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:

60731052, Jun 6, 2000

Filed:

Jun 13, 1997

Appl. No.:

8/874604

Inventors:

Andrew B. Sutcliffe - Tyngsboro MA
David S. Kramer - Waltham MA
Kevin A. Dunn - Boston MA

Assignee:

Tele-Publishing, Inc. - Boston MA

International Classification:

G06F 1730

US Classification:

705 1

Abstract:

A system for providing personal advertisements over a public network and for matching personal advertisements of different users includes means for integrating data from a plurality of different storage devices into a single database accessible by a user over a public network. The database includes client and user profile information collected from users over the public network and through one or more call centers and adtaking systems.

US Patent:

48728330, Oct 10, 1989

Filed:

May 16, 1988

Appl. No.:

7/194976

Inventors:

David W. Kramer - Milwaukee WI

Assignee:

A. O. Smith Corporation - Milwaukee WI

International Classification:

F23D 1462

US Classification:

431354

Abstract:

An improved gas burner construction comprising a gas supply conduit having an outlet. A venturi is located downstream of the outlet and includes a converging section, a throat section, and a diverging section. The converging section of the venturi is spaced outwardly of the gas outlet to provide an annular passage through which air is drawn into the venturi. A helical baffle is disposed within the diverging section of the venturi and is spaced downstream of the throat section. The upstream end of the baffle is secured to the diverging section and the remaining portion of the baffle extending downstream from the upstream end has a substantially uniform diameter and is spaced inwardly from the diverging section of the venturi. A target is mounted on the downstream end of the diverging section of the venturi and includes a central disc-like portion, which spreads the combustible gas-air mixture and provides a short flame pattern.

US Patent:

48754650, Oct 24, 1989

Filed:

May 16, 1988

Appl. No.:

7/195285

Inventors:

David W. Kramer - Milwaukee WI

Assignee:

A. O. Smith Corporation - Milwaukee WI

International Classification:

A47J 2700

US Classification:

126391

Abstract:

A submersible chamber water heater having improved efficiency. The water heater includes a tubular member that is mounted in an opening in the tank and defines a combustion chamber. A fuel-air mixture is supplied to a burner located within the combustion chamber and the waste gases of combustion are conducted from the combustion chamber into a series of heat exchanger tubes which are positioned beneath the combustion chamber and are then discharged to a flue. A conduit extends through the combustion chamber and the ends of the conduit communicate with the interior of the tank. One end of the conduit is at a higher level than the other, so that water flows by convection through the conduit to increase the efficiency of the heating operation.