Kenneth Roy Erikson

US Patent:

6415673, Jul 9, 2002

Filed:

Aug 21, 2000

Appl. No.:

09/643051

Inventors:

Keith W. Erikson - Hollis NH
Kenneth W. Erikson - Amherst NH

Assignee:

Kerk Motion Products, Inc. - Hollis NH

International Classification:

F16H 2702

US Classification:

74 8942, 7442494, 7442495

Abstract:

An anti-backlash nut is assembled on a reinforced lead screw for bilateral motion lengthwise of the lead screw as the screw is rotated. A hollow, elongate reinforcing rail extends lengthwise of and surrounds the lead screw. A slot in the rail extends lengthwise of the central axis of the lead screw. The anti-backlash nut comprises two separate portions, each portion having a tongue which extends radially through the slot and has threads engageable with the threads of the lead screw for moving both nut portions in reciprocating motion lengthwise of the rail when the screw is rotated. Spring means are employed for forcing the nut portions apart to urge the flanges of their threads into forcible engagement with the threads of the lead screw to prevent backlash, while the anti-backlash nut translates laterally along the reinforcing rail.

US Patent:

6422101, Jul 23, 2002

Filed:

Mar 19, 2001

Appl. No.:

09/812058

Inventors:

Keith W. Erikson - Hollis NH
Kenneth W. Erikson - Amherst NH

Assignee:

Kerk Motion Products, Inc. - Hollis NH

International Classification:

F16H 2702

US Classification:

74 8942, 7442472

Abstract:

An anti-backlash nut assembly is on a reinforced lead screw having a threaded lead screw rotatable about a central axis. A hollow, elongated reinforcing rail extends lengthwise of and surrounding the lead screw. The reinforcing rail has a slot extending lengthwise of the central axis. The anti-backlash nut assembly has a nut moveable along the reinforcing rail. The anti-backlash nut has a pair of separate nut portions. Each nut portion has a tongue extending radially through the slot and having threads engagable with the threads of the lead screw for moving both nut portions in reciprocating motion lengthwise of the rail when the screw is rotated. A spacing mechanism forces the nut portions apart to urge the flanges of their threads into forcible engagement with the threads of the lead screw to prevent backlash while the anti-backlash nut translates laterally along the reinforcing rail.

US Patent:

6467362, Oct 22, 2002

Filed:

Feb 2, 2001

Appl. No.:

09/775674

Inventors:

Keith W. Erikson - Hollis NH
Kenneth W. Erikson - Amherst NH

Assignee:

Kerk Motion Products, Inc. - Hollis NH

International Classification:

F16H 2702

US Classification:

74 8936, 7442472

Abstract:

An anti-backlash nut is assembled on a reinforced lead screw for bilateral motion lengthwise of the lead screw as the screw is rotated. A hollow, elongate reinforcing rail extends lengthwise of and surrounds the lead screw. A slot in the rail extends lengthwise of the central axis of the lead screw. The anti-backlash nut comprises two separate portions, each portion having a tongue which extends radially through the slot and has threads engageable with the threads of the lead screw for moving both nut portions in reciprocating motion lengthwise of the rail when the screw is rotated. Spring means are employed for forcing the nut portions apart to urge the flanges of their threads into forcible engagement with the threads of the lead screw to prevent backlash, while the anti-backlash nut translates laterally along the reinforcing rail.

US Patent:

6524254, Feb 25, 2003

Filed:

Oct 2, 2001

Appl. No.:

09/969438

Inventors:

Kenneth R. Erikson - Henniker NH

Assignee:

BAE Systems Information and Electronic Systems Integration, Inc. - Nashua NH

International Classification:

A61B 800

US Classification:

600447, 600459

Abstract:

A transducer probe has a fully populated, integrated, matrix array of acoustical transducers for ultrasound imaging, switchable in real time between two orthogonal 1. 5D or 1. 75D transducers arrays, consisting of tiled subarrays of transducers which may be switched in real time between vertical and horizontal strip arrays by integrated circuits directly attached to the subarrays, for performing a first level of transmit and receive beam forming functionality with either horizontal or vertical scanning. The integrated circuits include a summer circuit for reducing the output signals of each subarray to a single line, reducing the number of lines required in the cable or connection medium. An interface box mates to a host system and facilitates the switching and control function. Impedance matching in the integrated circuits between transducers and cable lines improves signal transmission in cables. Applications include medical imaging, materials testing and sonar systems.

US Patent:

6589180, Jul 8, 2003

Filed:

Mar 8, 2002

Appl. No.:

10/094851

Inventors:

Kenneth R. Erikson - Henniker NH
John Marciniec - Framingham MA
Timothy E. White - Acton MA

Assignee:

Bae Systems Information and Electronic Systems Integration, INC - Nashua NH

International Classification:

A61B 814

US Classification:

600459, 310334, 29 2535

Abstract:

A high density, exceptionally complex and compact ultrasound transducer array using multi-layer structures composed of active integrated circuit devices on various substrates and passive devices. Electrically conducting interconnections between substrates are implemented with micro-vias configured with conductors extending through the substrates, permitting the use of divided or different integrated circuit technologies arranged and/or isolated within different integrated circuit substrates or layers of the ultrasound transducer assembly. The various layers may be assembled with solders of respectively lower reflow temperatures, to permit testing of selected layers and circuits prior to completion.

US Patent:

6700833, Mar 2, 2004

Filed:

Aug 14, 2002

Appl. No.:

10/219169

Inventors:

Kenneth R. Erikson - Henniker NH

Assignee:

BAE Systems Information and Electronic Systems Integration Inc - Nashua NH

International Classification:

G01S 1589

US Classification:

367 88, 348 81, 367131, 367 7

Abstract:

A method and system for underwater detection of fully or partially buried objects such as sea mines and underwater cables, consisting of a mobile underwater platform configured with a real-time, three dimensional acoustical camera with a downward directed field of view used as an imaging interferometer, coordinated with a high-intensity, low frequency acoustical transmitter directed as to disturb the loose particulate or elastic matter comprising the seafloor within the field of view of the camera. The images recorded by the camera display the relative motion of the seafloor material before and after an acoustical pulse, in contrast to the lesser or no motion of submerged solid objects. Distinguishing man-made from natural objects is aided by recognizing geometric shapes apparent within the varying image density, not common in nature.

US Patent:

6707761, Mar 16, 2004

Filed:

Sep 17, 2002

Appl. No.:

10/246088

Inventors:

Kenneth R. Erikson - Henniker NH

Assignee:

BAE Systems Information Electronic Systems Integration INC - Nashua NH

International Classification:

G01S 1589

US Classification:

367131, 396 25, 348 81

Abstract:

A real-time, three dimensional, acoustical camera and a real-time, range-gated, intensified, electro-optical camera have substantially overlapping fields of view for co-registered imaging of underwater objects at close ranges. The system is typically mounted in an unmanned underwater vehicle but may be used in other fixed or mobile configurations. The coupled fields of view are steerable in an arc around at least one axis over a large field of regard with a servo-controlled rotating mirror system, while the vehicle or the target is moving or hovering. An automated target recognition system uses the multi-modality images to provide enhanced target recognition and/or autonomous operation in unmanned missions.

US Patent:

6716669, Apr 6, 2004

Filed:

Oct 31, 2002

Appl. No.:

10/284999

Inventors:

Kenneth R. Erikson - Henniker NH
John W. Marciniec - Framingham MA

Assignee:

Bae Systems Information and Electronic Systems Integration Inc - Nashua NH

International Classification:

H01L 2144

US Classification:

438106, 438612

Abstract:

Techniques for interconnecting high-density, structures that include temperature sensitive materials such as piezoelectric ultrasonic transducer arrays, optical detector arrays, MEMS and the like to other structures (e. g. , integrated circuits or mechanical assemblies) are disclosed.