David A Kramer

US Patent:

20100280985, Nov 4, 2010

Filed:

Jan 13, 2009

Appl. No.:

12/812250

Inventors:

Andrew E. Duchon - Somerville MA, US
Robert McCormack - Somerville MA, US
William J. Salter - Harvard MA, US
Paul David Allopenna - Storrs CT, US
Shawn Weil - Melrose MA, US
John Colonna-Romano - Stow MA, US
David Kramer - Waltham MA, US

Assignee:

Aptima, Inc. - Wobum MA

International Classification:

G06N 5/02

US Classification:

706 52, 706 54, 706 46

Abstract:

The present invention relate to a method and system to predict the likelihood of data topics that may occur from data sources. The likelihood of the data topics may be predicted over other dimensions of time or over other dimensions. In the present invention, a topic means a defining characteristic, usually represented as a data element, of a single feature, activity, subject, behavior, event or an aggregation of such defining characteristics.

US Patent:

43678840, Jan 11, 1983

Filed:

Dec 15, 1980

Appl. No.:

6/216511

Inventors:

Howard L. Johnson - Kansas City MO
David A. Kramer - Independence MO

International Classification:

B62D 5306

US Classification:

280423B

Abstract:

A removable gooseneck for detachably connecting a tractor and trailer utilizes an elongate beam member attached to the hitch of the tractor and having an upstanding frame member depending from a rear end of the beam member. A foot is pivotally mounted at a lower end of the upstanding frame member for engagement with a front end portion of the trailer. A guide pin and link arrangement detachably connects the foot at a front end to the trailer and a locking pin and bushing arrangement detachably connects the rear end of the foot to the trailer at a location spaced from the guide pin and link arrangement. A power fluid ram extends between an upper portion of the upstanding frame member and the foot to selectively cause the foot member to swing upwardly and tilt the trailer downwardly for detachment of the gooseneck from the trailer and swing the foot downwardly to tilt the trailer upwardly for drafting.

US Patent:

49829769, Jan 8, 1991

Filed:

Dec 14, 1988

Appl. No.:

7/284291

Inventors:

David A. Kramer - Independence MO

Assignee:

Trailer Design and Engineering, Inc. - North Kansas City MO

International Classification:

B62D 1304

US Classification:

280426

Abstract:

A steering system for use in a towing vehicle-steering trailer assembly, wherein all trailer axles are load-bearing and fixed. The steerable trailer includes a sectored radian steering mechanism which comprises a sectored rack-and-pinion mechanism keyed to the towing vehicle fifth wheel plate. The sectored rack-and-pinion mechanism provides a steering output signal proportional to the relative angle between the towing vehicle and the steerable trailer which approaches an asymptote and thus allows the towing vehicle to turn in relation to the steered trailer without generating the steering mechanism output signal.