left groundspeed command, as well as saturation of the right or left cyclic pitch channel will cause the aircraft heading to be yawed into the direction of the limit exceedance or channel saturation.

US Patent:

20220387118, Dec 8, 2022

Filed:

May 12, 2021

Appl. No.:

17/319065

Inventors:

- Brooklyn NY, US
DAVID N. WALSH - BROOKLYN NY, US
CHARLES PAUL PACE - BROOKLYN NY, US
MATTHEW DICICCO - BROOKLYN NY, US

International Classification:

A61B 34/30
A61B 34/10

Abstract:

A system, method, and apparatus are provided for a robotic system effecting autonomous therapy or treatment of a body having soft and/or hard tissue. A system, method, and apparatus are provided for a robotic control system having a fused sensing stream for predicting the deformation of a robotic end effector and the tissue that the end effector is in contact with using, e.g., a Finite Element Analysis (FEA) model. The model updates provide adjustment parameters for the control system to compensate for changes in the mechanical nature of the robotic end effector and the characteristics and/or movement of the tissue being treated by the robotic end effector.

US Patent:

20220388168, Dec 8, 2022

Filed:

May 12, 2021

Appl. No.:

17/319064

Inventors:

- BROOKLYN NY, US
DAVID N. WALSH - BROOKLYN NY, US
CHARLES PAUL PACE - BROOKLYN NY, US
MATTHEW DICICCO - BROOKLYN NY, US

International Classification:

B25J 9/16
B25J 13/08
A61B 34/32

Abstract:

A system, method, and apparatus for autonomous body interaction system is provided. A system and method for a robot interacting with a human or other soft or deformable body is provided for the purpose of active application of pressure to specific points or regions of the body. The system and method conducts at least one of: localizing the position of the body, detecting the configuration of the body, identifying the surface region(s) of the body, predicting the underlying anatomy of the body, assessing the state of the body, preparing a plan for manipulation of the body, and executing a predetermined and/or dynamically updated plan on the body.

US Patent:

20170305534, Oct 26, 2017

Filed:

Sep 28, 2015

Appl. No.:

15/508378

Inventors:

- Stratford CT, US
Steven D. Weiner - Orange CT, US
David M. Walsh - Palm City FL, US
Bryan S. Cotton - Poplar Grove IL, US
Kenneth C. Arifian - Brookfield Center CT, US

International Classification:

B64C 13/50
B64C 27/52
B64C 27/10
B64C 27/82
B64C 27/82

Abstract:

An aircraft includes an airframe having an extending tail, a counter rotating, coaxial main rotor assembly disposed at the airframe including an upper rotor assembly and a lower rotor assembly, and a translational thrust system positioned at the extending tail and providing translational thrust to the airframe. A fly by wire control system for the aircraft includes a flight control system configured to receive a plurality of inputs and a flight control computer to translate the inputs into commands and issue the commands to one or more controlled elements of the aircraft. A fly by wire control system for a dual coaxial rotor rotorcraft with auxiliary propulsor includes a flight control system configured to receive a plurality of inputs and a flight control computer to translate the inputs into commands and issue the commands to one or more controlled elements of the rotorcraft.

US Patent:

20160263631, Sep 15, 2016

Filed:

May 25, 2016

Appl. No.:

15/163779

Inventors:

- Stamford CT, US
George Cruz - Norwalk CT, US
David L. Walsh - Stamford CT, US

International Classification:

B08B 9/043
A46B 13/02

Abstract:

Pivoting brush heads and associated machines in which cleaning of interior tube surfaces occurs by a forward non-cleaning pass of a pivoting brush head through a tube followed by a reverse cleaning pass where the pivoting brush head engages and cleans the interior surface. The pivoting brush head has a first position for the forward pass producing minimum engagement of interior tube surfaces, and a second position for the reverse pass of full cleaning engagement with the interior tube surfaces.

US Patent:

20160221051, Aug 4, 2016

Filed:

Nov 12, 2015

Appl. No.:

14/939188

Inventors:

- Stamford CT, US
George Cruz - Norwalk CT, US
David L. Walsh - Stamford CT, US

International Classification:

B08B 9/043
B08B 1/00

Abstract:

A tube cleaning machine in which cleaning interior tube surfaces occurs by a forward non-cleaning pass of cleaning implement through work tube followed by reverse cleaning pass where implement engages and cleans interior surface. Cleaning implement has first position for forward pass producing minimum engagement of interior fire-tube surface, and a second position for reverse pass of full cleaning engagement with interior fire-tube surface. A distance indicator enables operator to select distance of forward pass of cleaning implement to correspond with tube length.